almost fixed constraints and rects; about time to go sleep now, lol

src/mightypork/gamecore/audio/SoundSystem.java

@@ -32,7 +32,7 @@ public class SoundSystem extends RootBusNode implements Updateable {
 	private static final Vec INITIAL_LISTENER_POS = Vec.ZERO;
 	private static final int MAX_SOURCES = 256;
 	
-	private static VecMutable listener = new MutableCoord(0,0,0);
+	private static VecMutable listener = new MutableCoord(0, 0, 0);
 	
 	private static boolean inited;
 	

src/mightypork/gamecore/gui/components/PluggableRenderable.java

@@ -3,7 +3,7 @@ package mightypork.gamecore.gui.components;
 
 import mightypork.utils.math.constraints.PluggableContext;
 import mightypork.utils.math.constraints.RectConstraint;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -18,7 +18,7 @@ public interface PluggableRenderable extends Renderable, PluggableContext {
 	
 	
 	@Override
-	Rect getRect();
+	RectView getRect();
 	
 	
 	@Override

src/mightypork/gamecore/gui/components/PluggableRenderer.java

@@ -3,7 +3,7 @@ package mightypork.gamecore.gui.components;
 
 import mightypork.utils.math.constraints.ContextAdapter;
 import mightypork.utils.math.constraints.RectConstraint;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -18,7 +18,7 @@ public abstract class PluggableRenderer extends ContextAdapter implements Plugga
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
 		return super.getRect();
 	}

src/mightypork/gamecore/gui/components/layout/ElementHolder.java

@@ -10,7 +10,7 @@ import mightypork.gamecore.gui.components.PluggableRenderable;
 import mightypork.gamecore.gui.components.PluggableRenderer;
 import mightypork.gamecore.gui.components.Renderable;
 import mightypork.utils.math.constraints.RectConstraint;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -60,7 +60,7 @@ public abstract class ElementHolder extends BusNode implements PluggableRenderab
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
 		return context.getRect();
 	}

src/mightypork/gamecore/gui/components/painters/TextPainter.java

@@ -6,11 +6,10 @@ import mightypork.gamecore.render.fonts.FontRenderer;
 import mightypork.gamecore.render.fonts.FontRenderer.Align;
 import mightypork.gamecore.render.fonts.GLFont;
 import mightypork.utils.math.color.RGB;
-import mightypork.utils.math.coord.CoordValue;
 import mightypork.utils.math.coord.MutableCoord;
 import mightypork.utils.math.coord.Vec;
 import mightypork.utils.math.coord.VecMutable;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 import mightypork.utils.string.StringProvider;
 import mightypork.utils.string.StringProvider.StringWrapper;
 
@@ -31,7 +30,7 @@ public class TextPainter extends PluggableRenderer {
 	private boolean shadow;
 	
 	private RGB shadowColor = RGB.BLACK;
-	private VecMutable shadowOffset = new MutableCoord(1, 1);
+	private final VecMutable shadowOffset = new MutableCoord(1, 1);
 	
 	
 	/**
@@ -87,7 +86,7 @@ public class TextPainter extends PluggableRenderer {
 		if (text == null) return;
 		
 		final String str = text.getString();
-		final Rect rect = getRect();
+		final RectView rect = getRect();
 		
 		if (shadow) {
 			font.draw(str, rect.move(shadowOffset), align, shadowColor);

src/mightypork/gamecore/gui/screens/Screen.java

@@ -12,7 +12,7 @@ import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.render.Render;
 import mightypork.utils.math.constraints.RectConstraint;
 import mightypork.utils.math.coord.Vec;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -104,7 +104,7 @@ public abstract class Screen extends AppSubModule implements Renderable, KeyBind
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
 		return getDisplay().getRect();
 	}

src/mightypork/gamecore/gui/screens/ScreenLayer.java

@@ -1,7 +1,6 @@
 package mightypork.gamecore.gui.screens;
 
 
-import mightypork.gamecore.control.AppAccess;
 import mightypork.gamecore.control.AppSubModule;
 import mightypork.gamecore.control.interf.DefaultImpl;
 import mightypork.gamecore.gui.components.Renderable;
@@ -10,7 +9,7 @@ import mightypork.gamecore.input.KeyBindingPool;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.utils.math.constraints.RectConstraint;
 import mightypork.utils.math.coord.Vec;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -60,7 +59,7 @@ public abstract class ScreenLayer extends AppSubModule implements Comparable<Scr
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
 		return screen.getRect();
 	}
@@ -110,6 +109,4 @@ public abstract class ScreenLayer extends AppSubModule implements Comparable<Scr
 	 */
 	public abstract int getPriority();
 	
-	
-	
 }

src/mightypork/gamecore/render/DisplaySystem.java

@@ -10,14 +10,11 @@ import mightypork.gamecore.control.AppModule;
 import mightypork.gamecore.control.bus.events.ScreenChangeEvent;
 import mightypork.gamecore.control.timing.FpsMeter;
 import mightypork.utils.logging.Log;
-import mightypork.utils.math.constraints.Constraints;
-import mightypork.utils.math.constraints.NumberConstraint;
 import mightypork.utils.math.constraints.RectConstraint;
-import mightypork.utils.math.coord.ConstraintCoord;
-import mightypork.utils.math.coord.SynthCoord2D;
-import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.FixedCoord;
 import mightypork.utils.math.coord.VecView;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.FixedRect;
+import mightypork.utils.math.rect.RectView;
 
 import org.lwjgl.BufferUtils;
 import org.lwjgl.LWJGLException;
@@ -180,7 +177,7 @@ public class DisplaySystem extends AppModule implements RectConstraint {
 	 */
 	public static VecView getSize()
 	{
-		return size;
+		return new FixedCoord(getWidth(), getHeight());
 	}
 	
 	
@@ -229,9 +226,9 @@ public class DisplaySystem extends AppModule implements RectConstraint {
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
-		return new Rect(Vec.ZERO, getSize());
+		return new FixedRect(getSize());
 	}
 	
 	
@@ -243,48 +240,48 @@ public class DisplaySystem extends AppModule implements RectConstraint {
 		return fpsMeter.getFPS();
 	}
 	
-	public Vec getCenter()
+	
+	public VecView getCenter()
 	{
-		return center;
+		return getSize().half();
 	}
 	
-	private static final VecView size = new SynthCoord2D() {
-		
-		@Override
-		public double y()
-		{
-			return getHeight();
-		}
-		
-		
-		@Override
-		public double x()
-		{
-			return getWidth();
-		}
-	};
-	
-	/** Screen width constraint */
-	private static final NumberConstraint width = size.xc();
-	
-	/** Screen height constaint */
-	private static final NumberConstraint height = size.yc();
-	
-
-	private static final VecView center = new SynthCoord2D() {
-		
-		@Override
-		public double y()
-		{
-			return size.half().x();
-		}
-		
-		
-		@Override
-		public double x()
-		{
-			return size.half().y();
-		}
-	};
+//	private static final VecView size = new SynthCoord2D() {
+//		
+//		@Override
+//		public double y()
+//		{
+//			return getHeight();
+//		}
+//		
+//		
+//		@Override
+//		public double x()
+//		{
+//			return getWidth();
+//		}
+//	};
+//	
+//	/** Screen width constraint */
+//	private static final NumberConstraint width = size.xc();
+//	
+//	/** Screen height constaint */
+//	private static final NumberConstraint height = size.yc();
+//	
+//	private static final VecView center = new SynthCoord2D() {
+//		
+//		@Override
+//		public double y()
+//		{
+//			return size.half().x();
+//		}
+//		
+//		
+//		@Override
+//		public double x()
+//		{
+//			return size.half().y();
+//		}
+//	};
 	
 }

src/mightypork/gamecore/render/Render.java

@@ -9,10 +9,8 @@ import mightypork.gamecore.render.textures.TxQuad;
 import mightypork.utils.files.FileUtils;
 import mightypork.utils.logging.Log;
 import mightypork.utils.math.color.RGB;
-import mightypork.utils.math.coord.CoordValue;
+import mightypork.utils.math.coord.FixedCoord;
 import mightypork.utils.math.coord.Vec;
-import mightypork.utils.math.coord.VecView;
-import mightypork.utils.math.rect.Rect;
 import mightypork.utils.math.rect.Rect;
 
 import org.lwjgl.opengl.GL11;
@@ -29,9 +27,9 @@ import org.newdawn.slick.util.ResourceLoader;
  */
 public class Render {
 	
-	public static final Vec AXIS_X = new CoordValue(1, 0, 0);
-	public static final Vec AXIS_Y = new CoordValue(0, 1, 0);
-	public static final Vec AXIS_Z = new CoordValue(0, 0, 1);
+	public static final Vec AXIS_X = new FixedCoord(1, 0, 0);
+	public static final Vec AXIS_Y = new FixedCoord(0, 1, 0);
+	public static final Vec AXIS_Z = new FixedCoord(0, 0, 1);
 	
 	
 	/**
@@ -511,7 +509,7 @@ public class Render {
 	 */
 	public static void quadTextured(Rect quad, Texture texture)
 	{
-		quadTextured(quad, new Rect(0,0,1,1), texture, RGB.WHITE);
+		quadTextured(quad, Rect.ONE, texture, RGB.WHITE);
 	}
 	
 	

src/mightypork/gamecore/render/fonts/FontRenderer.java

@@ -1,8 +1,8 @@
 package mightypork.gamecore.render.fonts;
 
 
-import mightypork.gamecore.render.Render;
 import static mightypork.utils.math.constraints.Constraints.*;
+import mightypork.gamecore.render.Render;
 import mightypork.utils.math.color.RGB;
 import mightypork.utils.math.coord.Vec;
 import mightypork.utils.math.coord.VecView;
@@ -173,7 +173,7 @@ public class FontRenderer {
 	 * @param height drawing height
 	 * @param align horizontal alignment
 	 */
-	public void draw(String text, VecView pos, double height, Align align)
+	public void draw(String text, Vec pos, double height, Align align)
 	{
 		draw(text, pos, height, align, this.color);
 	}
@@ -188,25 +188,25 @@ public class FontRenderer {
 	 * @param align horizontal alignment
 	 * @param color drawing color
 	 */
-	public void draw(String text, VecView pos, double height, Align align, RGB color)
+	public void draw(String text, Vec pos, double height, Align align, RGB color)
 	{
 		
 		final double w = getWidth(text, height);
 		
-		final VecView start;
+		final Vec start;
 		
 		switch (align) {
 			case LEFT:
-				start = pos;
+				start = pos.view();
 				break;
 			
 			case CENTER:
-				start = pos.sub(w / 2D, 0);
+				start = pos.view().sub(w / 2D, 0);
 				break;
 			
 			case RIGHT:
 			default:
-				start = pos.sub(w, 0);
+				start = pos.view().sub(w, 0);
 				break;
 		}
 		

src/mightypork/gamecore/render/fonts/impl/CachedFont.java

@@ -23,7 +23,7 @@ import mightypork.gamecore.render.fonts.GLFont;
 import mightypork.gamecore.render.textures.FilterMode;
 import mightypork.utils.logging.Log;
 import mightypork.utils.math.color.RGB;
-import mightypork.utils.math.coord.CoordValue;
+import mightypork.utils.math.coord.FixedCoord;
 import mightypork.utils.math.coord.VecView;
 
 import org.lwjgl.BufferUtils;
@@ -425,7 +425,7 @@ public class CachedFont implements GLFont {
 	@Override
 	public VecView getNeededSpace(String text)
 	{
-		return new CoordValue(getWidth(text), getHeight());
+		return new FixedCoord(getWidth(text), getHeight());
 	}
 	
 }

src/mightypork/gamecore/render/fonts/impl/DeferredFont.java

@@ -136,7 +136,7 @@ public class DeferredFont extends DeferredResource implements GLFont {
 	 */
 	protected Font getAwtFont(String resource, float size, int style) throws FontFormatException, IOException
 	{
-		try (InputStream in = FileUtils.getResource(resource)) {
+		try(InputStream in = FileUtils.getResource(resource)) {
 			
 			Font awtFont = Font.createFont(Font.TRUETYPE_FONT, in);
 			

src/mightypork/gamecore/render/textures/TxQuad.java

@@ -1,6 +1,7 @@
 package mightypork.gamecore.render.textures;
 
 
+import mightypork.utils.math.rect.FixedRect;
 import mightypork.utils.math.rect.Rect;
 
 import org.newdawn.slick.opengl.Texture;
@@ -64,7 +65,7 @@ public class TxQuad {
 	 * @param y2 right bottom Y (0-1)
 	 */
 	public TxQuad(Texture tx, double x1, double y1, double x2, double y2) {
-		this(tx, new Rect(x1, y1, x2, y2));
+		this(tx, new FixedRect(x1, y1, x2, y2));
 	}
 	
 	

src/mightypork/rogue/screens/test_cat_sound/LayerFlyingCat.java

@@ -13,14 +13,13 @@ import mightypork.gamecore.gui.screens.Screen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.input.Keys;
-import mightypork.gamecore.render.DisplaySystem;
 import mightypork.gamecore.render.fonts.FontRenderer.Align;
 import mightypork.rogue.Res;
 import mightypork.utils.math.animation.AnimDouble;
 import mightypork.utils.math.animation.Easing;
 import mightypork.utils.math.color.RGB;
 import mightypork.utils.math.coord.AnimCoord;
-import mightypork.utils.math.coord.CoordValue;
+import mightypork.utils.math.coord.FixedCoord;
 import mightypork.utils.math.coord.Vec;
 
 
@@ -48,7 +47,7 @@ public class LayerFlyingCat extends ScreenLayer implements Updateable, MouseButt
 		tp.setAlign(Align.CENTER);
 		tp.setColor(RGB.YELLOW);
 		tp.setText("Meow!");
-		tp.setShadow(RGB.dark(0.8), new CoordValue(2, 2));
+		tp.setShadow(RGB.dark(0.8), new FixedCoord(2, 2));
 		tp.setContext(_align(_box(64, 64), _mouseX, _mouseY));
 		
 		/*
@@ -80,11 +79,9 @@ public class LayerFlyingCat extends ScreenLayer implements Updateable, MouseButt
 		
 		final Vec pos = event.getPos();
 		
-		final double time = 100;
+		this.pos.animateWithSpeed(pos, 200);
 		
-		size.animate(100 + rand.nextInt(700), time/2D);
-		
-		this.pos.animateWithSpeed(pos, 300);
+		size.animate(200 + rand.nextInt(600), this.pos.getDuration() / 2);
 	}
 	
 	

src/mightypork/utils/config/PropertyManager.java

@@ -175,7 +175,7 @@ public class PropertyManager {
 		boolean needsSave = false;
 		new File(file.getParent()).mkdirs();
 		
-		try (FileInputStream fis = new FileInputStream(file)) {
+		try(FileInputStream fis = new FileInputStream(file)) {
 			props.load(fis);
 		} catch (final IOException e) {
 			needsSave = true;

src/mightypork/utils/files/FileTreeDiff.java

@@ -72,11 +72,11 @@ public class FileTreeDiff {
 			ck1.reset();
 			ck2.reset();
 			
-			try (	FileInputStream in1 = new FileInputStream(pair.a);
-					FileInputStream in2 = new FileInputStream(pair.b)) {
+			try(FileInputStream in1 = new FileInputStream(pair.a);
+				FileInputStream in2 = new FileInputStream(pair.b)) {
 				
-				try (	CheckedInputStream cin1 = new CheckedInputStream(in1, ck1);
-						CheckedInputStream cin2 = new CheckedInputStream(in2, ck2)) {
+				try(CheckedInputStream cin1 = new CheckedInputStream(in1, ck1);
+					CheckedInputStream cin2 = new CheckedInputStream(in2, ck2)) {
 					
 					while (true) {
 						final int read1 = cin1.read(BUFFER);

src/mightypork/utils/files/FileUtils.java

@@ -95,8 +95,8 @@ public class FileUtils {
 	public static void copyFile(File source, File target) throws IOException
 	{
 		
-		try (	InputStream in = new FileInputStream(source);
-				OutputStream out = new FileOutputStream(target)) {
+		try(InputStream in = new FileInputStream(source);
+			OutputStream out = new FileOutputStream(target)) {
 			
 			copyStream(in, out);
 		}
@@ -161,7 +161,7 @@ public class FileUtils {
 	 */
 	public static String fileToString(File file) throws IOException
 	{
-		try (FileInputStream fin = new FileInputStream(file)) {
+		try(FileInputStream fin = new FileInputStream(file)) {
 			
 			return streamToString(fin);
 		}
@@ -198,7 +198,7 @@ public class FileUtils {
 		final List<File> list = new ArrayList<>();
 		
 		try {
-			for (File f : dir.listFiles(filter)) {
+			for (final File f : dir.listFiles(filter)) {
 				list.add(f);
 			}
 		} catch (final Exception e) {
@@ -361,7 +361,7 @@ public class FileUtils {
 	 */
 	public static void stringToFile(File file, String text) throws IOException
 	{
-		try (PrintStream out = new PrintStream(new FileOutputStream(file), false, "UTF-8")) {
+		try(PrintStream out = new PrintStream(new FileOutputStream(file), false, "UTF-8")) {
 			
 			out.print(text);
 			
@@ -482,8 +482,8 @@ public class FileUtils {
 	 */
 	public static void resourceToFile(String resname, File file) throws IOException
 	{
-		try (	InputStream in = FileUtils.getResource(resname);
-				OutputStream out = new FileOutputStream(file)) {
+		try(InputStream in = FileUtils.getResource(resname);
+			OutputStream out = new FileOutputStream(file)) {
 			
 			FileUtils.copyStream(in, out);
 		}
@@ -500,7 +500,7 @@ public class FileUtils {
 	 */
 	public static String resourceToString(String resname) throws IOException
 	{
-		try (InputStream in = FileUtils.getResource(resname)) {
+		try(InputStream in = FileUtils.getResource(resname)) {
 			return streamToString(in);
 		}
 	}

src/mightypork/utils/files/ZipBuilder.java

@@ -70,7 +70,7 @@ public class ZipBuilder {
 		
 		out.putNextEntry(new ZipEntry(path));
 		
-		try (InputStream in = FileUtils.stringToStream(text)) {
+		try(InputStream in = FileUtils.stringToStream(text)) {
 			FileUtils.copyStream(in, out);
 		}
 	}
@@ -91,7 +91,7 @@ public class ZipBuilder {
 		
 		out.putNextEntry(new ZipEntry(path));
 		
-		try (InputStream in = FileUtils.getResource(resPath)) {
+		try(InputStream in = FileUtils.getResource(resPath)) {
 			FileUtils.copyStream(in, out);
 		}
 	}

src/mightypork/utils/files/ZipUtils.java

@@ -32,7 +32,7 @@ public class ZipUtils {
 	 */
 	public static List<String> extractZip(File file, File outputDir, StringFilter filter) throws IOException
 	{
-		try (ZipFile zip = new ZipFile(file)) {
+		try(ZipFile zip = new ZipFile(file)) {
 			return extractZip(zip, outputDir, filter);
 		}
 	}
@@ -88,7 +88,7 @@ public class ZipUtils {
 	 */
 	public static List<String> listZip(File zipFile) throws IOException
 	{
-		try (ZipFile zip = new ZipFile(zipFile)) {
+		try(ZipFile zip = new ZipFile(zipFile)) {
 			return listZip(zip);
 		}
 	}
@@ -132,10 +132,10 @@ public class ZipUtils {
 	{
 		destFile.getParentFile().mkdirs();
 		
-		try (	InputStream in = zip.getInputStream(entry);
-				BufferedInputStream is = new BufferedInputStream(in);
-				FileOutputStream fos = new FileOutputStream(destFile);
-				BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER_SIZE)) {
+		try(InputStream in = zip.getInputStream(entry);
+			BufferedInputStream is = new BufferedInputStream(in);
+			FileOutputStream fos = new FileOutputStream(destFile);
+			BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER_SIZE)) {
 			
 			FileUtils.copyStream(is, dest);
 		}
@@ -169,7 +169,7 @@ public class ZipUtils {
 	
 	public static boolean entryExists(File selectedFile, String string)
 	{
-		try (ZipFile zf = new ZipFile(selectedFile)) {
+		try(ZipFile zf = new ZipFile(selectedFile)) {
 			return zf.getEntry(string) != null;
 		} catch (final Exception e) {
 			return false;

src/mightypork/utils/files/ion/Ion.java

@@ -67,7 +67,7 @@ public class Ion {
 	 */
 	public static Object fromFile(File file) throws IonException
 	{
-		try (InputStream in = new FileInputStream(file)) {
+		try(InputStream in = new FileInputStream(file)) {
 			
 			final Object obj = fromStream(in);
 			return obj;
@@ -113,7 +113,7 @@ public class Ion {
 	 */
 	public static void toFile(File path, Object obj) throws IonException
 	{
-		try (OutputStream out = new FileOutputStream(path)) {
+		try(OutputStream out = new FileOutputStream(path)) {
 			final String f = path.toString();
 			final File dir = new File(f.substring(0, f.lastIndexOf(File.separator)));
 			

src/mightypork/utils/math/Polar.java

@@ -5,8 +5,8 @@ import mightypork.utils.math.Calc.Deg;
 import mightypork.utils.math.Calc.Rad;
 import mightypork.utils.math.constraints.NumberConstraint;
 import mightypork.utils.math.coord.ConstraintCoord;
-import mightypork.utils.math.coord.CoordProxy;
 import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecView;
 
 
 /**
@@ -137,7 +137,7 @@ public class Polar {
 	 * 
 	 * @return coord
 	 */
-	public CoordProxy toCoord()
+	public VecView toCoord()
 	{
 		// lazy init
 		if (coord == null) {
@@ -158,7 +158,7 @@ public class Polar {
 			});
 		}
 		
-		return coord.view();
+		return coord;
 	}
 	
 	

src/mightypork/utils/math/Range.java

@@ -24,7 +24,6 @@ public class Range {
 	}
 	
 	
-	
 	/**
 	 * Create new range
 	 * 
@@ -48,10 +47,12 @@ public class Range {
 		this.max = minmax;
 	}
 	
+	
 	/**
 	 * Make sure min is <= max
 	 */
-	private void norm() {
+	private void norm()
+	{
 		if (min > max) {
 			final double t = min;
 			min = max;

src/mightypork/utils/math/animation/AnimDouble.java

@@ -88,7 +88,7 @@ public class AnimDouble implements Updateable, Pauseable, NumberConstraint {
 	 * 
 	 * @return number
 	 */
-	public double getGetStart()
+	public double getStart()
 	{
 		return from;
 	}
@@ -105,6 +105,18 @@ public class AnimDouble implements Updateable, Pauseable, NumberConstraint {
 	}
 	
 	
+	public double getDuration()
+	{
+		return duration;
+	}
+	
+	
+	public double getElapsed()
+	{
+		return elapsedTime;
+	}
+	
+	
 	/**
 	 * Get value at delta time
 	 * 
@@ -139,7 +151,7 @@ public class AnimDouble implements Updateable, Pauseable, NumberConstraint {
 	@Override
 	public void update(double delta)
 	{
-		if (paused) return;
+		if (paused || isFinished()) return;
 		
 		elapsedTime = Calc.clampd(elapsedTime + delta, 0, duration);
 		if (isFinished()) {

src/mightypork/utils/math/constraints/Constraints.java

@@ -4,8 +4,13 @@ package mightypork.utils.math.constraints;
 import mightypork.gamecore.control.timing.Poller;
 import mightypork.gamecore.input.InputSystem;
 import mightypork.gamecore.render.DisplaySystem;
-import mightypork.utils.math.coord.*;
+import mightypork.utils.math.coord.FixedCoord;
+import mightypork.utils.math.coord.SynthCoord3D;
+import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecView;
+import mightypork.utils.math.rect.FixedRect;
 import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -16,54 +21,79 @@ import mightypork.utils.math.rect.Rect;
  */
 public class Constraints {
 	
-	/* ================= Variables ================= */
+	public static RectCache _cache(final RectConstraint rc)
+	{
+		return new RectCache(rc);
+	}
 	
-	public static final NumberConstraint _mouseX = new NumberConstraint() {
 	
-		@Override
-		public double getValue()
-		{
-			return InputSystem.getMousePos().x();
-		}
-	};
+	public static RectCache _cache(final Poller poller, final RectConstraint rc)
+	{
+		return new RectCache(poller, rc);
+	}
 	
-	public static final NumberConstraint _mouseY = new NumberConstraint() {
 	
-		@Override
-		public double getValue()
-		{
-			return InputSystem.getMousePos().y();
-		}
-	};
-	public static final NumberConstraint _mousePos = new NumberConstraint() {
+	/**
+	 * Convert {@link Number} to {@link NumberConstraint} if needed
+	 * 
+	 * @param o unknown numeric value
+	 * @return converted
+	 */
+	public static NumberConstraint _n(final Object o)
+	{
+		if (o instanceof NumberConstraint) return (NumberConstraint) o;
 		
-		@Override
-		public double getValue()
-		{
-			return InputSystem.getMousePos().y();
-		}
-	};
+		if (o instanceof Number) return new NumberConstraint() {
 			
-	public static final NumberConstraint _screenW = new NumberConstraint() {
+			@Override
+			public double getValue()
+			{
+				return ((Number) o).doubleValue();
+			}
+		};
 		
-		@Override
-		public double getValue()
-		{
-			return DisplaySystem.getWidth();
-		}
-	};
+		throw new IllegalArgumentException("Invalid numeric type.");
+	}
 	
-	public static final NumberConstraint _screenH = new NumberConstraint() {
 	
-		@Override
-		public double getValue()
-		{
-			return DisplaySystem.getHeight();
-		}
-	};
+	/**
+	 * Convert {@link Number} or {@link NumberConstraint} to double (current
+	 * value)
+	 * 
+	 * @param o unknown numeric value
+	 * @return double value
+	 */
+	static double toDouble(final Object o)
+	{
+		return _n(o).getValue();
+	}
 	
 	
-	/* ================= Arithmetics ================= */
+	/**
+	 * Convert {@link VecConstraint} to {@link VecArith}.
+	 * 
+	 * @param o unknown numeric value
+	 * @return double value
+	 */
+	static VecView vec(final VecConstraint o)
+	{
+		return o.getVec();
+	}
+	
+	
+	/**
+	 * Convert {@link RectConstraint} to {@link Rect}.
+	 * 
+	 * @param o unknown numeric value
+	 * @return double value
+	 */
+	static RectView toRect(final RectConstraint o)
+	{
+		return o.getRect();
+	}
+	
+	
+	// =================== Number constraints ====================
 	
 	public static NumberConstraint _min(final Object a, final Object b)
 	{
@@ -72,7 +102,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return Math.min(num(a), num(b));
+				return Math.min(toDouble(a), toDouble(b));
 			}
 		};
 	}
@@ -85,7 +115,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return Math.max(num(a), num(b));
+				return Math.max(toDouble(a), toDouble(b));
 			}
 		};
 	}
@@ -135,9 +165,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).round();
+				return toRect(r).round();
 			}
 		};
 	}
@@ -189,7 +219,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return num(a) + num(b);
+				return toDouble(a) + toDouble(b);
 			}
 		};
 	}
@@ -202,7 +232,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return num(a) - num(b);
+				return toDouble(a) - toDouble(b);
 			}
 		};
 	}
@@ -215,7 +245,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return num(a) * num(b);
+				return toDouble(a) * toDouble(b);
 			}
 		};
 	}
@@ -234,7 +264,7 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return num(a) / num(b);
+				return toDouble(a) / toDouble(b);
 			}
 		};
 	}
@@ -247,28 +277,26 @@ public class Constraints {
 			@Override
 			public double getValue()
 			{
-				return num(whole) * (num(percent) / 100);
+				return toDouble(whole) * (toDouble(percent) / 100);
 			}
 		};
 	}
 	
 	
-	/* ================= Layout utilities ================= */
-	
 	public static RectConstraint _row(final RectConstraint r, final int rows, final int index)
 	{
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final double height = rect(r).getHeight();
+				final double height = toRect(r).getHeight();
 				final double perRow = height / rows;
 				
-				final Vec origin = rect(r).getOrigin().add(0, perRow * index);
-				final Vec size = rect(r).getSize().setY(perRow);
+				final Vec origin = toRect(r).getOrigin().add(0, perRow * index);
+				final Vec size = toRect(r).getSize().setY(perRow);
 				
-				return new Rect(origin, size);
+				return new FixedRect(origin, size);
 			}
 		};
 	}
@@ -279,15 +307,15 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final double width = rect(r).getWidth();
+				final double width = toRect(r).getWidth();
 				final double perCol = width / columns;
 				
-				final Vec origin = rect(r).getOrigin().add(perCol * index, 0);
-				final Vec size = rect(r).getSize().setX(perCol);
+				final Vec origin = toRect(r).getOrigin().add(perCol * index, 0);
+				final Vec size = toRect(r).getSize().setX(perCol);
 				
-				return new Rect(origin, size);
+				return new FixedRect(origin, size);
 			}
 		};
 	}
@@ -298,22 +326,22 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final double height = rect(r).getHeight();
-				final double width = rect(r).getHeight();
+				final double height = toRect(r).getHeight();
+				final double width = toRect(r).getHeight();
 				final double perRow = height / rows;
 				final double perCol = width / cols;
 				
-				final Vec origin = rect(r).getOrigin().add(perCol * left, perRow * (rows - top - 1));
+				final Vec origin = toRect(r).getOrigin().add(perCol * left, perRow * (rows - top - 1));
 				
-				return new Rect(origin, perCol, perRow);
+				return new FixedRect(origin, perCol, perRow);
 			}
 		};
 	}
 	
 	
-	/* ================= Rect manipulation ================= */
+	/* ================= RectView manipulation ================= */
 	
 	public static RectConstraint _shrink(RectConstraint r, Object shrink)
 	{
@@ -333,9 +361,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(num(left), num(top), num(right), num(bottom));
+				return toRect(r).shrink(toDouble(left), toDouble(top), toDouble(right), toDouble(bottom));
 			}
 		};
 	}
@@ -346,9 +374,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, num(shrink), 0, 0);
+				return toRect(r).shrink(0, toDouble(shrink), 0, 0);
 			}
 		};
 	}
@@ -359,9 +387,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, 0, 0, num(shrink));
+				return toRect(r).shrink(0, 0, 0, toDouble(shrink));
 			}
 		};
 	}
@@ -372,9 +400,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(num(shrink), 0, 0, 0);
+				return toRect(r).shrink(toDouble(shrink), 0, 0, 0);
 			}
 		};
 	}
@@ -385,9 +413,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, 0, num(shrink), 0);
+				return toRect(r).shrink(0, 0, toDouble(shrink), 0);
 			}
 		};
 	}
@@ -411,9 +439,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).grow(num(left), num(top), num(right), num(bottom));
+				return toRect(r).grow(toDouble(left), toDouble(top), toDouble(right), toDouble(bottom));
 			}
 		};
 	}
@@ -424,9 +452,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).grow(0, num(grow), 0, 0);
+				return toRect(r).grow(0, toDouble(grow), 0, 0);
 			}
 		};
 	}
@@ -437,9 +465,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).grow(0, 0, 0, num(grow));
+				return toRect(r).grow(0, 0, 0, toDouble(grow));
 			}
 		};
 	}
@@ -450,9 +478,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).grow(num(grow), 0, 0, 0);
+				return toRect(r).grow(toDouble(grow), 0, 0, 0);
 			}
 		};
 	}
@@ -463,9 +491,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).grow(0, 0, num(grow), 0);
+				return toRect(r).grow(0, 0, toDouble(grow), 0);
 			}
 		};
 	}
@@ -484,9 +512,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return new Rect(vec(origin), num(width), num(height));
+				return new FixedRect(vec(origin), toDouble(width), toDouble(height));
 			}
 		};
 	}
@@ -497,9 +525,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return new Rect(0, 0, num(width), num(height));
+				return new FixedRect(0, 0, toDouble(width), toDouble(height));
 			}
 		};
 	}
@@ -510,11 +538,11 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final Vec origin = rect(r).getOrigin();
+				final Vec origin = toRect(r).getOrigin();
 				
-				return new Rect(origin.x(), origin.y(), num(width), num(height));
+				return new FixedRect(origin.x(), origin.y(), toDouble(width), toDouble(height));
 			}
 		};
 	}
@@ -525,11 +553,11 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final Vec origin = rect(r).getOrigin();
+				final Vec origin = toRect(r).getOrigin();
 				
-				return new Rect(origin.x() + num(x), origin.y() + num(y), num(width), num(height));
+				return new FixedRect(origin.x() + toDouble(x), origin.y() + toDouble(y), toDouble(width), toDouble(height));
 			}
 		};
 	}
@@ -540,11 +568,11 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final VecView origin = rect(r).getOrigin();
+				final VecView origin = toRect(r).getOrigin();
 				
-				return new Rect(origin.add(num(left), num(top)), origin.add(num(right), num(bottom)));
+				return new FixedRect(origin.add(toDouble(left), toDouble(top)), origin.add(toDouble(right), toDouble(bottom)));
 			}
 		};
 	}
@@ -555,12 +583,12 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final VecView size = rect(r).getSize();
+				final VecView size = toRect(r).getSize();
 				final VecView center = centerTo.getRect().getCenter();
 				
-				return new Rect(center.sub(size.half()), size);
+				return new FixedRect(center.sub(size.half()), size);
 			}
 		};
 	}
@@ -571,15 +599,16 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				VecView size = rect(r).getSize();
+				final VecView size = toRect(r).getSize();
 				
-				return new Rect(vec(centerTo).sub(size.half()), size);
+				return new FixedRect(vec(centerTo).sub(size.half()), size);
 			}
 		};
 	}
 	
+	
 	public static RectConstraint _align(final RectConstraint r, final Vec centerTo)
 	{
 		return _align(r, new VecWrapper(centerTo));
@@ -591,12 +620,12 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				final VecView size = rect(r).getSize();
-				final VecView v = new CoordValue(num(x), num(y));
+				final VecView size = toRect(r).getSize();
+				final VecView v = new FixedCoord(toDouble(x), toDouble(y));
 				
-				return new Rect(v.sub(size.half()), size);
+				return new FixedRect(v.sub(size.half()), size);
 			}
 		};
 	}
@@ -607,11 +636,11 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				Vec v = move.getVec();
+				final Vec v = move.getVec();
 				
-				return rect(r).move(v);
+				return toRect(r).move(v);
 			}
 		};
 	}
@@ -622,24 +651,24 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).move(num(x), num(y));
+				return toRect(r).move(toDouble(x), toDouble(y));
 			}
 		};
 	}
 	
 	
-	/* ================= Rect bounds ================= */
+	/* ================= RectView bounds ================= */
 	
 	public static RectConstraint _left_edge(final RectConstraint r)
 	{
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, 0, rect(r).getWidth(), 0);
+				return toRect(r).shrink(0, 0, toRect(r).getWidth(), 0);
 			}
 		};
 	}
@@ -650,9 +679,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, 0, 0, rect(r).getHeight());
+				return toRect(r).shrink(0, 0, 0, toRect(r).getHeight());
 			}
 		};
 	}
@@ -663,9 +692,9 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(rect(r).getWidth(), 0, 0, 0);
+				return toRect(r).shrink(toRect(r).getWidth(), 0, 0, 0);
 			}
 		};
 	}
@@ -676,16 +705,14 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				return rect(r).shrink(0, rect(r).getHeight(), 0, 0);
+				return toRect(r).shrink(0, toRect(r).getHeight(), 0, 0);
 			}
 		};
 	}
 	
 	
-	/* ================= Coords ================= */
-	
 	public static NumberConstraint _x(final VecConstraint c)
 	{
 		return new NumberConstraint() {
@@ -780,21 +807,21 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return vec(c).x() + num(x);
+				return vec(c).x() + toDouble(x);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return vec(c).y() + num(y);
+				return vec(c).y() + toDouble(y);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return vec(c).z() + num(z);
+				return vec(c).z() + toDouble(z);
 			}
 			
 		});
@@ -844,21 +871,21 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return vec(c).x() - num(x);
+				return vec(c).x() - toDouble(x);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return vec(c).y() - num(y);
+				return vec(c).y() - toDouble(y);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return vec(c).z() - num(z);
+				return vec(c).z() - toDouble(z);
 			}
 			
 		});
@@ -874,21 +901,21 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return vec(c).x() * num(mul);
+				return vec(c).x() * toDouble(mul);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return vec(c).y() * num(mul);
+				return vec(c).y() * toDouble(mul);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return vec(c).z() * num(mul);
+				return vec(c).z() * toDouble(mul);
 			}
 			
 		});
@@ -904,7 +931,7 @@ public class Constraints {
 			@Override
 			public VecView getVec()
 			{
-				return rect(r).getOrigin();
+				return toRect(r).getOrigin();
 			}
 		};
 	}
@@ -917,7 +944,7 @@ public class Constraints {
 			@Override
 			public VecView getVec()
 			{
-				return rect(r).getSize();
+				return toRect(r).getSize();
 			}
 		};
 	}
@@ -990,7 +1017,7 @@ public class Constraints {
 	
 	
 	/**
-	 * Zero-sized rect at given coord
+	 * Zero-sized RectView at given coord
 	 * 
 	 * @param c coord
 	 * @return rect
@@ -1000,11 +1027,11 @@ public class Constraints {
 		return new RectConstraint() {
 			
 			@Override
-			public Rect getRect()
+			public RectView getRect()
 			{
-				Vec v = vec(c);
+				final Vec v = vec(c);
 				
-				return new Rect(v.x(), v.y(), 0, 0);
+				return new FixedRect(v.x(), v.y(), 0, 0);
 			}
 		};
 	}
@@ -1041,7 +1068,61 @@ public class Constraints {
 			}
 		};
 	}
-    /* ================= Coords ================= */
+	
+	/* ================= Variables ================= */
+	
+	public static final NumberConstraint _mouseX = new NumberConstraint() {
+		
+		@Override
+		public double getValue()
+		{
+			return InputSystem.getMousePos().x();
+		}
+	};
+	
+	public static final NumberConstraint _mouseY = new NumberConstraint() {
+		
+		@Override
+		public double getValue()
+		{
+			return InputSystem.getMousePos().y();
+		}
+	};
+	public static final NumberConstraint _mousePos = new NumberConstraint() {
+		
+		@Override
+		public double getValue()
+		{
+			return InputSystem.getMousePos().y();
+		}
+	};
+	
+	public static final NumberConstraint _screenW = new NumberConstraint() {
+		
+		@Override
+		public double getValue()
+		{
+			return DisplaySystem.getWidth();
+		}
+	};
+	
+	public static final NumberConstraint _screenH = new NumberConstraint() {
+		
+		@Override
+		public double getValue()
+		{
+			return DisplaySystem.getHeight();
+		}
+	};
+	
+	
+	/* ================= Arithmetics ================= */
+	
+	/* ================= Layout utilities ================= */
+	
+	/* ================= Coords ================= */
+	
+	/* ================= Coords ================= */
 	
 	public static NumberConstraint _x(final Vec c)
 	{
@@ -1116,21 +1197,21 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return c.x() + num(x);
+				return c.x() + toDouble(x);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return c.y() + num(y);
+				return c.y() + toDouble(y);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return c.z() + num(z);
+				return c.z() + toDouble(z);
 			}
 			
 		};
@@ -1180,21 +1261,21 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return c.x() - num(x);
+				return c.x() - toDouble(x);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return c.y() - num(y);
+				return c.y() - toDouble(y);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return c.z() - num(z);
+				return c.z() - toDouble(z);
 			}
 			
 		};
@@ -1210,35 +1291,36 @@ public class Constraints {
 			@Override
 			public double x()
 			{
-				return c.x() * num(mul);
+				return c.x() * toDouble(mul);
 			}
 			
 			
 			@Override
 			public double y()
 			{
-				return c.y() * num(mul);
+				return c.y() * toDouble(mul);
 			}
 			
 			
 			@Override
 			public double z()
 			{
-				return c.z() * num(mul);
+				return c.z() * toDouble(mul);
 			}
 			
 		};
 	}
 	
+	
 	public static VecView _origin(final Rect r)
 	{
-		return r.getOrigin().view();
+		return r.getOrigin();
 	}
 	
 	
 	public static VecView _size(final Rect r)
 	{
-		return r.getSize().view();
+		return r.getSize();
 	}
 	
 	
@@ -1306,78 +1388,4 @@ public class Constraints {
 	{
 		return _add(_origin(r), _width(r), _half(_height(r)));
 	}
-	
-	/* ================= Helpers ================= */
-	
-	public static RectCache _cache(final RectConstraint rc)
-	{
-		return new RectCache(rc);
-	}
-	
-	
-	public static RectCache _cache(final Poller poller, final RectConstraint rc)
-	{
-		return new RectCache(poller, rc);
-	}
-	
-	
-	/**
-	 * Convert {@link Number} to {@link NumberConstraint} if needed
-	 * 
-	 * @param o unknown numeric value
-	 * @return converted
-	 */
-	public static NumberConstraint _n(final Object o)
-	{
-		if (o instanceof NumberConstraint) return (NumberConstraint) o;
-		
-		if (o instanceof Number) return new NumberConstraint() {
-			
-			@Override
-			public double getValue()
-			{
-				return ((Number) o).doubleValue();
-			}
-		};
-		
-		throw new IllegalArgumentException("Invalid numeric type.");
-	}
-	
-	
-	/**
-	 * Convert {@link Number} or {@link NumberConstraint} to double (current
-	 * value)
-	 * 
-	 * @param o unknown numeric value
-	 * @return double value
-	 */
-	private static double num(final Object o)
-	{
-		return _n(o).getValue();
-	}
-	
-	
-	/**
-	 * Convert {@link VecConstraint} to {@link VecArith}.
-	 * 
-	 * @param o unknown numeric value
-	 * @return double value
-	 */
-	private static VecView vec(final VecConstraint o)
-	{
-		return o.getVec();
-	}
-	
-	
-	/**
-	 * Convert {@link RectConstraint} to {@link Rect}.
-	 * 
-	 * @param o unknown numeric value
-	 * @return double value
-	 */
-	private static Rect rect(final RectConstraint o)
-	{
-		return o.getRect();
-	}
-	
 }

src/mightypork/utils/math/constraints/ContextAdapter.java

@@ -1,7 +1,7 @@
 package mightypork.utils.math.constraints;
 
 
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -22,7 +22,7 @@ public abstract class ContextAdapter implements PluggableContext {
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
 		return backing.getRect();
 	}

src/mightypork/utils/math/constraints/NumberConstraint.java

@@ -26,6 +26,7 @@ public interface NumberConstraint {
 		}
 	};
 	
+	
 	/**
 	 * @return current value
 	 */

src/mightypork/utils/math/constraints/PluggableContext.java

@@ -1,7 +1,7 @@
 package mightypork.utils.math.constraints;
 
 
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -18,6 +18,6 @@ public interface PluggableContext extends RectConstraint {
 	
 	
 	@Override
-	abstract Rect getRect();
+	abstract RectView getRect();
 	
 }

src/mightypork/utils/math/constraints/RectCache.java

@@ -3,7 +3,8 @@ package mightypork.utils.math.constraints;
 
 import mightypork.gamecore.control.timing.Pollable;
 import mightypork.gamecore.control.timing.Poller;
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.MutableRect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -16,7 +17,7 @@ import mightypork.utils.math.rect.Rect;
 public class RectCache implements RectConstraint, Pollable {
 	
 	private final RectConstraint observed;
-	private final Rect cached = new Rect();
+	private final MutableRect cached = new MutableRect();
 	
 	
 	/**
@@ -41,9 +42,9 @@ public class RectCache implements RectConstraint, Pollable {
 	
 	
 	@Override
-	public Rect getRect()
+	public RectView getRect()
 	{
-		return cached;
+		return cached.view();
 	}
 	
 	

src/mightypork/utils/math/constraints/RectConstraint.java

@@ -1,7 +1,7 @@
 package mightypork.utils.math.constraints;
 
 
-import mightypork.utils.math.rect.Rect;
+import mightypork.utils.math.rect.RectView;
 
 
 /**
@@ -14,5 +14,5 @@ public interface RectConstraint {
 	/**
 	 * @return rect region
 	 */
-	Rect getRect();
+	RectView getRect();
 }

src/mightypork/utils/math/constraints/VecConstraint.java

@@ -1,8 +1,10 @@
 package mightypork.utils.math.constraints;
 
+
 import mightypork.utils.math.coord.VecView;
 
 
 public interface VecConstraint {
+	
 	VecView getVec();
 }

src/mightypork/utils/math/coord/AnimCoord.java

@@ -12,7 +12,7 @@ import mightypork.utils.math.animation.Easing;
  * 
  * @author MightyPork
  */
-public class AnimCoord extends VecMutableImpl<AnimCoord> implements Pauseable, Updateable {
+public class AnimCoord extends VecMutableImpl implements Pauseable, Updateable {
 	
 	private final AnimDouble x, y, z;
 	
@@ -63,9 +63,18 @@ public class AnimCoord extends VecMutableImpl<AnimCoord> implements Pauseable, U
 	}
 	
 	
-	public AnimCoord add(VecArith offset, double speed)
+	public AnimCoord add(Vec offset, double speed)
 	{
-		animate(offset.add(this), speed);
+		animate(offset.x() - x(), offset.y() - y(), offset.z() - z(), speed);
+		return this;
+	}
+	
+	
+	public AnimCoord animate(double x, double y, double z, double duration)
+	{
+		this.x.animate(x, duration);
+		this.y.animate(y, duration);
+		this.z.animate(z, duration);
 		return this;
 	}
 	
@@ -81,8 +90,8 @@ public class AnimCoord extends VecMutableImpl<AnimCoord> implements Pauseable, U
 	
 	public void animateWithSpeed(Vec target, double unitsPerSecond)
 	{
-		double dist = distTo(target);
-		double duration = dist / unitsPerSecond;
+		final double dist = distTo(target);
+		final double duration = dist / unitsPerSecond;
 		animate(target, duration);
 	}
 	
@@ -126,4 +135,21 @@ public class AnimCoord extends VecMutableImpl<AnimCoord> implements Pauseable, U
 		return x.isFinished(); // BUNO
 	}
 	
+	
+	public double getDuration()
+	{
+		return x.getDuration(); // BUNO
+	}
+	
+	
+	public double getElapsed()
+	{
+		return x.getElapsed(); // BUNO
+	}
+	
+	
+	public double getProgress()
+	{
+		return x.getProgress(); // BUNO
+	}
 }

src/mightypork/utils/math/coord/CoordProxy.java

@@ -1,12 +1,14 @@
 package mightypork.utils.math.coord;
 
-import mightypork.utils.math.constraints.VecConstraint;
-
 
 /**
- * <p><b>[ Use Vec.view() method to make a proxy! ]</b></p>
- * <p>View of another coordinate, immutable.<br>
- * Operations yield a new {@link MutableCoord} with the result.</p>
+ * <p>
+ * <b>[ Use Vec.view() method to make a proxy! ]</b>
+ * </p>
+ * <p>
+ * View of another coordinate, immutable.<br>
+ * Operations yield a new {@link MutableCoord} with the result.
+ * </p>
  * 
  * @author MightyPork
  */
@@ -25,6 +27,7 @@ public class CoordProxy extends VecView {
 		this.observed = observed;
 	}
 	
+	
 	@Override
 	public CoordProxy view()
 	{

src/mightypork/utils/math/coord/FixedCoord.java

@@ -1,30 +1,28 @@
 package mightypork.utils.math.coord;
 
 
-
-
 /**
  * Coordinate with immutable numeric values.<br>
  * Operations yield a new {@link MutableCoord} with the result.
  * 
  * @author MightyPork
  */
-public class CoordValue extends VecView {
+public class FixedCoord extends VecView {
 	
 	private final double x, y, z;
 	
 	
-	public CoordValue(Vec other) {
+	public FixedCoord(Vec other) {
 		this(other.x(), other.y(), other.z());
 	}
 	
 	
-	public CoordValue(double x, double y) {
+	public FixedCoord(double x, double y) {
 		this(x, y, 0);
 	}
 	
 	
-	public CoordValue(double x, double y, double z) {
+	public FixedCoord(double x, double y, double z) {
 		this.x = x;
 		this.y = y;
 		this.z = z;

src/mightypork/utils/math/coord/MutableCoord.java

@@ -7,7 +7,7 @@ package mightypork.utils.math.coord;
  * 
  * @author MightyPork
  */
-public class MutableCoord extends VecMutableImpl<MutableCoord> {
+public class MutableCoord extends VecMutableImpl {
 	
 	private double x, y, z;
 	

src/mightypork/utils/math/coord/SynthCoord2D.java

@@ -1,7 +1,5 @@
 package mightypork.utils.math.coord;
 
-import mightypork.utils.math.constraints.NumberConstraint;
-
 
 /**
  * 2D coord for anonymous implementations.<br>
@@ -14,9 +12,11 @@ public abstract class SynthCoord2D extends VecView {
 	@Override
 	public abstract double x();
 	
+	
 	@Override
 	public abstract double y();
 	
+	
 	@Override
 	public double z()
 	{

src/mightypork/utils/math/coord/SynthCoord3D.java

@@ -1,9 +1,6 @@
 package mightypork.utils.math.coord;
 
 
-import mightypork.utils.math.constraints.NumberConstraint;
-
-
 /**
  * 3D immutable coord for anonymous implementations.<br>
  * Operations yield a new {@link MutableCoord} with the result.

src/mightypork/utils/math/coord/Vec.java

@@ -4,10 +4,15 @@ package mightypork.utils.math.coord;
 import mightypork.utils.math.constraints.NumberConstraint;
 
 
+/**
+ * The most basic Vec methods
+ * 
+ * @author MightyPork
+ */
 public interface Vec {
 	
-	public static final VecView ZERO = new CoordValue(0, 0, 0);
-	public static final VecView ONE = new CoordValue(1, 1, 1);
+	public static final VecView ZERO = new FixedCoord(0, 0, 0);
+	public static final VecView ONE = new FixedCoord(1, 1, 1);
 	
 	
 	/**
@@ -87,7 +92,7 @@ public interface Vec {
 	 * 
 	 * @return a mutable copy
 	 */
-	MutableCoord copy();
+	VecMutable copy();
 	
 	
 	/**
@@ -95,7 +100,6 @@ public interface Vec {
 	 * 
 	 * @return immutable view
 	 */
-	CoordProxy view();
-	
+	VecView view();
 	
 }

src/mightypork/utils/math/coord/VecMath.java

@@ -1,14 +1,12 @@
 package mightypork.utils.math.coord;
 
-import mightypork.utils.math.constraints.VecConstraint;
-
 
 /**
  * 3D coordinate methods
  * 
  * @author MightyPork
  */
-interface VecArith extends Vec {
+interface VecMath<V> extends Vec {
 	
 	/**
 	 * Set X coordinate (if immutable, in a copy).
@@ -16,7 +14,7 @@ interface VecArith extends Vec {
 	 * @param x x coordinate
 	 * @return result
 	 */
-	Vec setX(double x);
+	V setX(double x);
 	
 	
 	/**
@@ -25,7 +23,7 @@ interface VecArith extends Vec {
 	 * @param y y coordinate
 	 * @return result
 	 */
-	Vec setY(double y);
+	V setY(double y);
 	
 	
 	/**
@@ -34,7 +32,7 @@ interface VecArith extends Vec {
 	 * @param z z coordinate
 	 * @return result
 	 */
-	Vec setZ(double z);
+	V setZ(double z);
 	
 	
 	/**
@@ -63,18 +61,27 @@ interface VecArith extends Vec {
 	double size();
 	
 	
+	/**
+	 * Get absolute value (positive)
+	 * 
+	 * @return result
+	 */
+	V abs();
+	
+	
 	/**
 	 * @return true if zero
 	 */
 	boolean isZero();
 	
+	
 	/**
 	 * Create vector from this point to other point
 	 * 
 	 * @param point second point
 	 * @return result
 	 */
-	Vec vecTo(Vec point);
+	V vecTo(Vec point);
 	
 	
 	/**
@@ -83,7 +90,7 @@ interface VecArith extends Vec {
 	 * @param point other point
 	 * @return result
 	 */
-	Vec midTo(Vec point);
+	V midTo(Vec point);
 	
 	
 	/**
@@ -92,7 +99,7 @@ interface VecArith extends Vec {
 	 * @param vec offset
 	 * @return result
 	 */
-	Vec add(Vec vec);
+	V add(Vec vec);
 	
 	
 	/**
@@ -103,7 +110,7 @@ interface VecArith extends Vec {
 	 * @param y y offset
 	 * @return result
 	 */
-	Vec add(double x, double y);
+	V add(double x, double y);
 	
 	
 	/**
@@ -114,7 +121,7 @@ interface VecArith extends Vec {
 	 * @param z z offset
 	 * @return result
 	 */
-	Vec add(double x, double y, double z);
+	V add(double x, double y, double z);
 	
 	
 	/**
@@ -122,7 +129,7 @@ interface VecArith extends Vec {
 	 * 
 	 * @return result
 	 */
-	Vec half();
+	V half();
 	
 	
 	/**
@@ -131,7 +138,7 @@ interface VecArith extends Vec {
 	 * @param d multiplier
 	 * @return result
 	 */
-	Vec mul(double d);
+	V mul(double d);
 	
 	
 	/**
@@ -140,7 +147,7 @@ interface VecArith extends Vec {
 	 * @param vec vector of multipliers
 	 * @return result
 	 */
-	Vec mul(Vec vec);
+	V mul(Vec vec);
 	
 	
 	/**
@@ -151,7 +158,7 @@ interface VecArith extends Vec {
 	 * @param y y multiplier
 	 * @return result
 	 */
-	Vec mul(double x, double y);
+	V mul(double x, double y);
 	
 	
 	/**
@@ -162,7 +169,7 @@ interface VecArith extends Vec {
 	 * @param z z multiplier
 	 * @return result
 	 */
-	Vec mul(double x, double y, double z);
+	V mul(double x, double y, double z);
 	
 	
 	/**
@@ -170,7 +177,7 @@ interface VecArith extends Vec {
 	 * 
 	 * @return result
 	 */
-	Vec round();
+	V round();
 	
 	
 	/**
@@ -178,7 +185,7 @@ interface VecArith extends Vec {
 	 * 
 	 * @return result
 	 */
-	Vec floor();
+	V floor();
 	
 	
 	/**
@@ -186,7 +193,7 @@ interface VecArith extends Vec {
 	 * 
 	 * @return result
 	 */
-	Vec ceil();
+	V ceil();
 	
 	
 	/**
@@ -195,7 +202,7 @@ interface VecArith extends Vec {
 	 * @param vec offset
 	 * @return result
 	 */
-	Vec sub(Vec vec);
+	V sub(Vec vec);
 	
 	
 	/**
@@ -206,7 +213,7 @@ interface VecArith extends Vec {
 	 * @param y y offset
 	 * @return result
 	 */
-	VecArith sub(double x, double y);
+	V sub(double x, double y);
 	
 	
 	/**
@@ -217,7 +224,7 @@ interface VecArith extends Vec {
 	 * @param z z offset
 	 * @return result
 	 */
-	Vec sub(double x, double y, double z);
+	V sub(double x, double y, double z);
 	
 	
 	/**
@@ -225,7 +232,7 @@ interface VecArith extends Vec {
 	 * 
 	 * @return result
 	 */
-	Vec neg();
+	V neg();
 	
 	
 	/**
@@ -234,7 +241,7 @@ interface VecArith extends Vec {
 	 * @param size size we need
 	 * @return result
 	 */
-	Vec norm(double size);
+	V norm(double size);
 	
 	
 	/**
@@ -243,6 +250,6 @@ interface VecArith extends Vec {
 	 * @param vec other vector
 	 * @return result
 	 */
-	public Vec cross(Vec vec);
+	V cross(Vec vec);
 	
 }

src/mightypork/utils/math/coord/VecMathImpl.java

@@ -10,7 +10,7 @@ import mightypork.utils.math.constraints.NumberConstraint;
  * @author MightyPork
  * @param <V> Return type of methods
  */
-abstract class VecImpl<V extends VecArith> implements VecArith {
+abstract class VecMathImpl<V> implements VecMath<V> {
 	
 	private NumberConstraint constraintZ, constraintY, constraintX;
 	
@@ -89,14 +89,14 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	
 	
 	@Override
-	public MutableCoord copy()
+	public VecMutable copy()
 	{
 		return new MutableCoord(this);
 	}
 	
 	
 	@Override
-	public CoordProxy view()
+	public VecView view()
 	{
 		if (view == null) view = new CoordProxy(this);
 		
@@ -176,7 +176,7 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	@Override
 	public double size()
 	{
-		double x = x(), y = y(), z = z();
+		final double x = x(), y = y(), z = z();
 		return Math.sqrt(x * x + y * y + z * z);
 	}
 	
@@ -188,6 +188,13 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	}
 	
 	
+	@Override
+	public V abs()
+	{
+		return result(Math.abs(x()), Math.abs(y()), Math.abs(z()));
+	}
+	
+	
 	@Override
 	public V add(Vec vec)
 	{
@@ -212,9 +219,9 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	@Override
 	public double distTo(Vec point)
 	{
-		double dx = x() - point.x();
-		double dy = y() - point.y();
-		double dz = z() - point.z();
+		final double dx = x() - point.x();
+		final double dy = y() - point.y();
+		final double dz = z() - point.z();
 		
 		return Math.sqrt(dx * dx + dy * dy + dz * dz);
 	}
@@ -223,9 +230,9 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	@Override
 	public V midTo(Vec point)
 	{
-		double dx = (point.x() - x()) * 0.5;
-		double dy = (point.y() - y()) * 0.5;
-		double dz = (point.z() - z()) * 0.5;
+		final double dx = (point.x() - x()) * 0.5;
+		final double dy = (point.y() - y()) * 0.5;
+		final double dz = (point.z() - z()) * 0.5;
 		
 		return result(dx, dy, dz);
 	}
@@ -346,7 +353,7 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	{
 		if (isZero()) return result(x(), y(), z()); // can't norm zero vector
 			
-		double k = size / size();
+		final double k = size / size();
 		
 		return mul(k);
 	}
@@ -355,7 +362,7 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 	@Override
 	public int hashCode()
 	{
-		int prime = 31;
+		final int prime = 31;
 		int result = 1;
 		result = prime * result + Double.valueOf(x()).hashCode();
 		result = prime * result + Double.valueOf(y()).hashCode();
@@ -370,11 +377,12 @@ abstract class VecImpl<V extends VecArith> implements VecArith {
 		if (this == obj) return true;
 		if (obj == null) return false;
 		if (!(obj instanceof Vec)) return false;
-		Vec other = (Vec) obj;
+		final Vec other = (Vec) obj;
 		
 		return x() == other.x() && y() == other.y() && z() == other.z();
 	}
 	
+	
 	@Override
 	public String toString()
 	{

src/mightypork/utils/math/coord/VecMutable.java

@@ -2,11 +2,11 @@ package mightypork.utils.math.coord;
 
 
 /**
- * Mutable coord interface. This coord can be changed at will.
+ * Mutable coord
  * 
  * @author MightyPork
  */
-public interface VecMutable extends VecArith {
+public interface VecMutable extends VecMath<VecMutable> {
 	
 	/**
 	 * Set coordinates to match other coord.

src/mightypork/utils/math/coord/VecMutableImpl.java

@@ -5,21 +5,23 @@ package mightypork.utils.math.coord;
  * Mutable vec default implementation
  * 
  * @author MightyPork
- * @param <V> Return type of methods
  */
-abstract class VecMutableImpl<V extends VecMutable> extends VecImpl<V> implements VecMutable {
+abstract class VecMutableImpl extends VecMathImpl<VecMutable> implements VecMutable {
 	
 	@Override
 	public abstract double x();
 	
+	
 	@Override
 	public abstract double y();
 	
+	
 	@Override
 	public abstract double z();
 	
+	
 	@Override
-	public abstract V result(double x, double y, double z);
+	public abstract VecMutable result(double x, double y, double z);
 	
 	
 	@Override
@@ -30,14 +32,14 @@ abstract class VecMutableImpl<V extends VecMutable> extends VecImpl<V> implement
 	
 	
 	@Override
-	public V setTo(double x, double y, double z)
+	public VecMutable setTo(double x, double y, double z)
 	{
 		return result(x, y, z);
 	}
 	
 	
 	@Override
-	public V setTo(double x, double y)
+	public VecMutable setTo(double x, double y)
 	{
 		return result(x, y, z());
 	}

src/mightypork/utils/math/coord/VecView.java

@@ -1,19 +1,24 @@
 package mightypork.utils.math.coord;
 
-import mightypork.utils.math.constraints.VecConstraint;
-
-
 
 /**
- * Read-only coordinate, operations with it will yield a new {@link MutableCoord} with the result.
+ * Read-only coordinate, operations with it will yield a new
+ * {@link MutableCoord} with the result.
  * 
  * @author MightyPork
  */
-public abstract class VecView extends VecImpl<CoordValue> {	
+public abstract class VecView extends VecMathImpl<VecView> {
+	
+	@Override
+	public VecView result(double x, double y, double z)
+	{
+		return new FixedCoord(x, y, z);
+	}
+	
 	
 	@Override
-	public CoordValue result(double x, double y, double z)
+	public VecView view()
 	{
-		return new CoordValue(x,y,z);
+		return this; // already not mutable
 	}
 }

src/mightypork/utils/math/rect/FixedRect.java

@@ -0,0 +1,105 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.FixedCoord;
+import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecView;
+
+
+public class FixedRect extends RectView {
+	
+	private final VecView pos;
+	private final VecView size;
+	
+	
+	/**
+	 * Create at 0,0 with zero size
+	 */
+	public FixedRect() {
+		pos = Vec.ZERO;
+		size = Vec.ZERO;
+	}
+	
+	
+	/**
+	 * Create at 0,0 with given size
+	 * 
+	 * @param width
+	 * @param height
+	 */
+	public FixedRect(double width, double height) {
+		this(0, 0, width, height);
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param origin
+	 * @param width
+	 * @param height
+	 */
+	public FixedRect(Vec origin, double width, double height) {
+		this(origin.x(), origin.y(), width, height);
+	}
+	
+	
+	/**
+	 * Create at 0,0 with given size.
+	 * 
+	 * @param size
+	 */
+	public FixedRect(Vec size) {
+		this(0, 0, size.x(), size.y());
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param origin
+	 * @param size
+	 */
+	public FixedRect(Vec origin, Vec size) {
+		this(origin.x(), origin.y(), size.x(), size.y());
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param x
+	 * @param y
+	 * @param width
+	 * @param height
+	 */
+	public FixedRect(double x, double y, double width, double height) {
+		pos = new FixedCoord(x, y);
+		size = new FixedCoord(Math.abs(width), Math.abs(height));
+	}
+	
+	
+	/**
+	 * Create as copy of another
+	 * 
+	 * @param other copied
+	 */
+	public FixedRect(Rect other) {
+		this(other.getOrigin(), other.getSize());
+	}
+	
+	
+	@Override
+	public VecView getOrigin()
+	{
+		return pos;
+	}
+	
+	
+	@Override
+	public VecView getSize()
+	{
+		return size;
+	}
+	
+}

src/mightypork/utils/math/rect/MutableRect.java

@@ -0,0 +1,233 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.MutableCoord;
+import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecMutable;
+import mightypork.utils.math.coord.VecView;
+
+
+public class MutableRect extends RectImpl<RectMutable> implements RectMutable {
+	
+	private final VecMutable pos = new MutableCoord();
+	private final VecMutable size = new MutableCoord();
+	
+	
+	/**
+	 * Create at 0,0 with zero size
+	 */
+	public MutableRect() {
+		// keep default zeros
+	}
+	
+	
+	/**
+	 * Create at 0,0 with given size
+	 * 
+	 * @param width
+	 * @param height
+	 */
+	public MutableRect(double width, double height) {
+		this.pos.setTo(0, 0);
+		this.size.setTo(width, height).abs();
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param origin
+	 * @param width
+	 * @param height
+	 */
+	public MutableRect(Vec origin, double width, double height) {
+		this.pos.setTo(origin);
+		this.size.setTo(width, height).abs();
+	}
+	
+	
+	/**
+	 * Create at 0,0 with given size.
+	 * 
+	 * @param size
+	 */
+	public MutableRect(Vec size) {
+		this(0, 0, size.x(), size.y());
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param origin
+	 * @param size
+	 */
+	public MutableRect(Vec origin, Vec size) {
+		this.pos.setTo(origin);
+		this.size.setTo(size).abs();
+	}
+	
+	
+	/**
+	 * Create at given origin, with given size.
+	 * 
+	 * @param x
+	 * @param y
+	 * @param width
+	 * @param height
+	 */
+	public MutableRect(double x, double y, double width, double height) {
+		pos.setTo(x, y);
+		size.setTo(width, height).abs();
+	}
+	
+	
+	/**
+	 * Create as copy of another
+	 * 
+	 * @param other copied
+	 */
+	public MutableRect(Rect other) {
+		this(other.getOrigin(), other.getSize());
+	}
+	
+	
+	/**
+	 * Set to other rect's coordinates
+	 * 
+	 * @param rect other rect
+	 */
+	@Override
+	public void setTo(Rect rect)
+	{
+		setTo(rect.getOrigin(), rect.getSize());
+	}
+	
+	
+	@Override
+	public void setTo(Vec origin, Vec size)
+	{
+		this.pos.setTo(origin);
+		this.size.setTo(size).abs();
+	}
+	
+	
+	@Override
+	public void setTo(Vec origin, double width, double height)
+	{
+		this.pos.setTo(origin);
+		this.size.setTo(width, height).abs();
+	}
+	
+	
+	@Override
+	public void setOrigin(Vec origin)
+	{
+		this.pos.setTo(origin);
+	}
+	
+	
+	@Override
+	public void setSize(Vec size)
+	{
+		this.size.setTo(size).abs();
+	}
+	
+	
+	/**
+	 * Add X and Y to origin
+	 * 
+	 * @param x x to add
+	 * @param y y to add
+	 * @return result
+	 */
+	@Override
+	public RectMutable move(double x, double y)
+	{
+		pos.add(x, y);
+		return this;
+	}
+	
+	
+	/**
+	 * Get a copy
+	 * 
+	 * @return copy
+	 */
+	@Override
+	public RectMutable copy()
+	{
+		return new MutableRect(this);
+	}
+	
+	
+	/**
+	 * Shrink the rect
+	 * 
+	 * @param left shrink
+	 * @param top shrink
+	 * @param right shrink
+	 * @param bottom shrink
+	 * @return result
+	 */
+	@Override
+	public RectMutable shrink(double left, double top, double right, double bottom)
+	{
+		pos.add(left, top);
+		size.sub(left + right, top + bottom).abs();
+		return this;
+	}
+	
+	
+	/**
+	 * Grow the rect
+	 * 
+	 * @param left growth
+	 * @param top growth
+	 * @param right growth
+	 * @param bottom growth
+	 * @return result
+	 */
+	@Override
+	public RectMutable grow(double left, double top, double right, double bottom)
+	{
+		pos.sub(left, top);
+		size.add(left + right, top + bottom).abs();
+		return this;
+	}
+	
+	
+	/**
+	 * Round coords
+	 * 
+	 * @return result
+	 */
+	@Override
+	public RectMutable round()
+	{
+		pos.round();
+		size.round();
+		return this;
+	}
+	
+	
+	@Override
+	public VecView getOrigin()
+	{
+		return pos.view();
+	}
+	
+	
+	@Override
+	public VecView getSize()
+	{
+		return size.view();
+	}
+	
+	
+	@Override
+	public RectView view()
+	{
+		return new FixedRect(this);
+	}
+}

src/mightypork/utils/math/rect/Rect.java

@@ -1,398 +1,75 @@
 package mightypork.utils.math.rect;
 
 
-import mightypork.utils.math.constraints.RectConstraint;
-import mightypork.utils.math.constraints.VecConstraint;
-import mightypork.utils.math.coord.MutableCoord;
-import mightypork.utils.math.coord.SynthCoord2D;
-import mightypork.utils.math.coord.Vec;
-import mightypork.utils.math.coord.VecMutable;
 import mightypork.utils.math.coord.VecView;
 
 
-public class Rect {
+/**
+ * Common methods for all kinds of Rects
+ * 
+ * @author MightyPork
+ */
+public interface Rect {
 	
-	public static final Rect ONE = new Rect(0, 0, 1, 1); // FIXME
-	private final VecMutable pos = new MutableCoord();
-	private final VecMutable size = new MutableCoord();
-	private final VecView center = new SynthCoord2D() {
-		
-		@Override
-		public double y()
-		{
-			return pos.x() + size.x() / 2;
-		}
-		
-		
-		@Override
-		public double x()
-		{
-			return pos.y() + size.y() / 2;
-		}
-	};
-	
-	
-	/**
-	 * Create at 0,0 with zero size
-	 */
-	public Rect() {
-		// keep default zeros
-	}
+	RectView ONE = new FixedRect(0, 0, 1, 1);
+	RectView ZERO = new FixedRect(0, 0, 0, 0);
 	
 	
 	/**
-	 * Create at 0,0 with given size
-	 * 
-	 * @param width
-	 * @param height
-	 */
-	public Rect(double width, double height) {
-		this.pos.setTo(0, 0);
-		this.size.setTo(width, height);
-		norm();
-	}
-	
-	
-	/**
-	 * Create at given origin, with given size.
-	 * 
-	 * @param origin
-	 * @param width
-	 * @param height
-	 */
-	public Rect(Vec origin, double width, double height) {
-		this.pos.setTo(origin);
-		this.size.setTo(width, height);
-		norm();
-	}
-	
-	
-	/**
-	 * make sure the rect doesn't have negative size.
-	 */
-	private void norm()
-	{
-		if (size.x() < 0) {
-			pos.sub(-size.x(), 0);
-			size.mul(-1, 1);
-		}
-		
-		if (size.y() < 0) {
-			pos.sub(0, -size.y());
-			size.mul(1, -1);
-		}
-	}
-	
-	
-	/**
-	 * Create at given origin, with given size.
-	 * 
-	 * @param origin
-	 * @param size
-	 */
-	public Rect(Vec origin, Vec size) {
-		this.pos.setTo(origin);
-		this.size.setTo(size);
-		norm();
-	}
-	
-	
-	/**
-	 * Create at given origin, with given size.
-	 * 
-	 * @param x
-	 * @param y
-	 * @param width
-	 * @param height
-	 */
-	public Rect(double x, double y, double width, double height) {
-		pos.setTo(x, y);
-		size.setTo(width, height);
-		norm();
-	}
-	
-	
-	/**
-	 * Create as copy of another
-	 * 
-	 * @param other copied
-	 */
-	public Rect(Rect other) {
-		this(other.pos, other.size);
-	}
-	
-	
-	/**
-	 * Set to other rect's coordinates
-	 * 
-	 * @param rect other rect
-	 */
-	public void setTo(Rect rect)
-	{
-		setTo(rect.pos, rect.size);
-	}
-	
-	
-	public void setTo(Vec origin, Vec size)
-	{
-		this.pos.setTo(origin);
-		this.size.setTo(size);
-		norm();
-	}
-	
-	
-	public void setOrigin(Vec origin)
-	{
-		this.pos.setTo(origin);
-		norm();
-	}
-	
-	
-	public void setSize(Vec size)
-	{
-		this.size.setTo(size);
-		norm();
-	}
-	
-	
-	/**
-	 * Add vector to origin
-	 * 
-	 * @param move offset vector
-	 * @return result
-	 */
-	public Rect move(Vec move)
-	{
-		move(move.x(), move.y());
-		return this;
-	}
-	
-	
-	/**
-	 * Add X and Y to origin
-	 * 
-	 * @param x x to add
-	 * @param y y to add
-	 * @return result
-	 */
-	public Rect move(double x, double y)
-	{
-		pos.add(x, y);
-		return this;
-	}
-	
-	
-	/**
-	 * Get a copy
+	 * Get a writable copy
 	 * 
 	 * @return copy
 	 */
-	public Rect copy()
-	{
-		return new Rect(this);
-	}
-	
-	
-	/**
-	 * Shrink to sides
-	 * 
-	 * @param shrink shrink size (horisontal and vertical)
-	 * @return result
-	 */
-	public Rect shrink(Vec shrink)
-	{
-		return shrink(shrink.x(), shrink.y());
-	}
-	
-	
-	/**
-	 * Shrink to sides at sides
-	 * 
-	 * @param x horizontal shrink
-	 * @param y vertical shrink
-	 * @return result
-	 */
-	public Rect shrink(double x, double y)
-	{
-		return shrink(x, y, x, y);
-	}
-	
-	
-	/**
-	 * Shrink the rect
-	 * 
-	 * @param left shrink
-	 * @param top shrink
-	 * @param right shrink
-	 * @param bottom shrink
-	 * @return result
-	 */
-	public Rect shrink(double left, double top, double right, double bottom)
-	{
-		pos.add(left, top);
-		size.sub(left + right, top + bottom);
-		norm();
-		return this;
-	}
+	RectMutable copy();
 	
 	
 	/**
-	 * Grow to sides
+	 * Get a readonly copy
 	 * 
-	 * @param grow grow size (added to each side)
-	 * @return grown copy
-	 */
-	public Rect grow(Vec grow)
-	{
-		return grow(grow.x(), grow.y());
-	}
-	
-	
-	/**
-	 * Grow to sides
-	 * 
-	 * @param x horizontal grow
-	 * @param y vertical grow
-	 * @return result
+	 * @return copy
 	 */
-	public Rect grow(double x, double y)
-	{
-		return grow(x, y, x, y);
-	}
+	RectView view();
 	
 	
 	/**
-	 * Grow the rect
-	 * 
-	 * @param left growth
-	 * @param top growth
-	 * @param right growth
-	 * @param bottom growth
-	 * @return result
+	 * @return origin
 	 */
-	public Rect grow(double left, double top, double right, double bottom)
-	{
-		pos.sub(left, top);
-		size.add(left + right, top + bottom);
-		norm();
-		return this;
-	}
+	VecView getOrigin();
 	
 	
 	/**
-	 * Check if point is inside this rectangle
-	 * 
-	 * @param point point to test
-	 * @return is inside
+	 * @return center
 	 */
-	public boolean contains(Vec point)
-	{
-		final double x = point.x(), y = point.y();
-		
-		final double x1 = pos.x(), y1 = pos.y();
-		final double x2 = x1 + size.x(), y2 = y1 + size.y();
-		
-		return x >= x1 && y >= y1 && x <= x2 && y <= y2;
-	}
+	VecView getCenter();
 	
 	
 	/**
-	 * Round coords
-	 * 
-	 * @return result
+	 * @return rect size
 	 */
-	public Rect round()
-	{
-		pos.round();
-		size.round();
-		return this;
-	}
+	VecView getSize();
 	
 	
 	/**
-	 * Get offset copy (subtract)
-	 * 
-	 * @param move offset vector
-	 * @return result
+	 * @return rect width
 	 */
-	public Rect sub(Vec move)
-	{
-		return sub(move.x(), move.y());
-	}
+	double getWidth();
 	
 	
 	/**
-	 * Subtract X and Y from all coordinates
-	 * 
-	 * @param x x to subtract
-	 * @param y y to subtract
-	 * @return result
+	 * @return rect height
 	 */
-	Rect sub(double x, double y)
-	{
-		pos.sub(x, y);
-		norm();
-		return this;
-	}
-	
-	
-	public VecView getOrigin()
-	{
-		return pos.view();
-	}
-	
-	
-	public VecView getSize()
-	{
-		return size.view();
-	}
-	
-	
-	public VecView getCenter()
-	{
-		return center;
-	}
-	
-	
-	public double getWidth()
-	{
-		return size.x();
-	}
-	
-	
-	public double getHeight()
-	{
-		return size.y();
-	}
-	
+	double getHeight();
 	
-	@Override
-	public String toString()
-	{
-		return String.format("[%s-%s]", pos.toString(), pos.view().add(size).toString());
-	}
 	
+	double xMin();
 	
-	public double xMin()
-	{
-		return pos.x();
-	}
 	
+	double xMax();
 	
-	public double xMax()
-	{
-		return pos.x() + size.x();
-	}
 	
+	double yMin();
 	
-	public double yMin()
-	{
-		return pos.y();
-	}
 	
+	double yMax();
 	
-	public double yMax()
-	{
-		return pos.y() + size.y();
-	}
 }

src/mightypork/utils/math/rect/RectImpl.java

@@ -0,0 +1,121 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecView;
+
+
+public abstract class RectImpl<T extends Rect> implements RectMath<T> {
+	
+	@Override
+	public final VecView getCenter()
+	{
+		return getOrigin().add(getSize().half());
+	}
+	
+	
+	@Override
+	public final double getWidth()
+	{
+		return getSize().x();
+	}
+	
+	
+	@Override
+	public final double getHeight()
+	{
+		return getSize().y();
+	}
+	
+	
+	@Override
+	public final double xMin()
+	{
+		return getOrigin().x();
+	}
+	
+	
+	@Override
+	public final double xMax()
+	{
+		return getOrigin().x() + getSize().x();
+	}
+	
+	
+	@Override
+	public final double yMin()
+	{
+		return getOrigin().y();
+	}
+	
+	
+	@Override
+	public final double yMax()
+	{
+		return getOrigin().y() + getSize().y();
+	}
+	
+	
+	@Override
+	public final T move(Vec move)
+	{
+		return move(move.x(), move.y());
+	}
+	
+	
+	@Override
+	public final T shrink(Vec shrink)
+	{
+		return shrink(shrink.x(), shrink.y());
+	}
+	
+	
+	@Override
+	public final T shrink(double x, double y)
+	{
+		return shrink(x, y, x, y);
+	}
+	
+	
+	@Override
+	public final T grow(Vec grow)
+	{
+		return grow(grow.x(), grow.y());
+	}
+	
+	
+	@Override
+	public final T grow(double x, double y)
+	{
+		return grow(x, y, x, y);
+	}
+	
+	
+	@Override
+	public RectView view()
+	{
+		return new RectProxy(this);
+	}
+	
+	
+	@Override
+	public final boolean contains(Vec point)
+	{
+		final double x = point.x();
+		final double y = point.y();
+		
+		final double x1 = getOrigin().x();
+		final double y1 = getOrigin().y();
+		final double x2 = x1 + getSize().x();
+		final double y2 = y1 + getSize().y();
+		
+		return x >= x1 && y >= y1 && x <= x2 && y <= y2;
+	}
+	
+	
+	@Override
+	public String toString()
+	{
+		return String.format("Rect[ %s - %s ]", getOrigin().toString(), getOrigin().add(getSize()));
+	}
+}

src/mightypork/utils/math/rect/RectMath.java

@@ -0,0 +1,111 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.Vec;
+
+
+/**
+ * Operations available in rects
+ * 
+ * @author MightyPork
+ */
+interface RectMath<T extends Rect> extends Rect {
+	
+	/**
+	 * Add vector to origin
+	 * 
+	 * @param move offset vector
+	 * @return result
+	 */
+	T move(Vec move);
+	
+	
+	/**
+	 * Add X and Y to origin
+	 * 
+	 * @param x x to add
+	 * @param y y to add
+	 * @return result
+	 */
+	T move(double x, double y);
+	
+	
+	/**
+	 * Shrink to sides
+	 * 
+	 * @param shrink shrink size (horisontal and vertical)
+	 * @return result
+	 */
+	T shrink(Vec shrink);
+	
+	
+	/**
+	 * Shrink to sides at sides
+	 * 
+	 * @param x horizontal shrink
+	 * @param y vertical shrink
+	 * @return result
+	 */
+	T shrink(double x, double y);
+	
+	
+	/**
+	 * Shrink the rect
+	 * 
+	 * @param left shrink
+	 * @param top shrink
+	 * @param right shrink
+	 * @param bottom shrink
+	 * @return result
+	 */
+	T shrink(double left, double top, double right, double bottom);
+	
+	
+	/**
+	 * Grow to sides
+	 * 
+	 * @param grow grow size (added to each side)
+	 * @return grown copy
+	 */
+	T grow(Vec grow);
+	
+	
+	/**
+	 * Grow to sides
+	 * 
+	 * @param x horizontal grow
+	 * @param y vertical grow
+	 * @return result
+	 */
+	T grow(double x, double y);
+	
+	
+	/**
+	 * Grow the rect
+	 * 
+	 * @param left growth
+	 * @param top growth
+	 * @param right growth
+	 * @param bottom growth
+	 * @return result
+	 */
+	T grow(double left, double top, double right, double bottom);
+	
+	
+	/**
+	 * Check if point is inside this rectangle
+	 * 
+	 * @param point point to test
+	 * @return is inside
+	 */
+	boolean contains(Vec point);
+	
+	
+	/**
+	 * Round coords
+	 * 
+	 * @return result
+	 */
+	T round();
+	
+}

src/mightypork/utils/math/rect/RectMutable.java

@@ -0,0 +1,28 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.Vec;
+
+
+public interface RectMutable extends Rect {
+	
+	/**
+	 * Set to other rect's coordinates
+	 * 
+	 * @param rect other rect
+	 */
+	void setTo(Rect rect);
+	
+	
+	void setTo(Vec origin, Vec size);
+	
+	
+	void setTo(Vec origin, double width, double height);
+	
+	
+	void setOrigin(Vec origin);
+	
+	
+	void setSize(Vec size);
+	
+}

src/mightypork/utils/math/rect/RectProxy.java

@@ -0,0 +1,35 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.VecView;
+
+
+/**
+ * Immutable rect accessor
+ * 
+ * @author MightyPork
+ */
+public class RectProxy extends RectView {
+	
+	private final Rect observed;
+	
+	
+	public RectProxy(Rect observed) {
+		this.observed = observed;
+	}
+	
+	
+	@Override
+	public VecView getOrigin()
+	{
+		return observed.getOrigin();
+	}
+	
+	
+	@Override
+	public VecView getSize()
+	{
+		return observed.getSize();
+	}
+	
+}

src/mightypork/utils/math/rect/RectView.java

@@ -0,0 +1,69 @@
+package mightypork.utils.math.rect;
+
+
+import mightypork.utils.math.coord.VecView;
+
+
+/**
+ * Immutable rect
+ * 
+ * @author MightyPork
+ */
+public abstract class RectView extends RectImpl<RectView> {
+	
+	protected RectView result(VecView origin, VecView size)
+	{
+		return new FixedRect(origin, size);
+	}
+	
+	
+	@Override
+	public RectView move(double x, double y)
+	{
+		return result(getOrigin().add(x, y), getSize());
+	}
+	
+	
+	@Override
+	public RectView shrink(double left, double top, double right, double bottom)
+	{
+		return result(getOrigin().add(left, top), getSize().sub(left + right, top + bottom));
+	}
+	
+	
+	@Override
+	public RectView grow(double left, double top, double right, double bottom)
+	{
+		return result(getOrigin().sub(left, top), getSize().add(left + right, top + bottom));
+	}
+	
+	
+	@Override
+	public RectView round()
+	{
+		return result(getOrigin().round(), getSize().round());
+	}
+	
+	
+	@Override
+	public MutableRect copy()
+	{
+		return new MutableRect(this);
+	}
+	
+	
+	@Override
+	public RectView view()
+	{
+		return this;
+	}
+	
+	
+	@Override
+	public abstract VecView getOrigin();
+	
+	
+	@Override
+	public abstract VecView getSize();
+	
+}

src/mightypork/utils/math/rect/xx/RectCalc.java

@@ -1,3 +1,6 @@
+package mightypork.utils.math.rect.xx;
+
+
 //package mightypork.utils.math.rect;
 //
 //import mightypork.utils.math.constraints.NumberConstraint;

src/mightypork/utils/math/rect/xx/Rectd.java

@@ -1,3 +1,6 @@
+package mightypork.utils.math.rect.xx;
+
+
 //package mightypork.utils.math.rect;
 //
 //
@@ -17,8 +20,8 @@
 // */
 //public class Rectd implements RectConstraint, IRect {
 //	
-//	public static final IRect ZERO = new Rect(0, 0, 0, 0).freeze();
-//	public static final Rect ONE = new Rect(0, 0, 1, 1).freeze();
+//	public static final IRect ZERO = new FixedRect(0, 0, 0, 0).freeze();
+//	public static final Rect ONE = new FixedRect(0, 0, 1, 1).freeze();
 //	
 //	
 //	/**
@@ -44,7 +47,7 @@
 //	 */
 //	public static Rect fromSize(VecArith min, double width, double height)
 //	{
-//		return new Rect(min.copy(), min.add(width, height));
+//		return new FixedRect(min.copy(), min.add(width, height));
 //	}
 //	
 //	
@@ -84,7 +87,7 @@
 //	 */
 //	public static Rect fromSize(double xmin, double ymin, double width, double height)
 //	{
-//		return new Rect(xmin, ymin, xmin + width, ymin + height);
+//		return new FixedRect(xmin, ymin, xmin + width, ymin + height);
 //	}
 //	
 //	/** Lowest coordinates xy */
@@ -304,7 +307,7 @@
 //	@Override
 //	public Rect copy()
 //	{
-//		return new Rect(this);
+//		return new FixedRect(this);
 //	}
 //	
 //	
@@ -704,7 +707,7 @@
 //	@Override
 //	public Rect round()
 //	{
-//		return new Rect(min.round(), max.round());
+//		return new FixedRect(min.round(), max.round());
 //	}
 //	
 //	
@@ -877,7 +880,7 @@
 //	
 //	
 //	@Override
-//	public Rect getRect()
+//	public RectView getRect()
 //	{
 //		return this;
 //	}

src/mightypork/utils/objects/Convert.java

@@ -3,7 +3,9 @@ package mightypork.utils.objects;
 
 import mightypork.utils.logging.Log;
 import mightypork.utils.math.Range;
-import mightypork.utils.math.coord.*;
+import mightypork.utils.math.coord.FixedCoord;
+import mightypork.utils.math.coord.Vec;
+import mightypork.utils.math.coord.VecView;
 
 
 /**
@@ -153,8 +155,8 @@ public class Convert {
 	public static VecView toCoord(Object o, Vec def)
 	{
 		try {
-			if (o == null) return new CoordValue(def);
-			if (o instanceof Vec) return new CoordValue((Vec) o);
+			if (o == null) return new FixedCoord(def);
+			if (o instanceof Vec) return new FixedCoord((Vec) o);
 			if (o instanceof String) {
 				String s = ((String) o).trim().toUpperCase();
 				
@@ -170,19 +172,19 @@ public class Convert {
 					final double y = Double.parseDouble(parts[1].trim());
 					
 					if (parts.length == 2) {
-						return new CoordValue(x, y);
+						return new FixedCoord(x, y);
 					}
 					
 					final double z = Double.parseDouble(parts[2].trim());
 					
-					return new CoordValue(x, y, z);
+					return new FixedCoord(x, y, z);
 				}
 			}
 		} catch (final NumberFormatException | ArrayIndexOutOfBoundsException e) {
 			// ignore
 		}
 		
-		return new CoordValue(def);
+		return new FixedCoord(def);
 	}