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580 lines
10 KiB
580 lines
10 KiB
package mightypork.gamecore.render;
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import static org.lwjgl.opengl.GL11.*;
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import java.io.IOException;
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import mightypork.gamecore.render.textures.FilterMode;
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import mightypork.gamecore.render.textures.TxQuad;
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import mightypork.util.constraints.rect.Rect;
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import mightypork.util.constraints.rect.caching.RectDigest;
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import mightypork.util.constraints.vect.Vect;
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import mightypork.util.constraints.vect.VectConst;
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import mightypork.util.files.FileUtils;
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import mightypork.util.logging.Log;
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import mightypork.util.math.color.Color;
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import org.lwjgl.opengl.GL11;
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import org.newdawn.slick.opengl.Texture;
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import org.newdawn.slick.opengl.TextureImpl;
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import org.newdawn.slick.opengl.TextureLoader;
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import org.newdawn.slick.util.ResourceLoader;
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/**
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* Render utilities
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*
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* @author MightyPork
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*/
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public class Render {
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public static final VectConst AXIS_X = Vect.make(1, 0, 0);
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public static final VectConst AXIS_Y = Vect.make(0, 1, 0);
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public static final VectConst AXIS_Z = Vect.make(0, 0, 1);
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/**
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* Bind GL color
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*
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* @param color Color color
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*/
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public static void setColor(Color color)
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{
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if (color != null) glColor4d(color.red(), color.green(), color.blue(), color.alpha());
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}
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/**
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* Bind GL color
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*
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* @param color Color color
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* @param alpha alpha multiplier
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*/
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public static void setColor(Color color, double alpha)
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{
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if (color != null) glColor4d(color.red(), color.green(), color.blue(), color.alpha() * alpha);
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}
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/**
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* Translate
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*
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* @param x
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* @param y
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*/
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public static void translate(double x, double y)
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{
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glTranslated(x, y, 0);
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}
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/**
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* Translate
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*
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* @param x
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* @param y
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* @param z
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*/
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public static void translate(double x, double y, double z)
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{
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glTranslated(x, y, z);
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}
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/**
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* Translate with coord
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*
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* @param coord coord
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*/
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public static void translate(Vect coord)
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{
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glTranslated(coord.x(), coord.y(), coord.z());
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}
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/**
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* Translate with coord, discard Z
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*
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* @param coord coord
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*/
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public static void translateXY(Vect coord)
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{
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glTranslated(coord.x(), coord.y(), 0);
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}
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/**
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* Scale
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*
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* @param x
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* @param y
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*/
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public static void scale(double x, double y)
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{
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glScaled(x, y, 0);
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}
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/**
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* Scale
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*
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* @param x
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* @param y
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* @param z
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*/
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public static void scale(double x, double y, double z)
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{
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glScaled(x, y, z);
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}
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/**
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* Scale
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*
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* @param factor vector of scaling factors
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*/
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public static void scale(Vect factor)
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{
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glScaled(factor.x(), factor.y(), factor.z());
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}
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/**
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* Scale by X factor
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*
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* @param factor scaling factor
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*/
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public static void scaleXY(double factor)
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{
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glScaled(factor, factor, 1);
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}
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/**
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* Scale by X factor
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*
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* @param factor scaling factor
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*/
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public static void scaleX(double factor)
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{
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glScaled(factor, 1, 1);
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}
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/**
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* Scale by Y factor
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*
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* @param factor scaling factor
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*/
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public static void scaleY(double factor)
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{
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glScaled(1, factor, 1);
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}
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/**
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* Scale by Z factor
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*
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* @param factor scaling factor
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*/
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public static void scaleZ(double factor)
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{
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glScaled(1, 1, factor);
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}
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/**
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* Rotate around X axis
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*
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* @param angle deg
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*/
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public static void rotateX(double angle)
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{
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rotate(angle, AXIS_X);
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}
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/**
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* Rotate around Y axis
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*
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* @param angle deg
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*/
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public static void rotateY(double angle)
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{
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rotate(angle, AXIS_Y);
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}
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/**
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* Rotate around Z axis
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*
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* @param angle deg
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*/
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public static void rotateZ(double angle)
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{
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rotate(angle, AXIS_Z);
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}
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/**
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* Rotate
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*
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* @param angle rotate angle
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* @param axis rotation axis
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*/
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public static void rotate(double angle, Vect axis)
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{
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final Vect vec = axis.norm(1);
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glRotated(angle, vec.x(), vec.y(), vec.z());
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}
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private static int pushed = 0;
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/**
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* Store GL state
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*/
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public static void pushState()
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{
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pushed++;
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if (pushed >= 20) {
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Log.w("Suspicious number of state pushes: " + pushed);
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}
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GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
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GL11.glPushClientAttrib(GL11.GL_ALL_CLIENT_ATTRIB_BITS);
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GL11.glMatrixMode(GL11.GL_MODELVIEW);
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GL11.glPushMatrix();
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GL11.glMatrixMode(GL11.GL_PROJECTION);
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GL11.glPushMatrix();
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GL11.glMatrixMode(GL11.GL_MODELVIEW);
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}
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/**
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* Restore Gl state
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*/
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public static void popState()
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{
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if (pushed == 0) {
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Log.w("Pop without push.");
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}
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pushed--;
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GL11.glMatrixMode(GL11.GL_PROJECTION);
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GL11.glPopMatrix();
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GL11.glMatrixMode(GL11.GL_MODELVIEW);
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GL11.glPopMatrix();
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GL11.glPopClientAttrib();
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GL11.glPopAttrib();
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}
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/**
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* Store matrix
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*/
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public static void pushMatrix()
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{
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GL11.glPushMatrix();
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}
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/**
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* Restore Gl state
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*/
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public static void popMatrix()
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{
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GL11.glPopMatrix();
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}
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/**
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* Load texture
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*
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* @param resourcePath
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* @param filtering filtering mode to use while loading.
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* @return the loaded texture
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*/
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public synchronized static Texture loadTexture(String resourcePath, FilterMode filtering)
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{
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try {
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final String ext = FileUtils.getExtension(resourcePath).toUpperCase();
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final Texture texture = TextureLoader.getTexture(ext, ResourceLoader.getResourceAsStream(resourcePath), false, filtering.num);
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if (texture == null) {
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Log.w("Texture " + resourcePath + " could not be loaded.");
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}
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return texture;
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} catch (final IOException e) {
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Log.e("Loading of texture " + resourcePath + " failed.", e);
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throw new RuntimeException("Could not load texture " + resourcePath + ".", e);
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}
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}
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/**
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* Bind texture
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*
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* @param texture the texture
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* @throws RuntimeException if not loaded yet
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*/
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private static void bindTexture(Texture texture) throws RuntimeException
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{
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texture.bind();
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}
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/**
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* Unbind all
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*/
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private static void unbindTexture()
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{
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//if (TextureImpl.getLastBind() != null) {
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TextureImpl.bindNone();
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//}
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}
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/**
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* Render quad 2D
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*
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* @param rect rectangle
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* @param color draw color
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*/
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public static void quad(Rect rect, Color color)
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{
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setColor(color);
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quad(rect);
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}
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/**
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* Render quad
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*
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* @param quad the quad to draw (px)
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*/
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public static void quad(Rect quad)
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{
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final RectDigest q = quad.digest();
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// draw with color
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unbindTexture();
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// quad
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glBegin(GL_QUADS);
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glVertex2d(q.left, q.bottom);
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glVertex2d(q.right, q.bottom);
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glVertex2d(q.right, q.top);
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glVertex2d(q.left, q.top);
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glEnd();
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}
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/**
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* Render textured rect (texture must be binded already)
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*
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* @param quad rectangle (px)
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* @param uvs texture coords (0-1)
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*/
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public static void quadUV(Rect quad, Rect uvs)
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{
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glBegin(GL_QUADS);
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quadUV_nobound(quad, uvs);
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glEnd();
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}
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/**
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* Draw quad without glBegin and glEnd.
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*
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* @param quad rectangle (px)
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* @param uvs texture coords (0-1)
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*/
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public static void quadUV_nobound(Rect quad, Rect uvs)
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{
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final RectDigest q = quad.digest();
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final RectDigest u = uvs.digest();
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// quad with texture
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glTexCoord2d(u.left, u.bottom);
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glVertex2d(q.left, q.bottom);
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glTexCoord2d(u.right, u.bottom);
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glVertex2d(q.right, q.bottom);
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glTexCoord2d(u.right, u.top);
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glVertex2d(q.right, q.top);
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glTexCoord2d(u.left, u.top);
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glVertex2d(q.left, q.top);
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}
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/**
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* Draw quad with horizontal gradient
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*
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* @param quad drawn quad bounds
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* @param color1 left color
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* @param color2 right color
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*/
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public static void quadGradH(Rect quad, Color color1, Color color2)
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{
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quadColor(quad, color1, color2, color2, color1);
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}
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/**
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* Draw quad with coloured vertices.
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*
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* @param quad drawn quad bounds
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* @param colorHMinVMin
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* @param colorHMaxVMin
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* @param colorHMaxVMax
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* @param colorHMinVMax
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*/
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public static void quadColor(Rect quad, Color colorHMinVMin, Color colorHMaxVMin, Color colorHMaxVMax, Color colorHMinVMax)
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{
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final RectDigest r = quad.digest();
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// draw with color
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unbindTexture();
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glBegin(GL_QUADS);
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setColor(colorHMinVMax);
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glVertex2d(r.left, r.bottom);
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setColor(colorHMaxVMax);
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glVertex2d(r.right, r.bottom);
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setColor(colorHMaxVMin);
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glVertex2d(r.right, r.top);
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setColor(colorHMinVMin);
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glVertex2d(r.left, r.top);
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glEnd();
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}
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/**
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* Draw quad with vertical gradient
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*
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* @param quad drawn quad bounds
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* @param color1 top color
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* @param color2 bottom color
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*/
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public static void quadGradV(Rect quad, Color color1, Color color2)
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{
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quadColor(quad, color1, color1, color2, color2);
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}
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/**
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* Render textured rect
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*
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* @param quad rectangle (px)
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* @param uvs texture coords rectangle (0-1)
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* @param texture texture instance
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* @param tint color tint
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*/
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public static void quadTextured(Rect quad, Rect uvs, Texture texture, Color tint)
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{
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bindTexture(texture);
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setColor(tint);
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quadUV(quad, uvs);
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unbindTexture();
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}
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/**
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* Render textured rect
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*
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* @param quad rectangle (px)
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* @param uvs texture coords rectangle (px)
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* @param texture texture instance
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*/
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public static void quadTextured(Rect quad, Rect uvs, Texture texture)
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{
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quadTextured(quad, uvs, texture, Color.WHITE);
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}
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/**
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* Render textured rect
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*
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* @param quad rectangle (px)
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* @param texture texture instance
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*/
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public static void quadTextured(Rect quad, Texture texture)
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{
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quadTextured(quad, Rect.ONE, texture, Color.WHITE);
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}
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/**
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* Render textured rect
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*
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* @param quad rectangle (px)
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* @param txquad texture quad
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*/
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public static void quadTextured(Rect quad, TxQuad txquad)
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{
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quadTextured(quad, txquad, Color.WHITE);
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}
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/**
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* Render textured rect
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*
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* @param quad rectangle (px)
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* @param txquad texture instance
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* @param tint color tint
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*/
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public static void quadTextured(Rect quad, TxQuad txquad, Color tint)
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{
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quadTextured(quad, txquad.uvs, txquad.tx, tint);
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}
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/**
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* Setup Ortho projection for 2D graphics
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*
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* @param size viewport size (screen size)
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*/
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public static void setupOrtho(Vect size)
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{
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// fix projection for changed size
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glViewport(0, 0, size.xi(), size.yi());
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glOrtho(0, size.xi(), size.yi(), 0, -1000, 1000);
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// back to modelview
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glDisable(GL_LIGHTING);
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glClearDepth(1f);
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glEnable(GL_DEPTH_TEST);
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glDepthFunc(GL_LEQUAL);
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glEnable(GL_NORMALIZE);
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glShadeModel(GL_SMOOTH);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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}
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