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113 lines
2.2 KiB
113 lines
2.2 KiB
package mightypork.gamecore.render.textures;
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import mightypork.util.constraints.rect.Rect;
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import mightypork.util.constraints.rect.RectConst;
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/**
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* Texture Quad (describing a part of a texture)
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*
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* @author MightyPork
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*/
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public class TxQuad {
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/** The texture */
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public final GLTexture tx;
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/** Coords in texture (0-1) */
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public final RectConst uvs;
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/**
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* TxQuad from origin and size in pixels
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*
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* @param tx texture
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* @param xPx left top X (0-1)
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* @param yPx left top Y (0-1)
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* @param widthPx area width (0-1)
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* @param heightPx area height (0-1)
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* @return new TxQuad
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*/
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public static TxQuad fromSizePx(GLTexture tx, double xPx, double yPx, double widthPx, double heightPx)
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{
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final double w = tx.getImageWidth();
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final double h = tx.getImageHeight();
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return fromSize(tx, xPx / w, yPx / h, widthPx / w, heightPx / h);
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}
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/**
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* TxQuad from origin and size 0-1
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*
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* @param tx texture
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* @param x1 left top X (0-1)
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* @param y1 left top Y (0-1)
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* @param width area width (0-1)
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* @param height area height (0-1)
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* @return new TxQuad
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*/
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public static TxQuad fromSize(GLTexture tx, double x1, double y1, double width, double height)
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{
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return new TxQuad(tx, x1, y1, x1 + width, y1 + height);
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}
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/**
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* Make of coords
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*
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* @param tx texture
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* @param x1 left top X (0-1)
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* @param y1 left top Y (0-1)
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* @param x2 right bottom X (0-1)
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* @param y2 right bottom Y (0-1)
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*/
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public TxQuad(GLTexture tx, double x1, double y1, double x2, double y2) {
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this(tx, Rect.make(x1, y1, x2, y2));
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}
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/**
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* @param tx Texture
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* @param uvs Rect of texture UVs (0-1); will be frozen.
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*/
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public TxQuad(GLTexture tx, Rect uvs) {
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this.tx = tx;
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this.uvs = uvs.freeze();
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}
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/**
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* Clone another
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*
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* @param txQuad a copied quad
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*/
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public TxQuad(TxQuad txQuad) {
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this.tx = txQuad.tx;
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this.uvs = txQuad.uvs;
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}
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/**
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* Get copy
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*
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* @return copy of this
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*/
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public TxQuad copy()
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{
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return new TxQuad(this);
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}
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/**
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* Make a sheet starting with this quad, spannign to right and down.
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*
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* @param width sheet width
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* @param height sheet height
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* @return sheet
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*/
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public TxSheet makeSheet(int width, int height)
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{
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return new TxSheet(this, width, height);
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}
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}
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