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added Image.drawImage

This commit is contained in:
DaniTheSkunk 2022-09-15 23:11:35 +02:00
parent ef937886cc
commit 4a16dbfc9f
1 changed files with 25 additions and 8 deletions
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33
com/danitheskunk/skunkworks/Image.java
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@ -43,18 +43,35 @@ public class Image {
public Color getPixel(Vec2i pos) { public Color getPixel(Vec2i pos) {
int i = pos.getX() * 4 + pos.getY() * 4 * size.getX(); int i = pos.getX() * 4 + pos.getY() * 4 * size.getX();
return new Color( return new Color(
((int)data[i + 0]) & 0xFF, ((int) data[i + 0]) & 0xFF,
((int)data[i + 1]) & 0xFF, ((int) data[i + 1]) & 0xFF,
((int)data[i + 2]) & 0xFF, ((int) data[i + 2]) & 0xFF,
((int)data[i + 3]) & 0xFF ((int) data[i + 3]) & 0xFF
); );
} }
public void setPixel(Vec2i pos, Color col) { public void setPixel(Vec2i pos, Color col) {
int i = pos.getX() * 4 + pos.getY() * 4 * size.getX(); int i = pos.getX() * 4 + pos.getY() * 4 * size.getX();
data[i + 0] = (byte)(col.r & 0xFF); data[i + 0] = (byte) (col.r & 0xFF);
data[i + 1] = (byte)(col.g & 0xFF); data[i + 1] = (byte) (col.g & 0xFF);
data[i + 2] = (byte)(col.b & 0xFF); data[i + 2] = (byte) (col.b & 0xFF);
data[i + 3] = (byte)(col.a & 0xFF); data[i + 3] = (byte) (col.a & 0xFF);
}
public void drawImage(Image srcImage, Vec2i destPos) {
drawImage(srcImage, destPos, new Recti(Vec2i.ZERO, srcImage.getSize()));
}
public void drawImage(Image srcImage, Vec2i destPos, Recti srcRect) {
//todo: check bounds
//todo: write in faster way than pixel stuff
for(int y = 0; y < srcRect.getHeight(); ++y) {
for(int x = 0; x < srcRect.getWidth(); ++x) {
var iterPos = new Vec2i(x, y);
var to = Vec2i.add(destPos, iterPos);
var from = Vec2i.add(srcRect.getPos(), iterPos);
setPixel(to, srcImage.getPixel(from));
}
}
} }
} }