/**
* Copies pixels from Raster srcRaster to this WritableRaster. For each (x, y) address in
* srcRaster, the corresponding pixel is copied to address (x+dx, y+dy) in this WritableRaster,
* unless (x+dx, y+dy) falls outside the bounds of this raster. srcRaster must have the same
* number of bands as this WritableRaster. The copy is a simple copy of source samples to the
* corresponding destination samples. For details, see {@link WritableRaster#setRect(Raster)}.
*
* @param dx The X translation factor from src space to dst space of the copy.
* @param dy The Y translation factor from src space to dst space of the copy.
* @param srcRaster The Raster from which to copy pixels.
*/
public void setRect(int dx, int dy, Raster srcRaster) {
// Check if we can use fast code
if (!(srcRaster instanceof BytePackedRaster)
|| ((BytePackedRaster) srcRaster).pixelBitStride != pixelBitStride) {
super.setRect(dx, dy, srcRaster);
return;
}
int width = srcRaster.getWidth();
int height = srcRaster.getHeight();
int srcOffX = srcRaster.getMinX();
int srcOffY = srcRaster.getMinY();
int dstOffX = dx + srcOffX;
int dstOffY = dy + srcOffY;
// Clip to this raster
if (dstOffX < this.minX) {
int skipX = this.minX - dstOffX;
width -= skipX;
srcOffX += skipX;
dstOffX = this.minX;
}
if (dstOffY < this.minY) {
int skipY = this.minY - dstOffY;
height -= skipY;
srcOffY += skipY;
dstOffY = this.minY;
}
if (dstOffX + width > this.maxX) {
width = this.maxX - dstOffX;
}
if (dstOffY + height > this.maxY) {
height = this.maxY - dstOffY;
}
setDataElements(
dstOffX, dstOffY, srcOffX, srcOffY, width, height, (BytePackedRaster) srcRaster);
}
