/**
* Stores the Raster data at the specified location.
*
* @param dstX The absolute X coordinate of the destination pixel that will receive a copy of the
* upper-left pixel of the inRaster
* @param dstY The absolute Y coordinate of the destination pixel that will receive a copy of the
* upper-left pixel of the inRaster
* @param width The number of pixels to store horizontally
* @param height The number of pixels to store vertically
* @param inRaster Raster of data to place at x,y location.
*/
private void setDataElements(int dstX, int dstY, int width, int height, Raster inRaster) {
// Assume bounds checking has been performed previously
if (width <= 0 || height <= 0) {
return;
}
// Write inRaster (minX, minY) to (dstX, dstY)
int srcOffX = inRaster.getMinX();
int srcOffY = inRaster.getMinY();
int tdata[] = null;
if (inRaster instanceof IntegerComponentRaster
&& (pixelStride == 1)
&& (numDataElements == 1)) {
IntegerComponentRaster ict = (IntegerComponentRaster) inRaster;
if (ict.getNumDataElements() != 1) {
throw new ArrayIndexOutOfBoundsException("Number of bands" + " does not match");
}
// Extract the raster parameters
tdata = ict.getDataStorage();
int tss = ict.getScanlineStride();
int toff = ict.getDataOffset(0);
int srcOffset = toff;
int dstOffset = dataOffsets[0] + (dstY - minY) * scanlineStride + (dstX - minX);
// Fastest case. We can copy scanlines
if (ict.getPixelStride() == pixelStride) {
width *= pixelStride;
// Loop through all of the scanlines and copy the data
for (int startY = 0; startY < height; startY++) {
System.arraycopy(tdata, srcOffset, data, dstOffset, width);
srcOffset += tss;
dstOffset += scanlineStride;
}
markDirty();
return;
}
}
Object odata = null;
for (int startY = 0; startY < height; startY++) {
odata = inRaster.getDataElements(srcOffX, srcOffY + startY, width, 1, odata);
setDataElements(dstX, dstY + startY, width, 1, odata);
}
}
