public void place(Color c) throws Exception {
// find next coordinates in image
Pixel p;
if (pixelsAdded == 0) {
p = Main.Image[Main.START_Y * Main.WIDTH + Main.START_X];
} else if (pixelsAdded == MULT_SEED_DELAY) {
p = Main.Image[(Main.START_Y + Main.HEIGHT / 2) * Main.WIDTH + Main.START_X + Main.WIDTH / 3];
} else {
p = placeImpl(c);
}
assert (p.isEmpty);
p.isEmpty = false;
p.color = c;
pixelsAdded++;
changeQueue(p);
}
// TODO how to calculate minimum-difference pixels?
@Override
protected void changeQueue(Pixel p) {
// recalculate neighbors
for (Pixel np : p.neighbors) {
if (np.isEmpty) {
int r = 0, g = 0, b = 0, n = 0;
for (Pixel nnp : np.neighbors) {
if (!nnp.isEmpty) {
r += nnp.color.getRed();
g += nnp.color.getGreen();
b += nnp.color.getBlue();
n++;
}
}
np.nonEmptyNeigh++;
r /= n;
g /= n;
b /= n;
Color avg = new Color(r, g, b);
Color newBlock =
new Color(
r >> blockOffset & blockMask,
g >> blockOffset & blockMask,
b >> blockOffset & blockMask);
int blockIndex =
newBlock.getRed() * rOffset
+ newBlock.getGreen() * gOffset
+ newBlock.getBlue() * bOffset;
if (!np.inQueue) {
np.block = blockIndex;
np.inQueue = true;
pixelBlocks[blockIndex].add(np);
} else if (blockIndex != np.block) {
if (!pixelBlocks[np.block].remove(np)) {
System.out.println(
"Couldn't remove pixel "
+ np
+ ", even though it should be in block "
+ blockIndex
+ " !");
}
np.inQueue = true;
np.block = blockIndex;
pixelBlocks[blockIndex].add(np);
}
np.avg = avg;
}
}
}