public putPixelClip ( int x, int y, float v ) : void | ||
x | int | |
y | int | |
v | float | |
return | void |
public Channel bump(Channel bumpmap, float lx, float ly, float shadow, float light, float ambient) { if(!(bumpmap.getWidth() == width && bumpmap.getHeight() == height)) throw new Exception("bumpmap does not match channel size"); Channel channel = new Channel(width, height); for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { float nx = bumpmap.getPixelWrap(x + 1, y) - bumpmap.getPixelWrap(x - 1, y); float ny = bumpmap.getPixelWrap(x, y + 1) - bumpmap.getPixelWrap(x, y - 1); float brightness = nx*lx + ny*ly; if (brightness >= 0) { channel.putPixelClip(x, y, (getPixel(x, y) + brightness*light)*(bumpmap.getPixel(x, y)*shadow + 1 - shadow)); } else { channel.putPixelClip(x, y, (getPixel(x, y) + brightness*(1 - ambient))*(bumpmap.getPixel(x, y)*shadow + 1 - shadow)); } } } pixels = channel.getPixels(); return this; }