Procedurality.Channel.cropWrap C# (CSharp) Method

		public Channel cropWrap(int x_lo, int y_lo, int x_hi, int y_hi) {
			int new_width = x_hi - x_lo + 1;
			int new_height = y_hi - y_lo + 1;
			Channel channel = new Channel(new_width, new_height);
			for (int y = 0; y < new_height; y++) {
				int y_old = y + y_lo;
				for (int x = 0; x < new_width; x++) {
					int x_old = x + x_lo;
					if (x_old < 0 || x_old >= width || y_old < 0 || y_old >= height) {
						channel.putPixel(x, y, getPixelWrap(x_old, y_old));
					} else {
						channel.putPixel(x, y, getPixel(x_old, y_old));
					}
				}
			}
			return channel;
		}