Procedurality.Channel.rotate C# (CSharp) Method

		public Channel rotate(int degrees) {
			Channel channel = null;
			int tmp = width;
			switch (degrees) {
				case 90:
					channel = new Channel(height, width);
					for (int y = 0; y < height; y++) {
						for (int x = 0; x < width; x++) {
							channel.putPixel(y, width - x - 1, getPixel(x, y));
						}
					}
					width = height;
					height = tmp;
					break;
				case 180:
					channel = new Channel(width, height);
					for (int y = 0; y < height; y++) {
						for (int x = 0; x < width; x++) {
							channel.putPixel(width - x - 1, height - y - 1, getPixel(x, y));
					}
					}
					break;
				case 270:
					channel = new Channel(height, width);
					for (int y = 0; y < height; y++) {
						for (int x = 0; x < width; x++) {
							channel.putPixel(height - y - 1, x, getPixel(x, y));
						}
					}
					width = height;
					height = tmp;
					break;
				default:
					throw new Exception("Rotation degrees not a multiple of 90");
			}
			pixels = channel.getPixels();
			return this;
		}