package {

	import flash.filters.ConvolutionFilter;
	import flash.filters.ColorMatrixFilter;

	[SWF(width=550, height=400, backgroundColor=0xEEEEEE)]

	/**
	* Tests application of the ConvolutionFilter to a loaded image.
	*/
	public class graphic_flex_image_effects_02_Flex_ConvolutionFilterTest extends graphic_flex_image_effects_02_Flex_ImageFilterTest {

		/**
		* Applies the ConvolutionFilter to the loaded bitmap.
		*/
		override protected function applyFilter():void {
			// the matrix to apply;
			// this matrix creates a woodcut effect
			var matrix:Array = [
				-1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1,
				-1, -1, 24, -1, -1,
				-1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1
			];
			// calculate a divisor that is the sum of the matrix components
			var divisor:Number = 0;
			for each (var index:Number in matrix) {
				divisor += index;
			}
			var filter:ConvolutionFilter = new ConvolutionFilter();
			filter.matrixX = 5;
			filter.matrixY = 5;
			filter.matrix = matrix;
			filter.divisor = 1;
			filter.bias = 0;

			// a matrix to invert the colors of the image
			matrix = [
				-1,  0,  0, 0, 255,
				 0, -1,  0, 0, 255,
				 0,  0, -1, 0, 255,
				 0,  0,  0, 1, 0
			];
			var colorFilter:ColorMatrixFilter = new ColorMatrixFilter(matrix);

			// both filters are applied to the loaded image
			_bitmap.filters = [filter, colorFilter];
		}

	}

}