{\r
int width = (int)(sigma * 8), height = (int)(sigma * 8);\r
double width_half = width / 2.0, height_half = height / 2.0;\r
if (img==null || img.width != width || img.height != height)\r
img = new Image(width, height);\r
{\r
int width = (int)(sigma * 8), height = (int)(sigma * 8);\r
double width_half = width / 2.0, height_half = height / 2.0;\r
if (img==null || img.width != width || img.height != height)\r
img = new Image(width, height);\r