private void initPresets() {
int[] dimensions = { 1, 2, 4, 8, 12, 20 };
for (int n = 1; n < dimensions.length; n++) {
ShapeBrush brush = new ShapeBrush();
brush.makeCircleBrush(dimensions[n] / 2);
brushes.add(brush);
}
for (int n = 0; n < dimensions.length; n++) {
ShapeBrush brush = new ShapeBrush();
brush.makeQuadBrush(new Rectangle(0, 0, dimensions[n], dimensions[n]));
brushes.add(brush);
}
}