func RGBAColorSubNumber(c *ast.RGBAColor, n *ast.Number) *ast.RGBAColor {
var val = uint32(n.Value)
var r = uintsub(c.R, val)
var g = uintsub(c.G, val)
var b = uintsub(c.B, val)
return ast.NewRGBAColor(r, g, b, c.A, nil)
}
func RGBAColorMulNumber(c *ast.RGBAColor, n *ast.Number) *ast.RGBAColor {
var val = uint32(n.Value)
var r = c.R * val
var g = c.G * val
var b = c.B * val
return ast.NewRGBAColor(r, g, b, c.A, nil)
}
func RGBAColorDivNumber(c *ast.RGBAColor, n *ast.Number) *ast.RGBAColor {
var val = n.Value
var r = math.Floor(float64(c.R) / val)
var g = math.Floor(float64(c.G) / val)
var b = math.Floor(float64(c.B) / val)
return ast.NewRGBAColor(uint32(r), uint32(g), uint32(b), c.A, nil)
}