Predefined Functions – hue
| Function name: | hue – Return hue of argument |
| Synopsis: | hue(c) |
| Input data type | Output data type |
|---|---|
| color | real |
Description:
This function takes a color variable as input and returns the hue of the color. The hue of a color is always between 0 and 6. For more information about hue, saturation and luminance see HSL Colorspace.
Colors can be created by using one of the color creation functions:
Internally colors are stored in RGBA format. So in order to return the hue of a color, this function needs to do a color space conversion, which is quite slow.