Documentation: ColourTrans_ConvertRGBToHSV
Programmer’s Reference Manuals
» Part 8 – Non-kernel input/output
» ColourTrans
» SWI Calls
» ColourTrans_ConvertRGBToHSV
ColourTrans_ConvertRGBToHSV
(SWI &40758)
| Entry | |
|---|---|
| R0 | Red component |
| R1 | Green component |
| R2 | Blue component |
| Exit | |
|---|---|
| R0 | Hue (0 – 360) |
| R1 | Saturation |
| R2 | Value |
Use
The purpose of this call is to convert the colour passed as RGB values to CMYK values.
Notes
The parameters passed are fixed point 32-bit numbers. The lower 16 bits (0 – 15) are used below the decimal point, and the upper 16 bits above the decimal point.
Hue values range from 0 – 360 (without any fractional element).
Hue is undefined for achromatic colours.
