Queries the HSI coding of the current color.
get_hsi returns the output color resp. greyvalues for the active window, described in Hue, Saturation and Intensity. get_hsi corresponds to the procedure get_pixel but returns the entries of the color lookup table instead of its indices. The values returned by get_hsi can be set with set_hsi.
The values returned by get_hsi may be inaccurate due to rounding errors. They don't necessarily match the values set with set_hsi exactly (colors are stored in RGB internally).
|
Hue (output_control) |
integer-array -> integer |
| hue (color value) of the current color. | |
|
Saturation (output_control) |
integer-array -> integer |
| Saturation of the current color. | |
|
Intensity (output_control) |
integer-array -> integer |
| Intensity of the current color. | |
get_hsi returns TRUE, if a window is active. Otherwise an exception is raised.
set_hsi, set_color, set_rgb, trans_to_rgb, trans_from_rgb