Get the HSI coding of the current color.
get_hsi returns the output color or grayvalues, respectively, for the 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 do not necessarily match the values set with set_hsi exactly (colors are stored in RGB internally).
|
WindowHandle (input_control) |
window -> integer |
| Window_id. | |
|
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 2 (H_MSG_TRUE), if the window is valid. Otherwise an exception handling is raised.
get_hsi is reentrant and processed without parallelization.
set_hsi, set_color, set_rgb, trans_to_rgb, trans_from_rgb
Foundation
