Definition of the pixel output function.
set_insert defines the function, with which pixels are displayed in the output window. It is e.g. possible for a pixel to overwrite the old value. In most of the cases there is a functional relationship between old and new values.
The definiton value is only valid for the active window. Output procedures that honor Mode are e.g. disp_region, disp_polygon,disp_circle.
Possible display functions are: 'copy' overwrite displayed pixels 'xor' display old "xor" new pixels 'not' complement displayed pixels
There may not be all functions available, depending on the physical display. However, "copy" is always available.
|
Mode (input_control) |
string -> string |
| name of the display function. | |
| Default value: 'copy' | |
| List of values: 'copy', 'xor', 'not' | |
set_insert returns TRUE, if the paramter is correct and a window is active. Otherwise an exception is raised.