1997
Spencer Kimball & Peter Mattis
Threshold the specified drawable.
This procedures generates a threshold map of the specified drawable. All pixels between the values of 'low_threshold' and 'high_threshold' are replaced with white, and all other pixels with black.
unknown
Type | Name | Description |
---|---|---|
PF_DRAWABLE | drawable | The drawable |
PF_INT | low-threshold | The low threshold value (0 <= low-threshold <= 255) |
PF_INT | high-threshold | The high threshold value (0 <= high-threshold <= 255) |
None