Interactive movement of a region with fixpoint specification.
You use drag_region2 to move a region on the display by mouse. It corresponds to the procedure drag_region1 with the difference, that the position of the mouse cursor can be determined.
Gray values of the regions are not moved. With moving the input region it is not sure whether the gray values of the output regions are filled reasonable. This may occur if the gray values of the input regions do not comprise the whole image.
|
SourceRegion (input_object) |
region-array -> object |
| Regions to move. | |
|
DestinationRegion (output_object) |
region-array -> object |
| Moved regions. | |
|
WindowHandle (input_control) |
window -> integer |
| Window_id. | |
|
Row (input_control) |
point.y -> integer |
| Row index of the reference point. | |
| Default value: 100 | |
| Suggested values: 0, 64, 128, 256, 512 | |
| Typical range of values: 0 <= Row <= 1024 | |
|
Column (input_control) |
point.x -> integer |
| Column index of the reference point. | |
| Default value: 100 | |
| Suggested values: 0, 64, 128, 256, 512 | |
| Typical range of values: 0 <= Column <= 1024 | |
drag_region2 returns 2 (H_MSG_TRUE), if a region is entered, the window is valid and the needed drawing mode (see set_insert) is available. If necessary, an exception handling is raised. You may determine the behavior after an empty input with set_system(::'no_object_result',<Result>:).
drag_region2 is reentrant, local, and processed without parallelization.
reduce_domain, disp_region, set_colored, set_line_width, set_draw, set_insert, affine_trans_image
get_mposition, move_region, drag_region1, drag_region3
set_insert, set_draw, affine_trans_image
System
