| Operators |
draw_xld_mod — Interactive modification of a contour.
draw_xld_mod returns a contour, which has been interactively modified by the user in the window.
You can modify the contour in two ways: by editing the contour itself, e.g., by inserting or moving contour points, or by transforming the contour as a whole, e.g., by rotating moving or scaling it. Note that you can only edit a contour if Edit is set to 'true'. Similarly, you can only rotate, move or scale it if Rotate, Move, and Scale, respectively, are set to 'true'.
draw_xld_mod starts in the transformation mode. In this mode, the contour is displayed together with 3 symbols: a cross in the middle and an arrow to the right if Rotate is set to 'true', and a double-headed arrow to the upper right if Scale is set to 'true'. To switch into the edit mode, press the Shift key; by pressing it again, you can switch back into the transformation mode.
Transformation Mode
To move the contour, click with the left mouse button on the cross in the center and then drag it to the new position´, i.e., keep the mouse button pressed while moving the mouse.
To rotate it, click with the left mouse button on the arrow and then drag it, till the contour has the right direction.
Scaling is achieved by dragging the double arrow. To keep the ratio the parameter KeepRatio has to be set to 'true'.
Edit Mode In this mode, the contour is display together with 5 pick points, which are located in the middle and at the corners of the surrounding rectangle. If the contour is closed, the pick points are displayed as squares, otherwise shaped like a 'u'. By clicking on a pick point, you can close an open contour and vice versa. Depending on the state of the contour, you can perform different modifications. Open contours (pick points shaped like a 'u')
To append points, click with the left mouse button in the window and a new point is added at this position.
You can delete the point appended last by pressing the Ctrl key.
To move or insert points, you must first close the contour by clicking on one of the pick points.
Closed contours (square pick points)
To move a point, click with the left mouse button on a point marked by a rectangle and then drag it to the new position.
To insert a point, click with the left mouse button in the vicinity of a line and then move the mouse to the position where you want the new point to be placed.
To delete a point, select the point which should be deleted with the left mouse button and then press the Ctrl key.
Pressing the right mouse button terminates the procedure. On macOS draw_xld_mod can also be terminated by pressing the escape key.
If used in a buffer window, mouse events have to be supplied by the application, while the draw operator must be run in another thread.
Input contour.
Modified contour.
Window handle.
Enable rotation?
Default value: 'true'
List of values: 'false', 'true'
Enable moving?
Default value: 'true'
List of values: 'false', 'true'
Enable scaling?
Default value: 'true'
List of values: 'false', 'true'
Keep ratio while scaling?
Default value: 'true'
List of values: 'false', 'true'
Enable editing?
Default value: 'true'
List of values: 'false', 'true'
draw_xld_mod returns 2 (H_MSG_TRUE), if the window is valid and the needed drawing mode (see set_insert) is available. If necessary, an exception is raised.
reduce_domain, disp_region, set_colored, set_line_width, set_draw, set_insert
draw_rectangle2, draw_rectangle1, draw_rectangle2, draw_region
gen_rectangle2, draw_circle, draw_ellipse, set_insert
Foundation
| Operators |