draw_rectangle1T_draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 (Operator)
Name
draw_rectangle1T_draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 — Draw a rectangle parallel to the coordinate axis.
Signature
def draw_rectangle1(window_handle: HHandle) -> Tuple[float, float, float, float]
Description
draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 returns the parameter for a rectangle parallel
to the coordinate axes, which has been created interactively by the user
in the window.
To create a rectangle you have to press the left mouse button determining a corner
of the rectangle. While keeping the button pressed you may “drag” the rectangle in
any direction. After another mouse click in the middle of the created rectangle
you can move it.
A click close to one side “grips” it to modify the rectangle's dimension in perpendicular
direction to this side. If you click on one corner of the created rectangle, you may
move this corner.
Pressing the right mouse button terminates the procedure.
After terminating the procedure the rectangle is not visible in the window any longer.
Attention
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.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
Row1Row1Row1row1row_1 (output_control) rectangle.origin.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the left upper corner.
Column1Column1Column1column1column_1 (output_control) rectangle.origin.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the left upper corner.
Row2Row2Row2row2row_2 (output_control) rectangle.corner.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the right lower corner.
Column2Column2Column2column2column_2 (output_control) rectangle.corner.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the right lower corner.
Example (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
Example (C)
read_image(&Image,"monkey");
get_image_size(Image,&Width,&Height);
disp_image(Image,WindowHandle);
draw_rectangle1(WindowHandle,&Row1,&Column1,&Row2,&Column2);
set_part(WindowHandle,Row1,Column1,Row2,Column2);
disp_image(Image,WindowHandle);
Example (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
Example (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
Result
draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 returns 2 (
H_MSG_TRUE)
, if the window is valid and the
needed drawing mode (see set_insertset_insertSetInsertSetInsertset_insert) is available.
If necessary, an exception is raised.
Possible Predecessors
open_windowopen_windowOpenWindowOpenWindowopen_window
Possible Successors
reduce_domainreduce_domainReduceDomainReduceDomainreduce_domain,
disp_regiondisp_regionDispRegionDispRegiondisp_region,
set_coloredset_coloredSetColoredSetColoredset_colored,
set_line_widthset_line_widthSetLineWidthSetLineWidthset_line_width,
set_drawset_drawSetDrawSetDrawset_draw,
set_insertset_insertSetInsertSetInsertset_insert
Alternatives
draw_rectangle1_moddraw_rectangle1_modDrawRectangle1ModDrawRectangle1Moddraw_rectangle1_mod,
draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2draw_rectangle2,
draw_regiondraw_regionDrawRegionDrawRegiondraw_region
See also
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1gen_rectangle1,
draw_circledraw_circleDrawCircleDrawCircledraw_circle,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipsedraw_ellipse,
set_insertset_insertSetInsertSetInsertset_insert
Module
Foundation