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draw_rectangle1_modDrawRectangle1ModDrawRectangle1Moddraw_rectangle1_modT_draw_rectangle1_modπŸ”—

Short descriptionπŸ”—

draw_rectangle1_modDrawRectangle1ModDrawRectangle1Moddraw_rectangle1_modT_draw_rectangle1_mod β€” Draw a rectangle parallel to the coordinate axis.

SignatureπŸ”—

draw_rectangle1_mod( window WindowHandle, rectangle.origin.y Row1In, rectangle.origin.x Column1In, rectangle.corner.y Row2In, rectangle.corner.x Column2In, out rectangle.origin.y Row1, out rectangle.origin.x Column1, out rectangle.corner.y Row2, out rectangle.corner.x Column2 )void DrawRectangle1Mod( const HTuple& WindowHandle, const HTuple& Row1In, const HTuple& Column1In, const HTuple& Row2In, const HTuple& Column2In, HTuple* Row1, HTuple* Column1, HTuple* Row2, HTuple* Column2 )static void HOperatorSet.DrawRectangle1Mod( HTuple windowHandle, HTuple row1In, HTuple column1In, HTuple row2In, HTuple column2In, out HTuple row1, out HTuple column1, out HTuple row2, out HTuple column2 )def draw_rectangle1_mod( window_handle: HHandle, row_1in: float, column_1in: float, row_2in: float, column_2in: float ) -> Tuple[float, float, float, float]

Herror T_draw_rectangle1_mod( const Htuple WindowHandle, const Htuple Row1In, const Htuple Column1In, const Htuple Row2In, const Htuple Column2In, Htuple* Row1, Htuple* Column1, Htuple* Row2, Htuple* Column2 )

void HWindow::DrawRectangle1Mod( double Row1In, double Column1In, double Row2In, double Column2In, double* Row1, double* Column1, double* Row2, double* Column2 ) const

void HWindow.DrawRectangle1Mod( double row1In, double column1In, double row2In, double column2In, out double row1, out double column1, out double row2, out double column2 )

DescriptionπŸ”—

draw_rectangle1_modDrawRectangle1Mod 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 are expected the parameters Row1Inrow1Inrow_1in, Column1Incolumn1Incolumn_1in,Row2Inrow2Inrow_2in and Column2Incolumn2Incolumn_2in. After a mouse click in the middle of the created rectangle you can move it. A click close to one side β€œgrips” 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.

AttentionπŸ”—

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 informationπŸ”—

Execution information
  • Multithreading type: reentrant (runs in parallel with non-exclusive operators).

  • Multithreading scope: global (may be called from any thread).

  • Processed without parallelization.

ParametersπŸ”—

WindowHandlewindowHandlewindow_handle (input_control) window β†’ (handle)HTuple (HHandle)HWindow, HTuple (IntPtr)HHandleHtuple (handle)

Window handle.

Row1Inrow1Inrow_1in (input_control) rectangle.origin.y β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Row index of the left upper corner.

Column1Incolumn1Incolumn_1in (input_control) rectangle.origin.x β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Column index of the left upper corner.

Row2Inrow2Inrow_2in (input_control) rectangle.corner.y β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Row index of the right lower corner.

Column2Incolumn2Incolumn_2in (input_control) rectangle.corner.x β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Column index of the right lower corner.

Row1row1row_1 (output_control) rectangle.origin.y β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Row index of the left upper corner.

Column1column1column_1 (output_control) rectangle.origin.x β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Column index of the left upper corner.

Row2row2row_2 (output_control) rectangle.corner.y β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Row index of the right lower corner.

Column2column2column_2 (output_control) rectangle.corner.x β†’ (real)HTuple (double)HTuple (double)floatHtuple (double)

Column index of the right lower corner.

ExampleπŸ”—

(HDevelop)

read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1_mod(WindowHandle,100,100,200,300,\
                    Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
(C)
read_image(&Image,"monkey")\;
get_image_size(Image,&Width,&Height)\;
disp_image(Image,WindowHandle)\;
draw_rectangle1_mod(WindowHandle,100,100,200,300,
                    &Row1,&Column1,&Row2,&Column2)\;
set_part(WindowHandle,Row1,Column1,Row2,Column2)\;
disp_image(Image,WindowHandle)\;

ResultπŸ”—

draw_rectangle1_modDrawRectangle1Mod returns 2 (H_MSG_TRUE) if the window is valid. If necessary, an exception is raised.

Combinations with other operatorsπŸ”—

Combinations

Possible predecessors

open_windowOpenWindow

Possible successors

reduce_domainReduceDomain, disp_regionDispRegion, set_coloredSetColored, set_line_widthSetLineWidth, set_drawSetDraw

Alternatives

draw_rectangle1DrawRectangle1, draw_rectangle2DrawRectangle2, draw_regionDrawRegion

See also

gen_rectangle1GenRectangle1, draw_circleDrawCircle, draw_ellipseDrawEllipse

ModuleπŸ”—

Foundation