draw_circle_modT_draw_circle_modDrawCircleModDrawCircleModdraw_circle_mod (Operator)

Name

draw_circle_modT_draw_circle_modDrawCircleModDrawCircleModdraw_circle_mod — Interactive drawing of a circle.

Signature

draw_circle_mod( : : WindowHandle, RowIn, ColumnIn, RadiusIn : Row, Column, Radius)

Herror T_draw_circle_mod(const Htuple WindowHandle, const Htuple RowIn, const Htuple ColumnIn, const Htuple RadiusIn, Htuple* Row, Htuple* Column, Htuple* Radius)

void DrawCircleMod(const HTuple& WindowHandle, const HTuple& RowIn, const HTuple& ColumnIn, const HTuple& RadiusIn, HTuple* Row, HTuple* Column, HTuple* Radius)

void HWindow::DrawCircleMod(double RowIn, double ColumnIn, double RadiusIn, double* Row, double* Column, double* Radius) const

static void HOperatorSet.DrawCircleMod(HTuple windowHandle, HTuple rowIn, HTuple columnIn, HTuple radiusIn, out HTuple row, out HTuple column, out HTuple radius)

void HWindow.DrawCircleMod(double rowIn, double columnIn, double radiusIn, out double row, out double column, out double radius)

def draw_circle_mod(window_handle: HHandle, row_in: float, column_in: float, radius_in: float) -> Tuple[float, float, float]

Description

draw_circle_moddraw_circle_modDrawCircleModDrawCircleModDrawCircleModdraw_circle_mod produces the parameter for a circle created interactive by the user in the window.

To create a circle are expected the coordinates RowInRowInRowInRowInrowInrow_in and ColumnInColumnInColumnInColumnIncolumnIncolumn_in of the center of a circle with radius RadiusInRadiusInRadiusInRadiusInradiusInradius_in. After another mouse click in the created circle center you can move it. A clicking close to the circular arc you can modify the RadiusRadiusRadiusRadiusradiusradius of the circle. Pressing the right mouse button terminates the procedure. On macOS draw_circle_moddraw_circle_modDrawCircleModDrawCircleModDrawCircleModdraw_circle_mod can also be terminated by pressing the escape key. After terminating the procedure the circle 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

Parameters

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control)  window HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Window handle.

RowInRowInRowInRowInrowInrow_in (input_control)  circle.center.y HTuplefloatHTupleHtuple (real) (double) (double) (double)

Row index of the center.

ColumnInColumnInColumnInColumnIncolumnIncolumn_in (input_control)  circle.center.x HTuplefloatHTupleHtuple (real) (double) (double) (double)

Column index of the center.

RadiusInRadiusInRadiusInRadiusInradiusInradius_in (input_control)  circle.radius HTuplefloatHTupleHtuple (real) (double) (double) (double)

Radius of the circle.

RowRowRowRowrowrow (output_control)  circle.center.y HTuplefloatHTupleHtuple (real) (double) (double) (double)

Row index of the center.

ColumnColumnColumnColumncolumncolumn (output_control)  circle.center.x HTuplefloatHTupleHtuple (real) (double) (double) (double)

Column index of the center.

RadiusRadiusRadiusRadiusradiusradius (output_control)  circle.radius HTuplefloatHTupleHtuple (real) (double) (double) (double)

Circle's radius.

Example (HDevelop)

read_image(Image,'monkey')
draw_circle_mod(WindowHandle,20,20,15,Row,Column,Radius)
gen_circle(Circle,Row,Column,Radius)
reduce_domain(Image,Circle,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

Example (C)

read_image(&Image,"monkey");
draw_circle_mod(WindowHandle,20,20,15,&Row,&Column,&Radius);
gen_circle(&Circle,Row,Column,Radius);
reduce_domain(Image,Circle,&GrayCircle);
disp_image(GrayCircle,WindowHandle);

Example (HDevelop)

read_image(Image,'monkey')
draw_circle_mod(WindowHandle,20,20,15,Row,Column,Radius)
gen_circle(Circle,Row,Column,Radius)
reduce_domain(Image,Circle,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

Example (HDevelop)

read_image(Image,'monkey')
draw_circle_mod(WindowHandle,20,20,15,Row,Column,Radius)
gen_circle(Circle,Row,Column,Radius)
reduce_domain(Image,Circle,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

Example (HDevelop)

read_image(Image,'monkey')
draw_circle_mod(WindowHandle,20,20,15,Row,Column,Radius)
gen_circle(Circle,Row,Column,Radius)
reduce_domain(Image,Circle,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

Result

draw_circle_moddraw_circle_modDrawCircleModDrawCircleModDrawCircleModdraw_circle_mod returns 2 (H_MSG_TRUE) if the window is valid and the needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsertset_insert) is available. If necessary, an exception is raised.

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

Possible Successors

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region, set_coloredset_coloredSetColoredSetColoredSetColoredset_colored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width, set_drawset_drawSetDrawSetDrawSetDrawset_draw, set_insertset_insertSetInsertSetInsertSetInsertset_insert

Alternatives

draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle, draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse, draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region

See also

gen_circlegen_circleGenCircleGenCircleGenCirclegen_circle, draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1draw_rectangle1, draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2, draw_polygondraw_polygonDrawPolygonDrawPolygonDrawPolygondraw_polygon, set_insertset_insertSetInsertSetInsertSetInsertset_insert

Module

Foundation