ClassesClasses | | Operators

draw_circle_moddraw_circle_modDrawCircleModDrawCircleMod (Operator)

Name

draw_circle_moddraw_circle_modDrawCircleModDrawCircleMod — Interactive drawing of a circle.

Signature

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

Herror draw_circle_mod(const Hlong WindowHandle, double RowIn, double ColumnIn, double RadiusIn, double* Row, double* Column, double* 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)

Description

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

To create a circle are expected the coordinates RowInRowInRowInRowInrowIn and ColumnInColumnInColumnInColumnIncolumnIn of the center of a circle with radius RadiusInRadiusInRadiusInRadiusInradiusIn. After another mouse click in the created circle center you can move it. A clicking close to the circular arc you can modify the RadiusRadiusRadiusRadiusradius of the circle. Pressing the right mousebutton terminates the procedure. On macOS draw_circle_moddraw_circle_modDrawCircleModDrawCircleModDrawCircleMod can also be terminated by pressing the escape key. After terminating the procedure the circle is not visible in the window any longer.

Execution Information

Parameters

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandle (input_control)  window HWindow, HTupleHTupleHtuple (integer) (IntPtr) (Hlong) (Hlong)

Window handle.

RowInRowInRowInRowInrowIn (input_control)  circle.center.y HTupleHTupleHtuple (real) (double) (double) (double)

Row index of the center.

ColumnInColumnInColumnInColumnIncolumnIn (input_control)  circle.center.x HTupleHTupleHtuple (real) (double) (double) (double)

Column index of the center.

RadiusInRadiusInRadiusInRadiusInradiusIn (input_control)  circle.radius HTupleHTupleHtuple (real) (double) (double) (double)

Radius of the circle.

RowRowRowRowrow (output_control)  circle.center.y HTupleHTupleHtuple (real) (double) (double) (double)

Row index of the center.

ColumnColumnColumnColumncolumn (output_control)  circle.center.x HTupleHTupleHtuple (real) (double) (double) (double)

Column index of the center.

RadiusRadiusRadiusRadiusradius (output_control)  circle.radius HTupleHTupleHtuple (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_modDrawCircleModDrawCircleModDrawCircleMod returns 2 (H_MSG_TRUE) if the window is valid and the needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsert) is available. If necessary, an exception is raised.

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowOpenWindow

Possible Successors

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain, disp_regiondisp_regionDispRegionDispRegionDispRegion, set_coloredset_coloredSetColoredSetColoredSetColored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidth, set_drawset_drawSetDrawSetDrawSetDraw, set_insertset_insertSetInsertSetInsertSetInsert

Alternatives

draw_circledraw_circleDrawCircleDrawCircleDrawCircle, draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipse, draw_regiondraw_regionDrawRegionDrawRegionDrawRegion

See also

gen_circlegen_circleGenCircleGenCircleGenCircle, draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1, draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2, draw_polygondraw_polygonDrawPolygonDrawPolygonDrawPolygon, set_insertset_insertSetInsertSetInsertSetInsert

Module

Foundation


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