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draw_ellipse_moddraw_ellipse_modDrawEllipseModdraw_ellipse_modDrawEllipseModDrawEllipseMod (Operator)

Name

draw_ellipse_moddraw_ellipse_modDrawEllipseModdraw_ellipse_modDrawEllipseModDrawEllipseMod — Interactive drawing of an ellipse.

Signature

draw_ellipse_mod( : : WindowHandle, RowIn, ColumnIn, PhiIn, Radius1In, Radius2In : Row, Column, Phi, Radius1, Radius2)

Herror draw_ellipse_mod(const Hlong WindowHandle, double RowIn, double ColumnIn, double PhiIn, double Radius1In, double Radius2In, double* Row, double* Column, double* Phi, double* Radius1, double* Radius2)

Herror T_draw_ellipse_mod(const Htuple WindowHandle, const Htuple RowIn, const Htuple ColumnIn, const Htuple PhiIn, const Htuple Radius1In, const Htuple Radius2In, Htuple* Row, Htuple* Column, Htuple* Phi, Htuple* Radius1, Htuple* Radius2)

Herror draw_ellipse_mod(const HTuple& WindowHandle, const HTuple& RowIn, const HTuple& ColumnIn, const HTuple& PhiIn, const HTuple& Radius1In, const HTuple& Radius2In, double* Row, double* Column, double* Phi, double* Radius1, double* Radius2)

double HWindow::DrawEllipseMod(const HTuple& RowIn, const HTuple& ColumnIn, const HTuple& PhiIn, const HTuple& Radius1In, const HTuple& Radius2In, HTuple* Column, HTuple* Phi, HTuple* Radius1, HTuple* Radius2) const

void DrawEllipseMod(const HTuple& WindowHandle, const HTuple& RowIn, const HTuple& ColumnIn, const HTuple& PhiIn, const HTuple& Radius1In, const HTuple& Radius2In, HTuple* Row, HTuple* Column, HTuple* Phi, HTuple* Radius1, HTuple* Radius2)

void HWindow::DrawEllipseMod(double RowIn, double ColumnIn, double PhiIn, double Radius1In, double Radius2In, double* Row, double* Column, double* Phi, double* Radius1, double* Radius2) const

void HOperatorSetX.DrawEllipseMod(
[in] VARIANT WindowHandle, [in] VARIANT RowIn, [in] VARIANT ColumnIn, [in] VARIANT PhiIn, [in] VARIANT Radius1In, [in] VARIANT Radius2In, [out] VARIANT* Row, [out] VARIANT* Column, [out] VARIANT* Phi, [out] VARIANT* Radius1, [out] VARIANT* Radius2)

double HWindowX.DrawEllipseMod(
[in] double RowIn, [in] double ColumnIn, [in] double PhiIn, [in] double Radius1In, [in] double Radius2In, [out] double* Column, [out] double* Phi, [out] double* Radius1, [out] double* Radius2)

static void HOperatorSet.DrawEllipseMod(HTuple windowHandle, HTuple rowIn, HTuple columnIn, HTuple phiIn, HTuple radius1In, HTuple radius2In, out HTuple row, out HTuple column, out HTuple phi, out HTuple radius1, out HTuple radius2)

void HWindow.DrawEllipseMod(double rowIn, double columnIn, double phiIn, double radius1In, double radius2In, out double row, out double column, out double phi, out double radius1, out double radius2)

Description

draw_ellipse_moddraw_ellipse_modDrawEllipseModdraw_ellipse_modDrawEllipseModDrawEllipseMod returns the parameter for any orientated ellipse, which has been created interactively by the user in the window.

The created ellipse is described by its center, its two half axes and the angle between the first half axis and the horizontal coordinate axis.

To create an ellipse are expected the parameters RowInRowInRowInRowInRowInrowIn, ColumnInColumnInColumnInColumnInColumnIncolumnIn,PhiInPhiInPhiInPhiInPhiInphiIn,Radius1InRadius1InRadius1InRadius1InRadius1Inradius1In,Radius2InRadius2InRadius2InRadius2InRadius2Inradius2In. Keeping the button pressed determines the length (Radius1Radius1Radius1Radius1Radius1radius1) and the orientation (PhiPhiPhiPhiPhiphi) of the first half axis. In doing so a temporary default length for the second half axis is assumed, which may be modified afterwards on demand. After another mouse click in the center of the created ellipse you can move it. A mouse click close to a vertex “grips” it to modify the length of the appropriate half axis. You may modify the orientation only, if a vertex of the first half axis is gripped.

Pressing the right mouse button terminates the procedure. On macOS draw_ellipse_moddraw_ellipse_modDrawEllipseModdraw_ellipse_modDrawEllipseModDrawEllipseMod can also be terminated by pressing the escape key. After terminating the procedure the ellipse is not visible in the window any longer.

Parallelization

Parameters

WindowHandleWindowHandleWindowHandleWindowHandleWindowHandlewindowHandle (input_control)  window HWindow, HTupleHTupleHTupleHWindowX, VARIANTHtuple (integer) (IntPtr) (Hlong) (Hlong) (Hlong) (Hlong)

Window handle.

RowInRowInRowInRowInRowInrowIn (input_control)  ellipse.center.y HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Row index of the center.

ColumnInColumnInColumnInColumnInColumnIncolumnIn (input_control)  ellipse.center.x HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Column index of the center.

PhiInPhiInPhiInPhiInPhiInphiIn (input_control)  ellipse.angle.rad HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Orientation of the bigger half axis in radians.

Radius1InRadius1InRadius1InRadius1InRadius1Inradius1In (input_control)  ellipse.radius1 HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Bigger half axis.

Radius2InRadius2InRadius2InRadius2InRadius2Inradius2In (input_control)  ellipse.radius2 HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Smaller half axis.

RowRowRowRowRowrow (output_control)  ellipse.center.y HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Row index of the center.

ColumnColumnColumnColumnColumncolumn (output_control)  ellipse.center.x HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Column index of the center.

PhiPhiPhiPhiPhiphi (output_control)  ellipse.angle.rad HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Orientation of the first half axis in radians.

Radius1Radius1Radius1Radius1Radius1radius1 (output_control)  ellipse.radius1 HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

First half axis.

Radius2Radius2Radius2Radius2Radius2radius2 (output_control)  ellipse.radius2 HTupleHTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double) (double)

Second half axis.

Example (HDevelop)

read_image(Image,'monkey')
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,\
                 Row,Column,Phi,Radius1,Radius2)
gen_ellipse(Ellipse,Row,Column,Phi,Radius1,Radius2)
reduce_domain(Image,Ellipse,GrayEllipse)
sobel_amp(GrayEllipse,Sobel,'sum_abs',3)
dev_display(Sobel)

Example (C)

read_image(&Image,"monkey") ;
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,
                 &Row,&Column,&Phi,&Radius1,&Radius2) ;
gen_ellipse(&Ellipse,Row,Column,Phi,Radius1,Radius2) ;
reduce_domain(Image,Ellipse,&GrayEllipse) ;
sobel_amp(GrayEllipse,&Sobel,"sum_abs",3) ;
disp_image(Sobel,WindowHandle) ;

Example (HDevelop)

read_image(Image,'monkey')
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,\
                 Row,Column,Phi,Radius1,Radius2)
gen_ellipse(Ellipse,Row,Column,Phi,Radius1,Radius2)
reduce_domain(Image,Ellipse,GrayEllipse)
sobel_amp(GrayEllipse,Sobel,'sum_abs',3)
dev_display(Sobel)

Example (HDevelop)

read_image(Image,'monkey')
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,\
                 Row,Column,Phi,Radius1,Radius2)
gen_ellipse(Ellipse,Row,Column,Phi,Radius1,Radius2)
reduce_domain(Image,Ellipse,GrayEllipse)
sobel_amp(GrayEllipse,Sobel,'sum_abs',3)
dev_display(Sobel)

Example (HDevelop)

read_image(Image,'monkey')
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,\
                 Row,Column,Phi,Radius1,Radius2)
gen_ellipse(Ellipse,Row,Column,Phi,Radius1,Radius2)
reduce_domain(Image,Ellipse,GrayEllipse)
sobel_amp(GrayEllipse,Sobel,'sum_abs',3)
dev_display(Sobel)

Example (HDevelop)

read_image(Image,'monkey')
draw_ellipse_mod(WindowHandle,RowIn,ColumnIn,PhiIn,Radius1In,Radius2In,\
                 Row,Column,Phi,Radius1,Radius2)
gen_ellipse(Ellipse,Row,Column,Phi,Radius1,Radius2)
reduce_domain(Image,Ellipse,GrayEllipse)
sobel_amp(GrayEllipse,Sobel,'sum_abs',3)
dev_display(Sobel)

Result

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

Possible Predecessors

open_windowopen_windowOpenWindowopen_windowOpenWindowOpenWindow

Possible Successors

reduce_domainreduce_domainReduceDomainreduce_domainReduceDomainReduceDomain, disp_regiondisp_regionDispRegiondisp_regionDispRegionDispRegion, set_coloredset_coloredSetColoredset_coloredSetColoredSetColored, set_line_widthset_line_widthSetLineWidthset_line_widthSetLineWidthSetLineWidth, set_drawset_drawSetDrawset_drawSetDrawSetDraw, set_insertset_insertSetInsertset_insertSetInsertSetInsert

Alternatives

draw_ellipsedraw_ellipseDrawEllipsedraw_ellipseDrawEllipseDrawEllipse, draw_circledraw_circleDrawCircledraw_circleDrawCircleDrawCircle, draw_regiondraw_regionDrawRegiondraw_regionDrawRegionDrawRegion

See also

gen_ellipsegen_ellipseGenEllipsegen_ellipseGenEllipseGenEllipse, draw_rectangle1draw_rectangle1DrawRectangle1draw_rectangle1DrawRectangle1DrawRectangle1, draw_rectangle2draw_rectangle2DrawRectangle2draw_rectangle2DrawRectangle2DrawRectangle2, draw_polygondraw_polygonDrawPolygondraw_polygonDrawPolygonDrawPolygon, set_insertset_insertSetInsertset_insertSetInsertSetInsert

Module

Foundation


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