HALCON Reference Manual 10.0.2
Name
draw_ellipsedraw_ellipsedraw_ellipseDrawEllipseDrawEllipse — Interactive drawing of an ellipse.
Herror draw_ellipse(const Hlong WindowHandle, double* Row, double* Column, double* Phi, double* Radius1, double* Radius2)
Herror T_draw_ellipse(const Htuple WindowHandle, Htuple* Row, Htuple* Column, Htuple* Phi, Htuple* Radius1, Htuple* Radius2)
draw_ellipsedraw_ellipsedraw_ellipseDrawEllipseDrawEllipse 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 you have to determine the center of the ellipse with the
left mouse button. Keeping the button pressed determines the length (Radius1Radius1Radius1Radius1radius1)
and the orientation (PhiPhiPhiPhiphi) 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.
After terminating the procedure the ellipse is not visible in the window any longer.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: local (may only be called from the same thread in which the window, model, or tool instance was created).
- Processed without parallelization.
RowRowRowRowrow (output_control) ellipse.center.y → HTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double)
Row index of the center.
Column index of the center.
PhiPhiPhiPhiphi (output_control) ellipse.angle.rad → HTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double)
Orientation of the first half axis in radians.
read_image(Image,'monkey')
draw_ellipse(WindowHandle,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)
read_image(&Image,"monkey") ;
draw_ellipse(WindowHandle,&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) ;
read_image(Image,'monkey')
draw_ellipse(WindowHandle,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)
read_image(Image,'monkey')
draw_ellipse(WindowHandle,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)
read_image(Image,'monkey')
draw_ellipse(WindowHandle,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)
draw_ellipsedraw_ellipsedraw_ellipseDrawEllipseDrawEllipse returns 2 (H_MSG_TRUE), if the window is valid and the
needed drawing mode (see set_insertset_insertset_insertSetInsertSetInsert) is available.
If necessary, an exception is raised.
open_windowopen_windowopen_windowOpenWindowOpenWindow
reduce_domainreduce_domainreduce_domainReduceDomainReduceDomain,
disp_regiondisp_regiondisp_regionDispRegionDispRegion,
set_coloredset_coloredset_coloredSetColoredSetColored,
set_line_widthset_line_widthset_line_widthSetLineWidthSetLineWidth,
set_drawset_drawset_drawSetDrawSetDraw,
set_insertset_insertset_insertSetInsertSetInsert
draw_ellipse_moddraw_ellipse_moddraw_ellipse_modDrawEllipseModDrawEllipseMod,
draw_circledraw_circledraw_circleDrawCircleDrawCircle,
draw_regiondraw_regiondraw_regionDrawRegionDrawRegion
gen_ellipsegen_ellipsegen_ellipseGenEllipseGenEllipse,
draw_rectangle1draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1,
draw_rectangle2draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2,
draw_polygondraw_polygondraw_polygonDrawPolygonDrawPolygon,
set_insertset_insertset_insertSetInsertSetInsert
Foundation
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