create_drawing_object_ellipseT_create_drawing_object_ellipseCreateDrawingObjectEllipseCreateDrawingObjectEllipsecreate_drawing_object_ellipse (Operator)
Name
create_drawing_object_ellipseT_create_drawing_object_ellipseCreateDrawingObjectEllipseCreateDrawingObjectEllipsecreate_drawing_object_ellipse — Create an ellipse which can be modified interactively.
Signature
Description
create_drawing_object_ellipsecreate_drawing_object_ellipseCreateDrawingObjectEllipseCreateDrawingObjectEllipseCreateDrawingObjectEllipsecreate_drawing_object_ellipse creates an ellipse which can be
modified interactively in a HALCON window by the user. The ellipse is defined
by the coordinates of its center point, RowRowRowRowrowrow and ColumnColumnColumnColumncolumncolumn,
the lengths of its respective half axis, Radius1Radius1Radius1Radius1radius1radius_1 and
Radius2Radius2Radius2Radius2radius2radius_2, and its orientation PhiPhiPhiPhiphiphi.
The parameters can be queried with get_drawing_object_paramsget_drawing_object_paramsGetDrawingObjectParamsGetDrawingObjectParamsGetDrawingObjectParamsget_drawing_object_params,
as well as its corresponding HALCON object with get_drawing_object_iconicget_drawing_object_iconicGetDrawingObjectIconicGetDrawingObjectIconicGetDrawingObjectIconicget_drawing_object_iconic.
In addition to those parameters, every drawing object has a number of
parameters which determine the appearance of the object in the HALCON window.
See set_drawing_object_paramsset_drawing_object_paramsSetDrawingObjectParamsSetDrawingObjectParamsSetDrawingObjectParamsset_drawing_object_params for details on the number and meaning
of those parameters.
In order to enable the interactive modification with the drawing object, the
object must be attached to an existing window. See
attach_drawing_object_to_windowattach_drawing_object_to_windowAttachDrawingObjectToWindowAttachDrawingObjectToWindowAttachDrawingObjectToWindowattach_drawing_object_to_window for further details.
Once attached, the ellipse is editable by the user through interaction
with the window.
There are three possible transformations for an ellipse object:
resizing, displacement and rotation.
The ellipse can be resized by clicking close to the vertex handles.
The orientation and thus the rotation of the ellipse can be modified by
dragging on a vertex of the first half axis. The ellipse can be moved in
the HALCON window by dragging the center.
In contrast to the operator draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse, this interaction does not
block the calling thread.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
This operator returns a handle. Note that the state of an instance of this handle type may be changed by specific operators even though the handle is used as an input parameter by those operators.
Parameters
RowRowRowRowrowrow (input_control) ellipse.center.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the center.
Default value: 200
ColumnColumnColumnColumncolumncolumn (input_control) ellipse.center.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the center.
Default value: 200
PhiPhiPhiPhiphiphi (input_control) ellipse.angle.rad → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Orientation of the first half axis in radians.
Default value: 0
Radius1Radius1Radius1Radius1radius1radius_1 (input_control) ellipse.radius1 → HTuplefloatHTupleHtuple (real) (double) (double) (double)
First half axis.
Default value: 100
Radius2Radius2Radius2Radius2radius2radius_2 (input_control) ellipse.radius2 → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Second half axis.
Default value: 60
DrawIDDrawIDDrawIDDrawIDdrawIDdraw_id (output_control) drawing_object → HDrawingObject, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handle of the drawing object.
Result
If the parameter values are correct the operator
create_drawing_object_ellipsecreate_drawing_object_ellipseCreateDrawingObjectEllipseCreateDrawingObjectEllipseCreateDrawingObjectEllipsecreate_drawing_object_ellipse returns the value 2 (H_MSG_TRUE).
Otherwise an exception is raised.
Possible Predecessors
open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window
Possible Successors
disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region,
set_coloredset_coloredSetColoredSetColoredSetColoredset_colored,
set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width,
set_drawset_drawSetDrawSetDrawSetDrawset_draw,
set_insertset_insertSetInsertSetInsertSetInsertset_insert,
attach_drawing_object_to_windowattach_drawing_object_to_windowAttachDrawingObjectToWindowAttachDrawingObjectToWindowAttachDrawingObjectToWindowattach_drawing_object_to_window
Alternatives
draw_ellipse_moddraw_ellipse_modDrawEllipseModDrawEllipseModDrawEllipseModdraw_ellipse_mod,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse,
draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region
See also
gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipsegen_ellipse,
draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle,
draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
Module
Foundation