create_drawing_object_circle_sector🔗
Short description🔗
create_drawing_object_circle_sector — Create a circle sector which can be modified interactively.
Signature🔗
create_drawing_object_circle_sector( coordinates.y Row, coordinates.x Column, number Radius, angle.rad StartAngle, angle.rad EndAngle, out drawing_object DrawID )
Description🔗
create_drawing_object_circle_sector creates a circle sector region which can
be modified interactively in a HALCON window by the user. The circle sector
is defined by the coordinates Row and
Column of the center point, the Radius, and the start and end angle
StartAngle and EndAngle.
These parameters can be queried any time with get_drawing_object_params,
as well as its corresponding HALCON object with get_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_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_window
for further details.
Once attached, the circle is editable by the user through interaction
with the window.
There are three possible transformations for a circle sector object:
resizing, displacement and changing the arc angle.
The Radius of the circle can be modified by dragging the circular arc.
By clicking on the center, the circle sector can be moved across the
HALCON window. The angle arc can be modified by dragging the handles of the
circle sector.
In contrast to the operator draw_circle, this interaction does not block the
calling thread.
Execution information🔗
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🔗
Row (input_control) coordinates.y → (real)
Row coordinate of the center.
Default: 100
Column (input_control) coordinates.x → (real)
Column coordinate of the center.
Default: 100
Radius (input_control) number → (real)
Radius of the circle.
Default: 80
StartAngle (input_control) angle.rad → (real)
Start angle of the arc.
Default: 0
EndAngle (input_control) angle.rad → (real)
End angle of the arc.
Default: 3.14159
DrawID (output_control) drawing_object → (handle)
Handle of the drawing object.
Result🔗
If the parameter values are correct the operator
create_drawing_object_circle_sector returns the value 2 (H_MSG_TRUE).
Otherwise an exception is raised.
Combinations with other operators🔗
Combinations
Possible predecessors
Possible successors
attach_drawing_object_to_window, get_drawing_object_params, get_drawing_object_iconic
Alternatives
draw_rectangle1_mod, draw_rectangle2, draw_region, create_drawing_object_circle, create_drawing_object_ellipse_sector
See also
create_drawing_object_rectangle1, create_drawing_object_rectangle2, create_drawing_object_ellipse, create_drawing_object_circle, create_drawing_object_ellipse_sector, create_drawing_object_xld, create_drawing_object_line
Module🔗
Foundation