The spline actor can be used to create both curves and straight lines. Line color can be set for the entire line, and line width can be set on a per-control point basis. Splines are created by first spawning a spline actor and then adding control points. Depending on the configuration used when spawned, you can get variations on the curve shape or straight lines.
See the :ref:`splineTutorial` to get a better understanding of using splines in Quanser Interactive Labs.
.. autoclass:: qvl.spline_line.QLabsSplineLine
.. autoattribute:: qvl.spline_line.QLabsSplineLine.ID_SPLINE_LINE
.. autoattribute:: qvl.spline_line.QLabsSplineLine.LINEAR
.. autoattribute:: qvl.spline_line.QLabsSplineLine.CURVE
.. autoattribute:: qvl.spline_line.QLabsSplineLine.CONSTANT
.. autoattribute:: qvl.spline_line.QLabsSplineLine.CLAMPED_CURVE
.. autoattribute:: qvl.spline_line.QLabsSplineLine.actorNumber
.. automethod:: qvl.spline_line.QLabsSplineLine.__init__
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn_id
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn_id_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn_id_and_parent_with_relative_transform
.. automethod:: qvl.spline_line.QLabsSplineLine.spawn_id_and_parent_with_relative_transform_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.destroy
.. automethod:: qvl.spline_line.QLabsSplineLine.destroy_all_actors_of_class
.. automethod:: qvl.spline_line.QLabsSplineLine.ping
.. automethod:: qvl.spline_line.QLabsSplineLine.get_world_transform
.. automethod:: qvl.spline_line.QLabsSplineLine.get_world_transform_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.set_points
.. automethod:: qvl.spline_line.QLabsSplineLine.circle_from_center
.. automethod:: qvl.spline_line.QLabsSplineLine.arc_from_center
.. automethod:: qvl.spline_line.QLabsSplineLine.arc_from_center_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.rounded_rectangle_from_center
.. automethod:: qvl.spline_line.QLabsSplineLine.parent_with_relative_transform
.. automethod:: qvl.spline_line.QLabsSplineLine.parent_with_relative_transform_degrees
.. automethod:: qvl.spline_line.QLabsSplineLine.parent_with_current_world_transform
.. automethod:: qvl.spline_line.QLabsSplineLine.parent_break
Configurations 0 to 3 are shown from top to bottom in the above image using the same set of control points.
| Configuration | Mode | Description |
|---|---|---|
| 0 | Linear | The tangent of the curve at each control point is set to match the tangent of the start of each line segment. |
| 1 | Curve | The tangent of the curve at each control point is an average of the two adjacent line segments and matched to the start and end tangents. |
| 2 | Constant | Straight line segments |
| 3 | Clamped Curve | As angles become more acute, the curve will transition from a smooth change to a sharp point. |
There are no connection points for this actor class.
.. dropdown:: Example
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