trimesh.viewer.trackball¶
Trackball class for 3D manipulation of viewpoints.
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class
trimesh.viewer.trackball.
Trackball
(pose, size, scale, target=array([0., 0., 0.]))¶ Bases:
object
A trackball class for creating camera transforms from mouse movements.
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STATE_PAN
= 1¶
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STATE_ROLL
= 2¶
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STATE_ROTATE
= 0¶
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STATE_ZOOM
= 3¶
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down
(point)¶ Record an initial mouse press at a given point.
- Parameters
point ((2,) int) – The x and y pixel coordinates of the mouse press.
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drag
(point)¶ Update the tracball during a drag.
- Parameters
point ((2,) int) – The current x and y pixel coordinates of the mouse during a drag. This will compute a movement for the trackball with the relative motion between this point and the one marked by down().
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property
pose
¶ The current camera-to-world pose.
- Type
autolab_core.RigidTransform
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resize
(size)¶ Resize the window.
- Parameters
size ((float, float)) – The new width and height of the camera image in pixels.
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rotate
(azimuth, axis=None)¶ Rotate the trackball about the “Up” axis by azimuth radians.
- Parameters
azimuth (float) – The number of radians to rotate.
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scroll
(clicks)¶ Zoom using a mouse scroll wheel motion.
- Parameters
clicks (int) – The number of clicks. Positive numbers indicate forward wheel movement.
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set_state
(state)¶ Set the state of the trackball in order to change the effect of dragging motions.
- Parameters
state (int) – One of Trackball.STATE_ROTATE, Trackball.STATE_PAN, Trackball.STATE_ROLL, and Trackball.STATE_ZOOM.
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