Categories
• Geometry Queries
Description
Calculates the collision location and time between a moving point and a moving and deforming geometry. Locations are “glued” to the surface of a geometry so that they stay in the same relative position even as the geometry transforms and deforms, unless you recompute and reset the locations’ values at different frames. Currently collisions with NURBS surfaces will not take deformation into account, only animation of the transform.
This node only works with obstacles made of polygon meshes or NURBS surfaces. Curves and Point Clouds return no collisions.
Parameters
|
Method |
How to calculate the collision. • Deformed Collision (Continuous) • Static Collision |
Ports
Inputs
|
Obstacle |
The geometry to on which to test the collision. |
|
Start Position |
The position of the point on which we test collisions at the input frame fraction. |
|
Movement |
The translation vector of the point until the end of the frame. |
|
Frame Fraction |
Where we are in the frame expressed as a fraction. |
|
Current Collision |
Location of the previous inter-frame collision. This is optional but helps making collisions more robust. This is typically the previous output of the Basic Collide node. |
|
Current Collision Is Outside |
The point inside or outside the geometry at the start of the motion. |
Outputs
|
Location |
Location where the point hits the geometry. An undefined location is returned if nothing was hit. |
|
Hit |
Outputs true if the point hits the geometry. |
|
Hit Frame Fraction |
The fraction of the frame at which time the point hit the geometry. |
|
Is Outside |
Whether the point is outside the geometry at collision time. |
Autodesk Softimage v.7.5