User`s guide

VR Tracer
9-31
VR Tracer
Trace trajectory of object in associated virtual scene
Library
Simulink 3D Animation
Description
Trace the trajectory of an object in the associated virtual scene.
This block creates marker nodes in regular time steps either as children of the specified
parent node (Parent node parameter), or at the top level of scene hierarchy (root).
You can specify one of three types of markers:
• General shape
• Line segments connecting object positions in every time step
• Axis-aligned triads for orienting the trajectory in the 3–D space
Also, you can project traced object positions to a plane or to a point.
Object position input must correspond to the placement of the object in the scene
hierarchy. If the traced object resides as a child of a parent object, define the parent
object DEF name in the parent node field. If the traced object resides at the top of the
scene hierarchy (its position is defined in global scene coordinates), leave this field
empty.
The first block input vector determines the position of the marker. The second block
input (if enabled by the Marker color selection parameter) represents the marker
color. The second or third block input vector (depending on whether the marker color
input vector is enabled) specifies the project point coordinates.