Manpages - rtcSetGeometryTimeStepCount.3embree3

  rtcSetGeometryTimeStepCount - sets the number of time steps of the
    geometry

  #include <embree3/rtcore.h>

  void rtcSetGeometryTimeStepCount(
    RTCGeometry geometry,
    unsigned int timeStepCount
  );

The rtcSetGeometryTimeStepCount function sets the number of time steps for multi-segment motion blur (timeStepCount parameter) of the specified geometry (geometry parameter).

For triangle meshes (RTC_GEOMETRY_TYPE_TRIANGLE), quad meshes (RTC_GEOMETRY_TYPE_QUAD), curves (RTC_GEOMETRY_TYPE_CURVE), points (RTC_GEOMETRY_TYPE_POINT), and subdivision geometries (RTC_GEOMETRY_TYPE_SUBDIVISION), the number of time steps directly corresponds to the number of vertex buffer slots available (RTC_BUFFER_TYPE_VERTEX buffer type). For these geometries, one vertex buffer per time step must be specified when creating multi-segment motion blur geometries.

For instance geometries (RTC_GEOMETRY_TYPE_INSTANCE), a transformation must be specified for each time step (see rtcSetGeometryTransform).

For user geometries, the registered bounding callback function must provide a bounding box per primitive and time step, and the intersection and occlusion callback functions should properly intersect the motion-blurred geometry at the ray time.

On failure an error code is set that can be queried using rtcGetDeviceError.

[rtcNewGeometry], [rtcSetGeometryTimeRange]