Manpages - rtcGetGeometryTransform.3embree3

  rtcGetGeometryTransform - returns the interpolated instance
    transformation for the specified time

  #include <embree3/rtcore.h>

  void rtcGetGeometryTransform(
    RTCGeometry geometry,
    float time,
    enum RTCFormat format,
    void* xfm
  );

The rtcGetGeometryTransform function returns the interpolated local to world transformation (xfm parameter) of an instance geometry (geometry parameter) for a particular time (time parameter in range [0, 1]) in the specified format (format parameter).

Possible formats for the returned matrix are:

• RTC_FORMAT_FLOAT3X4_ROW_MAJOR: The 3×4 float matrix is laid out in row-major form.
• RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR: The 3×4 float matrix is laid out in column-major form.
• RTC_FORMAT_FLOAT4X4_COLUMN_MAJOR: The 3×4 float matrix is laid out in column-major form as a 4×4 homogeneous matrix with last row equal to (0, 0, 0, 1).

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

[RTC_GEOMETRY_TYPE_INSTANCE], [rtcSetGeometryTransform]