rtcGetGeometryTransformEx(3)

  NAME

    rtcGetGeometryTransformEx - returns the interpolated instance
    transformation for an instance of an instance array geometry for the
    specified time.

  SYNOPSIS

    #include <embree4/rtcore.h>

    void rtcGetGeometryTransformEx(
      RTCGeometry geometry,
      unsigned int instPrimID,
      float time,
      enum RTCFormat format,
      void* xfm
    );

  DESCRIPTION

The rtcGetGeometryTransformEx function returns the interpolated local to world transformation (xfm parameter) of the instPrimID-th instance of an instance array geometry (geometry parameter) for a particular time (time parameter in range [0,1]) in the specified format (format parameter). The function can also be used when geometry refers to a regular instance, but then the instPrimID has to be 0.

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).

  EXIT STATUS

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

  SEE ALSO

[RTC_GEOMETRY_TYPE_INSTANCE_ARRAY]