rtcGetGeometryTransformEx(3)                      Embree Ray Tracing Kernels 4

   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:

       o RTC_FORMAT_FLOAT3X4_ROW_MAJOR: The 3x4 float matrix is laid out in
         row-major form.

       o RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR: The 3x4 float matrix is laid out in
         column-major form.

       o RTC_FORMAT_FLOAT4X4_COLUMN_MAJOR: The 3x4 float matrix is laid out in
         column-major form as a 4x4 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]

                                                  rtcGetGeometryTransformEx(3)