rtcGetGeometryTransform(3)

  NAME

    rtcGetGeometryTransform - returns the interpolated instance
      transformation for the specified time

  SYNOPSIS

    #include <embree4/rtcore.h>

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

  DESCRIPTION

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).

This function is supposed to be used during rendering, but only supported on the CPU and not inside SYCL kernels on the GPU. Inside a SYCL kernel the rtcGetGeometryTransformFromScene function has to get used.

  EXIT STATUS

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

  SEE ALSO

[RTC_GEOMETRY_TYPE_INSTANCE], [rtcSetGeometryTransform], [rtcGetGeometryTransformFromScene]