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.TH "rtcGetGeometryTransform" "3" "" "" "Embree Ray Tracing Kernels 3"
.hy
.SS NAME
.IP
.nf
\f[C]
rtcGetGeometryTransform \- returns the interpolated instance
  transformation for the specified time
\f[R]
.fi
.SS SYNOPSIS
.IP
.nf
\f[C]
#include <embree3/rtcore.h>

void rtcGetGeometryTransform(
  RTCGeometry geometry,
  float time,
  enum RTCFormat format,
  void* xfm
);
\f[R]
.fi
.SS DESCRIPTION
.PP
The \f[C]rtcGetGeometryTransform\f[R] function returns the interpolated
local to world transformation (\f[C]xfm\f[R] parameter) of an instance
geometry (\f[C]geometry\f[R] parameter) for a particular time
(\f[C]time\f[R] parameter in range [0,\[u2006]1]) in the specified
format (\f[C]format\f[R] parameter).
.PP
Possible formats for the returned matrix are:
.IP \[bu] 2
\f[C]RTC_FORMAT_FLOAT3X4_ROW_MAJOR\f[R]: The 3\[tmu]4 float matrix is
laid out in row\-major form.
.IP \[bu] 2
\f[C]RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR\f[R]: The 3\[tmu]4 float matrix is
laid out in column\-major form.
.IP \[bu] 2
\f[C]RTC_FORMAT_FLOAT4X4_COLUMN_MAJOR\f[R]: The 3\[tmu]4 float matrix is
laid out in column\-major form as a 4\[tmu]4 homogeneous matrix with
last row equal to (0, 0, 0, 1).
.SS EXIT STATUS
.PP
On failure an error code is set that can be queried using
\f[C]rtcGetDeviceError\f[R].
.SS SEE ALSO
.PP
[RTC_GEOMETRY_TYPE_INSTANCE], [rtcSetGeometryTransform]