Function updateEdgeLevel

tutorials/interpolation/interpolation_device.cpp:120–129

};

inline float updateEdgeLevel(const Vec3fa& cam_pos, Vec3fa* vtx, unsigned int* indices, const unsigned int e0, const unsigned int e1)
{
  const Vec3fa v0 = vtx[indices[e0]];
  const Vec3fa v1 = vtx[indices[e1]];
  const Vec3fa edge = v1-v0;
  const Vec3fa P = 0.5f*(v1+v0);
  const Vec3fa dist = Vec3fa(cam_pos) - P;
  const float level = max(min(LEVEL_FACTOR*(0.5f*length(edge)/length(dist)),MAX_EDGE_LEVEL),MIN_EDGE_LEVEL);
  return level;
}

/* adds a subdiv cube to the scene */
unsigned int addTriangleSubdivCube (RTCScene scene_i, const Vec3fa& pos)