Function GetAngle

editor/HRoom.cpp:2447–2461

Gets the angle between two vectors in the range 0..1 Parameters: base - the start of both vectors v0,v1 - the end points of the two vectors normal - the surface normal of the face these verts lie in Returns the cosine of the angle between and

//					normal - the surface normal of the face these verts lie in
// Returns the cosine of the angle between <base,v0> and <base,v1>
float GetAngle(vector *base, vector *v0, vector *v1, vector *normal) {
  vector edge0, edge1, cross;
  float dot;

  vm_GetNormalizedDir(&edge0, v0, base);
  vm_GetNormalizedDir(&edge1, v1, base);

  dot = edge0 * edge1;
  cross = edge0 ^ edge1;

  if (cross * *normal > 0)
    return 0.25 - dot / 4.0;
  else
    return 0.75 + dot / 4.0;
}

// Connects two rooms in a pleasing way
void BuildSmoothBridge(room *rp0, int facenum0, room *rp1, int facenum1) {