Function CopyFace

editor/Erooms.cpp:1173–1191

Copies the contents of one face to another. Sets the portal num in the new face to -1. Parameters: dfp - pointer to the destination face. This face should be uninitialized. sfp - pointer to the source face

// Parameters:	dfp - pointer to the destination face.  This face should be uninitialized.
//					sfp - pointer to the source face
void CopyFace(face *dfp, face *sfp) {
  InitRoomFace(dfp, sfp->num_verts);

  dfp->flags = sfp->flags;
  dfp->portal_num = -1;
  dfp->normal = sfp->normal;
  dfp->tmap = sfp->tmap;
  dfp->light_multiple = sfp->light_multiple;

  // Clear the flags that we don't want transferred over
  dfp->flags &= ~FF_LIGHTMAP;
  dfp->flags &= ~FF_HAS_TRIGGER;

  // Copy vertices and uvls
  for (int i = 0; i < sfp->num_verts; i++) {
    dfp->face_verts[i] = sfp->face_verts[i];
    dfp->face_uvls[i] = sfp->face_uvls[i];
  }
}

// Checks to see if a face is planar.
// See if all the points are within a certain distance of an average point