Function MoveRoomFace

editor/roomkeypaddialog.cpp:812–862

moves a face of a room by a delta amount

// moves a face of a room by a delta amount
void MoveRoomFace(room *rp, int facenum, float dx, float dy, float dz) {
  matrix facematrix;
  vector norm = -rp->faces[facenum].normal;

  int face_list[MAX_FACES_PER_ROOM];
  int portal_list[MAX_VERTS_PER_ROOM];
  int i, t, ok_to_scale, k, touches_portal = 0;
  int num_portal_verts;
  int facecount = 0;
  face *fp = &rp->faces[facenum];

  ASSERT(rp->used > 0);
  ASSERT(facenum >= 0 && facenum < rp->num_faces);

  num_portal_verts = BuildListOfPortalVerts(rp, portal_list);

  vm_VectorToMatrix(&facematrix, &norm, NULL, NULL);

  for (i = 0; i < fp->num_verts; i++) {
    for (ok_to_scale = 1, t = 0; t < num_portal_verts; t++) {
      if (portal_list[t] == fp->face_verts[i]) {
        ok_to_scale = 0;
        touches_portal = 1;
      }
    }

    if (ok_to_scale) {
      rp->verts[fp->face_verts[i]] += (facematrix.rvec * dx);
      rp->verts[fp->face_verts[i]] += (facematrix.uvec * dy);
      rp->verts[fp->face_verts[i]] += (facematrix.fvec * dz);
    }
  }

  // Build a list of faces that share vertices with this edge
  for (i = 0; i < rp->num_faces; i++) {
    if (i == facenum && touches_portal == 0)
      continue;

    for (t = 0; t < rp->faces[i].num_verts; t++) {
      for (k = 0; k < fp->num_verts; k++) {
        if (fp->face_verts[k] == rp->faces[i].face_verts[t]) {
          face_list[facecount] = i;
          facecount++;
        }
      }
    }
  }

  // Now fixup any concave/nonplanar faces
  FixConcaveFaces(rp, face_list, facecount);
}

void CRoomKeypadDialog::OnMarkRoom() { SetMarkedRoom(); }