Function PlaceGroupTerrain

editor/Group.cpp:438–463

Place the given group at the specified terrain cell The function merely causes the group to be drawn in the editor, allowing the user to line it up before attaching it. The function AttachGroup() must be called to do the actual attachment. Parameters: cellnum - where to place the group g - the group to place

// Parameters:	cellnum - where to place the group
//					g - the group to place
void PlaceGroupTerrain(int cellnum, group *g, bool align_to_terrain) {
  // Clear the placed room, if one exists
  Placed_room = -1;

  // Set globals
  Placed_group = g;
  Placed_room_angle = 0;
  Placed_baseroomp = NULL;

  if (align_to_terrain)
    Placed_room_orient.fvec = TerrainNormals[MAX_TERRAIN_LOD - 1][cellnum].normal1;
  else
    Placed_room_orient.fvec = Identity_matrix.uvec;

  // Compute attach point on terrain
  ComputeTerrainSegmentCenter(&Placed_room_attachpoint, cellnum);

  // Compute attach points on face
  ComputeCenterPointOnFace(&Placed_room_origin, &g->rooms[g->attachroom], g->attachface);

  // Compute initial orientation matrix
  ComputePlacedRoomMatrix();

  // Set the flag
  State_changed = 1;
}

// Attach the already-placed group
void AttachGroup() {