private void buildGraph(){
p_graphVoronoi = new GraphVoronoi(voronoiPoints, heightMapSize);
p_graphVoronoi.pointGenerator = new RandomPointGenerator ();
p_graphVoronoi.terrainSize = p_terrainSize;
p_graphVoronoi.terrainHeight = terrainHeight;
p_graphVoronoi.waterLimit = waterLevel;
p_graphVoronoi.createVoronoi ();
p_graphVoronoi.assignCornerElevations (p_terrain);
p_graphVoronoi.buildGraph ();
p_graphVoronoi.fillNearestCenters ();
}
