- glVertex3f(x, y, surface.at(x, y).getHeight());
- glVertex3f(x+1, y, surface.at(x+1, y).getHeight());
- glVertex3f(x+1, y+1, surface.at(x+1, y+1).getHeight());
+ glVertex3f(x, y, surface->at(x, y).getHeight());
+ glVertex3f(x+1, y, surface->at(x+1, y).getHeight());
+ glVertex3f(x+1, y+1, surface->at(x+1, y+1).getHeight());