- stack<Coordinate> _positionStack; // positions in stack
- stack<Vector> _headingStack; // heading vectors in stack
- stack<Vector> _leftStack; // left vectors in stack
- stack<Vector> _upStack; // up vectors in stack
- stack<double> _diameterStack; // diameters in stack
+ stack<Coordinate> _positionStack; // Positions in stack
+ stack<Vector> _headingStack; // Heading vectors in stack
+ stack<Vector> _leftStack; // Left vectors in stack
+ stack<Vector> _upStack; // Up vectors in stack
+ stack<double> _diameterStack; // Diameters in stack
+ stack<int> _colorIndexStack; // Colors indices in stack