Pine Tree extension for Minecraft

public class PineTree extends BasicTree {

        public PineTree() {
                super();
                branchSlope = 0.24;
                trunkHeightScale = 0.95;
        }

        float treeShape(int y) {
                // Take the y position relative to the base of the tree.
                // Return the distance the foliage should be from the trunk axis.
                // Return a negative number if foliage should not be created at this height.
                // This method is intended for overriding in child classes, allowing
                // different shaped trees.
                // This method should return a consistent value for each y (don't randomize).
                if (y < (((float) height) * 0.2)) return (float) -1.618;
                float invertedHeight = height - y;
                double distance = (0.36 * invertedHeight);
                // Alter this factor to change the overall width of the tree.
                return (float) distance;
        }

        float foliageShape(int y) {
                // Take the y position relative to the base of the foliage cluster.
                // Return the radius of the cluster at this y
                // Return a negative number if no foliage should be created at this level
                // this method is intended for overriding in child classes, allowing
                // foliage of different sizes and shapes.
                if ((y < 0) || (y >= foliageHeight)) return (float) -1;
                else if (y == 0) return (float) 3;
                else if (y == foliageHeight - 1) return (float) 1;
                else return (float) 2;
        }
}