Spine.SkeletonBounds.ContainsPoint C# (CSharp) Method

		public bool ContainsPoint (Polygon polygon, float x, float y) {
			float[] vertices = polygon.Vertices;
			int nn = polygon.Count;

			int prevIndex = nn - 2;
			bool inside = false;
			for (int ii = 0; ii < nn; ii += 2) {
				float vertexY = vertices[ii + 1];
				float prevY = vertices[prevIndex + 1];
				if ((vertexY < y && prevY >= y) || (prevY < y && vertexY >= y)) {
					float vertexX = vertices[ii];
					if (vertexX + (y - vertexY) / (prevY - vertexY) * (vertices[prevIndex] - vertexX) < x) inside = !inside;
				}
				prevIndex = ii;
			}
			return inside;
		}

        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.Black);

            state.Update(gameTime.ElapsedGameTime.Milliseconds / 1000f);
            state.Apply(skeleton);
            skeleton.UpdateWorldTransform();
            skeletonRenderer.Begin();
            skeletonRenderer.Draw(skeleton);
            skeletonRenderer.End();

            bounds.Update(skeleton, true);
            MouseState mouse = Mouse.GetState();

            if (headSlot != null)
            {
                headSlot.G = 1;
                headSlot.B = 1;
                if (bounds.AabbContainsPoint(mouse.X, mouse.Y))
                {
                    BoundingBoxAttachment hit = bounds.ContainsPoint(mouse.X, mouse.Y);
                    if (hit != null)
                    {
                        headSlot.G = 0;
                        headSlot.B = 0;
                    }
                }
            }

            base.Draw(gameTime);
        }