private void Canvas

private void Canvas_Draw()

in ExampleGallery/GeometryOperations.xaml.cs [139:204]
52 lines of code
5 McCabe index (conditional complexity)

        private void Canvas_Draw(ICanvasAnimatedControl sender, CanvasAnimatedDrawEventArgs args)
        {
            Matrix3x2 displayTransform = Utils.GetDisplayTransform(sender.Size.ToVector2(), new Vector2(1000, 1000));
            args.DrawingSession.Transform = displayTransform;

            args.DrawingSession.FillGeometry(combinedGeometry, Colors.Blue);

            if (showSourceGeometry)
            {
                args.DrawingSession.DrawGeometry(leftGeometry, Colors.Red, 5.0f);

                args.DrawingSession.Transform = interGeometryTransform * displayTransform;
                args.DrawingSession.DrawGeometry(rightGeometry, Colors.Red, 5.0f);
                args.DrawingSession.Transform = displayTransform;
            }

            if (showTessellation)
            {
                foreach (var triangle in tessellation)
                {
                    args.DrawingSession.DrawLine(triangle.Vertex1, triangle.Vertex2, Colors.Gray);
                    args.DrawingSession.DrawLine(triangle.Vertex2, triangle.Vertex3, Colors.Gray);
                    args.DrawingSession.DrawLine(triangle.Vertex3, triangle.Vertex1, Colors.Gray);
                }
            }

            if (CurrentContourTracingAnimation != ContourTracingAnimationOption.None)
            {
                args.DrawingSession.FillCircle(pointOnContourPath, 2, Colors.White);

                const float arrowSize = 10.0f;

                Vector2 tangentLeft = new Vector2(
                    -tangentOnContourPath.Y,
                    tangentOnContourPath.X);

                Vector2 tangentRight = new Vector2(
                    tangentOnContourPath.Y,
                    -tangentOnContourPath.X);

                Vector2 bisectorLeft = new Vector2(
                    tangentOnContourPath.X + tangentLeft.X,
                    tangentOnContourPath.Y + tangentLeft.Y);

                Vector2 bisectorRight = new Vector2(
                    tangentOnContourPath.X + tangentRight.X,
                    tangentOnContourPath.Y + tangentRight.Y);

                Vector2 arrowheadFront = new Vector2(
                    pointOnContourPath.X + (tangentOnContourPath.X * arrowSize * 2),
                    pointOnContourPath.Y + (tangentOnContourPath.Y * arrowSize * 2));

                Vector2 arrowheadLeft = new Vector2(
                    arrowheadFront.X - (bisectorLeft.X * arrowSize),
                    arrowheadFront.Y - (bisectorLeft.Y * arrowSize));

                Vector2 arrowheadRight = new Vector2(
                    arrowheadFront.X - (bisectorRight.X * arrowSize),
                    arrowheadFront.Y - (bisectorRight.Y * arrowSize));

                const float strokeWidth = arrowSize / 4.0f;
                args.DrawingSession.DrawLine(pointOnContourPath, arrowheadFront, Colors.White, strokeWidth);
                args.DrawingSession.DrawLine(arrowheadFront, arrowheadLeft, Colors.White, strokeWidth);
                args.DrawingSession.DrawLine(arrowheadFront, arrowheadRight, Colors.White, strokeWidth);
            }
        }