TLTR The time it takes to do one Region.IsVisible(Point) call doesn’t depend on the number of points at all. Instead it depends on the number of rectangles it takes to fully and precisely cover the region. Which depends on..: the shapes those points describe and usually the size of the shape. Example 1: A rectangular … Read more
A few pointers and an example on the use of Regions to define the visible area of a Custom Control that represents a non rectangular shape. You’re converting most floating point values to integer values: don’t do that when drawing, unless you have no other immediate choice. Drawing requires floating point measures (float) most of … Read more
There is a simpler way to flip a Graphics object. Create a Matrix which is the result of the Matrix multiplication of all the transformations that need to be applied to the specified object. A Matrix transformation can be applied to either the GraphicsPath object or the Graphics object. Or both, when multiple transformation need … Read more