Transform Pixel Coordinates

[arakis]

Is there a build-in way to transform/scale coordinate system? Let's say, image ix 1000x1000, but my mapped coordinate system is from 0..1. Of course, I can multiply/divide them manually, but the question is, is there a build-in way?
The reason is, in my engine I introduced now a new resolution-independent coordinate system, so every drawn UI objects (OpenGL) will scale automatically if resizing the screen. this works fine except for the texture generation (via image sharp).

so, if I want to draw a line from 0.1x0.1 to 0.9x0.9, it should draw a line from 100x100 to 900x900 (if the image is 1000x1000). It's just a sample
otherwise, I need to wrap every Mutate draw call.

[tocsoft]

If your working with Vectors/IPath instances then IPath has a Transform methods that takes a Matrix3x2 that can be used to translate and scale the vector from your base coordinate system to that used by the image. It also has a couple of extension methods Scale is an example that simplifies the simple scaling operation.

Other option you have is make use of the PathBuilder class to build up your IPath. PathBuilder constructor that takes a Matrix that it will apply to all operations run on it.

PS. For drawing over and over again you will want to try and reuse IPath instances between each run (as much as possible) between drawing operations as that is a lot more efficient otherwise we end up recalculating some internals more that required. Basically if you are preformatting the same draw line operations each time then create an IPath using the PathBuilder once and instead call Fill on that once... Also if you are are making use of drawing outlines repeatedly instead call IPath.GenerateOutline() once and then use the Fill() option instead its again will be much quicker (but you will only get real benefit if you are redrawing the same thing regularly.)