need a pen that does not scale

[Wiladams]

I have been trying to draw some graphics that are designed for a unit 1x1 and then scaled to the appropriate size at runtime. The challenge I have is the pen needs to be a hairline pen (one pixel wide no matter the scaling). Right now, the pen will scale with the scaling of the graphic, and I don't see a way to specify 'no-scaling' for the pen.

One way I've found is to specify a strokeWidth that is a fraction of the intended size, so it almost looks right, but that's not ideal as the x and y scaling will be applied differently, and I don't know at design time what scale something is going to have.

Is there a way to more accurately controle the stroke in this way?

[kobalicek]

Yes this is supported through TransformOrder property:

blContextSetStrokeTransformOrder(context, BL_STROKE_TRANSFORM_ORDER_BEFORE);

I believe it does exactly what you would expect, it changes the order of transformation so the input is transformed before the stroke path is calculated.

[Wiladams]

Just tried this. Works like a charm! Now that I know this, I'll explore some of the other transformation stuff. In particular the ones on images, paths, and patterns.