Re: [fltk.general] Re: Can custom box type functions handle their own high-DPI screen scaling? - [General Use] - Forums

I think the existing fl_push_matrix and fl_pop_matrix should be reused.

However the idea of fl_set_scale(x), returning the old value, is probably good. The result is that the determinant of the matrix is x. I am unsure exactly what this should do to existing translation, rotation, and non-equal scaling (including mirror reflections which might mean the determinant is -x).

On Thu, Feb 25, 2021 at 11:29 AM Greg Ercolano <erco@seriss.com> wrote:

On 2/25/21 9:59 AM, Albrecht Schlosser wrote:

Or, what about this?

float fl_set_scale(float s); // returns old value
void fl_restore_scale(float s); // as we have now

I do like the 'save' and 'restore' wording in a non-stack situation.

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