Messed up transformation of groups

Question

Messed up transformation of groups

EQt opened this issue 3 years ago · comments

See for example: The clip path is not transformed in the PDF.

The bug also appears sometimes for <image> in a <g>roup.

Elias Kuthe · Answer 1 · Fri Feb 18 2022 21:19:21 GMT+0800 (China Standard Time)

I debugged a lot to understand the code structure and find a workaround in my debug branch. It works for clip_line.svg example above but messes up on other instances, e.g. the tests/example.svg.

Any ideas on why the code fails?

Martin Haug · Answer 2 · Fri Mar 11 2022 18:54:58 GMT+0800 (China Standard Time)

Hey!
Sorry for the late response. Unfortunately, I don't have the bandwidth right now to fix this issue. The culprit could be that the group code seems to be doing nothing with the transform it's been given at all --- but the whole transform handling could be made more robust.

Eventually, I want to fix this by using transform matrices in the PDF content stream more rather than the pre-baked coordinates using the CoordToPdf struct ...