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contrib:externalviewers [2019/06/26 11:41] – transparency knockout explanation sluka | contrib:externalviewers [2019/07/13 09:41] (current) – typo What it means "transparency knockout" sluka | ||
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Objects with //–place top// render the same as objects with default placement over areas with default placement in both viewers. | Objects with //–place top// render the same as objects with default placement over areas with default placement in both viewers. | ||
- | The Foxit behaviour is preferable I think, although, with some symbol sets, you can never get a rock that looks like it is definitively ‘high and dry above the water’, unless you say, draw two rocks, one directly above the other.\\ (Note: Anyway, Foxit ignores | + | The Foxit behaviour is preferable I think, although, with some symbol sets, you can never get a rock that looks like it is definitively ‘high and dry above the water’, unless you say, draw two rocks, one directly above the other.\\ (Note: Anyway, Foxit ignores [[https:// |
Some further information here [[: | Some further information here [[: | ||
- | What it means " | + | **What it means " |
- | Transparency knockout is part of PDF definition which uses Adobe applications as Illustrator, | + | Transparency knockout is part of PDF definition which Adobe applications as Illustrator, |
- | In case of Therion it means that you didn't want rocks to be transparent, | + | In case of Therion it means that you didn't want rocks to be transparent, |
- | see attached examples of preview in program using PDFToolkit (correct) and PDFKit (transparency knockout ignored).\\ | + | See attached examples of preview in program using PDFToolkit (transparency knockout rendered) and PDFKit (transparency knockout ignored).\\ |
- | [[contrib: | + | {{:contrib: |
=====Examples of Rendering Differences Between PDF Viewers===== | =====Examples of Rendering Differences Between PDF Viewers===== | ||
Each of the PDF readers renders Therion generated PDFs differently. Here are some examples from Windows versions of the PDF readers. | Each of the PDF readers renders Therion generated PDFs differently. Here are some examples from Windows versions of the PDF readers. | ||
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**xpdf** \\ | **xpdf** \\ | ||
- | Correct rendering of overlap objects. On MacOSX it is possible to install it by homebrew installer. xpdf should antialias vectors, but not in this case, so rendering is quite coarse. | + | Correct rendering of overlap objects. On MacOSX it is possible to install it by homebrew installer. xpdf should antialias vectors, but not in this case, so rendering is quite coarse. The reason is when transparency knockout is used, the antialiasing in layers is not rendered. It should be corrected in next version of xpdf - current version is 4. |
{{: | {{: | ||