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Rotating PDFs Part 1

Finally we can rotate and scale. Maybe.

Issue: 19.5 (September/October 2021)
Author: Marc Zeedar
Author Bio: Marc taught himself programming in high school when he bought his first computer but had no money for software. He's had fun learning ever since.
Article Description: No description available.
Article Length (in bytes): 7,886
Starting Page Number: 82
Article Number: 19507
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project19507.zip Updated: 2021-08-31 23:29:16

Related Link(s): None

Excerpt of article text...

I recently wrote some articles about Xojo's new PDF features (see xDev 18.6 and 19.3), but two key additions—the rotation and scale commands of the graphics class—were missing in action. They worked for pictures, but not for the PDFGraphics class (despite it being a subset of graphics).

Finally, with the release of Xojo 2021R2.1, that problem has been solved.

Or has it? While the features are now implemented, the implementation leaves some questions as to how useful they will be.

Let's Rotate

In theory, using the rotate command is easy. Just add a line like g.rotate(10) to your code (where g is a graphics or PDFGraphics object). As always, though, it's not as simple as it looks.

First, rotation happens in radians, not degrees. (Why? I don't know. I'm not a math person and stuff like this just bewilders me. My whole education has taught me to think in degrees.)

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