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2.9 bug fixes and new features #193

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2.9 bug fixes and new features #193

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hanoixan
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@hanoixan hanoixan commented Feb 8, 2021

Punya,

Thanks for this amazing Blender addon. I was so excited to use it that I ended up forking it this weekend, and adding some fixes and new features.

  • I've added EdgeCrease (for subd), Remove (remove objects), and a Switch flow control node.
  • A few 2.9x bug fixes that are probably fixed in other PRs as well.
  • I hadn't seen this mentioned in any other issues, but there was a serious bug with loops. The short of it is that execute() is run with forced=True. This is actually very bad, since nodes execute multiple times in the evaluation, causing havoc with things like Set/Get and nodes that assume they're only run once. I added the concept of "scope context" to these. It can probably be better, but I'd love you to take a look and provide feedback.

It looks like there's a backed up log of issues and PRs, so I assume you've got other things going on in your life. So no worries if you can't get back right away.

Thanks!
Sean

@hanoixan
* Fixed bevel and node_modifier Blender 2.9 issues
b61f4a4 
* Added edge crease, object removal, and vector component multiplication functionality
@hanoixan
* Fixed fundamental flaw with loop constructs, which had forced execu…
6ce652f 
…tion on all child-scope nodes. This was also slowing things down, as the first-time bool was being overridden. Also, it caused havoc with Set/Get Value nodes, such as the case where you want to increment a value over time. You could get into a situation where a Set and Get pair were being caused multiple times in a single loop iteration. The solution was a scope_context that rides along with execution, and loops increment its id with every iteration. This lets us re-do execution on each iteration, without forcing execution with a broader stroke.

* Added Switch flow control node, which lets you use up to 16 inputs and select by an index, failing to a Default input.
@hanoixan
Added "Swtich" node to Readme
81bb8b6
@hanoixan
Added WeightedIndex node, which returns a number 0-15 based on the we…
6ba4ded 
…ights assigned. Can drive the Switch to create a simple weighted generation rule.
@hanoixan
Fixed:
c1cc1cc 
* bug in AddElement
* scope restoration in loops
Modified:
* CustomObject to allow non-meshes, as well as copying the hierarchy
* Remove to remove hierarchies
Added:
* New ReferenceObject, which references existing geometry in scene without duplicating it
* The new Generate node, which loads a python DSL grammar and generates L-system style patterns of objects with links
@hanoixan
Added:
352b9dc 
* ability to iteratively mutate the scale, rotation, and translation over repeats (GnMove, GnRotate, GnScale), absolute or relative
* line-accurate errors for parsing generation file
* create links on the fly
* GnMaybe, which attached runtime probability to child sequence
@hanoixan
Added:
b65b7db 
* added gen_instancer
* gen_instancer custom values can contain collection names, definition names, or runnable code (which must be in the form of a list).
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