Add two helpers to tool.Blender that 17+ existing viewport decorators
re-implement byte-identically:
- ViewportDecorator.draw_batch(shader_type, content_pos, color, indices=None)
collapses the validate + batch_for_shader + uniform_float + draw cycle
every shader-driven decorator needs.
- Blender.transparent_color(color, alpha=0.1) is the RGBA-alpha-override
helper duplicated across nest, project, aggregate, model, system module
scopes plus six nested-def copies inside draw methods.
Pure additions on the tool/ layer with direct unit tests covering the
default-alpha, explicit-alpha, non-mutation, new-list-instance, and
validation-guard branches.
Generated with the assistance of an AI coding tool.
Gorgious56
091fc9e7e5