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Brush Engine

The Shale brush engine lets reviewers draw directly on 3D environments with expressive, layered visual notes.

ToolDescription
BrushSmooth, pressure-sensitive strokes for freeform markup
PencilHard-edged strokes for precise linework
EraserRemove strokes selectively
  • Size — adjust brush radius
  • Opacity — control stroke transparency
  • Hardness / Softness — feather or sharpen stroke edges
  • Color — integrated color picker for any markup color

Existing strokes can be panned, rotated, and scaled after placement for precise positioning.

Multiple reviewers can leave independent annotation layers on the same scene. Layers can be toggled on/off to review feedback individually or all at once.