3D scene
Add a 3D model of what you are projecting onto, such as a scan of clay houses. It sits under your 2D layers, lit by a moving sun with real shadows, and lines can follow its edges or be drawn on its surface.
The 3D engine loads from the internet the first time you use it.
Model
Objects
Edge strokes become layers that take any line effect. Edge angle sets how sharp a fold must be to count as an edge. Click the model to pick an object. The eye icon darkens an object but it still casts shadows.
Sun
Projector view