Parse convert/watch args into (input, output_str, format_override, via_openscad, via_manifold).

Quantize a position to ~1μm grid for vertex welding.

Resolve the output format from override or file extension.

Return the path to the state file (`~/.config/luacad/state.json`).

Detect system dark mode. On macOS, checks AppleInterfaceStyle.

Disables the texture target appropriate for this frame buffer object.

Enables the texture target appropriate for this frame buffer object.

Returns the texture target this texture is bound to.

checks whether Initialize has been called before or not

If new requested size differs, regenerate FBO texture objects

Apply a pending editor action, returning the new cursor range (as char indices).

Wrap a node in accumulated transforms (innermost first → outermost last).

Blit the FBO contents to a region of the default framebuffer. `dst_x`, `dst_y` are in GL coordinates (bottom-left origin, physical pixels).

Create a CsgGeometry representing a BOSL2 function call.

Convert a CAD-space column-major transform to GL-space. CAD (x,y,z) → GL (y,z,x). This permutes both the rows and columns of the transform matrix.

Convert vertices from CAD space (Z-up) to GL space (Y-up). Mapping: CAD (x,y,z) → GL (y,z,x).

Extract projection matrix as column-major f32 array from three-d Camera.

Extract view matrix as column-major f32 array from three-d Camera.

Collect all unique BOSL module names referenced in a ScadNode tree.

Recursively walk a ScadNode tree, splitting at Union and Color boundaries, collecting `(color, leaf_node)` pairs where each leaf is a non-splittable s

Collect triangles with per-vertex normals, respecting per-subtree colors. Walks the ScadNode tree and materializes colored subtrees independently so

Compute per-face normals for triangle vertices. Returns one normal per vertex (each triangle's 3 vertices share the same face normal).

Downsample a supersampled framebuffer to the target resolution using box filter.

Convert an egui CursorIcon to a winit CursorIcon.

Resize the FBO if dimensions changed. Returns true if resized.

Extract the size as (w, d, h) from a cuboid argument table. Handles two calling conventions: `bosl.cuboid { {40,40,40} }` — first positional is a sub

Extract a 3-element size [w, d, h] from the first positional arg (sub-table).

Flatten all geometries' ScadNode trees into CsgGroups for OpenCSG. Falls back to using the csgrs mesh when no ScadNode is available.

Format an f64 trimming trailing zeros.

redeclared from opencsg.h