roadmap.md

ChiselCAD — Roadmap

v1 — Core CSG ✓

• CMake + vcpkg build scaffold
• Vulkan context, swapchain, ImGui integration
• Lexer + recursive descent parser (core subset)
• CSG tree evaluator (AST → CsgNode tree)
• Primitive tessellator (cube, sphere, cylinder)
• Manifold boolean evaluation (union, difference, intersection)
• Async eval pipeline with std::stop_token cancellation
• Preview render mode (color-coded primitives)
• Result render mode (evaluated mesh, Blinn-Phong shading)
• GPU mesh double-buffer swap
• Arcball orbit camera
• File watcher + VS Code external editor integration
• Diagnostics panel with clickable jump-to-line
• Binary STL export
• Embedded ImGuiColorTextEdit editor
• Mesh cache (LRU, hash-keyed by CSG subtree)

v2 — Language Expansion ✓

• Full OpenSCAD language: for, if, let, variables, math functions
• User-defined modules and function literals
• 2D primitives: square, circle, polygon
• Extrusion: linear_extrude, rotate_extrude
• hull() and minkowski()

v2.5 — OpenSCAD Language Completeness

Tier A — High Impact (used constantly) ✓

• List indexing v[i]
• Ternary operator condition ? a : b
• User-defined functions function f(x) = expr;
• let expression let (x=10) child
• undef literal
• concat() built-in

Tier B — Math & String Completeness ✓

• Inverse trig: asin(), acos(), atan(), atan2()
• Vector math: norm(), cross(), sign()
• rands(), lookup()
• String literals + str(), chr(), ord()
• len() on strings

Tier C — Module System Completeness ✓

• children() / $children
• echo()
• assert()
• Recursive functions (enabled by user-defined functions)

Tier D — Geometry Operations

• multmatrix()
• color()
• offset()
• projection()
• render()

Tier E — File I/O (complex)

• include <> / use <>
• import()
• surface()
• text() (requires font rendering — significant work)

v3 — Tooling & Visual Quality

• VS Code LSP extension (syntax highlighting, error squiggles, completions)
• AI code assistant panel (Claude API integration)
• SSAO in result render mode
• Deferred shading pipeline
• Additional export formats: OBJ, 3MF
• UNDO/REDO via CSG tree snapshots

Future / Research

• SDF raymarching preview mode (Vulkan compute)
• Custom boolean backend using Embree + Shewchuk robust predicates
• OpenVDB preview for ultra-complex models
• GPU-accelerated tessellation (compute shaders)
• macOS support (MoltenVK)
• Animation / parametric scrubbing