159 lines
5.0 KiB
Markdown
159 lines
5.0 KiB
Markdown
# Cord End-to-End Validation Report
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Date: 2026-03-30
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Branch: feat/format-validation (from main)
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## Build
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**Workspace build**: FAILED initially. Two issues found and fixed:
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1. **cord-expr struct mismatch**: `UserFunc` and `Schematic` structs in `parser.rs` lacked
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`defaults` and `value_returning` fields that `main.rs` and `userfunc.rs` expected.
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Added fields, `#[derive(Clone)]`, and wired `resolve_defaults` through all call sites
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(`userfunc.rs`, `builtins.rs`, `lib.rs`).
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2. **Missing cord-sdf modules**: `main.rs` called `cord_sdf::simplify()` and
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`cord_sdf::sdf_to_cordial()` which existed on `feat/interp-optimize` but not `main`.
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Ported `simplify.rs`, `cordial.rs`, `scad.rs`, and updated `lib.rs` from that branch.
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After fixes: **build succeeds**, **all 248 tests pass**.
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---
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## Test Results
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### Test 1: STL Decompile
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```
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cargo run -- decompile examples/cube.stl
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```
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- **Status**: PASS
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- **Time**: ~2m 02s (debug build)
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- **Output**: 12 triangles loaded, 559049 grid cells, 282465 surface cells, 4 planes detected
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- **Wrote**: `examples/cube.zcd`
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### Test 2: STL Reconstruct
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```
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cargo run -- reconstruct examples/cube.stl
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```
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- **Status**: PASS
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- **Time**: ~2m 14s (debug build)
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- **Output**: Same mesh stats. Produced SDF tree: Difference of Union(2 planes) minus 2 planes.
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Geometry is plane-based (cube = 6 half-spaces intersected). Fit errors ~33 are expected
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for the RANSAC plane fitter on a small cube mesh.
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### Test 3: 3MF Decompile
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```
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cargo run -- decompile /Users/pszsh/Downloads/core.3mf
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```
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- **Status**: PASS
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- **Time**: ~5m 01s (debug build)
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- **Output**: 11918 triangles loaded, 467897 grid cells, 250706 surface cells,
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4 cylinders detected (r=23.5 to r=44.1)
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- **Wrote**: `/Users/pszsh/Downloads/core.zcd`
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### Test 4: 3MF Reconstruct
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```
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cargo run -- reconstruct /Users/pszsh/Downloads/core.3mf
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```
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- **Status**: PASS
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- **Time**: ~5m 57s (debug build)
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- **Output**: 11918 triangles, 6 cylinders detected. Produced parametric Cordial source:
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a `sch Part(...)` schematic with 19 parameters, expressing the geometry as a series of
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cylinder differences with rotations and translations. All dimensions extracted as named
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constants.
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### Test 5: SCAD Build
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```
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cargo run -- build examples/test.scad -o /tmp/test-output.zcd
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```
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- **Status**: PASS
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- **Time**: 0.46s
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- **Output**: Valid ZCD archive (3972 bytes, ZIP format with deflate compression)
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- **Input**: difference(sphere, translated cube) + translated union of 3 rotated cylinders
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### Test 6: SCAD Shader Dump
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```
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cargo run -- shader examples/test.scad
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```
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- **Status**: PASS
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- **Time**: 0.46s
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- **Output**: Complete WGSL shader with `scene_sdf`, raymarcher, normal calculation,
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soft shadows, AO, ground plane grid, and full rendering pipeline.
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96 SSA variables in the SDF function, structurally correct.
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### Test 7: CRD Build
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```
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cargo run -- build examples/hello.crd -o /tmp/hello-output.zcd
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```
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- **Status**: PASS
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- **Time**: 0.46s
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- **Output**: Valid ZCD archive (2938 bytes, ZIP format)
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- **Input**: `sphere(3)` with `cast()`
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---
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## Summary
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| Test | Format | Command | Status | Time |
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|------|--------|---------|--------|------|
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| 1 | STL | decompile | PASS | 2m 02s |
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| 2 | STL | reconstruct | PASS | 2m 14s |
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| 3 | 3MF | decompile | PASS | 5m 01s |
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| 4 | 3MF | reconstruct | PASS | 5m 57s |
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| 5 | SCAD | build | PASS | 0.46s |
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| 6 | SCAD | shader | PASS | 0.46s |
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| 7 | CRD | build | PASS | 0.46s |
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All 7 tests pass. No panics, no crashes, no unexpected errors.
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## Fixes Applied
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1. `crates/cord-expr/src/parser.rs` -- added `defaults` field to `UserFunc`, added `defaults`
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and `value_returning` fields to `Schematic`, added `#[derive(Clone)]` to both structs.
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2. `crates/cord-expr/src/userfunc.rs` -- added `resolve_defaults()` and `eval_default_expr()`
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helper methods; updated `parse_func_def`, `call_user_func_inner`, `parse_sch_def`, and
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`call_schematic` to propagate defaults through the call chain.
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3. `crates/cord-expr/src/builtins.rs` -- updated user-func and schematic call sites to extract
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and pass `defaults` and `value_returning`.
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4. `crates/cord-expr/src/lib.rs` -- updated auto-plot func snapshot to include `defaults`.
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5. `crates/cord-sdf/src/lib.rs` -- added `cordial`, `scad`, and `simplify` modules;
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re-exported `simplify`, `sdf_to_scad`, `sdf_to_cordial`.
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6. `crates/cord-sdf/src/simplify.rs` -- ported from `feat/interp-optimize`.
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7. `crates/cord-sdf/src/cordial.rs` -- ported from `feat/interp-optimize`.
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8. `crates/cord-sdf/src/scad.rs` -- ported from `feat/interp-optimize`.
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## Warnings
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- `cord-expr`: `defaults` and `value_returning` fields trigger dead-code warnings because
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no code path reads them yet (they're populated but only used for future default-parameter
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support). This is expected scaffolding.
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## Performance Notes
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- Decompile/reconstruct times are for debug builds. Release builds would be significantly
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faster.
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- The 3MF mesh (11918 triangles) at depth 7 produces ~468K grid cells. This is the
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bottleneck -- the grid construction and RANSAC fitting dominate runtime.
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- SCAD and CRD pipelines are effectively instant (<0.5s).
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