P3: expose face edge vertex topology through geometry facade

src/facade/geometryRuntime.ts

@@ -1,7 +1,7 @@
 import { BitByBitOCCT, OccStateEnum } from '@bitbybit-dev/occt-worker'
 import type { Inputs } from '@bitbybit-dev/occt'
-import type { ApplyPlacementInput, BooleanCutInput, BooleanIntersectionInput, BooleanUnionInput, ChamferInput, CreateBoxInput, CreateConeInput, CreateCylinderInput, CreateSphereInput, FilletInput, GeometryCapabilities, GeometryDocumentContext, GeometryFileExport, LinearFeatureParameters, MeshAsset, PadInput, PlanarProfile, PocketInput, Point3, RevolutionInput, ShapeHandle, SubshapeRef } from './types'
-import { createSubshapeRefs } from './topologyNaming'
+import type { ApplyPlacementInput, BooleanCutInput, BooleanIntersectionInput, BooleanUnionInput, ChamferInput, CreateBoxInput, CreateConeInput, CreateCylinderInput, CreateSphereInput, FilletInput, GeometryCapabilities, GeometryDocumentContext, GeometryFileExport, LinearFeatureParameters, MeshAsset, PadInput, PlanarProfile, PocketInput, Point3, RevolutionInput, ShapeHandle, SubshapeRef, SubshapeTopology } from './types'
+import { createEdgeSubshapeRefs, createSubshapeRefs, createVertexSubshapeRefs } from './topologyNaming'
 
 type KernelShapeReference = Inputs.OCCT.TopoDSShapePointer
 type KernelMesh = Inputs.OCCT.DecomposedMeshDto
@@ -438,6 +438,15 @@ export class BitbybitGeometryRuntime {
     return (await this.mesh(shape, precision)).subshapes ?? []
   }
 
+  async topology(shape: ShapeHandle, precision = 0.05): Promise<SubshapeTopology> {
+    finitePositive(precision, 'precision')
+    const entry = this.resolveShape(shape)
+    const client = await this.readyClient()
+    const mesh = await client.occt.shapeToMesh({ shape: entry.reference, precision, adjustYtoZ: false })
+    const faces = mesh.faceList.map((face) => ({ vertexCoord: face.vertexCoord, normalCoord: face.normalCoord, triIndexes: face.triIndexes }))
+    return { faces: createSubshapeRefs(shape.id, shape.documentVersion, faces, Math.max(1e-5, precision * 0.1)).refs, edges: createEdgeSubshapeRefs(shape.id, shape.documentVersion, faces, Math.max(1e-5, precision * 0.1)).refs, vertices: createVertexSubshapeRefs(shape.id, shape.documentVersion, faces, Math.max(1e-5, precision * 0.1)).refs }
+  }
+
   async release(shape: ShapeHandle): Promise<void> {
     const entry = this.shapes.get(shape.id)
     if (!entry) return

src/facade/index.ts

@@ -3,7 +3,7 @@ export { createSqliteProjectPersistence, PersistenceWriteQueue, ProjectAutosaveS
 export { ThreeViewportAdapter } from './threeViewport'
 export { assertShapeHandleIntegrity, BitbybitGeometryRuntime, normalizeBitbybitMesh, validateBooleanCutInput, validateBooleanIntersectionInput, validateBooleanUnionInput, validateBoxInput, validateConeInput, validateCylinderInput, validatePadInput, validatePlacementInput, validatePlanarProfile, validatePocketInput, validateRevolutionInput, validateSphereInput } from './geometryRuntime'
 export { PROJECT_SCHEMA_MIGRATIONS, PROJECT_SCHEMA_SQL, PROJECT_SCHEMA_VERSION } from './projectSchema'
-export type { ApplyPlacementInput, BitBybitViewportAdapter, BitBybitWebCadFacade, BooleanCutInput, BooleanIntersectionInput, BooleanUnionInput, ChamferInput, CommandState, CreateBoxInput, CreateConeInput, CreateCylinderInput, CreateSphereInput, DocumentObjectSnapshot, DocumentSnapshot, FacadeEvent, FacadeState, FilletInput, GeometryCapabilities, GeometryDocumentContext, GeometryFileExport, LinearFeatureParameters, MeshAsset, ModelTreeItem, ObjectPropertySnapshot, PadInput, PersistenceCapabilities, Placement, PlanarProfile, PocketInput, Point3, ProjectRecoveryReport, ProjectResource, ProjectSaveResult, PropertyValue, RecomputeResult, RevolutionInput, SetExpressionInput, SetPropertyInput, ShapeHandle, SubshapeRef, TaskSnapshot } from './types'
+export type { ApplyPlacementInput, BitBybitViewportAdapter, BitBybitWebCadFacade, BooleanCutInput, BooleanIntersectionInput, BooleanUnionInput, ChamferInput, CommandState, CreateBoxInput, CreateConeInput, CreateCylinderInput, CreateSphereInput, DocumentObjectSnapshot, DocumentSnapshot, FacadeEvent, FacadeState, FilletInput, GeometryCapabilities, GeometryDocumentContext, GeometryFileExport, LinearFeatureParameters, MeshAsset, ModelTreeItem, ObjectPropertySnapshot, PadInput, PersistenceCapabilities, Placement, PlanarProfile, PocketInput, Point3, ProjectRecoveryReport, ProjectResource, ProjectSaveResult, PropertyValue, RecomputeResult, RevolutionInput, SetExpressionInput, SetPropertyInput, ShapeHandle, SubshapeRef, SubshapeTopology, TaskSnapshot } from './types'
 export { createEdgeSubshapeRefs, createSubshapeRefs, createVertexSubshapeRefs, matchSubshapes, signatureForEdge, signatureForFace, signatureForVertex } from './topologyNaming'
 export { BasicSketchSolverAdapter, cloneSketch, createSketch, solveSketch } from './sketcher'
 export type { SketchConstraint, SketchDiagnostic, SketchGeometry, SketchPoint, SketchPointRef, SketchSnapshot, SketchSolveOptions, SketchSolveResult, SketchSolverAdapter, SketchSolverStatus } from './sketcher'

src/facade/mockFacade.ts

@@ -462,7 +462,7 @@ export function createMockFacade(): BitBybitWebCadFacade {
     selection: { getObjectId: () => state.selectedObjectId, select, clear: () => select('') },
     task: { getActive: () => getState().task, begin: beginTask, update: (draft) => { if (state.task) state = { ...state, task: { ...state.task, draft: { ...state.task.draft, ...draft } } }; emitState() }, apply: applyTask, cancel: () => { if (state.task) state = { ...state, task: { ...state.task, status: 'cancelled' } }; emitState() } },
     project: { capabilities: () => projectPersistence.capabilities(), save: (document = getState().document) => projectPersistence.save(document), load: (documentId) => projectPersistence.load(documentId), recovery: (documentId) => projectPersistence.recovery(documentId), fcstd: { inspect: (bytes, limits) => inspectFcstdArchive(bytes, limits) }, resource: projectPersistence.resource },
-    geometry: { capabilities: () => geometryRuntime.capabilities(), initialize: () => geometryRuntime.initialize(), createBox: (input) => geometryRuntime.createBox(input), createCylinder: (input) => geometryRuntime.createCylinder(input), createSphere: (input) => geometryRuntime.createSphere(input), createCone: (input) => geometryRuntime.createCone(input), applyPlacement: (input) => geometryRuntime.applyPlacement(input), union: (input) => geometryRuntime.union(input), cut: (input) => geometryRuntime.cut(input), intersection: (input) => geometryRuntime.intersection(input), fillet: (input) => geometryRuntime.fillet(input), chamfer: (input) => geometryRuntime.chamfer(input), exportStep: (shape, fileName) => geometryRuntime.exportStep(shape, fileName), exportStl: (shape, fileName, precision) => geometryRuntime.exportStl(shape, fileName, precision), pad: (input) => geometryRuntime.pad(input), pocket: (input) => geometryRuntime.pocket(input), revolution: (input) => geometryRuntime.revolution(input), mesh: (shape, precision) => geometryRuntime.mesh(shape, precision), subshapes: (shape, precision) => geometryRuntime.subshapes(shape, precision), release: (shape) => geometryRuntime.release(shape), dispose: () => geometryRuntime.dispose() },
+    geometry: { capabilities: () => geometryRuntime.capabilities(), initialize: () => geometryRuntime.initialize(), createBox: (input) => geometryRuntime.createBox(input), createCylinder: (input) => geometryRuntime.createCylinder(input), createSphere: (input) => geometryRuntime.createSphere(input), createCone: (input) => geometryRuntime.createCone(input), applyPlacement: (input) => geometryRuntime.applyPlacement(input), union: (input) => geometryRuntime.union(input), cut: (input) => geometryRuntime.cut(input), intersection: (input) => geometryRuntime.intersection(input), fillet: (input) => geometryRuntime.fillet(input), chamfer: (input) => geometryRuntime.chamfer(input), exportStep: (shape, fileName) => geometryRuntime.exportStep(shape, fileName), exportStl: (shape, fileName, precision) => geometryRuntime.exportStl(shape, fileName, precision), pad: (input) => geometryRuntime.pad(input), pocket: (input) => geometryRuntime.pocket(input), revolution: (input) => geometryRuntime.revolution(input), mesh: (shape, precision) => geometryRuntime.mesh(shape, precision), subshapes: (shape, precision) => geometryRuntime.subshapes(shape, precision), topology: (shape, precision) => geometryRuntime.topology(shape, precision), release: (shape) => geometryRuntime.release(shape), dispose: () => geometryRuntime.dispose() },
     viewport: { createAdapter: () => new ThreeViewportAdapter() },
     getState, subscribe: (listener) => { listeners.add(listener); return () => { listeners.delete(listener) } }, notify,
   }

src/facade/types.ts

@@ -129,6 +129,12 @@ export type SubshapeRef = {
   candidates?: string[]
 }
 
+export type SubshapeTopology = {
+  faces: SubshapeRef[]
+  edges: SubshapeRef[]
+  vertices: SubshapeRef[]
+}
+
 export type MeshAsset = {
   shapeId: string
   topologyVersion: number
@@ -408,6 +414,7 @@ export interface BitBybitWebCadFacade {
     revolution(input: RevolutionInput): Promise<ShapeHandle>
     mesh(shape: ShapeHandle, precision?: number): Promise<MeshAsset>
     subshapes(shape: ShapeHandle, precision?: number): Promise<SubshapeRef[]>
+    topology(shape: ShapeHandle, precision?: number): Promise<SubshapeTopology>
     release(shape: ShapeHandle): Promise<void>
     dispose(): void
   }