P3/P4: execute OCCT features and export shapes

src/facade/geometryRuntime.ts

@@ -408,7 +408,11 @@ export class BitbybitGeometryRuntime {
     validatePocketInput(input)
     const base = this.resolveShape(input.base).reference
     const client = await this.readyClient()
-    const tool = await this.createExtrusion(client, input)
+    const direction = input.direction ?? [0, 1, 0]
+    const featureInput = input.throughAll
+      ? { ...input, length: await this.throughAllLength(client, base, direction), symmetricToPlane: true }
+      : input
+    const tool = await this.createExtrusion(client, featureInput)
     const kernelShape = await client.occt.booleans.difference({ shape: base, shapes: [tool], keepEdges: false })
     return this.registerShape(kernelShape, input.documentId, input.documentVersion)
   }
@@ -502,6 +506,25 @@ export class BitbybitGeometryRuntime {
     return client.occt.operations.extrude({ shape: face, direction: extrusion })
   }
 
+  private async throughAllLength(client: BitByBitOCCT, shape: KernelShapeReference, direction: Point3) {
+    const mesh = await client.occt.shapeToMesh({ shape, precision: 0.1, adjustYtoZ: false })
+    const directionLength = magnitude(direction)
+    const normalized = direction.map((coordinate) => coordinate / directionLength) as Point3
+    let minimum = Infinity
+    let maximum = -Infinity
+    for (const face of mesh.faceList) {
+      for (let index = 0; index < face.vertexCoord.length; index += 3) {
+        const point: Point3 = [face.vertexCoord[index], face.vertexCoord[index + 1], face.vertexCoord[index + 2]]
+        const projection = dot(point, normalized)
+        minimum = Math.min(minimum, projection)
+        maximum = Math.max(maximum, projection)
+      }
+    }
+    if (!Number.isFinite(minimum) || !Number.isFinite(maximum)) throw new Error('Through-all pocket cannot determine the base Shape extent.')
+    const span = Math.max(maximum - minimum, 1)
+    return span + Math.max(1, span * 0.05)
+  }
+
   private registerShape(reference: KernelShapeReference, documentId: string, documentVersion: number) {
     const handle: ShapeHandle = {
       id: `shape-${Date.now().toString(36)}-${(++this.sequence).toString(36)}`,