!657 修正孔面判断问题

src/Production/Product.ts

@@ -366,7 +366,7 @@ export namespace Production
             if (isParallelTo(nail.Normal, brNormal))
             {
                 let nailPosition = nail.Position.applyMatrix4(br.OCSInv);
-                let face = equalv3(nail.Normal, brNormal) ? 0 : 1;
+                let face = equalv3(nail.Normal, brNormal, 1e-3) ? 0 : 1;
                 let depth = face === 1 ? nailPosition.z : br.Thickness - nailPosition.z;
 
                 data.frontBackHoles.push({
@@ -486,7 +486,7 @@ export namespace Production
                 if (position.x <= 0 || position.x >= br.Width || position.y <= 0 || position.y >= br.Height) return;
                 position.sub(offsetTanslation);
                 holes = data.frontBackHoles;
-                face = !equalv3(d.Normal, brNormal) ? 0 : 1;
+                face = !equalv3(d.Normal, brNormal, 1e-3) ? 0 : 1;
                 isPush = true;
             }
         }