fix for vertical faces

iTowns · Oct 28, 2021 · f9325d9 · f9325d9
1 parent 121ebfc
commit f9325d9
Showing 1 changed file with 9 additions and 9 deletions.
diff --git a/src/Converter/Feature2Mesh.js b/src/Converter/Feature2Mesh.js
@@ -284,17 +284,17 @@ function featureToPolygon(feature, options) {
                 (geomVertices[3 * (i - 1) + 1] + geomVertices[3 * i + 1]);
         }
         normal.normalize();
-        const pt0 = new THREE.Vector3(geomVertices[0], geomVertices[1], geomVertices[2]);
-        for (let i = 1; i < count; i++) {
-            const ptIn = new THREE.Vector3(geomVertices[3 * i],
+        const quaternion = new THREE.Quaternion();
+        quaternion.setFromUnitVectors(normal, new THREE.Vector3(0, 0, 1));
+        // const pt0 = new THREE.Vector3(geomVertices[0], geomVertices[1], geomVertices[2]);
+        for (let i = 0; i < count; i++) {
+            const pt = new THREE.Vector3(geomVertices[3 * i],
                 geomVertices[3 * i + 1],
                 geomVertices[3 * i +  2]);
-            let v = ptIn - pt0;
-            v -= normal.dot(v) * normal;
-            const ptOut = ptIn + v;
-            geomVertices[3 * i] = ptOut.x;
-            geomVertices[3 * i + 1] = ptOut.y;
-            geomVertices[3 * i + 2] = ptOut.z;
+            pt.applyQuaternion(quaternion);
+            geomVertices[3 * i] = pt.x;
+            geomVertices[3 * i + 1] = pt.y;
+            geomVertices[3 * i + 2] = pt.z;
         }
         const triangles = Earcut(geomVertices, holesOffsets, 3);
         const startIndice = indices.length;