Change Face Representation

diff --git a/Scripts/main.js b/Scripts/main.js
index 843c19a5044a32bc6ee7a24d8d01cdd4ecc50f59..2388293d3b167ef8d4603bf24b794601e3e62089 100644 (file)
--- a/Scripts/main.js
+++ b/Scripts/main.js
@@ -26,10 +26,31 @@ function init() {
     }\r
   }\r
 \r
+  class Face {\r
+    indices = [];\r
+\r
+    constructor(a, b, c, d) {\r
+      this.indices.push(a);\r
+      this.indices.push(b);\r
+      this.indices.push(c);\r
+      this.indices.push(d);\r
+    }\r
+  }\r
+\r
   class Cloth {\r
+    VertexWeight = 1;\r
+\r
     geometry = new THREE.Geometry();\r
 \r
-    \r
+    faces = [];\r
+\r
+    vertexWeights = [];\r
+\r
+    springs = [];\r
+\r
+    getSprings(faceIndex) {\r
+\r
+    }\r
 \r
     static CreateBasic(width, height, numPointsWidth, numPointsHeight) {\r
       let vertices = [];\r
@@ -53,16 +74,10 @@ function init() {
       for (let y = 0; y < numPointsHeight - 1; y++) {\r
         for (let x = 0; x < numPointsWidth - 1; x++) {\r
           faces.push(\r
-            new THREE.Face3(\r
+            new Face(\r
               getVertexIndex(x, y),\r
               getVertexIndex(x, y + 1),\r
               getVertexIndex(x + 1, y),\r
-            )\r
-          );\r
-          faces.push(\r
-            new THREE.Face3(\r
-              getVertexIndex(x + 1, y),\r
-              getVertexIndex(x, y + 1),\r
               getVertexIndex(x + 1, y + 1),\r
             )\r
           );\r
@@ -77,9 +92,43 @@ function init() {
 \r
       for (let i in vertices) {\r
         result.geometry.vertices.push(vertices[i]);\r
+        result.vertexWeights.push(0);\r
       }\r
       for (let i in faces) {\r
-        result.geometry.faces.push(faces[i]);\r
+        let face = faces[i];\r
+\r
+        result.geometry.faces.push(new THREE.Face3(\r
+          face.a, face.b, face.c\r
+        ));\r
+        result.geometry.faces.push(new THREE.Face3(\r
+          face.c, face.b, face.d\r
+        ));\r
+        \r
+        let xLength =\r
+          result.geometry.vertices[face.b]\r
+          .sub(result.geometry.vertices[face.a])\r
+          .length();\r
+        let yLength =\r
+          result.geometry.vertices[face.c]\r
+          .sub(result.geometry.vertices[face.a])\r
+          .length();\r
+        let weight = xLength * yLength / 2;\r
+\r
+        xLength =\r
+          result.geometry.vertices[face.b]\r
+          .sub(result.geometry.vertices[face.d])\r
+          .length();\r
+        yLength =\r
+          result.geometry.vertices[face.c]\r
+          .sub(result.geometry.vertices[face.d])\r
+          .length();\r
+\r
+        weight += xLength * yLength / 2;\r
+\r
+        result.vertexWeights[face.a] += weight / 4;\r
+        result.vertexWeights[face.b] += weight / 4;\r
+        result.vertexWeights[face.c] += weight / 4;\r
+        result.vertexWeights[face.d] += weight / 4;\r
       }\r
 \r
       result.geometry.computeBoundingSphere();\r