X-Git-Url: https://gitweb.ps.run/cloth_sim/blobdiff_plain/60b7eb713036545e4046a16cfd3d312b8837938c..590349d576668595128e2d15bbd72e9391a97fc1:/Scripts/cloth.js

diff --git a/Scripts/cloth.js b/Scripts/cloth.js
index 038b235..266af16 100644
--- a/Scripts/cloth.js
+++ b/Scripts/cloth.js
@@ -373,7 +373,7 @@ getAcceleration(vertexIndex, dt) {
   // constant gravity
   let g = new THREE.Vector3(0, -9.8, 0);
   // stiffness
-  let k = 500;
+  let k = 1000;
 
   // Wind vector
   let fWind = new THREE.Vector3(
@@ -381,13 +381,12 @@ getAcceleration(vertexIndex, dt) {
     Math.cos(vertex.z * this.time),
     Math.sin(Math.cos(5 * vertex.x * vertex.y * vertex.z))
   );
-  fWind.set(0, 0, 0);
 
   /**
    * constant determined by the properties of the surrounding fluids (air)
    * achievement of cloth effects through try out
    * */
-  let a = 0.01;
+  let a = 0.1;
   
   let velocity = new THREE.Vector3(
     (this.previousPositions[vertexIndex].x - vertex.x) / dt,
@@ -490,13 +489,19 @@ verlet(currentPosition, previousPosition, acceleration, passedTime) {
   // next position = 2 * current Position - previous position + acceleration * (passed time)^2
   // acceleration (dv/dt) = F(net)
   // Dependency for one vertex: gravity, fluids/air, springs
-
+  const DRAG = 0.97;
   let nextPosition = new THREE.Vector3(
-    (2 * currentPosition.x) - previousPosition.x + acceleration.x * (passedTime * passedTime),
-    (2 * currentPosition.y) - previousPosition.y + acceleration.y * (passedTime * passedTime),
-    (2 * currentPosition.z) - previousPosition.z + acceleration.z * (passedTime * passedTime),
+    (currentPosition.x - previousPosition.x) * DRAG + currentPosition.x + acceleration.x * (passedTime * passedTime),
+    (currentPosition.y - previousPosition.y) * DRAG + currentPosition.y + acceleration.y * (passedTime * passedTime),
+    (currentPosition.z - previousPosition.z) * DRAG + currentPosition.z + acceleration.z * (passedTime * passedTime),
   );
 
+  // let nextPosition = new THREE.Vector3(
+  //   (2 * currentPosition.x) - previousPosition.x + acceleration.x * (passedTime * passedTime),
+  //   (2 * currentPosition.y) - previousPosition.y + acceleration.y * (passedTime * passedTime),
+  //   (2 * currentPosition.z) - previousPosition.z + acceleration.z * (passedTime * passedTime),
+  // );
+
   return nextPosition;
 }
 
@@ -510,5 +515,12 @@ euler(currentPosition, acceleration, passedTime) {
   return nextPosition;
 }
 
+wind(intersects) {
+  let intersect = intersects[0];
+  this.geometry.vertices[intersect.face.a].z -= 0.05;
+  this.geometry.vertices[intersect.face.b].z -= 0.05;
+  this.geometry.vertices[intersect.face.c].z -= 0.05;
+}
+
 }