fix exploding behaviour

diff --git a/Scripts/cloth.js b/Scripts/cloth.js
index 5a7a0f214a7573b5f360215c680aafba4412b570..c77fb1c911a444746845901c7a7d411f86631494 100644 (file)
--- a/Scripts/cloth.js
+++ b/Scripts/cloth.js
@@ -3,8 +3,11 @@ const DRAG = 1 - DAMPING;
 const MASS = 0.1;\r
 const GRAVITY = new THREE.Vector3(0, -9.81 * MASS, 0);\r
 const K = 1;\r
+const MAX_STRETCH = 1.5;\r
 \r
-// Flag Texture\r
+// Explosion am Anfang\r
+// Intersect mit Velocity?\r
+// Wind/Ziehen\r
 \r
 const options = {\r
   wind: true,\r
@@ -25,7 +28,10 @@ class Constraint {
     //const correction = diff.multiplyScalar(1 - (this.restDist / currentDist));\r
     const correction = diff.multiplyScalar((currentDist - this.restDist) / currentDist);\r
     correction.multiplyScalar(K);\r
-    correction.clampLength(0, 1);\r
+    if (currentDist >= this.restDist * MAX_STRETCH) {\r
+\r
+    }\r
+    //correction.clampLength(0, 1);\r
     const correctionHalf = correction.multiplyScalar(0.5);\r
 \r
     let p1movable = this.p1.movable && this.p1.movableTmp;\r
@@ -223,7 +229,7 @@ class Cloth {
       constraint.satisfy();\r
     }\r
 \r
-    this.intersect();\r
+    //this.intersect();\r
   }\r
 \r
   intersect() {\r
@@ -239,20 +245,42 @@ class Cloth {
           continue;\r
 \r
         let dist = p1.position.distanceTo(p2.position);\r
-        const collisionDistance = Math.min(this.width / this.numPointsWidth, this.height / this.numPointsHeight);\r
+        let collisionDistance = Math.min(this.width / this.numPointsWidth, this.height / this.numPointsHeight);\r
+        // collisionDistance /= 2;\r
         if (dist < collisionDistance) {\r
           // p1.movableTmp = false;\r
           // p2.movableTmp = false;\r
-          let diff = p1.position.clone().sub(p2.position).normalize();\r
-          diff.multiplyScalar((collisionDistance - dist) * 1.001 / 2);\r
+          let diffP2P1 = p1.position.clone().sub(p2.position).normalize();\r
+          diffP2P1.multiplyScalar((collisionDistance - dist) * 1.001 / 2);\r
+          let diffP1P2 = diffP2P1.clone().multiplyScalar(-1);\r
+\r
+          // let v1 = p1.position.clone().sub(p1.previous).normalize();\r
+          // let v2 = p2.position.clone().sub(p2.previous).normalize();\r
+\r
+          // let factor1 = (Math.PI - Math.acos(v1.dot(diffP2P1))) / Math.PI * 2;\r
+          // let factor2 = (Math.PI - Math.acos(v2.dot(diffP1P2))) / Math.PI * 2;\r
+\r
           if (p1.movable)\r
-            p1.position.add(diff);\r
+            p1.position.add(diffP2P1);\r
+            //p1.position.add(diffP2P1.multiplyScalar(factor1));\r
           if (p2.movable)\r
-            p2.position.sub(diff);\r
+            p2.position.add(diffP1P2);\r
+            //p2.position.add(diffP1P2.multiplyScalar(factor2));\r
         }\r
       }\r
     }\r
   }\r
+  blow(camPos, intersects) {\r
+    let face = intersects[0].face;\r
+    let dir = intersects[0].point.clone().sub(camPos).multiplyScalar(100);\r
+    this.particles[face.a].addForce(dir);\r
+    this.particles[face.b].addForce(dir);\r
+    this.particles[face.c].addForce(dir);\r
+  }\r
+  drag(mousePosWorld, index) {\r
+    let dir = mousePosWorld.clone().sub(this.particles[index].position).multiplyScalar(200);\r
+    this.particles[index].addForce(dir);\r
+  }\r
 \r
   /**\r
    * helper function to calculate index of vertex\r

diff --git a/Scripts/main.js b/Scripts/main.js
index 5e68a4f322020e8baea4bbd6ffdc44b94235f024..51d676254df65d909c4d90deb63df3101a72ddb4 100644 (file)
--- a/Scripts/main.js
+++ b/Scripts/main.js
@@ -1,19 +1,19 @@
 \r
 \r
 function addLights(scene){\r
-  scene.add( new THREE.AmbientLight( 0x222222 ) );\r
+  scene.add(new THREE.AmbientLight(0x222222));\r
 \r
-  const light1 = new THREE.PointLight( 0xffffff, 1, 50 );\r
-  light1.position.set( 15, 1, 40 );\r
-  scene.add( light1 );\r
+  const light1 = new THREE.PointLight(0xffffff, 1, 50);\r
+  light1.position.set(15, 1, 40);\r
+  scene.add(light1);\r
 \r
-  const light2 = new THREE.PointLight( 0xffffff, 1, 50 );\r
-  light2.position.set( -15, 0, 40 );\r
-  scene.add( light2 );\r
+  const light2 = new THREE.PointLight(0xffffff, 1, 50);\r
+  light2.position.set(-15, 0, 40);\r
+  scene.add(light2);\r
 \r
-  const light3 = new THREE.PointLight( 0xffffff, 1, 50 );\r
-  light3.position.set( 0, -1, 40 );\r
-  scene.add( light3 );\r
+  const light3 = new THREE.PointLight(0xffffff, 1, 50);\r
+  light3.position.set(0, -1, 40);\r
+  scene.add(light3);\r
 }\r
 \r
 /**\r
@@ -45,11 +45,11 @@ function setup_scene(canvasSpace) {
     });\r
 \r
   /** add flag pole */\r
-  const geometry = new THREE.CylinderGeometry( 0.02, 0.02, 5, 32 );\r
-  const material = new THREE.MeshStandardMaterial( {color: 0xffffff} );\r
-  const cylinder = new THREE.Mesh( geometry, material );\r
+  const geometry = new THREE.CylinderGeometry(0.02, 0.02, 5, 32);\r
+  const material = new THREE.MeshStandardMaterial({color: 0xffffff});\r
+  const cylinder = new THREE.Mesh(geometry, material);\r
   cylinder.position.set(-0.5, -2.25, 0);\r
-  scene.add( cylinder );\r
+  scene.add(cylinder);\r
 \r
   /** add global light */\r
   const directionalLight = new THREE.DirectionalLight(0xffffff, 1);\r
@@ -84,7 +84,7 @@ function init() {
 \r
   const cloth = new Cloth(1, 0.5, 20, 20);\r
   const clothGeometry = cloth.generateGeometry();\r
-  const clothMaterial = new THREE.MeshStandardMaterial({ map: loader.load('Textures/hsrm.jpg'), color: 0xffffff, side: THREE.DoubleSide, flatShading: false});\r
+  const clothMaterial = new THREE.MeshStandardMaterial({ map: loader.load('Textures/hsrm2.png'), color: {type: "c", value: new THREE.Color(0xffffff)}, side: THREE.DoubleSide, flatShading: false, transparent: true });\r
   //const clothMaterial = new THREE.MeshStandardMaterial({ color: 0xC70039, side: THREE.DoubleSide, flatShading: false });\r
   const clothMesh = new THREE.Mesh(clothGeometry, clothMaterial);\r
   scene.add(clothMesh);\r
@@ -96,7 +96,9 @@ function init() {
 \r
   let raycaster = new THREE.Raycaster();\r
   let intersects;\r
-  let rightMousePressed;\r
+  let windKeyDown = false;\r
+  let dragKeyDown = false;\r
+  let draggedIndex = -1;\r
   /**\r
    * function called every frame\r
    * @param {number} dt - time passed since last frame in ms\r
@@ -106,13 +108,18 @@ function init() {
 \r
     cloth.updateGeometry(clothGeometry);\r
     \r
-    raycaster.setFromCamera( new THREE.Vector2((mousePos.x / w) * 2 - 1, ((h - mousePos.y) / h) * 2 - 1), camera );\r
-\r
-    // intersects = raycaster.intersectObject( mesh );\r
-\r
-    // if ( intersects.length > 0 && rightMousePressed) {\r
-    //   // Cloth mouse interaction\r
-    // }\r
+    raycaster.setFromCamera(new THREE.Vector2((mousePos.x / w) * 2 - 1, ((h - mousePos.y) / h) * 2 - 1), camera);\r
+\r
+    intersects = raycaster.intersectObject(clothMesh);\r
+\r
+    if (intersects.length > 0) {\r
+      if (windKeyDown)\r
+        cloth.blow(camera.position, intersects);\r
+      if (dragKeyDown && draggedIndex == -1)\r
+        draggedIndex = intersects[0].face.a;\r
+    }\r
+    if (dragKeyDown && draggedIndex != -1)\r
+      cloth.drag(calculateMousePosToWorld(mousePos), draggedIndex);\r
     setTimeout(() => {\r
       animate(frameTime);\r
     }, frameTime);\r
@@ -138,7 +145,7 @@ function init() {
    * start rendering\r
    */\r
   if (canvas.getContext) {\r
-    animate(performance.now());\r
+    animate(frameTime);\r
   }\r
 \r
   \r
@@ -147,8 +154,6 @@ function init() {
   canvas.onmousemove = (evt) => {\r
     mousePos.x = evt.clientX;\r
     mousePos.y = evt.clientY;\r
-\r
-    //cloth.mouseMove(calculateMousePosToWorld(evt));\r
   };\r
 \r
   /**\r
@@ -158,38 +163,38 @@ function init() {
     evt.preventDefault();\r
   }, false);\r
 \r
+  document.onkeydown = (evt) => {\r
+    if (evt.code === "KeyW")\r
+      windKeyDown = true;\r
+    if (evt.code === "KeyD")\r
+      dragKeyDown = true;\r
+  };\r
 \r
-  canvas.onmousedown = (evt) => {\r
-\r
-    // Check mouse click\r
-    rightMousePressed = evt.button == 2;\r
-    \r
-    if(intersects.length > 0 && evt.button == 0){\r
-      //cloth.mousePress(intersects);\r
-    } \r
-  }\r
-  \r
-  canvas.onmouseup = (evt) => {\r
-    //cloth.mouseRelease();\r
-    rightMousePressed = false;\r
-  }\r
+  document.onkeyup = (evt) => {\r
+    if (evt.code === "KeyW")\r
+      windKeyDown = false;\r
+    if (evt.code === "KeyD") {\r
+      dragKeyDown = false;\r
+      draggedIndex = -1;\r
+    }\r
+  };\r
 \r
-  function calculateMousePosToWorld(evt){\r
+  function calculateMousePosToWorld(mousePos){\r
     var vec = new THREE.Vector3(); // create once and reuse\r
     var pos = new THREE.Vector3(); // create once and reuse\r
 \r
     vec.set(\r
-      ( evt.clientX / window.innerWidth ) * 2 - 1,\r
-    - ( evt.clientY / window.innerHeight ) * 2 + 1,\r
-      0.5 );\r
+      (mousePos.x / window.innerWidth) * 2 - 1,\r
+    - (mousePos.y / window.innerHeight) * 2 + 1,\r
+      0.5);\r
 \r
-    vec.unproject( camera );\r
+    vec.unproject(camera);\r
 \r
-    vec.sub( camera.position ).normalize();\r
+    vec.sub(camera.position).normalize();\r
 \r
     var distance = - camera.position.z / vec.z;\r
 \r
-    pos.copy( camera.position ).add( vec.multiplyScalar( distance ) );\r
+    pos.copy(camera.position).add(vec.multiplyScalar(distance));\r
     return pos;\r
   }\r
 }
\ No newline at end of file

diff --git a/Textures/hsrm2.png b/Textures/hsrm2.png
new file mode 100644 (file)
index 0000000..6b83d6b
Binary files /dev/null and b/Textures/hsrm2.png differ

diff --git a/index.html b/index.html
index 14f79e41311ad6a9018c97591356f3dfc5b445fe..de3e51b6e17ceb93cc46793a4f9f49337e4f8b82 100644 (file)
--- a/index.html
+++ b/index.html
@@ -20,7 +20,7 @@
 \r
        <div id="threejscontainer"></div>\r
        <div id="Output"></div>\r
-       <input type="checkbox" id="windToggle" checked="true">Wind</input>\r
+       <input type="checkbox" id="windToggle">Wind</input>\r
 </body>\r
 \r
 </html>
\ No newline at end of file