Added reverse camera (arrow with camera at the end)

controllers/prototype/index.js

@@ -25,3 +25,13 @@ module.exports.viewports = function(req, res) {
         res.send(result);
     });
 }
+
+module.exports.reverse = function(req, res) {
+    res.setHeader('Content-Type', 'text/html');
+
+    res.locals.cameraStyle = 'reverse';
+
+    res.render('prototype.jade', res.locals, function(err, result) {
+        res.send(result);
+    });
+}

controllers/prototype/urls.js

@@ -1,5 +1,6 @@
 module.exports = {
     '/prototype': 'index',
     '/prototype/arrows': 'arrows',
-    '/prototype/viewports': 'viewports'
+    '/prototype/viewports': 'viewports',
+    '/prototype/reverse': 'reverse'
 }

controllers/prototype/views/prototype.jade

@@ -12,6 +12,8 @@ block extrajs
         script Recommendation = FixedCamera;
     else if cameraStyle == 'viewports'
         script Recommendation = OldFixedCamera;
+    else if cameraStyle == 'reverse'
+        script Recommendation = ReverseCamera
     script(src="/static/js/prototype/main.js")
 
 block extrahead

static/js/CameraContainer.js

@@ -52,7 +52,7 @@ CameraContainer.prototype.get = function(i) {
 
 CameraContainer.prototype.getById = function(id) {
     for (var i in this.cameras) {
-        if (this.cameras[i] instanceof FixedCamera) {
+        if (this.cameras[i] instanceof FixedCamera || this.cameras[i] instanceof ReverseCamera) {
             if (this.cameras[i].object3D !== undefined) {
                 if (this.cameras[i].object3D.id == id) {
                     return this.get(i);

static/js/ReverseCamera.js

@@ -0,0 +1,215 @@
+// Initialization
+
+// class camera extends THREE.PerspectiveCamera
+var ReverseCamera = function(arg1, arg2, arg3, arg4, position, target) {
+    THREE.PerspectiveCamera.apply(this, arguments);
+
+    // Set Position
+    if (position === undefined) {
+        this.position = new THREE.Vector3(0,0,5);
+    } else {
+        this.position.x = position.x;
+        this.position.y = position.y;
+        this.position.z = position.z;
+    }
+
+    if (target === undefined)
+        target = new THREE.Vector3(0,0,0);
+
+    var direction = target.clone();
+    direction.sub(this.position);
+    direction.normalize();
+
+    this.target = this.position.clone();
+    this.target.add(Tools.mul(direction,20));
+
+    var geometry = new THREE.Geometry();
+
+    this.center = this.position.clone();
+    var left = Tools.cross(direction, this.up);
+    var other = Tools.cross(direction, left);
+
+    this.center.sub(direction);
+
+    left.normalize();
+    other.normalize();
+    left = Tools.mul(left, 0.1);
+    other  = Tools.mul(other, 0.1);
+
+    var pyramidCenter = Tools.diff(this.position, Tools.mul(direction,0.25))
+    geometry.vertices.push(
+        Tools.sum( Tools.sum( this.position, left),  other),
+        Tools.diff(Tools.sum( this.position, other), left),
+        Tools.diff(Tools.diff(this.position, left),  other),
+        Tools.sum( Tools.diff(this.position, other), left),
+
+        Tools.sum( Tools.sum( this.position, left),  other),
+        Tools.diff(Tools.sum( this.position, other), left),
+        Tools.diff(Tools.diff(this.position, left),  other),
+        Tools.sum( Tools.diff(this.position, other), left)
+        // Tools.diff(this.position, direction)
+    );
+
+    var lambda = 0.6;
+    for (var i = 0; i < 4; i++)
+        geometry.vertices[i] = Tools.mul(Tools.diff(geometry.vertices[i], Tools.mul(pyramidCenter,lambda)), 1/(1-lambda));
+
+
+    geometry.faces.push(new THREE.Face3(2,0,1), // new THREE.Face3(0,2,1),
+                        new THREE.Face3(3,0,2),  // new THREE.Face3(0,3,2)
+
+                        new THREE.Face3(1,0,4),
+                        new THREE.Face3(1,4,5),
+
+                        new THREE.Face3(2,1,5),
+                        new THREE.Face3(2,5,6),
+
+                        new THREE.Face3(7,2,6),
+                        new THREE.Face3(7,3,2),
+
+                        new THREE.Face3(3,7,4),
+                        new THREE.Face3(3,4,0)
+
+    );
+
+    geometry.computeFaceNormals();
+
+    var material = new THREE.MeshLambertMaterial({
+        color : 0xff0000,
+        transparent : true,
+        opacity : 0.5,
+        side: THREE.FrontSide
+    });
+
+    this.mesh = new THREE.Mesh(geometry, material);
+    this.arrow = new THREE.Mesh(new THREE.Geometry(), new THREE.MeshLambertMaterial({color: 0xff0000, side:THREE.BackSide}));
+
+    this.object3D = new THREE.Object3D();
+    this.object3D.add(this.mesh);
+    this.object3D.add(this.arrow);
+
+    this.fullArrow = false;
+}
+ReverseCamera.prototype = Object.create(THREE.PerspectiveCamera.prototype);
+ReverseCamera.prototype.constructor = ReverseCamera;
+
+// Update function
+ReverseCamera.prototype.update = function(mainCamera) {
+    // Compute distance between center of camera and position
+    dist = Tools.norm2(Tools.diff(mainCamera.position, this.center));
+
+    var low_bound = 1;
+    var high_bound = 5;
+    var new_value;
+
+    if (dist < low_bound) {
+        new_value = 0;
+    }
+    else if (dist > high_bound) {
+        new_value = 1;
+    }
+    else {
+        new_value = (dist - low_bound)/(high_bound - low_bound);
+    }
+
+    // Update opacity
+    this.object3D.traverse(function(elt) {
+        if (elt instanceof THREE.Mesh) {
+            elt.material.transparent =   new_value < 0.9;
+            elt.material.opacity = new_value;
+
+            if (new_value < 0.1)
+                elt.material.transparent = elt.visible = false;
+        }
+    });
+
+    this.regenerateArrow(mainCamera);
+}
+
+ReverseCamera.prototype.regenerateArrow = function(mainCamera) {
+    var vertices = new Array();
+    var t = [0,1];
+    var f0 = mainCamera.position.clone();
+    f0.add(Tools.sum(Tools.mul(this.up,-1), Tools.diff(this.target, this.position).normalize()));
+    var f = [Tools.sum(mainCamera.position, Tools.diff(this.target, this.position)).normalize(), this.position.clone()];
+
+    var first = Tools.diff(mainCamera.target, mainCamera.position);
+    first.normalize();
+
+    var fp = [Tools.mul(first,40), Tools.diff(this.target, this.position)];
+    fp[1].normalize();
+    fp[1].multiplyScalar(4);
+    var hermite = new Hermite.special.Polynom(f0, f[1], fp[1]);
+
+    var up = this.up.clone();
+    var point;
+    var deriv;
+    var limit = this.fullArrow ? 0.1 : 0.3;
+
+    // for (var i = this.fullArrow ? 0 : 0.5; i <= 1.001; i += 0.05) {
+    for (var i = 1; i > limit; i -= 0.025) {
+        point = hermite.eval(i);
+        deriv = hermite.prime(i);
+        up.cross(deriv);
+        up.cross(deriv);
+        up.multiplyScalar(-1);
+        up.normalize();
+
+        var coeff = 0.1;
+        var left = Tools.cross(up, deriv); left.normalize(); left.multiplyScalar(coeff);
+        var other = Tools.cross(deriv, left);  other.normalize(); other.multiplyScalar(coeff);
+
+        vertices.push(
+            Tools.sum(Tools.sum(point, left), other),
+            Tools.sum(Tools.diff(point, left), other),
+            Tools.diff(point, Tools.sum(other,left)),
+            Tools.sum(Tools.diff(point, other), left)
+        );
+    }
+
+    var faces = new Array();
+
+    for (var i = 0; i < vertices.length - 4; i+= 4) {
+        faces.push(new THREE.Face3(i,i+1,i+5),new THREE.Face3(i,i+5,i+4),
+                   new THREE.Face3(i+1,i+2,i+6),new THREE.Face3(i+1,i+6,i+5),
+                   new THREE.Face3(i+2,i+3,i+7),new THREE.Face3(i+2,i+7,i+6),
+                   new THREE.Face3(i,i+7,i+3), new THREE.Face3(i,i+4,i+7));
+    }
+
+    var len = vertices.length;
+    faces.push(new THREE.Face3(len-4,len-3,len-2), new THREE.Face3(len-4,len-2,len-1));
+
+
+    this.arrow.geometry.vertices = vertices;
+    this.arrow.geometry.faces = faces;
+
+    // this.arrow.geometry.mergeVertices();
+    this.arrow.geometry.computeFaceNormals();
+    // this.arrow.geometry.computeVertexNormals();
+    this.arrow.geometry.computeBoundingSphere();
+
+    // this.arrow.geometry.vertices[0] = new THREE.Vector3(); // mainCamera.position.clone();
+    // this.arrow.geometry.vertices[1] = this.position.clone();
+
+    this.arrow.geometry.dynamic = true;
+    this.arrow.geometry.verticesNeedUpdate = true;
+    this.arrow.geometry.elementsNeedUpdate = true;
+    this.arrow.geometry.groupsNeedUpdate = true;
+    this.arrow.geometry.normalsNeedUpdate = true;
+    // this.arrow.geometry.facesNeedUpdate = true;
+
+}
+
+// Look function
+ReverseCamera.prototype.look = function() {
+    this.lookAt(this.target);
+}
+
+ReverseCamera.prototype.addToScene = function(scene) {
+    scene.add(this);
+    scene.add(this.object3D);
+}
+
+ReverseCamera.prototype.traverse = function(callback) {
+    this.object3D.traverse(callback);
+}

static/js/prototype/Previewer.js

@@ -39,10 +39,10 @@ Previewer.prototype.render = function(prev, container_width, container_height) {
 
         // Do render in previsualization
         prev.camera.look();
-        renderer.setScissor(left, bottom, width, height);
+        this.renderer.setScissor(left, bottom, width, height);
-        renderer.enableScissorTest (true);
+        this.renderer.enableScissorTest (true);
-        renderer.setViewport(left, bottom, width, height);
+        this.renderer.setViewport(left, bottom, width, height);
-        renderer.render(scene, prev.camera);
+        this.renderer.render(scene, prev.camera);
     }
 
 }

static/js/prototype/raycasterTools.js

@@ -41,11 +41,10 @@ CameraSelecter.prototype.pointedCamera = function() {
         if (bestIndex !== undefined) {
             // if (this.cameras.getById(intersects[bestIndex].object.parent.id) !== undefined) {
                 var obj = intersects[bestIndex].object;
-                if (Recommendation === FixedCamera) {
+                if (Recommendation === FixedCamera || Recommendation === ReverseCamera) {
                     return this.cameras.getById(intersects[bestIndex].object.parent.id);
                 } else {
                     return this.cameras.getById(intersects[bestIndex].object.id);
-                    console.log('tata');
                 }
             // }
         }

urls.js

@@ -5,3 +5,4 @@ module.exports.prototype = '/prototype/';
 module.exports.arrows = '/prototype/arrows/';
 module.exports.viewports = '/prototype/viewports/';
 module.exports.stream = '/stream/';
+module.exports.reverse = '/prototype/reverse/';

views/main.jade

@@ -33,6 +33,8 @@ html(lang='fr')
                             ul.dropdown-menu(role="menu")
                                 li
                                     a(href="#{urls.arrows}") Arrows
+                                li
+                                    a(href="#{urls.reverse}") Reverse arrows
                                 li
                                     a(href="#{urls.viewports}") Viewports
                         li

views/withjs.jade

@@ -14,6 +14,7 @@ block js
     script(src="/static/js/Camera.js")
     script(src="/static/js/FixedCamera.js")
     script(src="/static/js/OldFixedCamera.js")
+    script(src="/static/js/ReverseCamera.js")
     script(src="/static/js/BouncingCube.js")
     script(src="/static/js/BufferGeometryToGeometry.js")
     script(src="/static/js/PointerCamera.js")