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Added reverse camera (arrow with camera at the end)

This commit is contained in:
Thomas FORGIONE 2015-05-11 08:45:13 +02:00
parent d677390bb2
commit 647843d51b
10 changed files with 239 additions and 8 deletions
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10
controllers/prototype/index.js vendored
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@ -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);
});
}

3
controllers/prototype/urls.js vendored
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@ -1,5 +1,6 @@
module.exports = {
'/prototype': 'index',
'/prototype/arrows': 'arrows',
'/prototype/viewports': 'viewports'
'/prototype/viewports': 'viewports',
'/prototype/reverse': 'reverse'
}

2
controllers/prototype/views/prototype.jade
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@ -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

2
static/js/CameraContainer.js
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@ -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);

215
static/js/ReverseCamera.js Normal file
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@ -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);
}

8
static/js/prototype/Previewer.js vendored
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@ -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);
renderer.enableScissorTest (true);
renderer.setViewport(left, bottom, width, height);
renderer.render(scene, prev.camera);
this.renderer.setScissor(left, bottom, width, height);
this.renderer.enableScissorTest (true);
this.renderer.setViewport(left, bottom, width, height);
this.renderer.render(scene, prev.camera);
}
}

3
static/js/prototype/raycasterTools.js vendored
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@ -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');
}
// }
}

1
urls.js
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@ -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/';

2
views/main.jade
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@ -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

1
views/withjs.jade
View File

@ -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")