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Changed reverse camera

This commit is contained in:
Thomas FORGIONE 2015-05-29 10:29:32 +02:00
parent 7be88ccbfd
commit 14e34c0e94
1 changed files with 108 additions and 0 deletions
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108
js/prototype/ReverseCamera.js vendored
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@ -72,3 +72,111 @@ ReverseCamera.prototype.initExtremity = function() {
return this.mesh;
}
ReverseCamera.prototype.regenerateArrow = function(mainCamera) {
var vertices = new Array();
// First point of curve
var f0 = mainCamera.position.clone();
f0.add(Tools.mul(Tools.sum(new THREE.Vector3(0,-0.5,0), Tools.diff(this.target, this.position).normalize()),2));
// Last point of curve
var f1 = this.position.clone();
// Last derivative of curve
var fp1 = Tools.diff(this.target, this.position);
fp1.normalize();
fp1.multiplyScalar(2);
// Camera direction
var dir = Tools.diff(this.position, mainCamera.position);
dir.normalize();
if (fp1.dot(dir) < -0.5) {
// Regen polynom with better stuff
// var new_dir = Tools.cross(Tools.diff(this.position, mainCamera.position).normalize(), mainCamera.up);
// new_dir.multiplyScalar(new_dir.dot(fp1) < 0 ? 1 : -1);
// new_dir.add(dir);
// new_dir.add(dir);
// new_dir.multiplyScalar(2);
// f0.add(new_dir);
if (mainCamera.position.y > this.position.y) {
f0.add(new THREE.Vector3(0,2,0));
} else {
f0.add(new THREE.Vector3(0,-2,0));
}
}
fp1.multiplyScalar(4);
var hermite = new Hermite.special.Polynom(f0, f1, fp1);
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 -= 0.1) {
point = hermite.eval(i);
deriv = hermite.prime(i);
up.cross(deriv);
up.cross(deriv);
up.multiplyScalar(-1);
up.normalize();
var coeff = i * i * this.size / 2;
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)
);
}
this.arrow.geometry.vertices = vertices;
if (this.arrow.geometry.faces.length == 0) {
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));
var max = 0;
for (var i = 0; i < faces.length; i++) {
max = Math.max(max, faces[i].a, faces[i].b, faces[i].c);
}
console.log(max + '/' + len);
this.arrow.geometry.faces = faces;
this.arrow.geometry.facesNeedUpdate = true;
}
// 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;
}