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shapes.js
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shapes.js
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//Intersection sphere and box shapes.
//Intersection sphere for sphere, stick render
/** @constructor */
$3Dmol.Sphere = function(center, radius) {
this.center = (center !== undefined) ?
center : new $3Dmol.Vector3();
this.radius = (radius !== undefined) ?
radius : 0;
};
$3Dmol.Sphere.prototype = {
constructor : $3Dmol.Sphere,
set : function(center, radius) {
this.center.copy(center);
this.radius = radius;
return this;
},
copy : function(sphere) {
this.center.copy(sphere.center);
this.radius = sphere.radius;
return this;
},
applyMatrix4 : function(matrix) {
this.center.applyMatrix4(matrix);
this.radius = this.radius * matrix.getMaxScaleOnAxis();
return this;
},
translate : function(offset) {
this.center.add(offset);
return this;
},
equals : function(sphere) {
return sphere.center.equals(this.center) && (sphere.radius === this.radius);
},
clone : function() {
return new $3Dmol.Sphere().copy(this);
}
};
//Bounding cylinder for stick render
/** @constructor */
$3Dmol.Cylinder = function(c1, c2, radius) {
this.c1 = (c1 !== undefined) ?
c1 : new $3Dmol.Vector3();
this.c2 = (c2 !== undefined) ?
c2 : new $3Dmol.Vector3();
this.direction = new $3Dmol.Vector3().subVectors(this.c2, this.c1).normalize();
this.radius = (radius !== undefined) ?
radius : 0;
};
$3Dmol.Cylinder.prototype = {
constructor : $3Dmol.Cylinder,
copy : function(cylinder) {
this.c1.copy(cylinder.c1);
this.c2.copy(cylinder.c2);
this.direction.copy(cylinder.direction);
this.radius = cylinder.radius;
return this;
},
lengthSq : function() {
var vector = new $3Dmol.Vector3();
return function(){
return vector.subVectors(this.c2, this.c1).lengthSq();
};
}(),
applyMatrix4 : function(matrix) {
this.direction.add(this.c1).applyMatrix4(matrix);
this.c1.applyMatrix4(matrix);
this.c2.applyMatrix4(matrix);
this.direction.sub(this.c1).normalize();
this.radius = this.radius * matrix.getMaxScaleOnAxis();
return this;
}
};
//plane specified by three points
/** @constructor */
$3Dmol.Triangle = function(a, b, c){
this.a = (a !== undefined) ?
a : new $3Dmol.Vector3();
this.b = (b !== undefined) ?
b : new $3Dmol.Vector3();
this.c = (c !== undefined) ?
c : new $3Dmol.Vector3();
};
$3Dmol.Triangle.prototype = {
constructor : $3Dmol.Triangle,
copy : function(triangle) {
this.a.copy(triangle.a);
this.b.copy(triangle.b);
this.c.copy(triangle.c);
return this;
},
applyMatrix4 : function(matrix) {
this.a.applyMatrix4(matrix);
this.b.applyMatrix4(matrix);
this.c.applyMatrix4(matrix);
return this;
},
getNormal : function() {
var v1 = new $3Dmol.Vector3();
return function() {
var norm = this.a.clone();
norm.sub(this.b);
v1.subVectors(this.c, this.b);
norm.cross(v1);
norm.normalize();
return norm;
};
}()
};