103 lines
2.8 KiB
JavaScript
103 lines
2.8 KiB
JavaScript
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/*
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* Copyright (c) 2006-2007 Erin Catto http:
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked, and must not be
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* misrepresented the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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var b2CircleContact = Class.create();
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Object.extend(b2CircleContact.prototype, b2Contact.prototype);
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Object.extend(b2CircleContact.prototype,
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{
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initialize: function(s1, s2) {
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// The constructor for b2Contact
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// initialize instance variables for references
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this.m_node1 = new b2ContactNode();
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this.m_node2 = new b2ContactNode();
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//
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this.m_flags = 0;
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if (!s1 || !s2){
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this.m_shape1 = null;
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this.m_shape2 = null;
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return;
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}
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this.m_shape1 = s1;
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this.m_shape2 = s2;
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this.m_manifoldCount = 0;
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this.m_friction = Math.sqrt(this.m_shape1.m_friction * this.m_shape2.m_friction);
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this.m_restitution = b2Math.b2Max(this.m_shape1.m_restitution, this.m_shape2.m_restitution);
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this.m_prev = null;
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this.m_next = null;
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this.m_node1.contact = null;
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this.m_node1.prev = null;
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this.m_node1.next = null;
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this.m_node1.other = null;
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this.m_node2.contact = null;
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this.m_node2.prev = null;
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this.m_node2.next = null;
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this.m_node2.other = null;
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//
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// initialize instance variables for references
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this.m_manifold = [new b2Manifold()];
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//
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//super(shape1, shape2);
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//b2Settings.b2Assert(this.m_shape1.m_type == b2Shape.e_circleShape);
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//b2Settings.b2Assert(this.m_shape2.m_type == b2Shape.e_circleShape);
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this.m_manifold[0].pointCount = 0;
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this.m_manifold[0].points[0].normalImpulse = 0.0;
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this.m_manifold[0].points[0].tangentImpulse = 0.0;
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},
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//~b2CircleContact() {}
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Evaluate: function(){
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b2Collision.b2CollideCircle(this.m_manifold[0], this.m_shape1, this.m_shape2, false);
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if (this.m_manifold[0].pointCount > 0)
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{
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this.m_manifoldCount = 1;
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}
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else
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{
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this.m_manifoldCount = 0;
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}
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},
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GetManifolds: function()
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{
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return this.m_manifold;
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},
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m_manifold: [new b2Manifold()]});
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b2CircleContact.Create = function(shape1, shape2, allocator){
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return new b2CircleContact(shape1, shape2);
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};
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b2CircleContact.Destroy = function(contact, allocator){
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//
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};
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