Initial Mercurial commit.

src/modules/physics/box2d/DistanceJoint.cpp

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+/**
+* Copyright (c) 2006-2009 LOVE Development Team
+* 
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* 
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+**/
+
+#include "DistanceJoint.h"
+
+// Module
+#include "Body.h"
+#include "World.h"
+
+namespace love
+{
+namespace physics
+{
+namespace box2d
+{
+	DistanceJoint::DistanceJoint(Body * body1, Body * body2, float x1, float y1, float x2, float y2)
+		: Joint(body1, body2)
+	{
+		b2DistanceJointDef def;
+		def.Initialize(body1->body, body2->body, world->scaleDown(b2Vec2(x1,y1)), world->scaleDown(b2Vec2(x2,y2)));
+		joint = (b2DistanceJoint*)createJoint(&def);
+	}
+
+	DistanceJoint::~DistanceJoint()
+	{
+		destroyJoint(joint);
+		joint = 0;
+	}
+
+	void DistanceJoint::setLength(float length)
+	{
+		joint->m_length = world->scaleDown(length);
+	}
+
+	float DistanceJoint::getLength() const
+	{
+		return world->scaleUp(joint->m_length);
+	}
+
+	void DistanceJoint::setFrequency(float hz)
+	{
+		joint->m_frequencyHz = hz;
+	}
+
+	float DistanceJoint::getFrequency() const
+	{
+		return joint->m_frequencyHz;
+	}
+
+	void DistanceJoint::setDamping(float d)
+	{
+		joint->m_dampingRatio = d;
+	}
+
+	float DistanceJoint::getDamping() const
+	{
+		return joint->m_dampingRatio;
+	}
+
+
+} // box2d
+} // physics
+} // love