imported Löve GLES branch (changeset 1ba9037e558b)

jni/love/src/modules/physics/box2d/ChainShape.cpp

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+/**
+ * Copyright (c) 2006-2013 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 "ChainShape.h"
+
+// Module
+#include "Body.h"
+#include "World.h"
+#include "Physics.h"
+
+#include "common/Memoizer.h"
+
+namespace love
+{
+namespace physics
+{
+namespace box2d
+{
+
+ChainShape::ChainShape(b2ChainShape *c, bool loop, bool own)
+	: Shape(c, own), loop(loop)
+{
+}
+
+ChainShape::~ChainShape()
+{
+}
+
+void ChainShape::setNextVertex(float x, float y)
+{
+	if (loop)
+	{
+		throw love::Exception("Physics error: Can't call setNextVertex on a loop ChainShape");
+		return;
+	}
+	b2Vec2 v(x, y);
+	b2ChainShape *c = (b2ChainShape *)shape;
+	c->SetNextVertex(Physics::scaleDown(v));
+}
+
+void ChainShape::setPreviousVertex(float x, float y)
+{
+	if (loop)
+	{
+		throw love::Exception("Physics error: Can't call setPreviousVertex on a loop ChainShape");
+		return;
+	}
+	b2Vec2 v(x, y);
+	b2ChainShape *c = (b2ChainShape *)shape;
+	c->SetNextVertex(Physics::scaleDown(v));
+}
+
+EdgeShape *ChainShape::getChildEdge(int index) const
+{
+	b2ChainShape *c = (b2ChainShape *)shape;
+	b2EdgeShape *e = new b2EdgeShape;
+
+	try
+	{
+		c->GetChildEdge(e, index);
+	}
+	catch (love::Exception &ex)
+	{
+		delete e;
+		throw;
+	}
+
+	return new EdgeShape(e, true);
+}
+
+int ChainShape::getChildCount() const
+{
+	b2ChainShape *c = (b2ChainShape *)shape;
+	return c->GetChildCount();
+}
+
+int ChainShape::getVertexCount() const
+{
+	b2ChainShape *c = (b2ChainShape *)shape;
+	return c->m_count;
+}
+
+b2Vec2 ChainShape::getPoint(int index) const
+{
+	b2ChainShape *c = (b2ChainShape *)shape;
+	if (index < 0 || index >= c->m_count)
+		throw love::Exception("Physics error: index out of bounds");
+	const b2Vec2 &v = c->m_vertices[index];
+	return Physics::scaleUp(v);
+}
+
+const b2Vec2 *ChainShape::getPoints() const
+{
+	b2ChainShape *c = (b2ChainShape *)shape;
+	return c->m_vertices;
+}
+
+} // box2d
+} // physics
+} // love