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[Hgengine-cvs] SF.net SVN: hgengine:[158] Mercury2/src
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From: <axl...@us...> - 2009-03-02 19:35:25
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Revision: 158
http://hgengine.svn.sourceforge.net/hgengine/?rev=158&view=rev
Author: axlecrusher
Date: 2009-03-02 19:35:20 +0000 (Mon, 02 Mar 2009)
Log Message:
-----------
Add Plane
Added Paths:
-----------
Mercury2/src/MercuryPlane.cpp
Mercury2/src/MercuryPlane.h
Added: Mercury2/src/MercuryPlane.cpp
===================================================================
--- Mercury2/src/MercuryPlane.cpp (rev 0)
+++ Mercury2/src/MercuryPlane.cpp 2009-03-02 19:35:20 UTC (rev 158)
@@ -0,0 +1,65 @@
+#include <MercuryPlane.h>
+#include <stdio.h>
+#include <MercuryMath.h>
+
+bool MercuryPlane::IsBehindPlane(const MercuryVertex& point) const
+{
+ return m_normal.DotProduct( point ) < 0;
+}
+
+bool MercuryPlane::IsBehindPlane(const BoundingBox& bb) const
+{
+ const MercuryVertex& center = bb.GetCenter();
+ const MercuryVertex& extends = bb.GetExtend();
+
+ MercuryVertex A1, A2, A3, tmp;
+
+ tmp = center+MercuryVertex( extends.GetX(), 0, 0 );
+ A1 = (center-tmp).Normalize();
+ tmp = center+MercuryVertex( 0, extends.GetY(), 0 );
+ A2 = (center-tmp).Normalize();
+ tmp = center+MercuryVertex( 0, 0, extends.GetZ() );
+ A3 = (center-tmp).Normalize();
+
+ float x = ABS( extends.GetX() * m_normal.DotProduct( A1 ) );
+ x += ABS( extends.GetY() * m_normal.DotProduct( A2 ) );
+ x += ABS( extends.GetZ() * m_normal.DotProduct( A3 ) );
+
+ float d = m_normal.DotProduct( m_center );
+
+ return ABS( d ) > x;
+}
+
+
+
+/****************************************************************************
+ * Copyright (C) 2009 by Joshua Allen *
+ * *
+ * *
+ * All rights reserved. *
+ * *
+ * Redistribution and use in source and binary forms, with or without *
+ * modification, are permitted provided that the following conditions *
+ * are met: *
+ * * Redistributions of source code must retain the above copyright *
+ * notice, this list of conditions and the following disclaimer. *
+ * * Redistributions in binary form must reproduce the above *
+ * copyright notice, this list of conditions and the following *
+ * disclaimer in the documentation and/or other materials provided *
+ * with the distribution. *
+ * * Neither the name of the Mercury Engine nor the names of its *
+ * contributors may be used to endorse or promote products derived *
+ * from this software without specific prior written permission. *
+ * *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT *
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR *
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT *
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, *
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY *
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE *
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+ ***************************************************************************/
Added: Mercury2/src/MercuryPlane.h
===================================================================
--- Mercury2/src/MercuryPlane.h (rev 0)
+++ Mercury2/src/MercuryPlane.h 2009-03-02 19:35:20 UTC (rev 158)
@@ -0,0 +1,58 @@
+#ifndef MERCURYPLANE_H
+#define MERCURYPLANE_H
+
+#include <MercuryVertex.h>
+#include <BoundingBox.h>
+
+class MercuryPlane
+{
+ public:
+ inline void Setup( const MercuryVertex& center, const MercuryVertex& normal)
+ {
+ m_center = center;
+ SetNormal(normal);
+ }
+
+ inline void SetCenter(const MercuryVertex& center) { m_center = center; }
+ inline void SetNormal(const MercuryVertex& normal) { m_normal = normal.Normalize(); }
+
+ bool IsBehindPlane(const MercuryVertex& point) const;
+ bool IsBehindPlane(const BoundingBox& bb) const;
+ private:
+ MercuryVertex m_center;
+ MercuryVector m_normal;
+};
+
+#endif
+
+/****************************************************************************
+ * Copyright (C) 2009 by Joshua Allen *
+ * *
+ * *
+ * All rights reserved. *
+ * *
+ * Redistribution and use in source and binary forms, with or without *
+ * modification, are permitted provided that the following conditions *
+ * are met: *
+ * * Redistributions of source code must retain the above copyright *
+ * notice, this list of conditions and the following disclaimer. *
+ * * Redistributions in binary form must reproduce the above *
+ * copyright notice, this list of conditions and the following *
+ * disclaimer in the documentation and/or other materials provided *
+ * with the distribution. *
+ * * Neither the name of the Mercury Engine nor the names of its *
+ * contributors may be used to endorse or promote products derived *
+ * from this software without specific prior written permission. *
+ * *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT *
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR *
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT *
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, *
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY *
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE *
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+ ***************************************************************************/
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