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de5a07ee71
git-svn-id: https://openmw.svn.sourceforge.net/svnroot/openmw/trunk@138 ea6a568a-9f4f-0410-981a-c910a81bb256
98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
/*
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OpenMW - The completely unofficial reimplementation of Morrowind
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Copyright (C) 2008 Nicolay Korslund
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Email: < korslund@gmail.com >
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WWW: http://openmw.snaptoad.com/
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This file (cpp_scale.cpp) is part of the OpenMW package.
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OpenMW is distributed as free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 3, as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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version 3 along with this program. If not, see
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http://www.gnu.org/licenses/ .
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*/
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// WARNING: This file does NOT work, and it is not used yet.
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class ScaleCallback : public btTriangleCallback
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{
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btTriangleCallback *call;
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float factor;
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public:
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ScaleCallback(btTriangleCallback *c, float f)
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{ call = c; factor = f; }
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void processTriangle(btVector3 *tri, int partid, int triindex)
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{
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btVector3 vecs[3];
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vecs[0] = tri[0]*factor;
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vecs[1] = tri[1]*factor;
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vecs[2] = tri[2]*factor;
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call->processTriangle(vecs, partid, triindex);
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}
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};
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// This class is used to uniformly scale a triangle mesh by a
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// factor. It wraps around an existing shape and does not copy the
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// data.
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class ScaleShape : public btConcaveShape
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{
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btConcaveShape* child;
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float factor, fact3, facthalf;
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public:
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ScaleShape(btConcaveShape* ch, float ft)
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{
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child = ch;
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factor = ft;
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fact3 = factor*factor*factor;
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facthalf = factor*0.5;
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}
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void calculateLocalInertia(btScalar mass,btVector3& inertia) const
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{
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btVector3 tmpInertia;
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child->calculateLocalInertia(mass,tmpInertia);
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inertia = tmpInertia * fact3;
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}
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const char* getName()const { return "ScaleShape"; }
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void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
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{
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child->getAabb(t,aabbMin,aabbMax);
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btVector3 aabbCenter = (aabbMax+aabbMin)*0.5;
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btVector3 scaledAabbHalfExtends = (aabbMax-aabbMin)*facthalf;
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aabbMin = aabbCenter - scaledAabbHalfExtends;
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aabbMax = aabbCenter + scaledAabbHalfExtends;
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}
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void processAllTriangles(btTriangleCallback *callback,const btVector3& aabbMin,const btVector3& aabbMax) const
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{
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ScaleCallback scb(callback, factor);
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child->processAllTriangles(&scb, aabbMin, aabbMax);
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}
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void setLocalScaling(const btVector3& scaling)
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{ child->setLocalScaling(scaling); }
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const btVector3& getLocalScaling() const
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{ return child->getLocalScaling(); }
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int getShapeType() const
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{ return TRIANGLE_MESH_SHAPE_PROXYTYPE; }
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};
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