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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#ifndef plTriUtils_inc
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#define plTriUtils_inc
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class plTriUtils
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{
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public:
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enum Bary {
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kInsideTri = 0x0,
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kOnVertex0 = 0x1,
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kOnVertex1 = 0x2,
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kOnVertex2 = 0x4,
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kOnVertex = kOnVertex0 | kOnVertex1 | kOnVertex2,
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kOnEdge01 = 0x8,
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kOnEdge12 = 0x10,
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kOnEdge02 = 0x20,
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kOnEdge = kOnEdge01 | kOnEdge12 | kOnEdge02,
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kOutsideTri = 0x100,
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kDegenerateTri = 0x200,
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};
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protected:
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Bary IComputeBarycentric(const hsVector3& v12, hsScalar invLenSq12, const hsVector3& v0, const hsVector3& v1, hsPoint3& out);
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int ISelectAxis(const hsVector3& norm);
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hsBool IFastBarycentric(int iAx, const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, const hsPoint3&p, hsPoint3& out);
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public:
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Bary ComputeBarycentricProjection(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, hsPoint3&p, hsPoint3& out);
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Bary ComputeBarycentric(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, const hsPoint3&p, hsPoint3& out);
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hsBool FastBarycentricProjection(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, hsPoint3&p, hsPoint3& out);
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hsBool FastBarycentric(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, const hsPoint3&p, hsPoint3& out);
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hsBool ProjectOntoPlane(const hsVector3& norm, hsScalar dist, hsPoint3& p);
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hsBool ProjectOntoPlane(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, hsPoint3& p);
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hsBool ProjectOntoPlaneAlongVector(const hsVector3& norm, hsScalar dist, const hsVector3& vec, hsPoint3& p);
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hsBool ProjectOntoPlaneAlongVector(const hsPoint3& p0, const hsPoint3& p1, const hsPoint3& p2, const hsVector3& vec, hsPoint3& p);
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};
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#endif // plTriUtils_inc
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