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