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88 lines
2.7 KiB
88 lines
2.7 KiB
14 years ago
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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 plConvexVolume_inc
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#define plConvexVolume_inc
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#include "../pnSceneObject/plObjInterface.h"
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struct hsPlane3;
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struct hsPoint3;
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struct hsMatrix44;
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class hsResMgr;
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// A convex volume defined by several boundary planes
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// For now it assumes the user won't add planes that make it concave
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class plConvexVolume : public plCreatable
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{
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public:
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plConvexVolume();
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~plConvexVolume();
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CLASSNAME_REGISTER( plConvexVolume );
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GETINTERFACE_ANY( plConvexVolume, plCreatable );
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void Update(const hsMatrix44 &l2w);
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hsBool AddPlane(const hsPlane3 &plane);
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void SetNumPlanesAndClear(const UInt32 num);
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void SetPlane(const hsPlane3 &plane, const UInt32 index);
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// If you only care about the test, call this. Otherwise call ResolvePoint.
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hsBool IsInside(const hsPoint3 &pos) const;
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// returns true if the point was inside the volume, and thus moved outward.
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hsBool ResolvePoint(hsPoint3 &pos) const;
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// returns true if the point was inside and pos and velocity updated to bounce off offending plane.
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// input bounce==1.f for perfect bounce, bounce==0 to slide.
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hsBool BouncePoint(hsPoint3 &pos, hsVector3 &velocity, hsScalar bounce, hsScalar friction) const;
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inline hsBool TestPlane(const hsPoint3 &pos, const hsPlane3 &plane) const; // Is the point inside the plane?
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virtual void Read(hsStream* s, hsResMgr *mgr);
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virtual void Write(hsStream* s, hsResMgr *mgr);
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//virtual hsBool MsgReceive(plMessage* msg);
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protected:
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void IClear();
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hsPlane3 *fLocalPlanes;
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hsPlane3 *fWorldPlanes;
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UInt32 fNumPlanes;
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};
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inline hsBool plConvexVolume::TestPlane(const hsPoint3 &pos, const hsPlane3 &plane) const
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{
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hsScalar dis = plane.fN.InnerProduct(pos);
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dis += plane.fD;
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if( dis >= 0.f )
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return false;
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return true;
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}
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#endif
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