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87 lines
2.7 KiB
87 lines
2.7 KiB
/*==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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