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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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#include "hsTypes.h"
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#include "plModulator.h"
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#include "hsResMgr.h"
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#include "hsStream.h"
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#include "hsGeometry3.h"
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#include "hsBounds.h"
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#include "plController.h"
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#include "plIntersect/plVolumeIsect.h"
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plModulator::plModulator()
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: fVolume(nil),
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fSoftDist(0)
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{
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}
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plModulator::~plModulator()
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{
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delete fVolume;
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}
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void plModulator::SetVolume(plVolumeIsect* vol)
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{
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delete fVolume;
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fVolume = vol;
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}
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void plModulator::SetTransform(const hsMatrix44& l2w, const hsMatrix44& w2l)
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{
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hsAssert(fVolume, "Modulator with no Volume is pretty useless");
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fVolume->SetTransform(l2w, w2l);
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}
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// Volume - Want to base this on the closest point on the bounds, instead of just the center.
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hsScalar plModulator::Modulation(const hsBounds3Ext& bnd) const
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{
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return Modulation(bnd.GetCenter());
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}
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hsScalar plModulator::Modulation(const hsPoint3& pos) const
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{
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hsAssert(fVolume, "Modulator with no Volume is pretty useless");
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hsScalar dist = fVolume->Test(pos);
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hsScalar retVal;
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if( dist > 0 )
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{
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if( dist < fSoftDist )
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{
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dist /= fSoftDist;
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retVal = 1.f - dist;
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}
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else
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{
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retVal = 0;
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}
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}
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else
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{
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retVal = 1.f;
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}
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return retVal;
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}
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void plModulator::Read(hsStream* s, hsResMgr* mgr)
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{
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fVolume = plVolumeIsect::ConvertNoRef(mgr->ReadCreatable(s));
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fSoftDist = s->ReadSwapScalar();
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}
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void plModulator::Write(hsStream* s, hsResMgr* mgr)
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{
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mgr->WriteCreatable(s, fVolume);
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s->WriteSwapScalar(fSoftDist);
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}
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