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