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371 lines
7.3 KiB
371 lines
7.3 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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#include "hsTypes.h"
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#include "plDynaDecal.h"
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#include "plAuxSpan.h"
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hsBool plDynaSplot::Age(double t, hsScalar ramp, hsScalar decay, hsScalar life)
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{
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hsScalar age = hsScalar(t - fBirth);
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if( age >= life )
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return true;
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int n = fNumVerts;
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if( !n )
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return true;
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hsScalar atten = fInitAtten;
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if( age < ramp )
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{
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atten *= age / ramp;
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fFlags |= kFresh;
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}
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else if( age > decay )
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{
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atten *= (life - age) / (life - decay);
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fFlags |= kFresh;
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}
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else if( fFlags & kFresh )
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{
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fFlags &= ~kFresh;
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}
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else
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{
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return false;
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}
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hsPoint3* origUVW = &fAuxSpan->fOrigUVW[fStartVtx];
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if( fFlags & kAttenColor )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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UInt32 diff = UInt32(origUVW->fZ * atten * 255.99f);
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vtx->fDiffuse = 0xff000000
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| (diff << 16)
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| (diff << 8)
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| diff;
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vtx++;
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origUVW++;
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}
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}
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else
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if( fAuxSpan->fFlags & plAuxSpan::kRTLit )
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{
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const int stride = sizeof(plDecalVtxFormat);
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hsScalar* sPtr = &origUVW->fZ;
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unsigned char* alpha = (unsigned char*)&fVtxBase->fDiffuse;
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alpha += 3;
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while( n-- )
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{
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hsScalar initOpac = *sPtr;
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*alpha = unsigned char(initOpac * atten * 255.99f);
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alpha += stride;
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sPtr += 3;
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}
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}
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else
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{
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hsScalar* sPtr = &origUVW->fZ;
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char* oPtr = (char*)&fVtxBase->fUVW[1].fX;
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const int stride = sizeof(plDecalVtxFormat);
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while( n-- )
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{
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(*(hsScalar*)oPtr) = *sPtr * atten;
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oPtr += stride;
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sPtr += 3;
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}
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}
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return false;
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}
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hsBool plDynaRipple::Age(double t, hsScalar ramp, hsScalar decay, hsScalar life)
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{
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hsScalar age = hsScalar(t - fBirth);
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if( age >= life )
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return true;
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int n = fNumVerts;
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if( !n )
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return true;
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hsScalar atten = fInitAtten;
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if( age < ramp )
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{
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atten *= age / ramp;
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}
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else if( age > decay )
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{
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atten *= (life - age) / (life - decay);
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}
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hsScalar scaleU = fC1U / (age*fC2U + 1.f);
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hsScalar scaleV = fC1V / (age*fC2V + 1.f);
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hsPoint3* origUVW = &fAuxSpan->fOrigUVW[fStartVtx];
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if( fFlags & kAttenColor )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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UInt32 diff = UInt32(origUVW->fZ * atten * 255.99f);
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vtx->fDiffuse = 0xff000000
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| (diff << 16)
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| (diff << 8)
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| diff;
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = (origUVW->fY - 0.5f) * scaleV + 0.5f;
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vtx++;
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origUVW++;
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}
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}
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else
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if( fAuxSpan->fFlags & plAuxSpan::kRTLit )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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unsigned char* alpha = ((unsigned char*)&vtx->fDiffuse) + 3;
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*alpha = unsigned char(origUVW->fZ * atten * 255.99f);
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = (origUVW->fY - 0.5f) * scaleV + 0.5f;
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vtx++;
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origUVW++;
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}
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}
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else
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = (origUVW->fY - 0.5f) * scaleV + 0.5f;
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vtx->fUVW[1].fX = origUVW->fZ * atten;
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vtx++;
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origUVW++;
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}
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}
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fFlags &= ~kFresh;
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return false;
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}
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hsBool plDynaWake::Age(double t, hsScalar ramp, hsScalar decay, hsScalar life)
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{
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hsScalar age = hsScalar(t - fBirth);
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if( age >= life )
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return true;
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int n = fNumVerts;
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if( !n )
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return true;
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hsScalar atten = fInitAtten;
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if( age < ramp )
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{
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atten *= age / ramp;
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}
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else if( age > decay )
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{
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atten *= (life - age) / (life - decay);
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}
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hsScalar scaleU = fC1U / (age*fC2U + 1.f);
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hsScalar scaleV = fC1V / (age*fC2V + 1.f);
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hsPoint3* origUVW = &fAuxSpan->fOrigUVW[fStartVtx];
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if( fFlags & kAttenColor )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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UInt32 diff = UInt32(origUVW->fZ * atten * 255.99f);
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vtx->fDiffuse = 0xff000000
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| (diff << 16)
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| (diff << 8)
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| diff;
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = origUVW->fY * scaleV;
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vtx++;
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origUVW++;
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}
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}
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else
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if( fAuxSpan->fFlags & plAuxSpan::kRTLit )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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unsigned char* alpha = ((unsigned char*)&vtx->fDiffuse) + 3;
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*alpha = unsigned char(origUVW->fZ * atten * 255.99f);
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = origUVW->fY * scaleV;
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vtx++;
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origUVW++;
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}
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}
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else
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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vtx->fUVW[0].fX = (origUVW->fX - 0.5f) * scaleU + 0.5f;
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vtx->fUVW[0].fY = origUVW->fY * scaleV;
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vtx->fUVW[1].fX = origUVW->fZ * atten;
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vtx++;
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origUVW++;
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}
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}
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fFlags &= ~kFresh;
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return false;
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}
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hsBool plDynaWave::Age(double t, hsScalar ramp, hsScalar decay, hsScalar life)
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{
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hsScalar age = hsScalar(t - fBirth);
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if( age >= life )
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return true;
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int n = fNumVerts;
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if( !n )
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return true;
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hsScalar atten = fInitAtten;
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if( age < ramp )
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{
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atten *= age / ramp;
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}
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else if( age > decay )
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{
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atten *= (life - age) / (life - decay);
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}
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hsScalar scale = 1.f + life * fScrollRate;
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hsScalar scroll = -fScrollRate * age;
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hsPoint3* origUVW = &fAuxSpan->fOrigUVW[fStartVtx];
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if( fFlags & kAttenColor )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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UInt32 diff = UInt32(origUVW->fZ * atten * 255.99f);
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vtx->fDiffuse = 0xff000000
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| (diff << 16)
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| (diff << 8)
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| diff;
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vtx->fUVW[0].fX = origUVW->fX;
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vtx->fUVW[0].fY = origUVW->fY * scale + scroll;
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vtx++;
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origUVW++;
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}
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}
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else
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if( fAuxSpan->fFlags & plAuxSpan::kRTLit )
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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unsigned char* alpha = ((unsigned char*)&vtx->fDiffuse) + 3;
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*alpha = unsigned char(origUVW->fZ * atten * 255.99f);
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vtx->fUVW[0].fX = origUVW->fX;
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vtx->fUVW[0].fY = origUVW->fY * scale + scroll;
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vtx++;
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origUVW++;
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}
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}
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else
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{
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plDecalVtxFormat* vtx = fVtxBase;
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while( n-- )
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{
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vtx->fUVW[0].fX = origUVW->fX;
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vtx->fUVW[0].fY = origUVW->fY * scale + scroll;
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vtx->fUVW[1].fX = origUVW->fZ * atten;
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vtx++;
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origUVW++;
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}
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}
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fFlags &= ~kFresh;
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return false;
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}
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hsBool plDynaRippleVS::Age(double t, hsScalar ramp, hsScalar decay, hsScalar life)
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{
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hsScalar age = hsScalar(t - fBirth);
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if( age >= life )
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return true;
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int n = fNumVerts;
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if( !n )
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return true;
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fFlags &= ~kFresh;
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return false;
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}
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