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