mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-12-15 14:08:42 +00:00
631 lines
17 KiB
C++
631 lines
17 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include "std3d.h"
|
|
|
|
#include "nel/3d/ps_ribbon_look_at.h"
|
|
#include "nel/3d/particle_system.h"
|
|
#include "nel/3d/ps_macro.h"
|
|
#include "nel/3d/driver.h"
|
|
|
|
namespace NL3D
|
|
{
|
|
|
|
////////////////////////////////////
|
|
// CPSRibbonLookAt implementation //
|
|
////////////////////////////////////
|
|
|
|
const float ZEpsilon = 10E-3f;
|
|
const float NormEpsilon = 10E-8f;
|
|
|
|
|
|
struct CVectInfo
|
|
{
|
|
NLMISC::CVector Interp;
|
|
NLMISC::CVector Proj;
|
|
};
|
|
typedef std::vector<CVectInfo> TRibbonVect; // a vector used for intermediate computations
|
|
|
|
CPSRibbonLookAt::TVBMap CPSRibbonLookAt::_VBMap; // index buffers with no color
|
|
CPSRibbonLookAt::TVBMap CPSRibbonLookAt::_ColoredVBMap; // index buffer + colors
|
|
|
|
//=======================================================
|
|
CPSRibbonLookAt::CPSRibbonLookAt()
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_CPSRibbonLookAt)
|
|
}
|
|
|
|
//=======================================================
|
|
CPSRibbonLookAt::~CPSRibbonLookAt()
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_CPSRibbonLookAtDtor)
|
|
// delete _DyingRibbons;
|
|
}
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::serial(NLMISC::IStream &f) throw(NLMISC::EStream)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_serial)
|
|
/** Version 4 : added CPSRibbonBase has a base class instead of CPSParticle
|
|
*
|
|
*/
|
|
sint ver = f.serialVersion(4);
|
|
if (ver > 3)
|
|
{
|
|
CPSRibbonBase::serial(f);
|
|
}
|
|
else
|
|
{
|
|
CPSParticle::serial(f);
|
|
}
|
|
CPSColoredParticle::serialColorScheme(f);
|
|
CPSSizedParticle::serialSizeScheme(f);
|
|
serialMaterial(f);
|
|
uint32 dummy = 0; /* _NbDyingRibbons */
|
|
if (ver <= 3)
|
|
{
|
|
f.serial(_SegDuration, _NbSegs, dummy /*_NbDyingRibbons*/);
|
|
}
|
|
ITexture *tex = NULL;
|
|
|
|
if (ver > 2)
|
|
{
|
|
f.serial(_Parametric);
|
|
}
|
|
|
|
|
|
if (!f.isReading())
|
|
{
|
|
tex = _Tex;
|
|
f.serialPolyPtr(tex);
|
|
}
|
|
else
|
|
{
|
|
f.serialPolyPtr(tex);
|
|
setTexture(tex);
|
|
_Tex = tex;
|
|
if (_Tex)
|
|
{
|
|
_Tex->setWrapS(ITexture::Clamp);
|
|
_Tex->setWrapT(ITexture::Clamp);
|
|
}
|
|
setTailNbSeg(_NbSegs); // force to build the vb
|
|
}
|
|
}
|
|
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::setTexture(CSmartPtr<ITexture> tex)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_setTexture)
|
|
_Tex = tex;
|
|
if (_Tex)
|
|
{
|
|
_Tex->setWrapS(ITexture::Clamp);
|
|
_Tex->setWrapT(ITexture::Clamp);
|
|
}
|
|
updateMatAndVbForColor();
|
|
}
|
|
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::step(TPSProcessPass pass)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_step)
|
|
if (pass == PSMotion)
|
|
{
|
|
if (!_Parametric)
|
|
{
|
|
updateGlobals();
|
|
}
|
|
}
|
|
else
|
|
if (
|
|
(pass == PSBlendRender && hasTransparentFaces())
|
|
|| (pass == PSSolidRender && hasOpaqueFaces())
|
|
)
|
|
{
|
|
uint32 step;
|
|
uint numToProcess;
|
|
computeSrcStep(step, numToProcess);
|
|
if (!numToProcess) return;
|
|
|
|
/// update the material color
|
|
CParticleSystem &ps = *(_Owner->getOwner());
|
|
if (ps.getForceGlobalColorLightingFlag() || usesGlobalColorLighting())
|
|
{
|
|
_Mat.setColor(ps.getGlobalColorLighted());
|
|
}
|
|
else
|
|
{
|
|
_Mat.setColor(ps.getGlobalColor());
|
|
}
|
|
/** We support Auto-LOD for ribbons, although there is a built-in LOD (that change the geometry rather than the number of ribbons)
|
|
* that gives better result (both can be used simultaneously)
|
|
*/
|
|
displayRibbons(numToProcess, step);
|
|
}
|
|
else
|
|
if (pass == PSToolRender) // edition mode only
|
|
{
|
|
//showTool();
|
|
}
|
|
}
|
|
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::newElement(const CPSEmitterInfo &info)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_newElement)
|
|
CPSRibbonBase::newElement(info);
|
|
newColorElement(info);
|
|
newSizeElement(info);
|
|
}
|
|
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::deleteElement(uint32 index)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_deleteElement)
|
|
CPSRibbonBase::deleteElement(index);
|
|
deleteColorElement(index);
|
|
deleteSizeElement(index);
|
|
}
|
|
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::resize(uint32 size)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_resize)
|
|
nlassert(size < (1 << 16));
|
|
CPSRibbonBase::resize(size);
|
|
resizeColor(size);
|
|
resizeSize(size);
|
|
}
|
|
|
|
//=======================================================
|
|
void CPSRibbonLookAt::updateMatAndVbForColor(void)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_updateMatAndVbForColor)
|
|
_Mat.setTexture(0, _Tex);
|
|
_Mat.setDoubleSided(true);
|
|
}
|
|
|
|
//=======================================================
|
|
static inline void MakeProj(NLMISC::CVector &dest, const NLMISC::CVector &src)
|
|
{
|
|
NL_PS_FUNC(MakeProj)
|
|
if (fabsf(src.y) > NormEpsilon * NormEpsilon)
|
|
{
|
|
dest.x = src.x / src.y;
|
|
dest.z = src.z / src.y;
|
|
dest.y = src.y;
|
|
}
|
|
}
|
|
|
|
static inline void BuildSlice(const NLMISC::CMatrix &mat, CVertexBuffer &vb, uint8 *currVert, uint32 vertexSize,
|
|
const NLMISC::CVector &I,
|
|
const NLMISC::CVector &K,
|
|
TRibbonVect::iterator pos,
|
|
TRibbonVect::iterator prev,
|
|
TRibbonVect::iterator next,
|
|
float ribSize)
|
|
/// TODO: some optimisation to get a better speed
|
|
{
|
|
NL_PS_FUNC(BuildSlice)
|
|
CHECK_VERTEX_BUFFER(vb, currVert);
|
|
CHECK_VERTEX_BUFFER(vb, currVert);
|
|
NLMISC::CVector tangent;
|
|
|
|
float invTgNorm; // inverse of the' norm of the projected segment
|
|
float tgNorm;
|
|
|
|
if (prev->Proj.y > ZEpsilon && next->Proj.y > ZEpsilon) // the 2 points are in front of the camera
|
|
{
|
|
tangent = next->Proj - prev->Proj;
|
|
tangent.y = 0;
|
|
tgNorm = tangent.norm();
|
|
if (fabs(tgNorm) > 10E-8)
|
|
{
|
|
invTgNorm = 1.f / tgNorm;
|
|
}
|
|
else
|
|
{
|
|
invTgNorm = 1.f;
|
|
}
|
|
// build orthogonals vectors to tangent
|
|
*(NLMISC::CVector *) currVert = pos->Interp + ribSize * invTgNorm * (tangent.x * K - tangent.z * I);
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = pos->Interp + ribSize * invTgNorm * (- tangent.x * K + tangent.z * I);
|
|
}
|
|
else if (prev->Proj.y > ZEpsilon) // second point cross the near plane
|
|
{
|
|
// compute intersection point
|
|
NLMISC::CVector inter;
|
|
NLMISC::CVector tInter = CVector::Null;
|
|
if (fabsf(prev->Proj.y - next->Proj.y) > NormEpsilon)
|
|
{
|
|
float lambda = (next->Proj.y - ZEpsilon) / (next->Proj.y - prev->Proj.y);
|
|
inter = lambda * prev->Interp + (1.f - lambda) * next->Interp;
|
|
MakeProj(tInter, mat * inter);
|
|
}
|
|
else //
|
|
{
|
|
*(NLMISC::CVector *) currVert = pos->Interp;
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = pos->Interp;
|
|
return;
|
|
}
|
|
|
|
tangent = tInter - prev->Proj;
|
|
tangent.y = 0;
|
|
|
|
tgNorm = tangent.norm();
|
|
if (fabs(tgNorm) > 10E-8)
|
|
{
|
|
invTgNorm = 1.f / tgNorm;
|
|
}
|
|
else
|
|
{
|
|
invTgNorm = 1.f;
|
|
}
|
|
// build orthogonals vectors to tangent
|
|
|
|
*(NLMISC::CVector *) currVert = inter + ribSize * invTgNorm * (tangent.x * K - tangent.z * I);
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = inter + ribSize * invTgNorm * (- tangent.x * K + tangent.z * I);
|
|
}
|
|
else if (next->Proj.y > ZEpsilon) // first point cross the near plane
|
|
{
|
|
// compute intersection point
|
|
NLMISC::CVector inter;
|
|
NLMISC::CVector tInter = NLMISC::CVector::Null;
|
|
if (fabsf(prev->Proj.y - next->Proj.y) > NormEpsilon)
|
|
{
|
|
float lambda = (next->Proj.y - ZEpsilon) / (next->Proj.y - prev->Proj.y);
|
|
inter = lambda * prev->Interp + (1.f - lambda) * next->Interp;
|
|
MakeProj(tInter, mat * inter);
|
|
}
|
|
else //
|
|
{
|
|
*(NLMISC::CVector *) currVert = pos->Interp;
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = pos->Interp;
|
|
return;
|
|
}
|
|
|
|
tangent = next->Proj - tInter;
|
|
tangent.y = 0;
|
|
tgNorm = tangent.norm();
|
|
if (fabs(tgNorm) > 10E-8)
|
|
{
|
|
invTgNorm = 1.f / tgNorm;
|
|
}
|
|
else
|
|
{
|
|
invTgNorm = 1.f;
|
|
}
|
|
// build orthogonals vectors to tangent
|
|
|
|
*(NLMISC::CVector *) currVert = inter + ribSize * invTgNorm * (tangent.x * K - tangent.z * I);
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = inter + ribSize * invTgNorm * (- tangent.x * K + tangent.z * I);
|
|
|
|
}
|
|
else // two points are not visible
|
|
{
|
|
*(NLMISC::CVector *) currVert = pos->Interp;
|
|
*(NLMISC::CVector *) (currVert + vertexSize) = pos->Interp;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
void CPSRibbonLookAt::displayRibbons(uint32 nbRibbons, uint32 srcStep)
|
|
{
|
|
// if (!FilterPS[6]) return;
|
|
NL_PS_FUNC(CPSRibbonLookAt_displayRibbons)
|
|
if (!nbRibbons) return;
|
|
nlassert(_Owner);
|
|
CPSRibbonBase::updateLOD();
|
|
if (_UsedNbSegs < 2) return;
|
|
const float date = _Owner->getOwner()->getSystemDate();
|
|
uint8 *currVert;
|
|
CVBnPB &VBnPB = getVBnPB(); // get the appropriate vb (build it if needed)
|
|
CVertexBuffer &VB = VBnPB.VB;
|
|
CIndexBuffer &PB = VBnPB.PB;
|
|
const uint32 vertexSize = VB.getVertexSize();
|
|
uint colorOffset=0;
|
|
const uint32 vertexSizeX2 = vertexSize << 1;
|
|
const NLMISC::CVector I = _Owner->computeI();
|
|
const NLMISC::CVector K = _Owner->computeK();
|
|
const NLMISC::CMatrix &localToWorldMatrix = getLocalToWorldTrailMatrix();
|
|
const NLMISC::CMatrix &mat = getViewMat() * localToWorldMatrix;
|
|
IDriver *drv = this->getDriver();
|
|
#ifdef NL_DEBUG
|
|
nlassert(drv);
|
|
#endif
|
|
drv->setupModelMatrix(localToWorldMatrix);
|
|
_Owner->incrementNbDrawnParticles(nbRibbons); // for benchmark purpose
|
|
const uint numRibbonBatch = getNumRibbonsInVB(); // number of ribbons to process at once
|
|
static TRibbonVect currRibbon;
|
|
static std::vector<float> sizes;
|
|
static std::vector<NLMISC::CRGBA> colors;
|
|
|
|
if (_UsedNbSegs == 0) return;
|
|
|
|
currRibbon.resize(_UsedNbSegs + 1);
|
|
sizes.resize(numRibbonBatch);
|
|
|
|
|
|
/// update material color
|
|
CParticleSystem &ps = *(_Owner->getOwner());
|
|
if (ps.getForceGlobalColorLightingFlag() || usesGlobalColorLighting())
|
|
{
|
|
CPSMaterial::forceModulateConstantColor(true, ps.getGlobalColorLighted());
|
|
}
|
|
else
|
|
if (ps.getColorAttenuationScheme() != NULL || ps.isUserColorUsed())
|
|
{
|
|
CPSMaterial::forceModulateConstantColor(true, ps.getGlobalColor());
|
|
}
|
|
else
|
|
{
|
|
forceModulateConstantColor(false);
|
|
_Mat.setColor(ps.getGlobalColor());
|
|
}
|
|
|
|
if (_ColorScheme)
|
|
{
|
|
colorOffset = VB.getColorOff();
|
|
colors.resize(numRibbonBatch);
|
|
}
|
|
|
|
|
|
|
|
uint toProcess;
|
|
uint ribbonIndex = 0; // index of the first ribbon in the batch being processed
|
|
uint32 fpRibbonIndex = 0;
|
|
if (_ColorScheme)
|
|
{
|
|
_ColorScheme->setColorType(drv->getVertexColorFormat());
|
|
}
|
|
do
|
|
{
|
|
toProcess = std::min((uint) (nbRibbons - ribbonIndex) /* = left to do */, numRibbonBatch);
|
|
/// setup sizes
|
|
const float *ptCurrSize;
|
|
uint32 ptCurrSizeIncrement;
|
|
if (_SizeScheme)
|
|
{
|
|
ptCurrSize = (float *) _SizeScheme->make(this->_Owner, ribbonIndex, &sizes[0], sizeof(float), toProcess, true, srcStep);
|
|
ptCurrSizeIncrement = 1;
|
|
}
|
|
else
|
|
{
|
|
ptCurrSize = &_ParticleSize;
|
|
ptCurrSizeIncrement = 0;
|
|
}
|
|
|
|
|
|
/// setup colors
|
|
NLMISC::CRGBA *ptCurrColor=0;
|
|
if (_ColorScheme)
|
|
{
|
|
colors.resize(nbRibbons);
|
|
ptCurrColor = (NLMISC::CRGBA *) _ColorScheme->make(this->_Owner, ribbonIndex, &colors[0], sizeof(NLMISC::CRGBA), toProcess, true, srcStep);
|
|
}
|
|
VB.setNumVertices(2 * (_UsedNbSegs + 1) * toProcess);
|
|
{
|
|
CVertexBufferReadWrite vba;
|
|
VB.lock (vba);
|
|
currVert = (uint8 *) vba.getVertexCoordPointer();
|
|
for (uint k = ribbonIndex; k < ribbonIndex + toProcess; ++k)
|
|
{
|
|
|
|
TRibbonVect::iterator rIt = currRibbon.begin(), rItEnd = currRibbon.end(), rItEndMinusOne = rItEnd - 1;
|
|
|
|
////////////////////////////////////
|
|
// interpolate and project points //
|
|
////////////////////////////////////
|
|
|
|
if (!_Parametric)
|
|
{
|
|
|
|
//////////////////////
|
|
// INCREMENTAL CASE //
|
|
//////////////////////
|
|
|
|
// the parent class has a method to get the ribbons positions
|
|
computeRibbon((uint) (fpRibbonIndex >> 16), &rIt->Interp, sizeof(CVectInfo));
|
|
do
|
|
{
|
|
MakeProj(rIt->Proj, mat * rIt->Interp);
|
|
++rIt;
|
|
}
|
|
while (rIt != rItEnd);
|
|
}
|
|
else
|
|
{
|
|
//////////////////////
|
|
// PARAMETRIC CASE //
|
|
//////////////////////
|
|
// we compute each pos thanks to the parametric curve
|
|
_Owner->integrateSingle(date - _UsedSegDuration * (_UsedNbSegs + 1), _UsedSegDuration, _UsedNbSegs + 1, (uint) (fpRibbonIndex >> 16),
|
|
&rIt->Interp, sizeof(CVectInfo) );
|
|
// project each position now
|
|
do
|
|
{
|
|
MakeProj(rIt->Proj, mat * rIt->Interp);
|
|
++rIt;
|
|
}
|
|
while (rIt != rItEnd);
|
|
}
|
|
|
|
rIt = currRibbon.begin();
|
|
|
|
|
|
// setup colors
|
|
if (_ColorScheme)
|
|
{
|
|
uint8 *currColVertex = currVert + colorOffset;
|
|
uint colCount = (_UsedNbSegs + 1) << 1;
|
|
do
|
|
{
|
|
* (CRGBA *) currColVertex = *ptCurrColor;
|
|
currColVertex += vertexSize;
|
|
}
|
|
while (--colCount);
|
|
|
|
++ptCurrColor;
|
|
}
|
|
|
|
/// build the ribbon in vb
|
|
// deals with first point
|
|
BuildSlice(mat, VB, currVert, vertexSize, I, K, rIt, rIt, rIt + 1, *ptCurrSize);
|
|
currVert += vertexSizeX2;
|
|
++rIt;
|
|
|
|
|
|
// deals with other points
|
|
for (;;) // we assume at least 2 segments, so we must have a middle point
|
|
{
|
|
// build 2 vertices with the right tangent. /* to project 2 */ is old projected point
|
|
BuildSlice(mat, VB, currVert, vertexSize, I, K, rIt, rIt - 1, rIt + 1, *ptCurrSize);
|
|
// next position
|
|
++rIt;
|
|
if (rIt == rItEndMinusOne) break;
|
|
// next vertex
|
|
currVert += vertexSizeX2;
|
|
}
|
|
currVert += vertexSizeX2;
|
|
// last point.
|
|
BuildSlice(mat, VB, currVert, vertexSize, I, K, rIt , rIt - 1, rIt, *ptCurrSize);
|
|
ptCurrSize += ptCurrSizeIncrement;
|
|
currVert += vertexSizeX2;
|
|
|
|
fpRibbonIndex += srcStep;
|
|
|
|
}
|
|
}
|
|
PB.setNumIndexes((_UsedNbSegs << 1) * toProcess * 3);
|
|
drv->activeVertexBuffer(VB);
|
|
// display the result
|
|
drv->activeIndexBuffer (PB);
|
|
drv->renderTriangles (_Mat, 0, PB.getNumIndexes()/3);
|
|
ribbonIndex += toProcess;
|
|
}
|
|
while (ribbonIndex != nbRibbons);
|
|
}
|
|
|
|
//==========================================================================
|
|
bool CPSRibbonLookAt::hasTransparentFaces(void)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_hasTransparentFaces)
|
|
return getBlendingMode() != CPSMaterial::alphaTest ;
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
bool CPSRibbonLookAt::hasOpaqueFaces(void)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_hasOpaqueFaces)
|
|
return !hasTransparentFaces();
|
|
}
|
|
|
|
//==========================================================================
|
|
uint32 CPSRibbonLookAt::getNumWantedTris() const
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_getNumWantedTris)
|
|
nlassert(_Owner);
|
|
//return _Owner->getMaxSize() * _NbSegs * 2;
|
|
return _Owner->getSize() * _NbSegs * 2;
|
|
}
|
|
|
|
|
|
|
|
//==========================================================================
|
|
CPSRibbonLookAt::CVBnPB &CPSRibbonLookAt::getVBnPB()
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_getVBnPB)
|
|
TVBMap &map = _ColorScheme ? _VBMap : _ColoredVBMap;
|
|
TVBMap::iterator it = map.find(_UsedNbSegs + 1);
|
|
if (it != map.end())
|
|
{
|
|
return it->second;
|
|
}
|
|
else // must create this vb
|
|
{
|
|
const uint numRibbonInVB = getNumRibbonsInVB();
|
|
CVBnPB &VBnPB = map[_UsedNbSegs + 1]; // make an entry
|
|
|
|
/// set the vb format & size
|
|
CVertexBuffer &vb = VBnPB.VB;
|
|
vb.setVertexFormat(CVertexBuffer::PositionFlag |
|
|
CVertexBuffer::TexCoord0Flag |
|
|
(_ColorScheme ? CVertexBuffer::PrimaryColorFlag : 0));
|
|
vb.setNumVertices(2 * (_UsedNbSegs + 1) * numRibbonInVB );
|
|
vb.setPreferredMemory(CVertexBuffer::AGPVolatile, true);
|
|
CVertexBufferReadWrite vba;
|
|
vb.lock (vba);
|
|
|
|
// set the primitive block size
|
|
CIndexBuffer &pb = VBnPB.PB;
|
|
pb.setFormat(NL_DEFAULT_INDEX_BUFFER_FORMAT);
|
|
pb.setNumIndexes((_UsedNbSegs << 1) * numRibbonInVB * 3);
|
|
CIndexBufferReadWrite iba;
|
|
pb.lock (iba);
|
|
/// Setup the pb and vb parts. Not very fast but executed only once
|
|
uint vbIndex = 0;
|
|
uint pbIndex = 0;
|
|
for (uint i = 0; i < numRibbonInVB; ++i)
|
|
{
|
|
for (uint k = 0; k < (_UsedNbSegs + 1); ++k)
|
|
{
|
|
vba.setTexCoord(vbIndex, 0, CUV((1.f - k / (float) _UsedNbSegs), 0)); /// top vertex
|
|
vba.setTexCoord(vbIndex + 1, 0, CUV((1.f - k / (float) _UsedNbSegs), 1)); /// bottom vertex
|
|
if (k != _UsedNbSegs)
|
|
{
|
|
/// add 2 tri in the primitive block
|
|
iba.setTri(pbIndex, vbIndex + 1, vbIndex + 2, vbIndex);
|
|
iba.setTri(pbIndex+3, vbIndex + 1, vbIndex + 3, vbIndex + 2);
|
|
pbIndex+=6;
|
|
}
|
|
vbIndex += 2;
|
|
}
|
|
}
|
|
return VBnPB;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
uint CPSRibbonLookAt::getNumRibbonsInVB() const
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_getNumRibbonsInVB)
|
|
/// approximation of the max number of vertices we want in a vb
|
|
const uint vertexInVB = 256;
|
|
return std::max(1u, (uint) (vertexInVB / (_UsedNbSegs + 1)));
|
|
}
|
|
|
|
//==========================================================================
|
|
void CPSRibbonLookAt::enumTexs(std::vector<NLMISC::CSmartPtr<ITexture> > &dest, IDriver &drv)
|
|
{
|
|
NL_PS_FUNC(CPSRibbonLookAt_enumTexs)
|
|
if (_Tex)
|
|
{
|
|
dest.push_back(_Tex);
|
|
_Tex->getShareName();
|
|
}
|
|
}
|
|
|
|
|
|
} // NL3D
|