void HeightFieldDrawable::accept(osg::PrimitiveFunctor& pf) const
{
// use the cached vertex positions for PrimitiveFunctor operations
if (!_geometry) return;
if (_vertices.valid())
{
pf.setVertexArray(_vertices->size(), &((*_vertices)[0]));
const osg::DrawElementsUShort* deus = dynamic_cast<const osg::DrawElementsUShort*>(_geometry->getDrawElements());
if (deus)
{
pf.drawElements(GL_QUADS, deus->size(), &((*deus)[0]));
}
else
{
const osg::DrawElementsUInt* deui = dynamic_cast<const osg::DrawElementsUInt*>(_geometry->getDrawElements());
if (deui)
{
pf.drawElements(GL_QUADS, deui->size(), &((*deui)[0]));
}
}
}
else
{
_geometry->accept(pf);
}
}
// Functor supplies triangles to things like IntersectionVisitor, ComputeBoundsVisitor, etc.
void
TileDrawable::accept(osg::PrimitiveFunctor& f) const
{
const osg::Vec3Array& verts = *static_cast<osg::Vec3Array*>(_geom->getVertexArray());
const osg::Vec3Array& normals = *static_cast<osg::Vec3Array*>(_geom->getNormalArray());
#if 1 // triangles (OSG-stats-friendly)
//TODO: improve by caching the entire Vec3f, not just the height.
f.begin(GL_TRIANGLES);
for(int t=0; t<_tileSize-1; ++t)
{
for(int s=0; s<_tileSize-1; ++s)
{
int i00 = t*_tileSize + s;
int i10 = i00 + 1;
int i01 = i00 + _tileSize;
int i11 = i01 + 1;
osg::Vec3d v01 = verts[i01] + normals[i01] * _heightCache[i01];
osg::Vec3d v10 = verts[i10] + normals[i10] * _heightCache[i10];
f.vertex( verts[i00] + normals[i00] * _heightCache[i00] );
f.vertex( v01 );
f.vertex( v10 );
f.vertex( v10 );
f.vertex( v01 );
f.vertex( verts[i11] + normals[i11] * _heightCache[i11] );
}
}
f.end();
#else
// triangle-strips (faster? but not stats-friendly; will cause the OSG stats
// to report _tileSize-1 primitive sets per TileDrawable even though there
// is only one.
for(int t=0; t<_tileSize-1; ++t)
{
f.begin( GL_TRIANGLE_STRIP );
for(int s=0; s<_tileSize; ++s)
{
int i = t*_tileSize + s;
f.vertex( verts[i] + normals[i] * _heightCache[i] );
i += _tileSize;
f.vertex( verts[i] + normals[i] * _heightCache[i] );
}
f.end();
}
#endif
}
void
TileDrawable::accept(osg::PrimitiveFunctor& f) const
{
if ( !_elevationRaster.valid() )
return;
const osg::Vec3Array* verts = static_cast<osg::Vec3Array*>(_geom->getVertexArray());
const osg::Vec3Array* normals = static_cast<osg::Vec3Array*>(_geom->getNormalArray());
ImageUtils::PixelReader elevation(_elevationRaster.get());
float
scaleU = _elevationScaleBias(0,0),
scaleV = _elevationScaleBias(1,1),
biasU = _elevationScaleBias(3,0),
biasV = _elevationScaleBias(3,1);
for(int t=0; t<_tileSize-1; ++t)
{
float v = (float)t / (float)(_tileSize-1);
float v1 = (float)(t+1) / (float)(_tileSize-1);
f.begin( GL_QUAD_STRIP );
for(int s=0; s<_tileSize; ++s)
{
float u = (float)s / (float)(_tileSize-1);
int index = t*_tileSize + s;
{
const osg::Vec3f& vert = (*verts)[index];
const osg::Vec3f& normal = (*normals)[index];
float h = elevation(u*scaleU+biasU, v*scaleV+biasV).r();
f.vertex( vert + normal*h );
}
index += _tileSize;
{
const osg::Vec3f& vert = (*verts)[index];
const osg::Vec3f& normal = (*normals)[index];
float h = elevation(u*scaleU+biasU, v1*scaleV+biasV).r();
f.vertex( vert + normal*h );
}
}
f.end();
}
}
void Text3D::accept(osg::PrimitiveFunctor& pf) const
{
// ** for each line, do ...
TextRenderInfo::const_iterator itLine, endLine = _textRenderInfo.end();
for (itLine = _textRenderInfo.begin(); itLine!=endLine; ++itLine)
{
// ** for each glyph in the line, do ...
LineRenderInfo::const_iterator it, end = itLine->end();
for (it = itLine->begin(); it!=end; ++it)
{
pf.setVertexArray(it->_glyph->getVertexArray()->size(),&(it->_glyph->getVertexArray()->front()));
// ** render the front face of the glyph
osg::Geometry::PrimitiveSetList & pslFront = it->_glyph->getFrontPrimitiveSetList();
for(osg::Geometry::PrimitiveSetList::const_iterator itr=pslFront.begin(), end = pslFront.end(); itr!=end; ++itr)
{
(*itr)->accept(pf);
}
// ** render the wall face of the glyph
osg::Geometry::PrimitiveSetList & pslWall = it->_glyph->getWallPrimitiveSetList();
for(osg::Geometry::PrimitiveSetList::const_iterator itr=pslWall.begin(), end=pslWall.end(); itr!=end; ++itr)
{
(*itr)->accept(pf);
}
// ** render the back face of the glyph
osg::Geometry::PrimitiveSetList & pslBack = it->_glyph->getBackPrimitiveSetList();
for(osg::Geometry::PrimitiveSetList::const_iterator itr=pslBack.begin(), end=pslBack.end(); itr!=end; ++itr)
{
(*itr)->accept(pf);
}
}
}
}
// Functor supplies triangles to things like IntersectionVisitor, ComputeBoundsVisitor, etc.
void
TileDrawable::accept(osg::PrimitiveFunctor& f) const
{
#if 1 // triangles (OSG-stats-friendly)
//TODO: improve by caching the entire Vec3f, not just the height.
f.begin(GL_TRIANGLES);
for(int t=0; t<_tileSize-1; ++t)
{
for(int s=0; s<_tileSize-1; ++s)
{
int i00 = t*_tileSize + s;
int i10 = i00 + 1;
int i01 = i00 + _tileSize;
int i11 = i01 + 1;
f.vertex(_mesh[i00]); f.vertex(_mesh[i01]); f.vertex(_mesh[i10]);
f.vertex(_mesh[i10]); f.vertex(_mesh[i01]); f.vertex(_mesh[i11]);
}
}
f.end();
#else
// triangle-strips (faster? but not stats-friendly; will cause the OSG stats
// to report _tileSize-1 primitive sets per TileDrawable even though there
// is only one.
for(int t=0; t<_tileSize-1; ++t)
{
f.begin( GL_TRIANGLE_STRIP );
for(int s=0; s<_tileSize; ++s)
{
int i = t*_tileSize + s;
f.vertex( _mesh[i] );
i += _tileSize;
f.vertex( _mesh[i] );
}
f.end();
}
#endif
}
void
TileDrawable::accept(osg::PrimitiveFunctor& f) const
{
const osg::Vec3Array* verts = static_cast<osg::Vec3Array*>(_geom->getVertexArray());
const osg::Vec3Array* normals = static_cast<osg::Vec3Array*>(_geom->getNormalArray());
if ( _elevationRaster.valid() )
{
ImageUtils::PixelReader elevation(_elevationRaster.get());
elevation.setBilinear(true);
float
scaleU = _elevationScaleBias(0,0),
scaleV = _elevationScaleBias(1,1),
biasU = _elevationScaleBias(3,0),
biasV = _elevationScaleBias(3,1);
//float
// texelScale = (float)(_elevationRaster->s()-1)/(float)_elevationRaster->s(),
// texelBias = 0.5f/(float)(_elevationRaster->s());
if ( osg::equivalent(scaleU, 0.0f) || osg::equivalent(scaleV, 0.0f) )
{
OE_WARN << LC << "Precision loss in tile " << _key.str() << "\n";
}
for(int t=0; t<_tileSize-1; ++t)
{
float v0 = (float)t / (float)(_tileSize-1);
float v1 = (float)(t+1) / (float)(_tileSize-1);
v0 = v0*scaleV + biasV;
v1 = v1*scaleV + biasV;
f.begin( GL_QUAD_STRIP );
for(int s=0; s<_tileSize; ++s)
{
float u = (float)s / (float)(_tileSize-1);
u = u*scaleU + biasU;
int index = t*_tileSize + s;
{
const osg::Vec3f& vert = (*verts)[index];
const osg::Vec3f& normal = (*normals)[index];
float h = elevation(u, v0).r();
f.vertex( vert + normal*h );
}
index += _tileSize;
{
const osg::Vec3f& vert = (*verts)[index];
const osg::Vec3f& normal = (*normals)[index];
float h = elevation(u, v1).r();
f.vertex( vert + normal*h );
}
}
f.end();
}
}
// no elevation
else
{
for(int t=0; t<_tileSize-1; ++t)
{
f.begin( GL_QUAD_STRIP );
for(int s=0; s<_tileSize; ++s)
{
int index = t*_tileSize + s;
f.vertex( (*verts)[index] );
f.vertex( (*verts)[index + _tileSize] );
}
f.end();
}
}
}
void SharedGeometry::accept(osg::PrimitiveFunctor& pf) const
{
pf.setVertexArray(_vertexArray->getNumElements(),static_cast<const osg::Vec3*>(_vertexArray->getDataPointer()));
_drawElements->accept(pf);
}
void ImpostorSprite::accept(osg::PrimitiveFunctor& functor) const
{
functor.setVertexArray(4,_coords);
functor.drawArrays( GL_QUADS, 0, 4);
}
