FGFS-4.1/OpenSceneGraph
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Ported pfb, txp and obj loaders across to use osg::Geometry.

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This commit is contained in:
Robert Osfield
2002-06-26 14:34:04 +00:00
parent 40fefcf335
commit bdafc27d9c
7 changed files with 125 additions and 225 deletions
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83
src/osgPlugins/txp/TrPageParser.cpp
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@@ -30,7 +30,7 @@
#include <osg/Billboard>
#include <osg/Matrix>
#include <osg/Transform>
#include <osg/GeoSet>
#include <osg/Geometry>
#include <osg/CullFace>
#include <osg/Light>
#include <osg/Transparency>
@@ -216,30 +216,30 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
geom.GetMaterial(0,matId, local);
geom.GetNumNormal(numNorm);
Vec3* vertices = new Vec3[numVert];
Vec3Array* vertices = new Vec3Array(numVert);
// Get vertices
geom.GetVertices(vertices);
geom.GetVertices(&(vertices->front()));
// Turn the trpgGeometry into something Performer can understand
GeoSet *gset = 0L;
Geometry *geometry = 0L;
// Get texture coordinates
Vec2* tex_coords = 0L;
Vec2Array* tex_coords = 0L;
trpgTexData td;
if (geom.GetTexCoordSet(0,&td))
{
tex_coords = new Vec2[numVert];
tex_coords = new Vec2Array(numVert);
for (int i=0 ;i < numVert; i++)
{
tex_coords[i][0] = td.floatData[2*i+0];
tex_coords[i][1] = td.floatData[2*i+1];
(*tex_coords)[i].set(td.floatData[2*i+0],td.floatData[2*i+1]);
}
}
Vec3* normals = 0L;
Vec3Array* normals = 0L;
if (numNorm == numVert)
{
normals = new Vec3[numVert];
geom.GetNormals(normals);
normals = new Vec3Array(numVert);
geom.GetNormals(&(normals->front()));
}
Geode *geode = new Geode();
@@ -248,8 +248,8 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
{
case trpgGeometry::Triangles:
{
gset = new GeoSet;
gset->setPrimType(GeoSet::TRIANGLES);
geometry = new Geometry;
geometry->addPrimitive(new DrawArrays(Primitive::TRIANGLES,0,numPrims*3));
}
break;
case trpgGeometry::TriStrips:
@@ -258,10 +258,15 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
int* primitives = new int[numPrims];
geom.GetPrimLengths(primitives);
// Define GeoSet
gset = new GeoSet;
gset->setPrimType(GeoSet::TRIANGLE_STRIP);
gset->setPrimLengths(primitives);
// Define Geomtry
geometry = new Geometry;
int first=0;
for(int i=0;i<numPrims;++i)
{
geometry->addPrimitive(new DrawArrays(Primitive::TRIANGLE_STRIP,first,primitives[i]));
first += primitives[i];
}
}
break;
case trpgGeometry::TriFans:
@@ -269,10 +274,21 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
// Need primitive lengths too
int* primitives = new int[numPrims];
geom.GetPrimLengths(primitives);
// Need to flip the fans
// create the trifan primitives.
geometry = new Geometry;
int first=0;
int i;
for(i=0;i<numPrims;++i)
{
geometry->addPrimitive(new DrawArrays(Primitive::TRIANGLE_FAN,first,primitives[i]));
first += primitives[i];
}
// Need to flip the fans coords.
int ind = 0;
for (int i=0;i<numPrims;i++)
for (i=0;i<numPrims;++i)
{
int start=ind+1;
int end=primitives[i]+ind-1;
@@ -281,20 +297,16 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
// Swap vertices, texture coords & normals
for (int j=0; j < numSwap; j++ )
{
std::swap(vertices[start], vertices[end]);
std::swap((*vertices)[start], (*vertices)[end]);
if( tex_coords )
std::swap(tex_coords[start], tex_coords[end]);
std::swap((*tex_coords)[start], (*tex_coords)[end]);
if(normals)
std::swap(normals[start], normals[end]);
std::swap((*normals)[start], (*normals)[end]);
start++;
end--;
}
ind += primitives[i];
}
// Define GeoSet
gset = new GeoSet;
gset->setPrimType(GeoSet::TRIANGLE_FAN);
gset->setPrimLengths(primitives);
}
break;
default:
@@ -305,12 +317,14 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
// Add it to the current parent group
Group *top = parse->GetCurrTop();
if (gset)
if (geometry)
{
gset->setCoords(vertices);
gset->setNumPrims(numPrims);
geometry->setVertexArray(vertices);
if (normals)
gset->setNormals(normals);
{
geometry->setNormalArray(normals);
geometry->setNormalBinding(Geometry::BIND_PER_VERTEX);
}
// Note: Should check number of materials first
// Note: Should be combining multiple geosets
ref_ptr<StateSet> sset = 0L;
@@ -321,12 +335,11 @@ void* geomRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
if (tex_coords)
{
gset->setTextureCoords(tex_coords);
gset->setTextureBinding(GeoSet::BIND_PERVERTEX);
geometry->setTexCoordArray( 0, tex_coords);
}
gset->setStateSet(sset.get());
geode->addDrawable(gset);
geometry->setStateSet(sset.get());
geode->addDrawable(geometry);
top->addChild(geode);
}
return (void *) 1;