FGFS-4.1/OpenSceneGraph
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Replaced old slow path deprecated_osg::Geometry code

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This commit is contained in:
Robert Osfield 2016-06-17 15:39:19 +01:00
parent a8e4df5611
commit 5dcea9eb21
1 changed files with 56 additions and 38 deletions
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94
examples/osgocclusionquery/osgocclusionquery.cpp
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@ -561,15 +561,17 @@ createBox()
osg::ref_ptr<osg::Geode> box = new osg::Geode;
osg::StateSet* state = box->getOrCreateStateSet();
osg::PolygonMode* pm = new osg::PolygonMode(
osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::FILL );
state->setAttributeAndModes( pm,
osg::StateAttribute::ON | osg::StateAttribute::PROTECTED );
osg::ref_ptr<deprecated_osg::Geometry> geom = new deprecated_osg::Geometry;
osg::PolygonMode* pm = new osg::PolygonMode( osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::FILL );
state->setAttributeAndModes( pm, osg::StateAttribute::ON | osg::StateAttribute::PROTECTED );
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
osg::ref_ptr<osg::Vec3Array> v = new osg::Vec3Array;
geom->setVertexArray( v.get() );
osg::ref_ptr<osg::Vec3Array> n = new osg::Vec3Array;
geom->setNormalArray( n.get(), osg::Array::BIND_PER_VERTEX );
{
const float x( 0.f );
const float y( 0.f );
@ -581,40 +583,56 @@ createBox()
v->push_back( osg::Vec3( x-r, y+r, z+r ) );
v->push_back( osg::Vec3( x-r, y+r, z-r ) );
n->push_back( osg::Vec3( -1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( -1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( -1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( -1.f, 0.f, 0.f ) );
v->push_back( osg::Vec3( x+r, y-r, z+r ) ); //right +X
v->push_back( osg::Vec3( x+r, y-r, z-r ) );
v->push_back( osg::Vec3( x+r, y+r, z-r ) );
v->push_back( osg::Vec3( x+r, y+r, z+r ) );
n->push_back( osg::Vec3( 1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( 1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( 1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( 1.f, 0.f, 0.f ) );
v->push_back( osg::Vec3( x-r, y-r, z-r ) ); // bottom -Z
v->push_back( osg::Vec3( x-r, y+r, z-r ) );
v->push_back( osg::Vec3( x+r, y+r, z-r ) );
v->push_back( osg::Vec3( x+r, y-r, z-r ) );
n->push_back( osg::Vec3( 0.f, 0.f, -1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, -1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, -1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, -1.f ) );
v->push_back( osg::Vec3( x-r, y-r, z+r ) ); // top +Z
v->push_back( osg::Vec3( x+r, y-r, z+r ) );
v->push_back( osg::Vec3( x+r, y+r, z+r ) );
v->push_back( osg::Vec3( x-r, y+r, z+r ) );
n->push_back( osg::Vec3( 0.f, 0.f, 1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, 1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, 1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, 1.f ) );
v->push_back( osg::Vec3( x-r, y+r, z-r ) ); // back +Y
v->push_back( osg::Vec3( x-r, y+r, z+r ) );
v->push_back( osg::Vec3( x+r, y+r, z+r ) );
v->push_back( osg::Vec3( x+r, y+r, z-r ) );
n->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
n->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
n->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
n->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
}
osg::ref_ptr<osg::Vec4Array> c = new osg::Vec4Array;
geom->setColorArray( c.get() );
geom->setColorBinding( deprecated_osg::Geometry::BIND_OVERALL );
c->push_back( osg::Vec4( 0.f, 1.f, 1.f, 1.f ) );
geom->setColorArray( c.get(), osg::Array::BIND_OVERALL );
osg::ref_ptr<osg::Vec3Array> n = new osg::Vec3Array;
geom->setNormalArray( n.get() );
geom->setNormalBinding( deprecated_osg::Geometry::BIND_PER_PRIMITIVE );
n->push_back( osg::Vec3( -1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( 1.f, 0.f, 0.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, -1.f ) );
n->push_back( osg::Vec3( 0.f, 0.f, 1.f ) );
n->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
c->push_back( osg::Vec4( 0.f, 1.f, 1.f, 1.f ) );
geom->addPrimitiveSet( new osg::DrawArrays( GL_QUADS, 0, 20 ) );
box->addDrawable( geom.get() );
@ -630,32 +648,37 @@ createBox()
// * No vertex sharing
// * Draw the triangles as wireframe
osg::ref_ptr<osg::Node>
createRandomTriangles( unsigned int num )
createRandomTriangles( unsigned int numTriangles )
{
unsigned int numVertices = numTriangles*3;
osg::ref_ptr<osg::Geode> tris = new osg::Geode;
osg::StateSet* ss = tris->getOrCreateStateSet();
// Force wireframe. Many gfx cards handle this poorly.
osg::PolygonMode* pm = new osg::PolygonMode(
osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE );
ss->setAttributeAndModes( pm, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF |
osg::StateAttribute::PROTECTED);
osg::PolygonMode* pm = new osg::PolygonMode( osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE );
ss->setAttributeAndModes( pm, osg::StateAttribute::ON | osg::StateAttribute::PROTECTED);
ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED);
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
osg::ref_ptr<deprecated_osg::Geometry> geom = new deprecated_osg::Geometry;
// Disable display lists to decrease performance.
geom->setUseDisplayList( false );
osg::ref_ptr<osg::Vec3Array> v = new osg::Vec3Array;
geom->setVertexArray( v.get() );
v->resize( num*3 );
v->resize( numVertices );
osg::ref_ptr<osg::Vec4Array> c = new osg::Vec4Array;
geom->setColorArray( c.get(), osg::Array::BIND_PER_VERTEX);
c->resize( numVertices );
unsigned int i;
srand( 0 );
#define RAND_NEG1_TO_1 ( ((rand()%20)-10)*.1 )
for (i=0; i<num; i++)
#define RAND_0_TO_1 ( (rand()%10)*.1 )
for (i=0; i<numTriangles; i++)
{
osg::Vec3& v0 = (*v)[ i*3+0 ];
osg::Vec3& v1 = (*v)[ i*3+1 ];
@ -663,22 +686,17 @@ createRandomTriangles( unsigned int num )
v0 = osg::Vec3( RAND_NEG1_TO_1, RAND_NEG1_TO_1, RAND_NEG1_TO_1 );
v1 = osg::Vec3( RAND_NEG1_TO_1, RAND_NEG1_TO_1, RAND_NEG1_TO_1 );
v2 = osg::Vec3( RAND_NEG1_TO_1, RAND_NEG1_TO_1, RAND_NEG1_TO_1 );
}
osg::ref_ptr<osg::Vec4Array> c = new osg::Vec4Array;
geom->setColorArray( c.get() );
// Bind per primitive to force slow glBegin/glEnd path.
geom->setColorBinding( deprecated_osg::Geometry::BIND_PER_PRIMITIVE );
c->resize( num );
#define RAND_0_TO_1 ( (rand()%10)*.1 )
for (i=0; i<num; i++)
{
osg::Vec4& c0 = (*c)[ i ];
osg::Vec4& c0 = (*c)[ i*3+0 ];
osg::Vec4& c1 = (*c)[ i*3+1 ];
osg::Vec4& c2 = (*c)[ i*3+2 ];
c0 = osg::Vec4( RAND_0_TO_1, RAND_0_TO_1, RAND_0_TO_1, 1. );
c1 = c0;
c2 = c0;
}
geom->addPrimitiveSet( new osg::DrawArrays( GL_TRIANGLES, 0, num*3 ) );
geom->addPrimitiveSet( new osg::DrawArrays( GL_TRIANGLES, 0, numVertices ) );
tris->addDrawable( geom.get() );
return tris.get();