void LFrustum::CreateFrustum( const LMatrix4& Projection,
const LMatrix4& ModelView )
{
LMatrix4 ProjModelView = ModelView * Projection;
for ( int i = 0; i != 4; ++i )
{
FPlanes[0][i] = ProjModelView[i][3] + ProjModelView[i][0]; // left
FPlanes[1][i] = ProjModelView[i][3] - ProjModelView[i][0]; // right
FPlanes[2][i] = ProjModelView[i][3] - ProjModelView[i][1]; // top
FPlanes[3][i] = ProjModelView[i][3] + ProjModelView[i][1]; // bottom
FPlanes[4][i] = ProjModelView[i][3] + ProjModelView[i][2]; // near
FPlanes[5][i] = ProjModelView[i][3] - ProjModelView[i][2]; // far
}
for ( int i = 0; i != 6; ++i )
{
LVector3 Vec = FPlanes[i].ToVector3();
float Len = Vec.Length();
if ( Len > Linderdaum::Math::EPSILON ) { FPlanes[i] /= Len; }
}
}
// (Re)generate representing geometry (beads and sticks) for the graph/curve
clGeom* clGraph::CreateGraphGeometry( float BeadRadius, float TubeRadius, float EdgeArrowSize, bool UseCubes, clMaterial* BeadMaterial, clMaterial* StickMaterial, clMaterial* EdgeArrowMaterial )
{
clMesh* Mesh = Env->Resources->CreateMesh();
int VtxMaterialID = Mesh->AddMaterial( BeadMaterial->GetMaterialDesc() );
// 1. points(vertices) are spheres
for ( size_t i = 0 ; i < FVertices.size() ; i++ )
{
// int VtxGeomID = static_cast<int>(i);
clVertexAttribs* VtxVA;
LVector3 BoxMin( -BeadRadius, -BeadRadius, -BeadRadius );
LVector3 BoxMax( +BeadRadius, +BeadRadius, +BeadRadius );
// name it for picking
LString VtxName = LString( "Vertex " ) + LStr::ToStr( i );
if ( UseCubes )
{
FIXME( "hack, resources should also create a VA ? Or it is a geomserv ?" )
// clGeomServ::CreateAxisAlignedBox(BoxMin, BoxMax, false);
VtxVA = Env->Resources->CreateBox( BoxMin, BoxMax )->GetCurrentMesh()->GetRigid( 0 );
}
else
{
// it does not work...
// VtxVA = Env->Resources->CreateSphere();
VtxVA = Env->Resources->CreateBox( BoxMin, BoxMax )->GetCurrentMesh()->GetRigid( 0 );
}
LVector3 VtxPos = FVertices[i];
LMatrix4 VtxTransform = LMatrix4::GetTranslateMatrix( VtxPos );
if ( UseCubes )
{
LQuaternion VtxOrientation = FLocalOrientations[i];
// orient the cube at point, if needed
VtxTransform = ComposeTransformation( VtxPos, LMatrix4( VtxOrientation.ToMatrix3() ) ); // add rotation from LocalOrientation
}
Mesh->AddVertexAttribs( VtxName, VtxVA, VtxTransform, -1, VtxMaterialID );
}
// 2. render arrows for oriented edges
int ArrowMaterialID = -1;
if ( FOriented && EdgeArrowMaterial )
{
ArrowMaterialID = Mesh->AddMaterial( EdgeArrowMaterial->GetMaterialDesc() );
}
// map< pair<int,int> > ProcessedEdges;
int EdgeMaterialID = Mesh->AddMaterial( StickMaterial->GetMaterialDesc() );
// 3. render lines from point to point ("tubes"), avoiding duplicate generation for non-oriented edges
for ( size_t i = 0; i < FEdge0.size() ; i++ )
{
int v1 = FEdge0[i];
int v2 = FEdge1[i];
LVector3 v1pos = FVertices[v1];
LVector3 v2pos = FVertices[v2];
LVector3 Dir = ( v2pos - v1pos );
LVector3 DirN = Dir.GetNormalized();
LVector3 EndPointDir = -Dir.Length() * DirN * ( EdgeArrowSize );
LVector3 Offset = DirN * EdgeArrowSize;
clVertexAttribs* EdgeVA = clGeomServ::CreateTube( 10, v1pos + Offset, Dir - Offset, TubeRadius, false );
// name the edge for picking
LString EdgeName = LString( "Edge " ) + LStr::ToStr( v1 ) + LString( " " ) + LStr::ToStr( v2 );
LMatrix4 EdgeTransform = LMatrix4::Identity();
Mesh->AddVertexAttribs( EdgeName, EdgeVA, EdgeTransform, -1, EdgeMaterialID );
FIXME( "avoid duplicates, use processed edges list" )
// add arrow, if required
if ( FOriented )
{
clVertexAttribs* ArrowVA = clGeomServ::CreateTube( 10, v2pos - Offset, -EndPointDir, TubeRadius * 2.0f , true );
LString ArrowName = LString( "Arrow_" ) + EdgeName;
LMatrix4 ArrowTransform = LMatrix4::Identity();
Mesh->AddVertexAttribs( ArrowName, ArrowVA, ArrowTransform, -1, ArrowMaterialID );
}
}
clGeom* Geom = Env->Resources->CreateGeom();
Geom->SetMesh( Mesh );
return Geom;
}