void TorusGenerator::AddToTriangleBuffer(TriangleBuffer& Buffer) const
{
Buffer.RebaseOffset();
Buffer.EstimateVertexCount( ( this->NumPoloidalSeg + 1 ) * ( this->NumToroidalSeg + 1 ) );
Buffer.EstimateIndexCount( ( this->NumPoloidalSeg ) * ( this->NumToroidalSeg + 1 ) * 6 );
Real deltaSection = ( MathTools::GetTwoPi() / this->NumToroidalSeg );
Real deltaCircle = ( MathTools::GetTwoPi() / this->NumPoloidalSeg );
Integer Offset = 0;
for( Whole i = 0 ; i <= this->NumPoloidalSeg ; i++ )
{
for( Whole j = 0 ; j<= this->NumToroidalSeg ; j++ )
{
Vector3 c0( this->TorusPoloidalRadius, 0.0, 0.0 );
Vector3 v0( this->TorusPoloidalRadius + this->TorusToroidalRadius * cosf( j * deltaSection ), this->TorusToroidalRadius * sinf( j * deltaSection ), 0.0 );
Quaternion q( i * deltaCircle, Vector3::Unit_Y() );
Vector3 v = q * v0;
Vector3 c = q * c0;
this->AddPoint( Buffer, v,
( v - c ).GetNormal(),
Vector2( i / (Real)this->NumPoloidalSeg, j / (Real)this->NumToroidalSeg ) );
if( i != this->NumPoloidalSeg ) {
Buffer.AddIndex( Offset + this->NumToroidalSeg + 1 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + this->NumToroidalSeg );
Buffer.AddIndex( Offset + this->NumToroidalSeg + 1 );
Buffer.AddIndex( Offset + 1 );
Buffer.AddIndex( Offset );
}
Offset++;
}
}
}
void TubeGenerator::AddToTriangleBuffer(TriangleBuffer& Buffer) const
{
Buffer.RebaseOffset();
Buffer.EstimateVertexCount( ( this->NumSegHeight + 1 ) * ( this->NumSegCircle + 1 ) * 2 + ( this->NumSegCircle + 1 ) * 4 );
Buffer.EstimateIndexCount( 6 * ( this->NumSegCircle + 1 ) * this->NumSegHeight * 2 + 6 * this->NumSegCircle * 2 );
Real deltaAngle = ( MathTools::GetTwoPi() / this->NumSegCircle );
Real deltaHeight = this->TubeHeight / (Real)this->NumSegHeight;
int Offset = 0;
for( Whole i = 0 ; i <= this->NumSegHeight ; ++i )
{
for( Whole j = 0 ; j <= this->NumSegCircle ; ++j )
{
Real x0 = this->TubeOuterRadius * cosf( j * deltaAngle );
Real z0 = this->TubeOuterRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, i * deltaHeight, z0 ),
Vector3( x0, 0, z0 ).GetNormal(),
Vector2( j / (Real)this->NumSegCircle, i / (Real)this->NumSegHeight ) );
if( i != this->NumSegHeight ) {
Buffer.AddIndex( Offset + this->NumSegCircle + 1 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + this->NumSegCircle );
Buffer.AddIndex( Offset + this->NumSegCircle + 1 );
Buffer.AddIndex( Offset + 1 );
Buffer.AddIndex( Offset );
}
Offset++;
}
}
for( Whole i = 0 ; i <= this->NumSegHeight ; ++i )
{
for( Whole j = 0 ; j<= this->NumSegCircle ; ++j )
{
Real x0 = this->TubeInnerRadius * cosf( j * deltaAngle );
Real z0 = this->TubeInnerRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, i * deltaHeight, z0 ),
-Vector3( x0, 0, z0 ).GetNormal(),
Vector2( j / (Real)this->NumSegCircle, i / (Real)this->NumSegHeight ) );
if( i != this->NumSegHeight ) {
Buffer.AddIndex( Offset + this->NumSegCircle + 1 );
Buffer.AddIndex( Offset + this->NumSegCircle );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + this->NumSegCircle + 1 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 1);
}
Offset++;
}
}
//low cap
for( Whole j = 0 ; j <= this->NumSegCircle ; ++j )
{
Real x0 = this->TubeInnerRadius * cosf( j * deltaAngle );
Real z0 = this->TubeInnerRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, 0.0f, z0 ),
Vector3::Neg_Unit_Y(),
Vector2( j / (Real)this->NumSegCircle, 1. ) );
x0 = this->TubeOuterRadius * cosf( j * deltaAngle );
z0 = this->TubeOuterRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, 0.0f, z0 ),
Vector3::Neg_Unit_Y(),
Vector2( j / (Real)this->NumSegCircle, 0. ) );
if( j != this->NumSegCircle ) {
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 1 );
Buffer.AddIndex( Offset + 3 );
Buffer.AddIndex( Offset + 2 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 3 );
}
Offset += 2;
}
//high cap
for( Whole j = 0 ; j <= this->NumSegCircle ; ++j )
{
Real x0 = this->TubeInnerRadius * cosf( j * deltaAngle );
Real z0 = this->TubeInnerRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, this->TubeHeight, z0 ),
Vector3::Unit_Y(),
Vector2( j / (Real)this->NumSegCircle, 0. ) );
x0 = this->TubeOuterRadius * cosf( j * deltaAngle );
z0 = this->TubeOuterRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3( x0, this->TubeHeight, z0 ),
Vector3::Unit_Y(),
Vector2( j / (Real)this->NumSegCircle, 1. ) );
if( j != this->NumSegCircle ) {
Buffer.AddIndex( Offset + 1 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 3 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 2 );
Buffer.AddIndex( Offset + 3 );
}
Offset += 2;
}
}
void ConeGenerator::AddToTriangleBuffer(TriangleBuffer& Buffer) const
{
Buffer.RebaseOffset();
Buffer.EstimateVertexCount( ( this->NumSegHeight + 1 ) * ( this->NumSegCircle + 1 ) + this->NumSegCircle + 2 );
Buffer.EstimateIndexCount( this->NumSegHeight * this->NumSegCircle * 6 + 3 * this->NumSegCircle );
Real deltaAngle = ( MathTools::GetTwoPi() / this->NumSegCircle );
Real deltaHeight = this->ConeHeight / (Real)this->NumSegHeight;
Integer Offset = 0;
Vector3 refNormal = Vector3( this->ConeRadius, this->ConeHeight, 0.f ).GetNormal();
Quaternion q;
for( Whole i = 0 ; i <= this->NumSegHeight ; i++ )
{
Real r0 = this->ConeRadius * ( 1 - i / (Real)this->NumSegHeight );
for( Whole j = 0; j <= this->NumSegCircle ; j++ )
{
Real x0 = r0 * cosf( j * deltaAngle );
Real z0 = r0 * sinf( j * deltaAngle );
q.SetFromAxisAngle( -deltaAngle * j, Vector3::Unit_Y() );
this->AddPoint(Buffer, Vector3( x0, i * deltaHeight, z0 ),
q * refNormal,
Vector2( j / (Real)this->NumSegCircle, i / (Real)this->NumSegHeight ) );
if( i != this->NumSegHeight && j != this->NumSegCircle ) {
Buffer.AddIndex( Offset + this->NumSegCircle + 2 );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + this->NumSegCircle + 1 );
Buffer.AddIndex( Offset + this->NumSegCircle + 2 );
Buffer.AddIndex( Offset + 1 );
Buffer.AddIndex( Offset );
}
Offset++;
}
}
//low cap
Integer CenterIndex = Offset;
this->AddPoint(Buffer, Vector3(0.0,0.0,0.0),
Vector3::Neg_Unit_Y(),
Vector2(0.0,1.0) );
Offset++;
for( Whole j = 0 ; j <= this->NumSegCircle ; j++ )
{
Real x0 = this->ConeRadius * cosf( j * deltaAngle );
Real z0 = this->ConeRadius * sinf( j * deltaAngle );
this->AddPoint(Buffer, Vector3(x0, 0.0f, z0),
Vector3::Neg_Unit_Y(),
Vector2( j / (Real)this->NumSegCircle, 0.0 ) );
if( j != this->NumSegCircle ) {
Buffer.AddIndex( CenterIndex );
Buffer.AddIndex( Offset );
Buffer.AddIndex( Offset + 1 );
}
Offset++;
}
}
