void dxRenderSphere(Sphere* sphere, const Color* color, Matrix* ltm)
{
Vector circleVertex[SPHERE_DETAILS +1];
Line circleLines[SPHERE_DETAILS];
// generate circle in XY plane
int i;
for( i=0; i<SPHERE_DETAILS + 1; i++)
{
circleVertex[i].x = cos(i / (SPHERE_DETAILS / 2.0f) * D3DX_PI) * sphere->radius;
circleVertex[i].y = sin(i / (SPHERE_DETAILS / 2.0f) * D3DX_PI) * sphere->radius;
circleVertex[i].z = 0;
}
for( i=0; i<SPHERE_DETAILS; i++ )
{
circleLines[i].start = circleVertex[i], circleLines[i].end = circleVertex[i+1];
}
Matrix m;
Vector temp( 1,1,0 );
Vector scale, translation;
float transf;
for( i=0; i<SPHERE_BELTS; i++ )
{
D3DXMatrixIdentity( &m );
dxRotate( &m, &oY, 180.0f / SPHERE_BELTS * i );
dxTranslate( &m, &sphere->center );
dxRenderLines( SPHERE_DETAILS, circleLines, color, &m );
D3DXMatrixIdentity( &m );
transf = 1.0f/(SPHERE_BELTS)*i;
scale = temp * sin( acos( transf ) );
dxScale( &m, &scale );
translation = Vector( 0,0, transf * sphere->radius );
dxTranslate( &m, &translation );
dxRotate( &m, &oX, 90 );
dxTranslate( &m, &sphere->center );
dxRenderLines( SPHERE_DETAILS, circleLines, color, &m );
D3DXMatrixIdentity( &m );
dxScale( &m, &scale );
translation = Vector( 0,0, -transf * sphere->radius );
dxTranslate( &m, &translation );
dxRotate( &m, &oX, 90 );
dxTranslate( &m, &sphere->center );
dxRenderLines( SPHERE_DETAILS, circleLines, color, &m );
}
}
void Frame::translate(const Vector3f& translation)
{
dxTranslate( &TransformationMatrix, &wrap( translation ) );
dirty();
}
