CRhinoCommand::result CCommandSampleCageEdit::RunCommand( const CRhinoCommandContext& context )
{
ON_Workspace ws;
CRhinoCommand::result rc = CRhinoCommand::success;
// Get the captive object
CRhinoGetObject go;
go.SetCommandPrompt( L"Select captive surface or polysurface" );
go.SetGeometryFilter( CRhinoGetObject::surface_object | CRhinoGetObject::polysrf_object );
go.GetObjects( 1, 1 );
rc = go.CommandResult();
if( CRhinoCommand::success != rc )
return rc;
const CRhinoObject* captive = go.Object(0).Object();
if( 0 == captive )
return CRhinoCommand::failure;
// Define the control line
ON_Line line;
CArgsRhinoGetLine args;
rc = RhinoGetLine( args, line );
if( CRhinoCommand::success != rc )
return rc;
// Get the curve parameters
int degree = 3;
int cv_count = 4;
for(;;)
{
CRhinoGetOption gl;
gl.SetCommandPrompt( L"NURBS Parameters" );
gl.AcceptNothing();
int d_opt = gl.AddCommandOptionInteger( RHCMDOPTNAME(L"Degree"), °ree, L"Curve degree", 1.0, 100.0 );
int p_opt = gl.AddCommandOptionInteger( RHCMDOPTNAME(L"PointCount"), &cv_count, L"Number of control points", 2.0, 100.0 );
gl.GetOption();
rc = gl.CommandResult();
if( CRhinoCommand::success != rc )
return rc;
if( CRhinoGet::nothing == gl.Result() )
break;
if( cv_count <= degree )
{
if( CRhinoGet::option != gl.Result() )
continue;
const CRhinoCommandOption* opt = go.Option();
if( 0 == opt )
continue;
if( d_opt == opt->m_option_index )
cv_count = degree + 1;
else
degree = cv_count - 1;
}
}
// Set up morph control
ON_MorphControl* control = new ON_MorphControl();
control->m_varient = 1; // 1= curve
// Specify the source line curve
control->m_nurbs_curve0.Create( 3, false, 2, 2 );
control->m_nurbs_curve0.MakeClampedUniformKnotVector();
control->m_nurbs_curve0.SetCV( 0, line.from );
control->m_nurbs_curve0.SetCV( 1, line.to );
// Specify the destination NURBS curve
control->m_nurbs_curve.Create( 3, false, degree + 1, cv_count );
control->m_nurbs_curve.MakeClampedUniformKnotVector();
double* g = ws.GetDoubleMemory( control->m_nurbs_curve.m_cv_count );
control->m_nurbs_curve.GetGrevilleAbcissae( g );
ON_Interval d = control->m_nurbs_curve.Domain();
double s = 0.0;
int i;
for( i = 0; i < control->m_nurbs_curve.m_cv_count; i++ )
{
s = d.NormalizedParameterAt( g[i] );
control->m_nurbs_curve.SetCV( i, line.PointAt(s) );
}
// Make sure domains match
s = line.Length();
if( s > ON_SQRT_EPSILON )
control->m_nurbs_curve0.SetDomain( 0.0, s );
d = control->m_nurbs_curve0.Domain();
control->m_nurbs_curve.SetDomain( d[0], d[1] );
// Create the morph control object
CRhinoMorphControl* control_object = new CRhinoMorphControl();
control_object->SetControl( control );
context.m_doc.AddObject( control_object );
// Set up the capture
RhinoCaptureObject( control_object, const_cast<CRhinoObject*>(captive) );
// Clean up display
context.m_doc.UnselectAll();
// Turn on the control grips
control_object->EnableGrips( true );
context.m_doc.Redraw( CRhinoView::mark_display_hint );
return rc;
}
