CRhinoCommand::result CCommandSampleSelectVisibleMeshFaces::RunCommand( const CRhinoCommandContext& context )
{
CRhinoGetObject go;
go.SetCommandPrompt(L"Select mesh");
go.SetGeometryFilter(ON::mesh_object);
go.EnablePreSelect(false);
go.EnableUnselectObjectsOnExit(false);
go.GetObjects(1, 1);
if (go.CommandResult() != CRhinoCommand::success)
return go.CommandResult();
CRhinoView* view = go.View();
if (0 == view)
return CRhinoCommand::failure;
const CRhinoMeshObject* mesh_obj = CRhinoMeshObject::Cast(go.Object(0).Object());
if (0 == mesh_obj)
return CRhinoCommand::failure;
ON_Mesh* mesh = const_cast<ON_Mesh*>(mesh_obj->Mesh());
if (0 == mesh)
return CRhinoCommand::failure;
mesh_obj->Select(false);
context.m_doc.Redraw();
if (!mesh->HasFaceNormals())
mesh->ComputeFaceNormals();
ON_3fVector dir(view->ActiveViewport().VP().CameraZ());
double min_angle = 0.0;
double max_angle = 90.0 * (ON_PI/180);
for (int fi = 0; fi < mesh->m_F.Count(); fi++)
{
const ON_3fVector& norm = mesh->m_FN[fi];
double dot = ON_DotProduct(dir, norm) / (dir.Length() * norm.Length());
double angle = acos(dot);
if (min_angle <= angle && angle <= max_angle)
{
ON_COMPONENT_INDEX ci(ON_COMPONENT_INDEX::mesh_face, fi);
mesh_obj->SelectSubObject(ci, true, true);
}
}
context.m_doc.Redraw();
CRhinoGetString gs;
gs.SetCommandPrompt(L"Press <Enter> to continue");
gs.AcceptNothing();
gs.GetString();
return CRhinoCommand::success;
}
CRhinoCommand::result CCommandSamplePrePostSelect::RunCommand( const CRhinoCommandContext& context )
{
double dValue = m_dValue;
int nValue = m_nValue;
CRhinoGetObject go;
go.SetGeometryFilter( CRhinoGetObject::curve_object );
go.EnableGroupSelect( TRUE );
go.EnableSubObjectSelect( FALSE );
/*int d_option_index =*/ go.AddCommandOptionNumber(
RHCMDOPTNAME(L"Double"), &dValue, L"Double value", FALSE, 1.0, 99.9 );
/*int n_option_index =*/ go.AddCommandOptionInteger(
RHCMDOPTNAME(L"Integer"), &nValue, L"Integer value", 1, 99 );
bool bHavePreselectedObjects = false;
for( ;; )
{
CRhinoGet::result res = go.GetObjects( 1, 0 );
if( res == CRhinoGet::option )
{
go.EnablePreSelect( FALSE );
go.EnableAlreadySelectedObjectSelect( true );
go.EnableClearObjectsOnEntry( false );
go.EnableDeselectAllBeforePostSelect( false );
go.EnableUnselectObjectsOnExit( false );
continue;
}
else if( res != CRhinoGet::object )
return CRhinoCommand::cancel;
if( go.ObjectsWerePreSelected() )
{
bHavePreselectedObjects = true;
go.EnablePreSelect( FALSE );
go.EnableAlreadySelectedObjectSelect( true );
go.EnableClearObjectsOnEntry( false );
go.EnableDeselectAllBeforePostSelect( false );
go.EnableUnselectObjectsOnExit( false );
continue;
}
break;
}
if( bHavePreselectedObjects )
{
// Normally, pre-selected objects will remain selected, when a
// command finishes, and post-selected objects will be unselected.
// This this way of picking, it is possible to have a combination
// of pre-selected and post-selected. So, to make sure everything
// "looks the same", lets unselect everything before finishing
// the command.
for( int i = 0; i < go.ObjectCount(); i++ )
{
const CRhinoObject* object = go.Object(i).Object();
if( 0 != object )
object->Select( false );
}
context.m_doc.Redraw();
}
int object_count = go.ObjectCount();
m_dValue = dValue;
m_nValue = nValue;
RhinoApp().Print( L"Select object count = %d\n", object_count );
RhinoApp().Print( L"Value of double = %f\n", m_dValue );
RhinoApp().Print( L"Value of integer = %d\n", m_nValue );
return CRhinoCommand::success;
}
