C++ (Cpp) Curve::GetIndexForControlPoint Examples

Example #1

File: CurveEditTool.cpp Project: euler0/Helium

void CurveEditTool::KeyPress( const KeyboardInput& e )
{
    if ( !m_Scene->IsEditable() )
    {
        return;
    }

    int32_t keyCode = e.GetKeyCode();

    if ( keyCode == KeyCodes::Left || keyCode == KeyCodes::Up || keyCode == KeyCodes::Right || keyCode == KeyCodes::Down )
    {
        OS_SceneNodeDumbPtr selection = m_Scene->GetSelection().GetItems();

        if ( selection.Empty() )
        {
            return;
        }

        CurveControlPoint* point = Reflect::SafeCast<CurveControlPoint>( selection.Front() );

        if ( !point )
        {
            return;
        }

        Curve* curve = Reflect::SafeCast<Curve>( point->GetParent() );

        if ( !curve )
        {
            return;
        }

        int32_t index =  curve->GetIndexForControlPoint( point );

        if ( index == -1 )
        {
            return;
        }

        uint32_t countControlPoints = curve->GetNumberControlPoints();
        if ( keyCode == KeyCodes::Left || keyCode == KeyCodes::Down )
        {
            index--;
            index += countControlPoints;
            index %= countControlPoints;
        }
        else if ( keyCode == KeyCodes::Right || keyCode == KeyCodes::Up ) 
        {
            index++;
            index %= countControlPoints;
        }

        point = curve->GetControlPointByIndex( index );

        selection.Clear();
        selection.Append( point );
        m_Scene->GetSelection().SetItems( selection );
    }

    Base::KeyPress( e );
}