Commit e29a829a authored by Maciej Suminski's avatar Maciej Suminski
Browse files

Added implementation of level of details per layer and item type pairs basis... 

Added implementation of level of details per layer and item type pairs basis (items on every layer have a possibility to define the minimum VIEW scale to be shown).
parent 9c4e0237

common/view/view.cpp

+4 −2
Original line number Original line Diff line number Diff line
@@ -459,7 +459,8 @@ struct VIEW::drawItem 
            // Draw using cached information or create one

            // Draw using cached information or create one

            int group = aItem->getGroup( currentLayer->id );

            int group = aItem->getGroup( currentLayer->id );





            if( group >= 0 && aItem->ViewIsVisible() )

            if( group >= 0 && aItem->ViewIsVisible() &&

                aItem->ViewGetLOD( currentLayer->id ) < view->m_scale )

            {

            {

                gal->DrawGroup( group );

                gal->DrawGroup( group );

            }

            }
@@ -471,7 +472,8 @@ struct VIEW::drawItem 
                gal->EndGroup();

                gal->EndGroup();

            }

            }

        }

        }

        else if( aItem->ViewIsVisible() )

        else if( aItem->ViewIsVisible() &&

                 aItem->ViewGetLOD( currentLayer->id ) < view->m_scale )

        {

        {

            // Immediate mode

            // Immediate mode

            view->m_painter->Draw( aItem, currentLayer->id );

            view->m_painter->Draw( aItem, currentLayer->id );

include/view/view_item.h

+11 −0
Original line number Original line Diff line number Diff line
@@ -227,6 +227,17 @@ public: 
        return m_viewVisible;

        return m_viewVisible;

    }

    }





    /**

     * Function ViewGetLOD()

     * Returns the level of detail of the item. A level of detail is the minimal VIEW scale that

     * is sufficient for an item to be shown on a given layer.

     */

    virtual unsigned int ViewGetLOD( int aLayer ) const

    {

        // By default always show the item

        return 0;

    }



    /**

    /**

     * Function ViewUpdate()

     * Function ViewUpdate()

     * For dynamic VIEWs, informs the associated VIEW that the graphical representation of

     * For dynamic VIEWs, informs the associated VIEW that the graphical representation of