/** * @file classpcb.cpp * @brief Member functions of classes used in Pcbnew (see pcbstruct.h) * except for tracks (see class_track.cpp). */ #include #include #include #include #include #include // FILLED #include #include #include #include #include #define ZOOM_FACTOR( x ) ( x * IU_PER_DECIMILS ) #define DMIL_GRID( x ) wxRealPoint( x * IU_PER_DECIMILS,\ x * IU_PER_DECIMILS ) #define MM_GRID( x ) wxRealPoint( x * IU_PER_MM,\ x * IU_PER_MM ) /** Default Pcbnew zoom values. Limited to 19 values to keep a decent size to menus. Roughly a 1.5 progression. The last 2 values are handy when somebody uses a library import of a module (or foreign data) which has a bad coordinate. Also useful in GerbView for this reason. Zoom 5 and 10 can create artefacts when drawing (integer overflow in low level graphic functions ) */ static const double pcbZoomList[] = { #if defined( USE_PCBNEW_NANOMETRES ) ZOOM_FACTOR( 0.1 ), ZOOM_FACTOR( 0.2 ), ZOOM_FACTOR( 0.3 ), #endif ZOOM_FACTOR( 0.5 ), ZOOM_FACTOR( 1.0 ), ZOOM_FACTOR( 1.5 ), ZOOM_FACTOR( 2.0 ), ZOOM_FACTOR( 3.0 ), ZOOM_FACTOR( 4.5 ), ZOOM_FACTOR( 7.0 ), ZOOM_FACTOR( 10.0 ), ZOOM_FACTOR( 15.0 ), ZOOM_FACTOR( 22.0 ), ZOOM_FACTOR( 35.0 ), ZOOM_FACTOR( 50.0 ), ZOOM_FACTOR( 80.0 ), ZOOM_FACTOR( 120.0 ), ZOOM_FACTOR( 200.0 ), ZOOM_FACTOR( 300.0 ), /* The largest distance that wx can support is INT_MAX, since it represents distance often in a wxCoord or wxSize. As a scalar, a distance is always positive. On most machines which run KiCad, int is 32 bits and INT_MAX is 2147483647. The most difficult distance for a virtual (world) cartesian space is the hypotenuse, or diagonal measurement at a 45 degree angle. This puts the most stress on the distance magnitude within the bounded virtual space. So if we allow this distance to be our constraint of <= INT_MAX, this constraint then propagates to the maximum distance in X and in Y that can be supported on each axis. Remember that the hypotenuse of a 1x1 square is sqrt( 1x1 + 1x1 ) = sqrt(2) = 1.41421356. hypotenuse of any square = sqrt(2) * deltaX; Let maximum supported hypotenuse be INT_MAX, then: MAX_AXIS = INT_MAX / sqrt(2) = 2147483647 / 1.41421356 = 1518500251 This maximum distance is imposed by wxWidgets, not by KiCad. The imposition comes in the form of the data structures used in the graphics API at the wxDC level. Obviously when we are not interacting with wx we can use double to compute distances larger than this. For example the computation of the total length of a net, can and should be done in double, since it might actually be longer than a single diagonal line. The next choice is what to use for internal units (IU), sometimes called world units. If nanometers, then the virtual space must be limited to about 1.5 x 1.5 meters square. This is 1518500251 divided by 1e9 nm/meter. The maximum zoom factor then depends on the client window size. If we ask wx to handle something outside INT_MIN to INT_MAX, there are unreported problems in the non-Debug build because wxRound() goes silent. Let: const double MAX_AXIS = 1518500251; Then a maximum zoom factor for a screen of 1920 pixels wide is 1518500251 / 1920 = 790885. The largest ZOOM_FACTOR in above table is ZOOM_FACTOR( 300 ), which computes out to 762000 just below 790885. */ #if !defined( USE_PCBNEW_NANOMETRES ) ZOOM_FACTOR( 500.0 ), ZOOM_FACTOR( 1000.0 ), ZOOM_FACTOR( 2000.0 ) #endif }; // Default grid sizes for PCB editor screens. static GRID_TYPE pcbGridList[] = { // predefined grid list in 0.0001 inches { ID_POPUP_GRID_LEVEL_1000, DMIL_GRID( 1000 ) }, { ID_POPUP_GRID_LEVEL_500, DMIL_GRID( 500 ) }, { ID_POPUP_GRID_LEVEL_250, DMIL_GRID( 250 ) }, { ID_POPUP_GRID_LEVEL_200, DMIL_GRID( 200 ) }, { ID_POPUP_GRID_LEVEL_100, DMIL_GRID( 100 ) }, { ID_POPUP_GRID_LEVEL_50, DMIL_GRID( 50 ) }, { ID_POPUP_GRID_LEVEL_25, DMIL_GRID( 25 ) }, { ID_POPUP_GRID_LEVEL_20, DMIL_GRID( 20 ) }, { ID_POPUP_GRID_LEVEL_10, DMIL_GRID( 10 ) }, { ID_POPUP_GRID_LEVEL_5, DMIL_GRID( 5 ) }, { ID_POPUP_GRID_LEVEL_2, DMIL_GRID( 2 ) }, { ID_POPUP_GRID_LEVEL_1, DMIL_GRID( 1 ) }, // predefined grid list in mm { ID_POPUP_GRID_LEVEL_5MM, MM_GRID( 5.0 ) }, { ID_POPUP_GRID_LEVEL_2_5MM, MM_GRID( 2.5 ) }, { ID_POPUP_GRID_LEVEL_1MM, MM_GRID( 1.0 ) }, { ID_POPUP_GRID_LEVEL_0_5MM, MM_GRID( 0.5 ) }, { ID_POPUP_GRID_LEVEL_0_25MM, MM_GRID( 0.25 ) }, { ID_POPUP_GRID_LEVEL_0_2MM, MM_GRID( 0.2 ) }, { ID_POPUP_GRID_LEVEL_0_1MM, MM_GRID( 0.1 ) }, { ID_POPUP_GRID_LEVEL_0_0_5MM, MM_GRID( 0.05 ) }, { ID_POPUP_GRID_LEVEL_0_0_25MM, MM_GRID( 0.025 ) }, { ID_POPUP_GRID_LEVEL_0_0_1MM, MM_GRID( 0.01 ) } }; PCB_SCREEN::PCB_SCREEN( const wxSize& aPageSizeIU ) : BASE_SCREEN( SCREEN_T ) { // D(wxSize displayz = wxGetDisplaySize();) // D(printf( "displayz x:%d y:%d lastZoomFactor: %.16g\n", displayz.x, displayz.y, pcbZoomList[DIM(pcbZoomList)-1] );) for( unsigned i = 0; i < DIM( pcbZoomList ); ++i ) m_ZoomList.push_back( pcbZoomList[i] ); for( unsigned i = 0; i < DIM( pcbGridList ); ++i ) AddGrid( pcbGridList[i] ); // Set the working grid size to a reasonable value (in 1/10000 inch) SetGrid( DMIL_GRID( 500 ) ); m_Active_Layer = LAYER_N_BACK; // default active layer = bottom layer m_Route_Layer_TOP = LAYER_N_FRONT; // default layers pair for vias (bottom to top) m_Route_Layer_BOTTOM = LAYER_N_BACK; SetZoom( ZOOM_FACTOR( 120 ) ); // a default value for zoom InitDataPoints( aPageSizeIU ); } PCB_SCREEN::~PCB_SCREEN() { ClearUndoRedoList(); } int PCB_SCREEN::MilsToIuScalar() { return (int)IU_PER_MILS; } DISPLAY_OPTIONS::DISPLAY_OPTIONS() { DisplayPadFill = FILLED; DisplayViaFill = FILLED; DisplayPadNum = true; DisplayPadIsol = true; DisplayModEdge = true; DisplayModText = true; DisplayPcbTrackFill = true; // false = sketch , true = filled ShowTrackClearanceMode = SHOW_CLEARANCE_NEW_TRACKS_AND_VIA_AREAS; m_DisplayViaMode = VIA_HOLE_NOT_SHOW; DisplayPolarCood = false; /* false = display absolute coordinates, * true = display polar cordinates */ DisplayZonesMode = 0; /* 0 = Show filled areas outlines in zones, * 1 = do not show filled areas outlines * 2 = show outlines of filled areas */ DisplayNetNamesMode = 3; /* 0 do not show netnames, * 1 show netnames on pads * 2 show netnames on tracks * 3 show netnames on tracks and pads */ DisplayDrawItems = true; ContrastModeDisplay = false; }