void Route::RenderSegment( ocpnDC& dc, int xa, int ya, int xb, int yb, ViewPort &VP,
bool bdraw_arrow, int hilite_width )
{
// Get the dc boundary
int sx, sy;
dc.GetSize( &sx, &sy );
// Try to exit early if the segment is nowhere near the screen
wxRect r( 0, 0, sx, sy );
wxRect s( xa, ya, 1, 1 );
wxRect t( xb, yb, 1, 1 );
s.Union( t );
if( !r.Intersects( s ) ) return;
// Clip the line segment to the dc boundary
int x0 = xa;
int y0 = ya;
int x1 = xb;
int y1 = yb;
// If hilite is desired, use a Native Graphics context to render alpha colours
// That is, if wxGraphicsContext is available.....
if( hilite_width ) {
if( Visible == cohen_sutherland_line_clip_i( &x0, &y0, &x1, &y1, 0, sx, 0, sy ) ) {
wxPen psave = dc.GetPen();
wxColour y = GetGlobalColor( _T ( "YELO1" ) );
wxColour hilt( y.Red(), y.Green(), y.Blue(), 128 );
wxPen HiPen( hilt, hilite_width, wxSOLID );
dc.SetPen( HiPen );
dc.StrokeLine( x0, y0, x1, y1 );
dc.SetPen( psave );
dc.StrokeLine( x0, y0, x1, y1 );
}
} else {
if( Visible == cohen_sutherland_line_clip_i( &x0, &y0, &x1, &y1, 0, sx, 0, sy ) )
dc.StrokeLine( x0, y0, x1, y1 );
}
if( bdraw_arrow ) {
// Draw a direction arrow
double theta = atan2( (double) ( yb - ya ), (double) ( xb - xa ) );
theta -= PI / 2;
wxPoint icon[10];
double icon_scale_factor = 100 * VP.view_scale_ppm;
icon_scale_factor = fmin ( icon_scale_factor, 1.5 ); // Sets the max size
icon_scale_factor = fmax ( icon_scale_factor, .10 );
// Get the absolute line length
// and constrain the arrow to be no more than xx% of the line length
double nom_arrow_size = 20.;
double max_arrow_to_leg = .20;
double lpp = sqrt( pow( (double) ( xa - xb ), 2 ) + pow( (double) ( ya - yb ), 2 ) );
double icon_size = icon_scale_factor * nom_arrow_size;
if( icon_size > ( lpp * max_arrow_to_leg ) ) icon_scale_factor = ( lpp * max_arrow_to_leg )
/ nom_arrow_size;
for( int i = 0; i < 7; i++ ) {
int j = i * 2;
double pxa = (double) ( s_arrow_icon[j] );
double pya = (double) ( s_arrow_icon[j + 1] );
pya *= icon_scale_factor;
pxa *= icon_scale_factor;
double px = ( pxa * sin( theta ) ) + ( pya * cos( theta ) );
double py = ( pya * sin( theta ) ) - ( pxa * cos( theta ) );
icon[i].x = (int) ( px ) + xb;
icon[i].y = (int) ( py ) + yb;
}
wxPen savePen = dc.GetPen();
dc.SetPen( *wxTRANSPARENT_PEN );
dc.StrokePolygon( 6, &icon[0], 0, 0 );
dc.SetPen( savePen );
}
}
void RoutePoint::Draw( ocpnDC& dc, wxPoint *rpn )
{
wxPoint r;
wxRect hilitebox;
cc1->GetCanvasPointPix( m_lat, m_lon, &r );
// return the home point in this dc to allow "connect the dots"
if( NULL != rpn ) *rpn = r;
if( !m_bIsVisible ) // pjotrc 2010.02.13, 2011.02.24
return;
// Optimization, especially apparent on tracks in normal cases
if( m_IconName == _T("empty") && !m_bShowName && !m_bPtIsSelected ) return;
wxPen *pen;
if( m_bBlink )
pen = g_pRouteMan->GetActiveRoutePointPen();
else
pen = g_pRouteMan->GetRoutePointPen();
// Substitue icon?
wxBitmap *pbm;
if( ( m_bIsActive ) && ( m_IconName != _T("mob") ) )
pbm = pWayPointMan->GetIconBitmap( _T ( "activepoint" ) );
else
pbm = m_pbmIcon;
wxBitmap *pbms = NULL;
if( g_ChartScaleFactorExp > 1.0){
if(m_IconScaleFactor != g_ChartScaleFactorExp){
wxImage scaled_image = pbm->ConvertToImage();
int new_width = pbm->GetWidth() * g_ChartScaleFactorExp;
int new_height = pbm->GetHeight() * g_ChartScaleFactorExp;
m_ScaledBMP = wxBitmap(scaled_image.Scale(new_width, new_height, wxIMAGE_QUALITY_HIGH));
m_IconScaleFactor = g_ChartScaleFactorExp;
}
if( m_ScaledBMP.IsOk() )
pbm = &m_ScaledBMP;
}
int sx2 = pbm->GetWidth() / 2;
int sy2 = pbm->GetHeight() / 2;
// Calculate the mark drawing extents
wxRect r1( r.x - sx2, r.y - sy2, sx2 * 2, sy2 * 2 ); // the bitmap extents
if( m_bShowName ) {
if( 0 == m_pMarkFont ) {
m_pMarkFont = FontMgr::Get().GetFont( _( "Marks" ) );
m_FontColor = FontMgr::Get().GetFontColor( _( "Marks" ) );
CalculateNameExtents();
}
if( m_pMarkFont ) {
wxRect r2( r.x + m_NameLocationOffsetX, r.y + m_NameLocationOffsetY, m_NameExtents.x,
m_NameExtents.y );
r1.Union( r2 );
}
}
hilitebox = r1;
hilitebox.x -= r.x;
hilitebox.y -= r.y;
float radius;
if( g_btouch ){
hilitebox.Inflate( 20 );
radius = 20.0f;
}
else{
hilitebox.Inflate( 4 );
radius = 4.0f;
}
wxColour hi_colour = pen->GetColour();
unsigned char transparency = 100;
if( m_bIsBeingEdited ){
hi_colour = GetGlobalColor( _T ( "YELO1" ) );
transparency = 150;
}
// Highlite any selected point
if( m_bPtIsSelected || m_bIsBeingEdited) {
AlphaBlending( dc, r.x + hilitebox.x, r.y + hilitebox.y, hilitebox.width, hilitebox.height, radius,
hi_colour, transparency );
}
bool bDrawHL = false;
if( m_bBlink && ( gFrame->nBlinkerTick & 1 ) ) bDrawHL = true;
if( ( !bDrawHL ) && ( NULL != m_pbmIcon ) ) {
dc.DrawBitmap( *pbm, r.x - sx2, r.y - sy2, true );
// on MSW, the dc Bounding box is not updated on DrawBitmap() method.
// Do it explicitely here for all platforms.
dc.CalcBoundingBox( r.x - sx2, r.y - sy2 );
dc.CalcBoundingBox( r.x + sx2, r.y + sy2 );
}
if( m_bShowName ) {
if( m_pMarkFont ) {
dc.SetFont( *m_pMarkFont );
dc.SetTextForeground( m_FontColor );
dc.DrawText( m_MarkName, r.x + m_NameLocationOffsetX, r.y + m_NameLocationOffsetY );
}
}
// Draw waypoint radar rings if activated
if( m_iWaypointRangeRingsNumber && m_bShowWaypointRangeRings ) {
double factor = 1.00;
if( m_iWaypointRangeRingsStepUnits == 1 ) // nautical miles
factor = 1 / 1.852;
factor *= m_fWaypointRangeRingsStep;
double tlat, tlon;
wxPoint r1;
ll_gc_ll( m_lat, m_lon, 0, factor, &tlat, &tlon );
cc1->GetCanvasPointPix( tlat, tlon, &r1 );
double lpp = sqrt( pow( (double) (r.x - r1.x), 2) +
pow( (double) (r.y - r1.y), 2 ) );
int pix_radius = (int) lpp;
wxPen ppPen1( m_wxcWaypointRangeRingsColour, 2 );
wxBrush saveBrush = dc.GetBrush();
wxPen savePen = dc.GetPen();
dc.SetPen( ppPen1 );
dc.SetBrush( wxBrush( m_wxcWaypointRangeRingsColour, wxBRUSHSTYLE_TRANSPARENT ) );
for( int i = 1; i <= m_iWaypointRangeRingsNumber; i++ )
dc.StrokeCircle( r.x, r.y, i * pix_radius );
dc.SetPen( savePen );
dc.SetBrush( saveBrush );
}
// Save the current draw rectangle in the current DC
// This will be useful for fast icon redraws
CurrentRect_in_DC.x = r.x + hilitebox.x;
CurrentRect_in_DC.y = r.y + hilitebox.y;
CurrentRect_in_DC.width = hilitebox.width;
CurrentRect_in_DC.height = hilitebox.height;
if( m_bBlink ) g_blink_rect = CurrentRect_in_DC; // also save for global blinker
delete pbms; // the potentially scaled bitmap
}
void Track::Draw( ocpnDC& dc, ViewPort &VP, const LLBBox &box )
{
std::list< std::list<wxPoint> > pointlists;
GetPointLists(pointlists, VP, box);
if(!pointlists.size())
return;
unsigned short int FromSegNo = 1;
// Establish basic colour
wxColour basic_colour;
if( IsRunning() )
basic_colour = GetGlobalColor( _T ( "URED" ) );
else
basic_colour = GetDimColor(g_colourTrackLineColour);
wxPenStyle style = wxPENSTYLE_SOLID;
int width = g_pRouteMan->GetTrackPen()->GetWidth();
wxColour col;
if( m_style != wxPENSTYLE_INVALID )
style = m_style;
if( m_width != WIDTH_UNDEFINED )
width = m_width;
if( m_Colour == wxEmptyString ) {
col = basic_colour;
} else {
for( unsigned int i = 0; i < sizeof( ::GpxxColorNames ) / sizeof(wxString); i++ ) {
if( m_Colour == ::GpxxColorNames[i] ) {
col = ::GpxxColors[i];
break;
}
}
}
double radius = 0.;
if( g_bHighliteTracks ) {
double radius_meters = 20; //Current_Ch->GetNativeScale() * .0015; // 1.5 mm at original scale
radius = radius_meters * VP.view_scale_ppm;
if(radius < 1.0)
radius = 0;
}
if( dc.GetDC() || radius ) {
dc.SetPen( *wxThePenList->FindOrCreatePen( col, width, style ) );
dc.SetBrush( *wxTheBrushList->FindOrCreateBrush( col, wxBRUSHSTYLE_SOLID ) );
for(std::list< std::list<wxPoint> >::iterator lines = pointlists.begin();
lines != pointlists.end(); lines++) {
// convert from linked list to array
wxPoint *points = new wxPoint[lines->size()];
int i = 0;
for(std::list<wxPoint>::iterator line = lines->begin();
line != lines->end(); line++) {
points[i] = *line;
i++;
}
int hilite_width = radius;
if( hilite_width ) {
wxPen psave = dc.GetPen();
dc.StrokeLines( i, points );
wxColor trackLine_dim_colour = GetDimColor(g_colourTrackLineColour);
wxColour hilt( trackLine_dim_colour.Red(), trackLine_dim_colour.Green(), trackLine_dim_colour.Blue(), 128 );
wxPen HiPen( hilt, hilite_width, wxPENSTYLE_SOLID );
dc.SetPen( HiPen );
dc.StrokeLines( i, points );
dc.SetPen( psave );
} else
dc.StrokeLines( i, points );
delete [] points;
}
}
#ifdef ocpnUSE_GL
else { // opengl version
glColor3ub(col.Red(), col.Green(), col.Blue());
glLineWidth( wxMax( g_GLMinSymbolLineWidth, width ) );
if( g_GLOptions.m_GLLineSmoothing )
glEnable( GL_LINE_SMOOTH );
glEnable( GL_BLEND );
int size = 0;
// convert from linked list to array, allocate array just once
for(std::list< std::list<wxPoint> >::iterator lines = pointlists.begin();
lines != pointlists.end(); lines++)
size = wxMax(size, lines->size());
int *points = new int[2*size];
glVertexPointer(2, GL_INT, 0, points);
glEnableClientState(GL_VERTEX_ARRAY);
for(std::list< std::list<wxPoint> >::iterator lines = pointlists.begin();
lines != pointlists.end(); lines++) {
// convert from linked list to array
int i = 0;
for(std::list<wxPoint>::iterator line = lines->begin();
line != lines->end(); line++) {
points[i+0] = line->x;
points[i+1] = line->y;
i+=2;
}
glDrawArrays(GL_LINE_STRIP, 0, i >> 1);
}
glDisableClientState(GL_VERTEX_ARRAY);
delete [] points;
glDisable( GL_LINE_SMOOTH );
glDisable( GL_BLEND );
}
#endif
if(m_HighlightedTrackPoint >= 0)
TrackPoints[m_HighlightedTrackPoint]->Draw(dc);
}
