Added traffic lines arrows

gpxsee.pro

@@ -29,6 +29,7 @@ HEADERS += src/common/config.h \
     src/GUI/pluginparameters.h \
     src/common/garmin.h \
     src/common/coordinates.h \
+    src/common/linec.h \
     src/common/range.h \
     src/common/rectc.h \
     src/common/textcodec.h \

src/common/linec.h

@@ -0,0 +1,25 @@
+#ifndef LINEC_H
+#define LINEC_H
+
+#include "coordinates.h"
+
+class LineC
+{
+public:
+	LineC(const Coordinates &c1, const Coordinates &c2) : _c1(c1), _c2(c2) {}
+
+	const Coordinates &c1() const {return _c1;}
+	const Coordinates &c2() const {return _c2;}
+
+	Coordinates pointAt(double t) const
+	{
+		return Coordinates(
+		  _c1.lon() + (_c2.lon() - _c1.lon()) * t,
+		  _c1.lat() + (_c2.lat() - _c1.lat()) * t);
+	}
+
+private:
+	Coordinates _c1, _c2;
+};
+
+#endif // LINEC_H

src/map/ENC/attributes.h

@@ -12,6 +12,7 @@
 #define DRVAL1 87
 #define ELEVAT 90
 #define OBJNAM 116
+#define ORIENT 117
 #define RESTRN 131
 #define VALDCO 174
 #define WATLEV 187

src/map/ENC/mapdata.cpp

@@ -479,6 +479,9 @@ MapData::Attr MapData::polyAttr(const ISO8211::Record &r, uint OBJL)
 		else if (OBJL == RESARE && key == RESTRN) {
 			if (av.at(1).toString().toUInt() == 1)
 				subtype = 2;
+		} else if (OBJL == TSSLPT && key == ORIENT) {
+			double angle = av.at(1).toString().toDouble();
+			subtype = (uint)(angle * 10);
 		}
 	}
 

src/map/ENC/objects.h

@@ -43,6 +43,7 @@
 #define PILPNT 90
 #define PIPSOL 94
 #define PONTON 95
+#define PRCARE 96
 #define RAILWY 106
 #define RECTRC 109
 #define RESARE 112
@@ -53,6 +54,7 @@
 #define SOUNDG 129
 #define TSELNE 145
 #define TSSBND 146
+#define TSSLPT 148
 #define TSEZNE 150
 #define UWTROC 153
 #define UNSARE 154

src/map/ENC/rastertile.cpp

@@ -1,4 +1,6 @@
+#include <QtMath>
 #include <QPainter>
+#include "common/linec.h"
 #include "map/bitmapline.h"
 #include "map/textpointitem.h"
 #include "map/textpathitem.h"
@@ -8,9 +10,12 @@
 using namespace ENC;
 
 #define ICON_PADDING 2
+#define ARROW_SIZE 0.005
 
 #define ECDIS(x) (((x)>TYPE(17000))?((x)-TYPE(17000)):(x))
 
+const float C1 = 0.866025f; /* sqrt(3)/2 */
+
 static const QColor haloColor(Qt::white);
 
 static struct {
@@ -51,6 +56,36 @@ static const Style& style()
 	return s;
 }
 
+static double area(const QVector<Coordinates> &polygon)
+{
+	double area = 0;
+
+	for (int i = 0; i < polygon.size(); i++) {
+		int j = (i + 1) % polygon.size();
+		area += polygon.at(i).lon() * polygon.at(j).lat();
+		area -= polygon.at(i).lat() * polygon.at(j).lon();
+	}
+	area /= 2.0;
+
+	return area;
+}
+
+static Coordinates centroid(const QVector<Coordinates> &polygon)
+{
+	double cx = 0, cy = 0;
+	double factor = 1.0 / (6.0 * area(polygon));
+
+	for (int i = 0; i < polygon.size(); i++) {
+		int j = (i + 1) % polygon.size();
+		qreal f = (polygon.at(i).lon() * polygon.at(j).lat()
+		  - polygon.at(j).lon() * polygon.at(i).lat());
+		cx += (polygon.at(i).lon() + polygon.at(j).lon()) * f;
+		cy += (polygon.at(i).lat() + polygon.at(j).lat()) * f;
+	}
+
+	return Coordinates(cx * factor, cy * factor);
+}
+
 QPainterPath RasterTile::painterPath(const Polygon &polygon) const
 {
 	QPainterPath path;
@@ -77,6 +112,48 @@ QPolygonF RasterTile::polyline(const QVector<Coordinates> &path) const
 	return polygon;
 }
 
+QPolygonF RasterTile::arrow(const Coordinates &c, qreal angle) const
+{
+	Coordinates t[3], r[4];
+	QPolygonF polygon;
+
+	t[0] = c;
+	t[1] = Coordinates(t[0].lon() - qCos(angle - M_PI/3) * ARROW_SIZE,
+	  t[0].lat() - qSin(angle - M_PI/3) * ARROW_SIZE);
+	t[2] = Coordinates(t[0].lon() - qCos(angle - M_PI + M_PI/3) * ARROW_SIZE,
+	  t[0].lat() - qSin(angle - M_PI + M_PI/3) * ARROW_SIZE);
+
+	LineC l(t[1], t[2]);
+	r[0] = l.pointAt(0.25);
+	r[1] = l.pointAt(0.75);
+	r[2] = Coordinates(r[0].lon() - C1 * ARROW_SIZE * qCos(angle - M_PI/2),
+	  r[0].lat() - C1 * ARROW_SIZE * qSin(angle - M_PI/2));
+	r[3] = Coordinates(r[1].lon() - C1 * ARROW_SIZE * qCos(angle - M_PI/2),
+	  r[1].lat() - C1 * ARROW_SIZE * qSin(angle - M_PI/2));
+
+	polygon << ll2xy(t[0]) << ll2xy(t[2]) << ll2xy(r[1]) << ll2xy(r[3])
+	  << ll2xy(r[2]) << ll2xy(r[0]) << ll2xy(t[1]);
+
+	return polygon;
+}
+
+void RasterTile::drawArrows(QPainter *painter)
+{
+	painter->setPen(QPen(QColor("#eb49eb"), 1));
+	painter->setBrush(QBrush("#80eb49eb"));
+
+	for (int i = 0; i < _polygons.size(); i++) {
+		const MapData::Poly *poly = _polygons.at(i);
+
+		if (poly->type()>>16 == TSSLPT) {
+			qreal angle = (poly->type() & 0xFFFF) / 10.0;
+			QPolygonF polygon(arrow(centroid(poly->path().first()),
+			  deg2rad(180 - angle)));
+			painter->drawPolygon(polygon);
+		}
+	}
+}
+
 void RasterTile::drawPolygons(QPainter *painter)
 {
 	const Style &s = style();
@@ -198,6 +275,7 @@ void RasterTile::render()
 
 	drawPolygons(&painter);
 	drawLines(&painter);
+	drawArrows(&painter);
 
 	drawTextItems(&painter, textItems);
 

src/map/ENC/rastertile.h

@@ -32,10 +32,12 @@ private:
 	  {return _transform.proj2img(_proj.ll2xy(c));}
 	QPainterPath painterPath(const Polygon &polygon) const;
 	QPolygonF polyline(const QVector<Coordinates> &path) const;
+	QPolygonF arrow(const Coordinates &c, qreal angle) const;
 	void processPoints(QList<TextItem*> &textItems);
 	void processLines(QList<TextItem*> &textItems);
 	void drawBitmapPath(QPainter *painter, const QImage &img,
 	  const Polygon &polygon);
+	void drawArrows(QPainter *painter);
 	void drawPolygons(QPainter *painter);
 	void drawLines(QPainter *painter);
 	void drawTextItems(QPainter *painter, const QList<TextItem*> &textItems);

src/map/ENC/style.cpp

@@ -52,9 +52,10 @@ void Style::defaultPolygonStyle()
 	_polygons[TYPE(UNSARE)] = Polygon(QBrush("#999999"));
 	_polygons[SUBTYPE(RESARE, 9)] = Polygon(QBrush(QColor("#ff0000"),
 	  Qt::BDiagPattern));
-
 	_polygons[SUBTYPE(RESARE, 2)] = Polygon(QImage(":/marine/noanchor-line.png"));
 	_polygons[SUBTYPE(ACHARE, 1)] = Polygon(QImage(":/marine/anchor-line.png"));
+	_polygons[TYPE(PRCARE)] = Polygon(QBrush(QColor("#eb49eb"),
+	  Qt::BDiagPattern));
 
 	_drawOrder
 	  << TYPE(M_COVR) << TYPE(LNDARE) << SUBTYPE(DEPARE, 0)
@@ -64,7 +65,8 @@ void Style::defaultPolygonStyle()
 	  << TYPE(RIVERS) << TYPE(DRGARE) << TYPE(FAIRWY) << TYPE(BUAARE)
 	  << TYPE(BUISGL) << TYPE(AIRARE) << TYPE(BRIDGE) << TYPE(SLCONS)
 	  << TYPE(PONTON) << TYPE(DMPGRD) << TYPE(TSEZNE) << TYPE(OBSTRN)
-	  << SUBTYPE(ACHARE, 1) << SUBTYPE(RESARE, 9) << SUBTYPE(RESARE, 2);
+	  << SUBTYPE(ACHARE, 1) << SUBTYPE(RESARE, 9) << SUBTYPE(RESARE, 2)
+	  << TYPE(PRCARE);
 }
 
 void Style::defaultLineStyle()