WS30 Line Features - fix build

Add missing files.

simgear/scene/tgdb/LineFeatureBin.cxx

@@ -0,0 +1,107 @@
+/* -*-c++-*-
+ *
+ * Copyright (C) 2008 Stuart Buchanan
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <simgear_config.h>
+#endif
+
+#include <osgDB/ReadFile>
+#include <osgDB/FileUtils>
+
+#include <simgear/debug/logstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+
+#include "LineFeatureBin.hxx"
+
+using namespace osg;
+
+namespace simgear
+{
+
+LineFeatureBin::LineFeatureBin(const SGPath& absoluteFileName, const std::string material) :
+  _material(material)
+{
+    if (!absoluteFileName.exists()) {
+        SG_LOG(SG_TERRAIN, SG_ALERT, "LineFeature list file " << absoluteFileName << " does not exist.");
+        return;
+    }
+
+    sg_gzifstream stream(absoluteFileName);
+    if (!stream.is_open()) {
+        SG_LOG(SG_TERRAIN, SG_ALERT, "Unable to open " << absoluteFileName);
+        return;
+    }
+
+    while (!stream.eof()) {
+        // read a line.  Each line defines a single line feature, consisting of a width followed by a series of lon/lat positions.
+        // Or a comment, starting with #
+        std::string line;
+        std::getline(stream, line);
+
+        // strip comments
+        std::string::size_type hash_pos = line.find('#');
+        if (hash_pos != std::string::npos)
+            line.resize(hash_pos);
+
+        // and process further
+        std::stringstream in(line);
+
+        // Line format is W A B C D lon0 lat0 lon1 lat1 lon2 lat2 lon3 lat4....
+        // where:
+        // W is the width in m
+        // A, B, C, D are generic attributes.  Their interpretation may vary by feature type
+        // lon[n], lat[n] are pairs of lon/lat defining straight road segments
+        float w = 0.0f;
+        int attributes = 0;
+        float a=0, b=0, c=0, d=0;
+        std::list<SGGeod> nodes;
+
+        in >> w >> attributes >> a >> b >> c >> d;
+
+        if (in.bad() || in.fail()) {
+            SG_LOG(SG_TERRAIN, SG_WARN, "Error parsing road entry in: " << absoluteFileName << " line: \"" << line << "\"");
+            continue;
+        }
+
+        while (true) {
+            float lon = 0.0f, lat=0.0f;
+            in >> lon >> lat;
+
+            if (in.bad() || in.fail()) {
+                break;
+            }
+
+            const SGGeod node = SGGeod::fromDeg(lon, lat);
+            nodes.push_back(node);
+        }
+
+        if (nodes.size() > 1) {
+            insert(LineFeature(nodes, w, attributes, a, b, c, d));
+        } else {
+            SG_LOG(SG_TERRAIN, SG_WARN, "LineFeature definition with fewer than two lon/lat nodes : " << absoluteFileName << " line: \"" << line << "\"");
+        }
+    }
+
+    stream.close();
+};
+
+
+}

simgear/scene/tgdb/LineFeatureBin.hxx

@@ -0,0 +1,81 @@
+/* -*-c++-*-
+ *
+ * Copyright (C) 2021 Stuart Buchanan
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ROAD_BIN_HXX
+#define ROAD_BIN_HXX
+
+#include <vector>
+#include <string>
+
+#include <osg/Geometry>
+#include <osg/Group>
+#include <osg/Matrix>
+
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/math/SGGeod.hxx>
+
+namespace simgear
+{
+class LineFeatureBin {
+public:
+    LineFeatureBin() = default;
+    LineFeatureBin(const SGPath& absoluteFileName, const std::string material);
+
+    ~LineFeatureBin() = default;
+
+    struct LineFeature {
+        const std::list<SGGeod> _nodes;
+        const float _width;
+        const int _attributes;
+        const float _a;
+        const float _b;
+        const float _c;
+        const float _d;
+        LineFeature(const std::list<SGGeod> nodes, const float w, const int attributes, const float a, const float b, const float c, const float d) : 
+          _nodes(nodes), _width(w), _attributes(attributes), _a(a), _b(b), _c(c), _d(d)
+        {
+        }
+    };
+
+    typedef std::list<LineFeature> LineFeatureList;
+
+    void insert(const LineFeature& t) { 
+        _lineFeatureList.push_back(t); 
+    }
+
+    const LineFeatureList getLineFeatures() const {
+        return _lineFeatureList;
+    }
+
+    const std::string getMaterial() const { 
+        return _material; 
+    }
+
+private:
+    LineFeatureList _lineFeatureList;
+    const std::string _material;
+};
+
+typedef std::list<LineFeatureBin> LineFeatureBinList;
+
+}
+
+#endif