1 // navigation display texture
3 // Written by James Turner, forked from wxradar code
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License as
8 // published by the Free Software Foundation; either version 2 of the
9 // License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26 #include "NavDisplay.hxx"
29 #include <boost/foreach.hpp>
30 #include <boost/algorithm/string/case_conv.hpp>
34 #include <osg/Geometry>
35 #include <osg/Matrixf>
36 #include <osg/PrimitiveSet>
37 #include <osg/StateSet>
38 #include <osg/LineWidth>
39 #include <osg/Version>
41 #include <simgear/constants.h>
42 #include <simgear/misc/sg_path.hxx>
43 #include <simgear/scene/model/model.hxx>
44 #include <simgear/structure/exception.hxx>
45 #include <simgear/misc/sg_path.hxx>
46 #include <simgear/misc/strutils.hxx>
47 #include <simgear/math/sg_geodesy.hxx>
51 #include <iostream> // for cout, endl
53 using std::stringstream;
55 using std::setprecision;
64 #include <Main/fg_props.hxx>
65 #include <Main/globals.hxx>
66 #include <Cockpit/panel.hxx>
67 #include <Navaids/routePath.hxx>
68 #include <Autopilot/route_mgr.hxx>
69 #include <Navaids/navrecord.hxx>
70 #include <Navaids/navlist.hxx>
71 #include <Navaids/fix.hxx>
72 #include <Airports/simple.hxx>
73 #include <Airports/runways.hxx>
75 #include "instrument_mgr.hxx"
76 #include "od_gauge.hxx"
78 static const char *DEFAULT_FONT = "typewriter.txf";
81 osg::Matrixf degRotation(float angle)
83 return osg::Matrixf::rotate(angle * SG_DEGREES_TO_RADIANS, 0.0f, 0.0f, -1.0f);
86 static osg::Vec4 readColor(SGPropertyNode* colorNode, const osg::Vec4& c)
89 result.r() = colorNode->getDoubleValue("red", c.r());
90 result.g() = colorNode->getDoubleValue("green", c.g());
91 result.b() = colorNode->getDoubleValue("blue", c.b());
92 result.a() = colorNode->getDoubleValue("alpha", c.a());
96 static osgText::Text::AlignmentType readAlignment(const std::string& t)
98 if (t == "left-top") {
99 return osgText::Text::LEFT_TOP;
100 } else if (t == "left-center") {
101 return osgText::Text::LEFT_CENTER;
102 } else if (t == "left-bottom") {
103 return osgText::Text::LEFT_BOTTOM;
104 } else if (t == "center-top") {
105 return osgText::Text::CENTER_TOP;
106 } else if (t == "center-center") {
107 return osgText::Text::CENTER_CENTER;
108 } else if (t == "center-bottom") {
109 return osgText::Text::CENTER_BOTTOM;
110 } else if (t == "right-top") {
111 return osgText::Text::RIGHT_TOP;
112 } else if (t == "right-center") {
113 return osgText::Text::RIGHT_CENTER;
114 } else if (t == "right-bottom") {
115 return osgText::Text::RIGHT_BOTTOM;
116 } else if (t == "left-baseline") {
117 return osgText::Text::LEFT_BASE_LINE;
118 } else if (t == "center-baseline") {
119 return osgText::Text::CENTER_BASE_LINE;
120 } else if (t == "right-baseline") {
121 return osgText::Text::RIGHT_BASE_LINE;
124 return osgText::Text::BASE_LINE;
127 static string formatPropertyValue(SGPropertyNode* nd, const string& format)
130 static char buf[512];
131 if (format.find('d') != string::npos) {
132 ::snprintf(buf, 512, format.c_str(), nd->getIntValue());
136 if (format.find('s') != string::npos) {
137 ::snprintf(buf, 512, format.c_str(), nd->getStringValue());
141 // assume it's a double/float
142 ::snprintf(buf, 512, format.c_str(), nd->getDoubleValue());
146 static osg::Vec2 mult(const osg::Vec2& v, const osg::Matrixf& m)
148 osg::Vec3 r = m.preMult(osg::Vec3(v.x(), v.y(), 0.0));
149 return osg::Vec2(r.x(), r.y());
152 class NavDisplay::CacheListener : public SGPropertyChangeListener
155 CacheListener(NavDisplay *nd) :
159 virtual void valueChanged (SGPropertyNode * prop)
161 _nd->invalidatePositionedCache();
167 class NavDisplay::ForceUpdateListener : public SGPropertyChangeListener
170 ForceUpdateListener(NavDisplay *nd) :
174 virtual void valueChanged (SGPropertyNode * prop)
182 ///////////////////////////////////////////////////////////////////
192 bool initFromNode(SGPropertyNode* node, NavDisplay* owner)
194 if (!node->getChild("type")) {
198 type = node->getStringValue("type");
199 boost::to_lower(type);
200 SGPropertyNode* enableNode = node->getChild("enable");
202 enable.reset(sgReadCondition(fgGetNode("/"), enableNode));
206 while (node->hasChild("state", n)) {
207 string m = node->getChild("state", n++)->getStringValue();
209 excluded_states.insert(m.substr(1));
211 required_states.insert(m);
213 } // of matches parsing
219 void setDefinition(SymbolDef* d)
224 SymbolDef* getDefinition() const
225 { return definition; }
227 bool matches(const string_set& states) const
229 BOOST_FOREACH(const string& s, required_states) {
230 if (states.count(s) == 0) {
235 BOOST_FOREACH(const string& s, excluded_states) {
236 if (states.count(s) != 0) {
244 // return if the enabled state changed (needs a cache update)
248 bool wasEnabled = enabled;
249 enabled = enable->test();
250 return (enabled != wasEnabled);
257 bool enabled; // cached enabled state
260 // record instances for limiting by count
263 SymbolDef* definition;
265 std::auto_ptr<SGCondition> enable;
266 string_set required_states;
267 string_set excluded_states;
273 SymbolDef() : limitCount(0) { }
275 bool initFromNode(SGPropertyNode* node, NavDisplay* owner)
277 if (node->getChild("type")) {
278 SymbolRule* builtinRule = new SymbolRule;
279 builtinRule->initFromNode(node, owner);
280 builtinRule->setDefinition(this);
281 owner->addRule(builtinRule);
284 if (node->hasChild("width")) {
285 float w = node->getFloatValue("width");
286 float h = node->getFloatValue("height", w);
292 xy0.x() = node->getFloatValue("x0", 0.0);
293 xy0.y() = node->getFloatValue("y0", 0.0);
294 xy1.x() = node->getFloatValue("x1", 5);
295 xy1.y() = node->getFloatValue("y1", 5);
298 double texSize = node->getFloatValue("texture-size", owner->textureSize());
300 uv0.x() = node->getFloatValue("u0", 0) / texSize;
301 uv0.y() = node->getFloatValue("v0", 0) / texSize;
302 uv1.x() = node->getFloatValue("u1", 1) / texSize;
303 uv1.y() = node->getFloatValue("v1", 1) / texSize;
305 color = readColor(node->getChild("color"), osg::Vec4(1, 1, 1, 1));
306 priority = node->getIntValue("priority", 0);
307 zOrder = node->getIntValue("zOrder", 0);
308 rotateToHeading = node->getBoolValue("rotate-to-heading", false);
309 roundPos = node->getBoolValue("round-position", true);
311 if (node->hasChild("text")) {
313 alignment = readAlignment(node->getStringValue("text-align"));
314 textTemplate = node->getStringValue("text");
315 textOffset.x() = node->getFloatValue("text-offset-x", 0);
316 textOffset.y() = node->getFloatValue("text-offset-y", 0);
317 textColor = readColor(node->getChild("text-color"), color);
319 SGPropertyNode* enableNode = node->getChild("text-enable");
321 textEnable.reset(sgReadCondition(fgGetNode("/"), enableNode));
325 drawLine = node->getBoolValue("draw-line", false);
326 lineColor = readColor(node->getChild("line-color"), color);
327 drawRouteLeg = node->getBoolValue("draw-leg", false);
329 stretchSymbol = node->getBoolValue("stretch-symbol", false);
331 stretchY2 = node->getFloatValue("y2");
332 stretchY3 = node->getFloatValue("y3");
333 stretchV2 = node->getFloatValue("v2") / texSize;
334 stretchV3 = node->getFloatValue("v3") / texSize;
337 SGPropertyNode* limitNode = node->getChild("limit");
339 limitCount = limitNode->getIntValue();
351 bool rotateToHeading;
352 bool roundPos; ///< should position be rounded to integer values
354 std::auto_ptr<SGCondition> textEnable;
355 bool textEnabled; ///< cache condition result
357 osg::Vec2 textOffset;
358 osgText::Text::AlignmentType alignment;
364 // symbol stretching creates three quads (instead of one) - a start,
365 // middle and end quad, positioned along the line of the symbol.
366 // X (and U) axis values determined by the values above, so we only need
367 // to define the Y (and V) values to build the other quads.
369 double stretchY2, stretchY3;
370 double stretchV2, stretchV3;
374 int limitCount, instanceCount;
380 SymbolInstance(const osg::Vec2& p, double h, SymbolDef* def, SGPropertyNode* vars) :
387 osg::Vec2 pos; // projected position
390 SymbolDef* definition;
391 SGPropertyNode_ptr props;
395 assert(definition->hasText);
400 size_t pos = definition->textTemplate.find('{', lastPos);
401 if (pos == string::npos) { // no more replacements
402 r.append(definition->textTemplate.substr(lastPos));
406 r.append(definition->textTemplate.substr(lastPos, pos - lastPos));
408 size_t endReplacement = definition->textTemplate.find('}', pos+1);
409 if (endReplacement <= pos) {
410 return "bad replacement";
413 string spec = definition->textTemplate.substr(pos + 1, endReplacement - (pos + 1));
414 // look for formatter in spec
415 size_t colonPos = spec.find(':');
416 if (colonPos == string::npos) {
417 // simple replacement
418 r.append(props->getStringValue(spec));
420 string format = spec.substr(colonPos + 1);
421 string prop = spec.substr(0, colonPos);
422 r.append(formatPropertyValue(props->getNode(prop), format));
425 lastPos = endReplacement + 1;
432 //////////////////////////////////////////////////////////////////
434 NavDisplay::NavDisplay(SGPropertyNode *node) :
435 _name(node->getStringValue("name", "nd")),
436 _num(node->getIntValue("number", 0)),
438 _updateInterval(node->getDoubleValue("update-interval-sec", 0.1)),
448 _Instrument = fgGetNode(string("/instrumentation/" + _name).c_str(), _num, true);
449 _font_node = _Instrument->getNode("font", true);
451 #define INITFONT(p, val, type) if (!_font_node->hasValue(p)) _font_node->set##type##Value(p, val)
452 INITFONT("name", DEFAULT_FONT, String);
453 INITFONT("size", 8, Float);
454 INITFONT("line-spacing", 0.25, Float);
455 INITFONT("color/red", 0, Float);
456 INITFONT("color/green", 0.8, Float);
457 INITFONT("color/blue", 0, Float);
458 INITFONT("color/alpha", 1, Float);
461 _textureSize = _Instrument->getNode("symbol-texture-size", true)->getIntValue();
462 SGPropertyNode* symbolsNode = node->getNode("symbols");
463 SGPropertyNode* symbol;
465 map<string, SymbolDef*> definitionDict;
466 for (int i = 0; (symbol = symbolsNode->getChild("symbol", i)) != NULL; ++i) {
467 SymbolDef* def = new SymbolDef;
468 if (!def->initFromNode(symbol, this)) {
473 const char* id = symbol->getStringValue("id");
474 if (id && strlen(id)) {
475 definitionDict[id] = def;
478 _definitions.push_back(def);
479 } // of symbol definition parsing
481 SGPropertyNode* rulesNode = node->getNode("rules");
483 SGPropertyNode* rule;
485 for (int i = 0; (rule = rulesNode->getChild("rule", i)) != NULL; ++i) {
486 SymbolRule* r = new SymbolRule;
487 if (!r->initFromNode(rule, this)) {
492 const char* id = symbol->getStringValue("symbol");
493 if (id && strlen(id) && (definitionDict.find(id) != definitionDict.end())) {
494 r->setDefinition(definitionDict[id]);
496 SG_LOG(SG_INSTR, SG_WARN, "symbol rule has missing/unknown definition id:" << id);
502 } // of symbol rule parsing
508 NavDisplay::~NavDisplay()
516 _cachedItemsValid = false;
517 _cacheListener.reset(new CacheListener(this));
518 _forceUpdateListener.reset(new ForceUpdateListener(this));
520 _serviceable_node = _Instrument->getNode("serviceable", true);
521 _rangeNode = _Instrument->getNode("range", true);
522 if (!_rangeNode->hasValue()) {
523 _rangeNode->setDoubleValue(40.0);
525 _rangeNode->addChangeListener(_cacheListener.get());
526 _rangeNode->addChangeListener(_forceUpdateListener.get());
528 _xCenterNode = _Instrument->getNode("x-center");
529 if (!_xCenterNode->hasValue()) {
530 _xCenterNode->setDoubleValue(0.5);
532 _xCenterNode->addChangeListener(_forceUpdateListener.get());
533 _yCenterNode = _Instrument->getNode("y-center");
534 if (!_yCenterNode->hasValue()) {
535 _yCenterNode->setDoubleValue(0.5);
537 _yCenterNode->addChangeListener(_forceUpdateListener.get());
539 // texture name to use in 2D and 3D instruments
540 _texture_path = _Instrument->getStringValue("radar-texture-path",
541 "Aircraft/Instruments/Textures/od_wxradar.rgb");
543 string path = _Instrument->getStringValue("symbol-texture-path",
544 "Aircraft/Instruments/Textures/nd-symbols.png");
545 SGPath tpath = globals->resolve_aircraft_path(path);
546 if (!tpath.exists()) {
547 SG_LOG(SG_INSTR, SG_WARN, "ND symbol texture not found:" << path);
550 // no mipmap or else alpha will mix with pixels on the border of shapes, ruining the effect
551 _symbolTexture = SGLoadTexture2D(tpath, NULL, false, false);
553 _odg = new FGODGauge;
554 _odg->setSize(_Instrument->getIntValue("texture-size", 512));
556 _route = static_cast<FGRouteMgr*>(globals->get_subsystem("route-manager"));
558 _navRadio1Node = fgGetNode("/instrumentation/nav[0]", true);
559 _navRadio2Node = fgGetNode("/instrumentation/nav[1]", true);
561 _excessDataNode = _Instrument->getChild("excess-data", 0, true);
562 _excessDataNode->setBoolValue(false);
563 _testModeNode = _Instrument->getChild("test-mode", 0, true);
564 _testModeNode->setBoolValue(false);
566 _viewHeadingNode = _Instrument->getChild("view-heading-deg", 0, true);
567 // OSG geometry setup
568 _radarGeode = new osg::Geode;
570 _geom = new osg::Geometry;
571 _geom->setUseDisplayList(false);
573 osg::StateSet *stateSet = _geom->getOrCreateStateSet();
574 stateSet->setTextureAttributeAndModes(0, _symbolTexture.get());
575 stateSet->setDataVariance(osg::Object::STATIC);
577 // Initially allocate space for 128 quads
578 _vertices = new osg::Vec2Array;
579 _vertices->setDataVariance(osg::Object::DYNAMIC);
580 _vertices->reserve(128 * 4);
581 _geom->setVertexArray(_vertices);
582 _texCoords = new osg::Vec2Array;
583 _texCoords->setDataVariance(osg::Object::DYNAMIC);
584 _texCoords->reserve(128 * 4);
585 _geom->setTexCoordArray(0, _texCoords);
587 _quadColors = new osg::Vec4Array;
588 _quadColors->setDataVariance(osg::Object::DYNAMIC);
589 _geom->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
590 _geom->setColorArray(_quadColors);
592 _symbolPrimSet = new osg::DrawArrays(osg::PrimitiveSet::QUADS);
593 _symbolPrimSet->setDataVariance(osg::Object::DYNAMIC);
594 _geom->addPrimitiveSet(_symbolPrimSet);
596 _geom->setInitialBound(osg::BoundingBox(osg::Vec3f(-256.0f, -256.0f, 0.0f),
597 osg::Vec3f(256.0f, 256.0f, 0.0f)));
599 _radarGeode->addDrawable(_geom);
601 // Texture in the 2D panel system
602 FGTextureManager::addTexture(_texture_path.c_str(), _odg->getTexture());
604 _lineGeometry = new osg::Geometry;
605 _lineGeometry->setUseDisplayList(false);
606 stateSet = _lineGeometry->getOrCreateStateSet();
607 osg::LineWidth *lw = new osg::LineWidth();
609 stateSet->setAttribute(lw);
611 _lineVertices = new osg::Vec2Array;
612 _lineVertices->setDataVariance(osg::Object::DYNAMIC);
613 _lineVertices->reserve(128 * 4);
614 _lineGeometry->setVertexArray(_lineVertices);
617 _lineColors = new osg::Vec4Array;
618 _lineColors->setDataVariance(osg::Object::DYNAMIC);
619 _lineGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
620 _lineGeometry->setColorArray(_lineColors);
622 _linePrimSet = new osg::DrawArrays(osg::PrimitiveSet::LINES);
623 _linePrimSet->setDataVariance(osg::Object::DYNAMIC);
624 _lineGeometry->addPrimitiveSet(_linePrimSet);
626 _lineGeometry->setInitialBound(osg::BoundingBox(osg::Vec3f(-256.0f, -256.0f, 0.0f),
627 osg::Vec3f(256.0f, 256.0f, 0.0f)));
629 _radarGeode->addDrawable(_lineGeometry);
631 _textGeode = new osg::Geode;
633 osg::Camera *camera = _odg->getCamera();
634 camera->addChild(_radarGeode.get());
635 camera->addChild(_textGeode.get());
636 osg::Texture2D* tex = _odg->getTexture();
637 camera->setProjectionMatrixAsOrtho2D(0, tex->getTextureWidth(),
638 0, tex->getTextureHeight());
644 NavDisplay::update (double delta_time_sec)
646 if (!fgGetBool("sim/sceneryloaded", false)) {
650 if (!_odg || !_serviceable_node->getBoolValue()) {
651 _Instrument->setStringValue("status", "");
656 _forceUpdate = false;
659 _time += delta_time_sec;
660 if (_time < _updateInterval){
663 _time -= _updateInterval;
666 _rangeNm = _rangeNode->getFloatValue();
667 if (_testModeNode->getBoolValue()) {
669 } else if (_Instrument->getBoolValue("aircraft-heading-up", true)) {
670 _view_heading = fgGetDouble("/orientation/heading-deg");
672 _view_heading = _Instrument->getFloatValue("heading-up-deg", 0.0);
674 _viewHeadingNode->setDoubleValue(_view_heading);
676 double xCenterFrac = _xCenterNode->getDoubleValue();
677 double yCenterFrac = _yCenterNode->getDoubleValue();
678 int pixelSize = _odg->size();
680 int rangePixels = _Instrument->getIntValue("range-pixels", -1);
681 if (rangePixels < 0) {
682 // hacky - assume (as is very common) that x-frac doesn't vary, and
683 // y-frac is used to position the center at either the top or bottom of
684 // the pixel area. Measure from the center to the furthest edge (top or bottom)
685 rangePixels = pixelSize * std::max(fabs(1.0 - yCenterFrac), fabs(yCenterFrac));
688 _scale = rangePixels / _rangeNm;
689 _Instrument->setDoubleValue("scale", _scale);
692 _centerTrans = osg::Matrixf::translate(xCenterFrac * pixelSize,
693 yCenterFrac * pixelSize, 0.0);
695 // scale from nm to display units, rotate so aircraft heading is up
696 // (as opposed to north), and compensate for centering
697 _projectMat = osg::Matrixf::scale(_scale, _scale, 1.0) *
698 degRotation(-_view_heading) * _centerTrans;
700 _pos = globals->get_aircraft_position();
702 // invalidate the cache of positioned items, if we travelled more than 1nm
703 if (_cachedItemsValid) {
704 SGVec3d cartNow(SGVec3d::fromGeod(_pos));
705 double movedNm = dist(_cachedPos, cartNow) * SG_METER_TO_NM;
706 _cachedItemsValid = (movedNm < 1.0);
710 _lineVertices->clear();
711 _lineColors->clear();
712 _quadColors->clear();
714 _textGeode->removeDrawables(0, _textGeode->getNumDrawables());
716 BOOST_FOREACH(SymbolInstance* si, _symbols) {
721 BOOST_FOREACH(SymbolDef* d, _definitions) {
722 d->instanceCount = 0;
723 d->textEnabled = d->textEnable.get() ? d->textEnable->test() : true;
726 bool enableChanged = false;
727 BOOST_FOREACH(SymbolRule* r, _rules) {
728 enableChanged |= r->checkEnabled();
732 SG_LOG(SG_INSTR, SG_INFO, "NS rule enables changed, rebuilding cache");
733 _cachedItemsValid = false;
736 if (_testModeNode->getBoolValue()) {
743 limitDisplayedSymbols();
748 _symbolPrimSet->set(osg::PrimitiveSet::QUADS, 0, _vertices->size());
749 _symbolPrimSet->dirty();
750 _linePrimSet->set(osg::PrimitiveSet::LINES, 0, _lineVertices->size());
751 _linePrimSet->dirty();
756 NavDisplay::updateFont()
758 float red = _font_node->getFloatValue("color/red");
759 float green = _font_node->getFloatValue("color/green");
760 float blue = _font_node->getFloatValue("color/blue");
761 float alpha = _font_node->getFloatValue("color/alpha");
762 _font_color.set(red, green, blue, alpha);
764 _font_size = _font_node->getFloatValue("size");
765 _font_spacing = _font_size * _font_node->getFloatValue("line-spacing");
766 string path = _font_node->getStringValue("name", DEFAULT_FONT);
769 if (path[0] != '/') {
770 tpath = globals->get_fg_root();
771 tpath.append("Fonts");
777 osg::ref_ptr<osgDB::ReaderWriter::Options> fontOptions = new osgDB::ReaderWriter::Options("monochrome");
778 osg::ref_ptr<osgText::Font> font = osgText::readFontFile(tpath.c_str(), fontOptions.get());
782 _font->setMinFilterHint(osg::Texture::NEAREST);
783 _font->setMagFilterHint(osg::Texture::NEAREST);
784 _font->setGlyphImageMargin(0);
785 _font->setGlyphImageMarginRatio(0);
789 void NavDisplay::addSymbolToScene(SymbolInstance* sym)
791 SymbolDef* def = sym->definition;
795 verts[1] = osg::Vec2(def->xy1.x(), def->xy0.y());
797 verts[3] = osg::Vec2(def->xy0.x(), def->xy1.y());
799 if (def->rotateToHeading) {
800 osg::Matrixf m(degRotation(sym->headingDeg - _view_heading));
801 for (int i=0; i<4; ++i) {
802 verts[i] = mult(verts[i], m);
806 osg::Vec2 pos = sym->pos;
808 pos = osg::Vec2((int) pos.x(), (int) pos.y());
811 _texCoords->push_back(def->uv0);
812 _texCoords->push_back(osg::Vec2(def->uv1.x(), def->uv0.y()));
813 _texCoords->push_back(def->uv1);
814 _texCoords->push_back(osg::Vec2(def->uv0.x(), def->uv1.y()));
816 for (int i=0; i<4; ++i) {
817 _vertices->push_back(verts[i] + pos);
818 _quadColors->push_back(def->color);
821 if (def->stretchSymbol) {
822 osg::Vec2 stretchVerts[4];
823 stretchVerts[0] = osg::Vec2(def->xy0.x(), def->stretchY2);
824 stretchVerts[1] = osg::Vec2(def->xy1.x(), def->stretchY2);
825 stretchVerts[2] = osg::Vec2(def->xy1.x(), def->stretchY3);
826 stretchVerts[3] = osg::Vec2(def->xy0.x(), def->stretchY3);
828 osg::Matrixf m(degRotation(sym->headingDeg - _view_heading));
829 for (int i=0; i<4; ++i) {
830 stretchVerts[i] = mult(stretchVerts[i], m);
834 _vertices->push_back(verts[2] + pos);
835 _vertices->push_back(stretchVerts[1] + sym->endPos);
836 _vertices->push_back(stretchVerts[0] + sym->endPos);
837 _vertices->push_back(verts[3] + pos);
839 _texCoords->push_back(def->uv1);
840 _texCoords->push_back(osg::Vec2(def->uv1.x(), def->stretchV2));
841 _texCoords->push_back(osg::Vec2(def->uv0.x(), def->stretchV2));
842 _texCoords->push_back(osg::Vec2(def->uv0.x(), def->uv1.y()));
844 for (int i=0; i<4; ++i) {
845 _quadColors->push_back(def->color);
848 // quad three, for the end portion
849 for (int i=0; i<4; ++i) {
850 _vertices->push_back(stretchVerts[i] + sym->endPos);
851 _quadColors->push_back(def->color);
854 _texCoords->push_back(osg::Vec2(def->uv0.x(), def->stretchV2));
855 _texCoords->push_back(osg::Vec2(def->uv1.x(), def->stretchV2));
856 _texCoords->push_back(osg::Vec2(def->uv1.x(), def->stretchV3));
857 _texCoords->push_back(osg::Vec2(def->uv0.x(), def->stretchV3));
861 addLine(sym->pos, sym->endPos, def->lineColor);
864 if (!def->hasText || !def->textEnabled) {
868 osgText::Text* t = new osgText::Text;
869 t->setFont(_font.get());
870 t->setFontResolution(12, 12);
871 t->setCharacterSize(_font_size);
872 t->setLineSpacing(_font_spacing);
873 t->setColor(def->textColor);
874 t->setAlignment(def->alignment);
875 t->setText(sym->text());
878 osg::Vec2 textPos = def->textOffset + pos;
879 // ensure we use ints here, or text visual quality goes bad
880 t->setPosition(osg::Vec3((int)textPos.x(), (int)textPos.y(), 0));
881 _textGeode->addDrawable(t);
884 class OrderByPriority
887 bool operator()(SymbolInstance* a, SymbolInstance* b)
889 return a->definition->priority > b->definition->priority;
893 void NavDisplay::limitDisplayedSymbols()
895 // gloabl symbol limit
896 _maxSymbols= _Instrument->getIntValue("max-symbols", _maxSymbols);
897 if ((int) _symbols.size() <= _maxSymbols) {
898 _excessDataNode->setBoolValue(false);
902 std::sort(_symbols.begin(), _symbols.end(), OrderByPriority());
903 _symbols.resize(_maxSymbols);
904 _excessDataNode->setBoolValue(true);
910 bool operator()(SymbolInstance* a, SymbolInstance* b)
912 return a->definition->zOrder > b->definition->zOrder;
916 void NavDisplay::addSymbolsToScene()
918 std::sort(_symbols.begin(), _symbols.end(), OrderByZ());
919 BOOST_FOREACH(SymbolInstance* sym, _symbols) {
920 addSymbolToScene(sym);
924 void NavDisplay::addLine(osg::Vec2 a, osg::Vec2 b, const osg::Vec4& color)
926 _lineVertices->push_back(a);
927 _lineVertices->push_back(b);
928 _lineColors->push_back(color);
929 _lineColors->push_back(color);
932 osg::Vec2 NavDisplay::projectBearingRange(double bearingDeg, double rangeNm) const
934 osg::Vec3 p(0, rangeNm, 0.0);
935 p = degRotation(bearingDeg).preMult(p);
936 p = _projectMat.preMult(p);
937 return osg::Vec2(p.x(), p.y());
940 osg::Vec2 NavDisplay::projectGeod(const SGGeod& geod) const
942 double rangeM, bearing, az2;
943 SGGeodesy::inverse(_pos, geod, bearing, az2, rangeM);
944 return projectBearingRange(bearing, rangeM * SG_METER_TO_NM);
947 class Filter : public FGPositioned::Filter
950 Filter(NavDisplay* nd) : _owner(nd) { }
952 double minRunwayLengthFt;
954 virtual bool pass(FGPositioned* aPos) const
956 if (aPos->type() == FGPositioned::FIX) {
957 string ident(aPos->ident());
958 // ignore fixes which end in digits
959 if ((ident.size() > 4) && isdigit(ident[3]) && isdigit(ident[4])) {
964 if (aPos->type() == FGPositioned::AIRPORT) {
965 FGAirport* apt = (FGAirport*) aPos;
966 if (!apt->hasHardRunwayOfLengthFt(minRunwayLengthFt)) {
971 // check against current rule states
972 return _owner->isPositionedShown(aPos);
975 virtual FGPositioned::Type minType() const {
976 return FGPositioned::AIRPORT;
979 virtual FGPositioned::Type maxType() const {
980 return FGPositioned::OBSTACLE;
987 void NavDisplay::findItems()
989 if (!_cachedItemsValid) {
991 filt.minRunwayLengthFt = fgGetDouble("/sim/navdb/min-runway-length-ft", 2000);
992 _itemsInRange = FGPositioned::findClosestN(_pos, _maxSymbols, _rangeNm, &filt);
993 _cachedItemsValid = true;
994 _cachedPos = SGVec3d::fromGeod(_pos);
997 // sort by distance from pos, so symbol limits are accurate
998 FGPositioned::sortByRange(_itemsInRange, _pos);
1000 BOOST_FOREACH(FGPositioned* pos, _itemsInRange) {
1001 foundPositionedItem(pos);
1005 void NavDisplay::processRoute()
1007 _routeSources.clear();
1008 flightgear::FlightPlan* fp = _route->flightPlan();
1010 int current = _route->currentIndex();
1012 for (int l=0; l<fp->numLegs(); ++l) {
1013 flightgear::FlightPlan::Leg* leg = fp->legAtIndex(l);
1014 flightgear::WayptRef wpt(leg->waypoint());
1015 _routeSources.insert(wpt->source());
1018 state.insert("on-active-route");
1021 state.insert("passed");
1025 state.insert("current-wp");
1029 state.insert("future");
1032 if (l == (current + 1)) {
1033 state.insert("next-wp");
1036 SymbolRuleVector rules;
1037 findRules("waypoint" , state, rules);
1038 if (rules.empty()) {
1039 return; // no rules matched, we can skip this item
1042 SGGeod g = path.positionForIndex(l);
1043 SGPropertyNode* vars = _route->wayptNodeAtIndex(l);
1045 continue; // shouldn't happen, but let's guard against it
1049 computeWayptPropsAndHeading(wpt, g, vars, heading);
1051 osg::Vec2 projected = projectGeod(g);
1052 BOOST_FOREACH(SymbolRule* r, rules) {
1053 addSymbolInstance(projected, heading, r->getDefinition(), vars);
1055 if (r->getDefinition()->drawRouteLeg) {
1056 SGGeodVec gv(path.pathForIndex(l));
1058 osg::Vec2 pr = projectGeod(gv[0]);
1059 for (unsigned int i=1; i<gv.size(); ++i) {
1060 osg::Vec2 p = projectGeod(gv[i]);
1061 addLine(pr, p, r->getDefinition()->lineColor);
1065 } // of leg drawing enabled
1066 } // of matching rules iteration
1067 } // of waypoints iteration
1070 void NavDisplay::computeWayptPropsAndHeading(flightgear::Waypt* wpt, const SGGeod& pos, SGPropertyNode* nd, double& heading)
1073 SGGeodesy::inverse(_pos, pos, heading, az2, rangeM);
1074 nd->setIntValue("radial", heading);
1075 nd->setDoubleValue("distance-nm", rangeM * SG_METER_TO_NM);
1077 heading = nd->getDoubleValue("leg-bearing-true-deg");
1080 void NavDisplay::processNavRadios()
1082 _nav1Station = processNavRadio(_navRadio1Node);
1083 _nav2Station = processNavRadio(_navRadio2Node);
1085 foundPositionedItem(_nav1Station);
1086 foundPositionedItem(_nav2Station);
1089 FGNavRecord* NavDisplay::processNavRadio(const SGPropertyNode_ptr& radio)
1091 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1092 FGNavRecord* nav = FGNavList::findByFreq(mhz, _pos, FGNavList::navFilter());
1093 if (!nav || (nav->ident() != radio->getStringValue("nav-id"))) {
1094 // station was not found
1102 bool NavDisplay::anyRuleForType(const string& type) const
1104 BOOST_FOREACH(SymbolRule* r, _rules) {
1109 if (r->type == type) {
1117 void NavDisplay::findRules(const string& type, const string_set& states, SymbolRuleVector& rules)
1119 BOOST_FOREACH(SymbolRule* candidate, _rules) {
1120 if (!candidate->enabled || (candidate->type != type)) {
1124 if (candidate->matches(states)) {
1125 rules.push_back(candidate);
1130 bool NavDisplay::isPositionedShown(FGPositioned* pos)
1132 SymbolRuleVector rules;
1133 isPositionedShownInner(pos, rules);
1134 return !rules.empty();
1137 void NavDisplay::isPositionedShownInner(FGPositioned* pos, SymbolRuleVector& rules)
1139 string type = FGPositioned::nameForType(pos->type());
1140 boost::to_lower(type);
1141 if (!anyRuleForType(type)) {
1142 return; // not diplayed at all, we're done
1146 computePositionedState(pos, states);
1148 findRules(type, states, rules);
1151 void NavDisplay::foundPositionedItem(FGPositioned* pos)
1157 SymbolRuleVector rules;
1158 isPositionedShownInner(pos, rules);
1159 if (rules.empty()) {
1163 SGPropertyNode_ptr vars(new SGPropertyNode);
1165 computePositionedPropsAndHeading(pos, vars, heading);
1167 osg::Vec2 projected = projectGeod(pos->geod());
1168 if (pos->type() == FGPositioned::RUNWAY) {
1169 FGRunway* rwy = (FGRunway*) pos;
1170 projected = projectGeod(rwy->threshold());
1173 BOOST_FOREACH(SymbolRule* r, rules) {
1174 SymbolInstance* ins = addSymbolInstance(projected, heading, r->getDefinition(), vars);
1175 if (pos->type() == FGPositioned::RUNWAY) {
1176 FGRunway* rwy = (FGRunway*) pos;
1177 ins->endPos = projectGeod(rwy->end());
1182 void NavDisplay::computePositionedPropsAndHeading(FGPositioned* pos, SGPropertyNode* nd, double& heading)
1184 nd->setStringValue("id", pos->ident());
1185 nd->setStringValue("name", pos->name());
1186 nd->setDoubleValue("elevation-ft", pos->elevation());
1187 nd->setIntValue("heading-deg", 0);
1190 switch (pos->type()) {
1191 case FGPositioned::VOR:
1192 case FGPositioned::LOC:
1193 case FGPositioned::TACAN: {
1194 FGNavRecord* nav = static_cast<FGNavRecord*>(pos);
1195 nd->setDoubleValue("frequency-mhz", nav->get_freq());
1197 if (pos == _nav1Station) {
1198 heading = _navRadio1Node->getDoubleValue("radials/target-radial-deg");
1199 } else if (pos == _nav2Station) {
1200 heading = _navRadio2Node->getDoubleValue("radials/target-radial-deg");
1203 nd->setIntValue("heading-deg", heading);
1207 case FGPositioned::AIRPORT:
1208 case FGPositioned::SEAPORT:
1209 case FGPositioned::HELIPORT:
1213 case FGPositioned::RUNWAY: {
1214 FGRunway* rwy = static_cast<FGRunway*>(pos);
1215 heading = rwy->headingDeg();
1216 nd->setDoubleValue("heading-deg", heading);
1217 nd->setIntValue("length-ft", rwy->lengthFt());
1218 nd->setStringValue("airport", rwy->airport()->ident());
1227 void NavDisplay::computePositionedState(FGPositioned* pos, string_set& states)
1229 if (_routeSources.count(pos) != 0) {
1230 states.insert("on-active-route");
1233 flightgear::FlightPlan* fp = _route->flightPlan();
1234 switch (pos->type()) {
1235 case FGPositioned::VOR:
1236 case FGPositioned::LOC:
1237 if (pos == _nav1Station) {
1238 states.insert("tuned");
1239 states.insert("nav1");
1242 if (pos == _nav2Station) {
1243 states.insert("tuned");
1244 states.insert("nav2");
1248 case FGPositioned::AIRPORT:
1249 case FGPositioned::SEAPORT:
1250 case FGPositioned::HELIPORT:
1252 // once the FMS system has some way to tell us about them, of course
1254 if (pos == fp->departureAirport()) {
1255 states.insert("departure");
1258 if (pos == fp->destinationAirport()) {
1259 states.insert("destination");
1263 case FGPositioned::RUNWAY:
1264 if (pos == fp->departureRunway()) {
1265 states.insert("departure");
1268 if (pos == fp->destinationRunway()) {
1269 states.insert("destination");
1273 case FGPositioned::OBSTACLE:
1275 FGObstacle* obs = (FGObstacle*) pos;
1277 states.insert("lit");
1280 if (obj->getHeightAGLFt() >= 1000) {
1281 states.insert("greater-1000-ft");
1288 } // FGPositioned::Type switch
1291 static string mapAINodeToType(SGPropertyNode* model)
1293 // assume all multiplayer items are aircraft for the moment. Not ideal.
1294 if (!strcmp(model->getName(), "multiplayer")) {
1295 return "ai-aircraft";
1298 return string("ai-") + model->getName();
1301 void NavDisplay::processAI()
1303 SGPropertyNode *ai = fgGetNode("/ai/models", true);
1304 for (int i = ai->nChildren() - 1; i >= 0; i--) {
1305 SGPropertyNode *model = ai->getChild(i);
1306 if (!model->nChildren()) {
1310 // prefix types with 'ai-', to avoid any chance of namespace collisions
1311 // with fg-positioned.
1313 computeAIStates(model, ss);
1314 SymbolRuleVector rules;
1315 findRules(mapAINodeToType(model), ss, rules);
1316 if (rules.empty()) {
1317 return; // no rules matched, we can skip this item
1320 double heading = model->getDoubleValue("orientation/true-heading-deg");
1321 SGGeod aiModelPos = SGGeod::fromDegFt(model->getDoubleValue("position/longitude-deg"),
1322 model->getDoubleValue("position/latitude-deg"),
1323 model->getDoubleValue("position/altitude-ft"));
1324 // compute some additional props
1325 int fl = (aiModelPos.getElevationFt() / 1000);
1326 model->setIntValue("flight-level", fl * 10);
1328 osg::Vec2 projected = projectGeod(aiModelPos);
1329 BOOST_FOREACH(SymbolRule* r, rules) {
1330 addSymbolInstance(projected, heading, r->getDefinition(), (SGPropertyNode*) model);
1332 } // of ai models iteration
1335 void NavDisplay::computeAIStates(const SGPropertyNode* ai, string_set& states)
1337 int threatLevel = ai->getIntValue("tcas/threat-level",-1);
1338 if (threatLevel < 1)
1341 states.insert("tcas");
1343 std::ostringstream os;
1344 os << "tcas-threat-level-" << threatLevel;
1345 states.insert(os.str());
1347 double vspeed = ai->getDoubleValue("velocities/vertical-speed-fps");
1348 if (vspeed < -3.0) {
1349 states.insert("descending");
1350 } else if (vspeed > 3.0) {
1351 states.insert("climbing");
1355 SymbolInstance* NavDisplay::addSymbolInstance(const osg::Vec2& proj, double heading, SymbolDef* def, SGPropertyNode* vars)
1357 if (isProjectedClipped(proj)) {
1361 if ((def->limitCount > 0) && (def->instanceCount >= def->limitCount)) {
1365 ++def->instanceCount;
1366 SymbolInstance* sym = new SymbolInstance(proj, heading, def, vars);
1367 _symbols.push_back(sym);
1371 bool NavDisplay::isProjectedClipped(const osg::Vec2& projected) const
1373 double size = _odg->size();
1374 return (projected.x() < 0.0) ||
1375 (projected.y() < 0.0) ||
1376 (projected.x() >= size) ||
1377 (projected.y() >= size);
1380 void NavDisplay::addTestSymbol(const std::string& type, const std::string& states, const SGGeod& pos, double heading, SGPropertyNode* vars)
1382 string_set stateSet;
1383 BOOST_FOREACH(std::string s, simgear::strutils::split(states, ",")) {
1387 SymbolRuleVector rules;
1388 findRules(type, stateSet, rules);
1389 if (rules.empty()) {
1390 return; // no rules matched, we can skip this item
1393 osg::Vec2 projected = projectGeod(pos);
1394 BOOST_FOREACH(SymbolRule* r, rules) {
1395 addSymbolInstance(projected, heading, r->getDefinition(), vars);
1399 void NavDisplay::addTestSymbols()
1401 _pos = SGGeod::fromDeg(-122.3748889, 37.6189722); // KSFO
1405 SGGeodesy::direct(_pos, 45.0, 20.0 * SG_NM_TO_METER, a1, dummy);
1407 addTestSymbol("airport", "", a1, 0.0, NULL);
1409 SGGeodesy::direct(_pos, 95.0, 40.0 * SG_NM_TO_METER, a1, dummy);
1411 addTestSymbol("vor", "", a1, 0.0, NULL);
1413 SGGeodesy::direct(_pos, 120, 80.0 * SG_NM_TO_METER, a1, dummy);
1415 addTestSymbol("airport", "destination", a1, 0.0, NULL);
1417 SGGeodesy::direct(_pos, 80.0, 20.0 * SG_NM_TO_METER, a1, dummy);
1418 addTestSymbol("fix", "", a1, 0.0, NULL);
1421 SGGeodesy::direct(_pos, 140.0, 20.0 * SG_NM_TO_METER, a1, dummy);
1422 addTestSymbol("fix", "", a1, 0.0, NULL);
1424 SGGeodesy::direct(_pos, 110.0, 10.0 * SG_NM_TO_METER, a1, dummy);
1425 addTestSymbol("fix", "", a1, 0.0, NULL);
1427 SGGeodesy::direct(_pos, 110.0, 5.0 * SG_NM_TO_METER, a1, dummy);
1428 addTestSymbol("fix", "", a1, 0.0, NULL);
1431 void NavDisplay::addRule(SymbolRule* r)
1433 _rules.push_back(r);