1 // panel.cxx - default, 2D single-engine prop instrument panel
3 // Written by David Megginson, started January 2000.
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <stdio.h> // sprintf
35 #include <simgear/debug/logstream.hxx>
36 #include <simgear/misc/sg_path.hxx>
38 #include <Main/globals.hxx>
39 #include <Main/fg_props.hxx>
40 #include <Main/viewmgr.hxx>
41 #include <Time/light.hxx>
51 // The number of polygon-offset "units" to place between layers. In
52 // principle, one is supposed to be enough. In practice, I find that
53 // my hardware/driver requires many more.
56 ////////////////////////////////////////////////////////////////////////
58 ////////////////////////////////////////////////////////////////////////
62 * Calculate the aspect adjustment for the panel.
65 get_aspect_adjust (int xsize, int ysize)
67 float ideal_aspect = float(WIN_W) / float(WIN_H);
68 float real_aspect = float(xsize) / float(ysize);
69 return (real_aspect / ideal_aspect);
74 ////////////////////////////////////////////////////////////////////////
76 ////////////////////////////////////////////////////////////////////////
81 if(globals->get_current_panel() == 0)
83 if(globals->get_current_panel()->getVisibility() == 0)
85 if(globals->get_viewmgr()->get_current() != 0)
87 if(globals->get_current_view()->getHeadingOffset_deg() * SGD_DEGREES_TO_RADIANS != 0)
94 ////////////////////////////////////////////////////////////////////////
95 // Implementation of FGTextureManager.
96 ////////////////////////////////////////////////////////////////////////
98 map<string,ssgTexture *> FGTextureManager::_textureMap;
101 FGTextureManager::createTexture (const string &relativePath)
103 ssgTexture * texture = _textureMap[relativePath];
105 SG_LOG( SG_COCKPIT, SG_DEBUG,
106 "Texture " << relativePath << " does not yet exist" );
107 SGPath tpath(globals->get_fg_root());
108 tpath.append(relativePath);
109 texture = new ssgTexture((char *)tpath.c_str(), false, false);
110 _textureMap[relativePath] = texture;
111 if (_textureMap[relativePath] == 0)
112 SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
113 SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath
114 << " handle=" << texture->getHandle() );
123 ////////////////////////////////////////////////////////////////////////
124 // Implementation of FGCropped Texture.
125 ////////////////////////////////////////////////////////////////////////
128 FGCroppedTexture::FGCroppedTexture ()
129 : _path(""), _texture(0),
130 _minX(0.0), _minY(0.0), _maxX(1.0), _maxY(1.0)
135 FGCroppedTexture::FGCroppedTexture (const string &path,
136 float minX, float minY,
137 float maxX, float maxY)
138 : _path(path), _texture(0),
139 _minX(minX), _minY(minY), _maxX(maxX), _maxY(maxY)
144 FGCroppedTexture::~FGCroppedTexture ()
150 FGCroppedTexture::getTexture ()
153 _texture = FGTextureManager::createTexture(_path);
160 ////////////////////////////////////////////////////////////////////////
161 // Implementation of FGPanel.
162 ////////////////////////////////////////////////////////////////////////
164 static fntRenderer text_renderer;
165 static fntTexFont *default_font = 0;
166 static fntTexFont *led_font = 0;
174 _width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
175 _view_height(int(WIN_H * 0.4232)),
176 _visibility(fgGetNode("/sim/panel/visibility", true)),
177 _x_offset(fgGetNode("/sim/panel/x-offset", true)),
178 _y_offset(fgGetNode("/sim/panel/y-offset", true)),
179 _jitter(fgGetNode("/sim/panel/jitter", true)),
180 _flipx(fgGetNode("/sim/panel/flip-x", true)),
181 _xsize_node(fgGetNode("/sim/startup/xsize", true)),
182 _ysize_node(fgGetNode("/sim/startup/ysize", true))
192 for (instrument_list_type::iterator it = _instruments.begin();
193 it != _instruments.end();
202 * Add an instrument to the panel.
205 FGPanel::addInstrument (FGPanelInstrument * instrument)
207 _instruments.push_back(instrument);
212 * Initialize the panel.
218 char* envp = ::getenv( "FG_FONTS" );
219 if ( envp != NULL ) {
220 base_path.set( envp );
222 base_path.set( globals->get_fg_root() );
223 base_path.append( "Fonts" );
228 // Install the default font
230 fntpath.append( "typewriter.txf" );
231 default_font = new fntTexFont ;
232 default_font -> load ( (char *)fntpath.c_str() ) ;
234 // Install the LED font
236 fntpath.append( "led.txf" );
237 led_font = new fntTexFont ;
238 led_font -> load ( (char *)fntpath.c_str() ) ;
243 * Bind panel properties.
248 fgSetArchivable("/sim/panel/visibility");
249 fgSetArchivable("/sim/panel/x-offset");
250 fgSetArchivable("/sim/panel/y-offset");
251 fgSetArchivable("/sim/panel/jitter");
256 * Unbind panel properties.
268 FGPanel::update (double dt)
270 // Do nothing if the panel isn't visible.
271 if ( !fgPanelVisible() ) {
277 // Now, draw the panel
278 float aspect_adjust = get_aspect_adjust(_xsize_node->getIntValue(),
279 _ysize_node->getIntValue());
280 if (aspect_adjust <1.0)
281 update(WIN_X, int(WIN_W * aspect_adjust), WIN_Y, WIN_H);
283 update(WIN_X, WIN_W, WIN_Y, int(WIN_H / aspect_adjust));
287 * Handle repeatable mouse events. Called from update() and from
288 * fgUpdate3DPanels(). This functionality needs to move into the
289 * input subsystem. Counting a tick every two frames is clumsy...
291 void FGPanel::updateMouseDelay()
295 if (_mouseDelay < 0) {
296 _mouseInstrument->doMouseAction(_mouseButton, 0, _mouseX, _mouseY);
304 FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
306 // Calculate accelerations
307 // and jiggle the panel accordingly
308 // The factors and bounds are just
309 // initial guesses; using sqrt smooths
311 double x_offset = _x_offset->getIntValue();
312 double y_offset = _y_offset->getIntValue();
315 if (_jitter->getFloatValue() != 0.0) {
316 double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
317 double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
318 double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
320 double a_zx_pilot = a_z_pilot - a_x_pilot;
322 int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter->getFloatValue())) *
323 (a_y_pilot < 0 ? -1 : 1);
324 int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter->getFloatValue())) *
325 (a_zx_pilot < 0 ? -1 : 1);
327 // adjustments in screen coordinates
328 x_offset += x_adjust;
329 y_offset += y_adjust;
333 glMatrixMode(GL_PROJECTION);
336 if ( _flipx->getBoolValue() ) {
337 gluOrtho2D(winx + winw, winx, winy + winh, winy); /* up side down */
339 gluOrtho2D(winx, winx + winw, winy, winy + winh); /* right side up */
342 glMatrixMode(GL_MODELVIEW);
346 glTranslated(x_offset, y_offset, 0);
350 glMatrixMode(GL_PROJECTION);
352 glMatrixMode(GL_MODELVIEW);
355 ssgForceBasicState();
356 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
362 // In 3D mode, it's possible that we are being drawn exactly on top
363 // of an existing polygon. Use an offset to prevent z-fighting. In
364 // 2D mode, this is a no-op.
365 glEnable(GL_POLYGON_OFFSET_FILL);
366 glPolygonOffset(-1, -POFF_UNITS);
369 glPushAttrib( GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT | GL_LIGHTING_BIT
370 | GL_TEXTURE_BIT | GL_PIXEL_MODE_BIT | GL_CULL_FACE
371 | GL_DEPTH_BUFFER_BIT );
373 // Draw the background
374 glEnable(GL_TEXTURE_2D);
375 glDisable(GL_LIGHTING);
377 glEnable(GL_ALPHA_TEST);
378 glEnable(GL_COLOR_MATERIAL);
379 glEnable(GL_CULL_FACE);
381 glDisable(GL_DEPTH_TEST);
384 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
385 sgCopyVec4( panel_color, l->scene_diffuse());
386 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
387 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
388 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
389 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
391 glColor4fv( panel_color );
393 glBindTexture(GL_TEXTURE_2D, _bg->getHandle());
394 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
395 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
396 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
398 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X, WIN_Y);
399 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + _width, WIN_Y);
400 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + _width, WIN_Y + _height);
401 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X, WIN_Y + _height);
404 for (int i = 0; i < 4; i ++) {
405 // top row of textures...(1,3,5,7)
406 glBindTexture(GL_TEXTURE_2D, _mbg[i*2]->getHandle());
407 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
409 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
410 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
411 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + _height);
412 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + _height);
414 // bottom row of textures...(2,4,6,8)
415 glBindTexture(GL_TEXTURE_2D, _mbg[(i*2)+1]->getHandle());
416 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
418 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y);
419 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y);
420 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
421 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
426 // Draw the instruments.
427 instrument_list_type::const_iterator current = _instruments.begin();
428 instrument_list_type::const_iterator end = _instruments.end();
430 for ( ; current != end; current++) {
431 FGPanelInstrument * instr = *current;
433 glTranslated(instr->getXPos(), instr->getYPos(), 0);
438 // Draw yellow "hotspots" if directed to. This is a panel authoring
439 // feature; not intended to be high performance or to look good.
440 if ( fgGetBool("/sim/panel-hotspots") ) {
441 glDisable(GL_TEXTURE_2D);
444 for ( unsigned int i = 0; i < _instruments.size(); i++ )
445 _instruments[i]->drawHotspots();
449 // restore some original state
451 glPolygonOffset(0, 0);
452 glDisable(GL_POLYGON_OFFSET_FILL);
456 * Set the panel's visibility.
459 FGPanel::setVisibility (bool visibility)
461 _visibility->setBoolValue( visibility );
466 * Return true if the panel is visible.
469 FGPanel::getVisibility () const
471 return _visibility->getBoolValue();
476 * Set the panel's background texture.
479 FGPanel::setBackground (ssgTexture * texture)
485 * Set the panel's multiple background textures.
488 FGPanel::setMultiBackground (ssgTexture * texture, int idx)
495 * Set the panel's x-offset.
498 FGPanel::setXOffset (int offset)
500 if (offset <= 0 && offset >= -_width + WIN_W)
501 _x_offset->setIntValue( offset );
506 * Set the panel's y-offset.
509 FGPanel::setYOffset (int offset)
511 if (offset <= 0 && offset >= -_height)
512 _y_offset->setIntValue( offset );
516 * Handle a mouse action in panel-local (not screen) coordinates.
517 * Used by the 3D panel code in Model/panelnode.cxx, in situations
518 * where the panel doesn't control its own screen location.
521 FGPanel::doLocalMouseAction(int button, int updown, int x, int y)
523 // Note a released button and return
525 if (_mouseInstrument != 0)
526 _mouseInstrument->doMouseAction(_mouseButton, 1, _mouseX, _mouseY);
528 _mouseInstrument = 0;
532 // Search for a matching instrument.
533 for (int i = 0; i < (int)_instruments.size(); i++) {
534 FGPanelInstrument *inst = _instruments[i];
535 int ix = inst->getXPos();
536 int iy = inst->getYPos();
537 int iw = inst->getWidth() / 2;
538 int ih = inst->getHeight() / 2;
539 if (x >= ix - iw && x < ix + iw && y >= iy - ih && y < iy + ih) {
542 _mouseInstrument = inst;
543 _mouseButton = button;
546 // Always do the action once.
547 return _mouseInstrument->doMouseAction(_mouseButton, 0,
555 * Perform a mouse action.
558 FGPanel::doMouseAction (int button, int updown, int x, int y)
560 // FIXME: this same code appears in update()
561 int xsize = _xsize_node->getIntValue();
562 int ysize = _ysize_node->getIntValue();
563 float aspect_adjust = get_aspect_adjust(xsize, ysize);
565 // Scale for the real window size.
566 if (aspect_adjust < 1.0) {
567 x = int(((float)x / xsize) * WIN_W * aspect_adjust);
568 y = int(WIN_H - ((float(y) / ysize) * WIN_H));
570 x = int(((float)x / xsize) * WIN_W);
571 y = int((WIN_H - ((float(y) / ysize) * WIN_H)) / aspect_adjust);
574 // Adjust for offsets.
575 x -= _x_offset->getIntValue();
576 y -= _y_offset->getIntValue();
578 // Having fixed up the coordinates, fall through to the local
579 // coordinate handler.
580 return doLocalMouseAction(button, updown, x, y);
585 ////////////////////////////////////////////////////////////////////////.
586 // Implementation of FGPanelAction.
587 ////////////////////////////////////////////////////////////////////////
589 FGPanelAction::FGPanelAction ()
593 FGPanelAction::FGPanelAction (int button, int x, int y, int w, int h,
595 : _button(button), _x(x), _y(y), _w(w), _h(h), _repeatable(repeatable)
597 for (unsigned int i = 0; i < 2; i++) {
598 for (unsigned int j = 0; j < _bindings[i].size(); j++)
599 delete _bindings[i][j];
603 FGPanelAction::~FGPanelAction ()
608 FGPanelAction::addBinding (FGBinding * binding, int updown)
610 _bindings[updown].push_back(binding);
614 FGPanelAction::doAction (int updown)
617 if ((updown != _last_state) || (updown == 0 && _repeatable)) {
618 int nBindings = _bindings[updown].size();
619 for (int i = 0; i < nBindings; i++)
620 _bindings[updown][i]->fire();
622 _last_state = updown;
631 ////////////////////////////////////////////////////////////////////////
632 // Implementation of FGPanelTransformation.
633 ////////////////////////////////////////////////////////////////////////
635 FGPanelTransformation::FGPanelTransformation ()
640 FGPanelTransformation::~FGPanelTransformation ()
647 ////////////////////////////////////////////////////////////////////////
648 // Implementation of FGPanelInstrument.
649 ////////////////////////////////////////////////////////////////////////
652 FGPanelInstrument::FGPanelInstrument ()
658 FGPanelInstrument::FGPanelInstrument (int x, int y, int w, int h)
664 FGPanelInstrument::~FGPanelInstrument ()
666 for (action_list_type::iterator it = _actions.begin();
667 it != _actions.end();
675 FGPanelInstrument::drawHotspots()
677 for ( unsigned int i = 0; i < _actions.size(); i++ ) {
678 FGPanelAction* a = _actions[i];
679 float x1 = getXPos() + a->getX();
680 float x2 = x1 + a->getWidth();
681 float y1 = getYPos() + a->getY();
682 float y2 = y1 + a->getHeight();
684 glBegin(GL_LINE_LOOP);
694 FGPanelInstrument::setPosition (int x, int y)
701 FGPanelInstrument::setSize (int w, int h)
708 FGPanelInstrument::getXPos () const
714 FGPanelInstrument::getYPos () const
720 FGPanelInstrument::getWidth () const
726 FGPanelInstrument::getHeight () const
732 FGPanelInstrument::addAction (FGPanelAction * action)
734 _actions.push_back(action);
737 // Coordinates relative to centre.
739 FGPanelInstrument::doMouseAction (int button, int updown, int x, int y)
742 action_list_type::iterator it = _actions.begin();
743 action_list_type::iterator last = _actions.end();
744 for ( ; it != last; it++) {
745 if ((*it)->inArea(button, x, y) &&
746 (*it)->doAction(updown))
755 ////////////////////////////////////////////////////////////////////////
756 // Implementation of FGLayeredInstrument.
757 ////////////////////////////////////////////////////////////////////////
759 FGLayeredInstrument::FGLayeredInstrument (int x, int y, int w, int h)
760 : FGPanelInstrument(x, y, w, h)
764 FGLayeredInstrument::~FGLayeredInstrument ()
766 for (layer_list::iterator it = _layers.begin(); it != _layers.end(); it++) {
773 FGLayeredInstrument::draw ()
778 for (int i = 0; i < (int)_layers.size(); i++) {
786 FGLayeredInstrument::addLayer (FGInstrumentLayer *layer)
788 int n = _layers.size();
789 if (layer->getWidth() == -1) {
790 layer->setWidth(getWidth());
792 if (layer->getHeight() == -1) {
793 layer->setHeight(getHeight());
795 _layers.push_back(layer);
800 FGLayeredInstrument::addLayer (FGCroppedTexture &texture,
803 return addLayer(new FGTexturedLayer(texture, w, h));
807 FGLayeredInstrument::addTransformation (FGPanelTransformation * transformation)
809 int layer = _layers.size() - 1;
810 _layers[layer]->addTransformation(transformation);
815 ////////////////////////////////////////////////////////////////////////
816 // Implementation of FGInstrumentLayer.
817 ////////////////////////////////////////////////////////////////////////
819 FGInstrumentLayer::FGInstrumentLayer (int w, int h)
825 FGInstrumentLayer::~FGInstrumentLayer ()
827 for (transformation_list::iterator it = _transformations.begin();
828 it != _transformations.end();
836 FGInstrumentLayer::transform () const
838 transformation_list::const_iterator it = _transformations.begin();
839 transformation_list::const_iterator last = _transformations.end();
841 FGPanelTransformation *t = *it;
843 float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
846 val = fmod(val, t->mod);
849 } else if (val > t->max) {
854 val = val * t->factor + t->offset;
856 val = t->table->interpolate(val) * t->factor + t->offset;
860 case FGPanelTransformation::XSHIFT:
861 glTranslatef(val, 0.0, 0.0);
863 case FGPanelTransformation::YSHIFT:
864 glTranslatef(0.0, val, 0.0);
866 case FGPanelTransformation::ROTATION:
867 glRotatef(-val, 0.0, 0.0, 1.0);
876 FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
878 _transformations.push_back(transformation);
883 ////////////////////////////////////////////////////////////////////////
884 // Implementation of FGGroupLayer.
885 ////////////////////////////////////////////////////////////////////////
887 FGGroupLayer::FGGroupLayer ()
891 FGGroupLayer::~FGGroupLayer ()
893 for (unsigned int i = 0; i < _layers.size(); i++)
898 FGGroupLayer::draw ()
902 int nLayers = _layers.size();
903 for (int i = 0; i < nLayers; i++)
909 FGGroupLayer::addLayer (FGInstrumentLayer * layer)
911 _layers.push_back(layer);
916 ////////////////////////////////////////////////////////////////////////
917 // Implementation of FGTexturedLayer.
918 ////////////////////////////////////////////////////////////////////////
921 FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
922 : FGInstrumentLayer(w, h)
928 FGTexturedLayer::~FGTexturedLayer ()
934 FGTexturedLayer::draw ()
941 glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
944 // From Curt: turn on the panel
945 // lights after sundown.
948 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
949 sgCopyVec4( panel_color, l->scene_diffuse());
950 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
951 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
952 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
953 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
955 glColor4fv( panel_color );
957 glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
958 glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
959 glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
960 glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
967 ////////////////////////////////////////////////////////////////////////
968 // Implementation of FGTextLayer.
969 ////////////////////////////////////////////////////////////////////////
971 FGTextLayer::FGTextLayer (int w, int h)
972 : FGInstrumentLayer(w, h), _pointSize(14.0), _font_name("default")
975 _color[0] = _color[1] = _color[2] = 0.0;
979 FGTextLayer::~FGTextLayer ()
981 chunk_list::iterator it = _chunks.begin();
982 chunk_list::iterator last = _chunks.end();
983 for ( ; it != last; it++) {
994 if ( _font_name == "led" && led_font != 0) {
995 text_renderer.setFont(led_font);
997 text_renderer.setFont(guiFntHandle);
999 text_renderer.setPointSize(_pointSize);
1000 text_renderer.begin();
1001 text_renderer.start3f(0, 0, 0);
1004 long diff = _now - _then;
1006 if (diff > 100000 || diff < 0 ) {
1007 // ( diff < 0 ) is a sanity check and indicates our time stamp
1008 // difference math probably overflowed. We can handle a max
1009 // difference of 35.8 minutes since the returned value is in
1010 // usec. So if the panel is left off longer than that we can
1011 // over flow the math with it is turned back on. This (diff <
1012 // 0) catches that situation, get's us out of trouble, and
1018 // Something is goofy. The code in this file renders only CCW
1019 // polygons, and I have verified that the font code in plib
1020 // renders only CCW trianbles. Yet they come out backwards.
1021 // Something around here or in plib is either changing the winding
1022 // order or (more likely) pushing a left-handed matrix onto the
1023 // stack. But I can't find it; get out the chainsaw...
1025 text_renderer.puts((char *)(_value.c_str()));
1026 glFrontFace(GL_CCW);
1028 text_renderer.end();
1029 glColor4f(1.0, 1.0, 1.0, 1.0); // FIXME
1034 FGTextLayer::addChunk (FGTextLayer::Chunk * chunk)
1036 _chunks.push_back(chunk);
1040 FGTextLayer::setColor (float r, float g, float b)
1049 FGTextLayer::setPointSize (float size)
1055 FGTextLayer::setFontName(const string &name)
1062 FGTextLayer::setFont(fntFont * font)
1064 text_renderer.setFont(font);
1069 FGTextLayer::recalc_value () const
1072 chunk_list::const_iterator it = _chunks.begin();
1073 chunk_list::const_iterator last = _chunks.end();
1074 for ( ; it != last; it++) {
1075 _value += (*it)->getValue();
1081 ////////////////////////////////////////////////////////////////////////
1082 // Implementation of FGTextLayer::Chunk.
1083 ////////////////////////////////////////////////////////////////////////
1085 FGTextLayer::Chunk::Chunk (const string &text, const string &fmt)
1086 : _type(FGTextLayer::TEXT), _fmt(fmt)
1093 FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
1094 const string &fmt, float mult, float offs,
1096 : _type(type), _fmt(fmt), _mult(mult), _offs(offs), _trunc(truncation)
1099 if (type == TEXT_VALUE)
1108 FGTextLayer::Chunk::getValue () const
1114 sprintf(_buf, _fmt.c_str(), _text.c_str());
1117 sprintf(_buf, _fmt.c_str(), _node->getStringValue());
1120 double d = _offs + _node->getFloatValue() * _mult;
1121 if (_trunc) d = (d < 0) ? -floor(-d) : floor(d);
1122 sprintf(_buf, _fmt.c_str(), d);
1133 ////////////////////////////////////////////////////////////////////////
1134 // Implementation of FGSwitchLayer.
1135 ////////////////////////////////////////////////////////////////////////
1137 FGSwitchLayer::FGSwitchLayer ()
1143 FGSwitchLayer::draw ()
1147 int nLayers = _layers.size();
1148 for (int i = 0; i < nLayers; i++) {
1149 if (_layers[i]->test()) {