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
37 #include <simgear/debug/logstream.hxx>
38 #include <simgear/misc/sg_path.hxx>
40 #include <Main/globals.hxx>
41 #include <Main/fg_props.hxx>
42 #include <Main/viewmgr.hxx>
43 #include <Time/light.hxx>
53 // The number of polygon-offset "units" to place between layers. In
54 // principle, one is supposed to be enough. In practice, I find that
55 // my hardware/driver requires many more.
58 ////////////////////////////////////////////////////////////////////////
60 ////////////////////////////////////////////////////////////////////////
64 * Calculate the aspect adjustment for the panel.
67 get_aspect_adjust (int xsize, int ysize)
69 float ideal_aspect = float(WIN_W) / float(WIN_H);
70 float real_aspect = float(xsize) / float(ysize);
71 return (real_aspect / ideal_aspect);
76 ////////////////////////////////////////////////////////////////////////
78 ////////////////////////////////////////////////////////////////////////
83 if(globals->get_current_panel() == 0)
85 if(globals->get_current_panel()->getVisibility() == 0)
87 if(globals->get_viewmgr()->get_current() != 0)
89 if(globals->get_current_view()->getHeadingOffset_deg() * SGD_DEGREES_TO_RADIANS != 0)
96 ////////////////////////////////////////////////////////////////////////
97 // Implementation of FGTextureManager.
98 ////////////////////////////////////////////////////////////////////////
100 map<string,ssgTexture *> FGTextureManager::_textureMap;
103 FGTextureManager::createTexture (const string &relativePath)
105 ssgTexture * texture = _textureMap[relativePath];
107 SG_LOG( SG_COCKPIT, SG_DEBUG,
108 "Texture " << relativePath << " does not yet exist" );
109 SGPath tpath(globals->get_fg_root());
110 tpath.append(relativePath);
111 texture = new ssgTexture((char *)tpath.c_str(), false, false);
112 _textureMap[relativePath] = texture;
113 if (_textureMap[relativePath] == 0)
114 SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
115 SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath
116 << " handle=" << texture->getHandle() );
125 ////////////////////////////////////////////////////////////////////////
126 // Implementation of FGCropped Texture.
127 ////////////////////////////////////////////////////////////////////////
130 FGCroppedTexture::FGCroppedTexture ()
131 : _path(""), _texture(0),
132 _minX(0.0), _minY(0.0), _maxX(1.0), _maxY(1.0)
137 FGCroppedTexture::FGCroppedTexture (const string &path,
138 float minX, float minY,
139 float maxX, float maxY)
140 : _path(path), _texture(0),
141 _minX(minX), _minY(minY), _maxX(maxX), _maxY(maxY)
146 FGCroppedTexture::~FGCroppedTexture ()
152 FGCroppedTexture::getTexture ()
155 _texture = FGTextureManager::createTexture(_path);
162 ////////////////////////////////////////////////////////////////////////
163 // Implementation of FGPanel.
164 ////////////////////////////////////////////////////////////////////////
166 static fntRenderer text_renderer;
167 static fntTexFont *default_font = 0;
168 static fntTexFont *led_font = 0;
176 _width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
177 _view_height(int(WIN_H * 0.4232)),
178 _visibility(fgGetNode("/sim/panel/visibility", true)),
179 _x_offset(fgGetNode("/sim/panel/x-offset", true)),
180 _y_offset(fgGetNode("/sim/panel/y-offset", true)),
181 _jitter(fgGetNode("/sim/panel/jitter", true)),
182 _flipx(fgGetNode("/sim/panel/flip-x", true)),
183 _xsize_node(fgGetNode("/sim/startup/xsize", true)),
184 _ysize_node(fgGetNode("/sim/startup/ysize", true))
194 for (instrument_list_type::iterator it = _instruments.begin();
195 it != _instruments.end();
204 * Add an instrument to the panel.
207 FGPanel::addInstrument (FGPanelInstrument * instrument)
209 _instruments.push_back(instrument);
214 * Initialize the panel.
220 char* envp = ::getenv( "FG_FONTS" );
221 if ( envp != NULL ) {
222 base_path.set( envp );
224 base_path.set( globals->get_fg_root() );
225 base_path.append( "Fonts" );
230 // Install the default font
232 fntpath.append( "typewriter.txf" );
233 default_font = new fntTexFont ;
234 default_font -> load ( (char *)fntpath.c_str() ) ;
236 // Install the LED font
238 fntpath.append( "led.txf" );
239 led_font = new fntTexFont ;
240 led_font -> load ( (char *)fntpath.c_str() ) ;
245 * Bind panel properties.
250 fgSetArchivable("/sim/panel/visibility");
251 fgSetArchivable("/sim/panel/x-offset");
252 fgSetArchivable("/sim/panel/y-offset");
253 fgSetArchivable("/sim/panel/jitter");
258 * Unbind panel properties.
270 FGPanel::update (double dt)
272 // Do nothing if the panel isn't visible.
273 if ( !fgPanelVisible() ) {
279 // Now, draw the panel
280 float aspect_adjust = get_aspect_adjust(_xsize_node->getIntValue(),
281 _ysize_node->getIntValue());
282 if (aspect_adjust <1.0)
283 update(WIN_X, int(WIN_W * aspect_adjust), WIN_Y, WIN_H);
285 update(WIN_X, WIN_W, WIN_Y, int(WIN_H / aspect_adjust));
289 * Handle repeatable mouse events. Called from update() and from
290 * fgUpdate3DPanels(). This functionality needs to move into the
291 * input subsystem. Counting a tick every two frames is clumsy...
293 void FGPanel::updateMouseDelay()
297 if (_mouseDelay < 0) {
298 _mouseInstrument->doMouseAction(_mouseButton, 0, _mouseX, _mouseY);
306 FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
308 // Calculate accelerations
309 // and jiggle the panel accordingly
310 // The factors and bounds are just
311 // initial guesses; using sqrt smooths
313 double x_offset = _x_offset->getIntValue();
314 double y_offset = _y_offset->getIntValue();
317 if (_jitter->getFloatValue() != 0.0) {
318 double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
319 double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
320 double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
322 double a_zx_pilot = a_z_pilot - a_x_pilot;
324 int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter->getFloatValue())) *
325 (a_y_pilot < 0 ? -1 : 1);
326 int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter->getFloatValue())) *
327 (a_zx_pilot < 0 ? -1 : 1);
329 // adjustments in screen coordinates
330 x_offset += x_adjust;
331 y_offset += y_adjust;
335 glMatrixMode(GL_PROJECTION);
338 if ( _flipx->getBoolValue() ) {
339 gluOrtho2D(winx + winw, winx, winy + winh, winy); /* up side down */
341 gluOrtho2D(winx, winx + winw, winy, winy + winh); /* right side up */
344 glMatrixMode(GL_MODELVIEW);
348 glTranslated(x_offset, y_offset, 0);
352 glMatrixMode(GL_PROJECTION);
354 glMatrixMode(GL_MODELVIEW);
357 ssgForceBasicState();
358 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
364 // In 3D mode, it's possible that we are being drawn exactly on top
365 // of an existing polygon. Use an offset to prevent z-fighting. In
366 // 2D mode, this is a no-op.
367 glEnable(GL_POLYGON_OFFSET_FILL);
368 glPolygonOffset(-1, -POFF_UNITS);
371 glPushAttrib( GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT | GL_LIGHTING_BIT
372 | GL_TEXTURE_BIT | GL_PIXEL_MODE_BIT | GL_CULL_FACE
373 | GL_DEPTH_BUFFER_BIT );
375 // Draw the background
376 glEnable(GL_TEXTURE_2D);
377 glDisable(GL_LIGHTING);
379 glEnable(GL_ALPHA_TEST);
380 glEnable(GL_COLOR_MATERIAL);
381 glEnable(GL_CULL_FACE);
383 glDisable(GL_DEPTH_TEST);
386 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
387 sgCopyVec4( panel_color, l->scene_diffuse());
388 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
389 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
390 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
391 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
393 glColor4fv( panel_color );
395 glBindTexture(GL_TEXTURE_2D, _bg->getHandle());
396 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
397 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
398 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
400 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X, WIN_Y);
401 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + _width, WIN_Y);
402 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + _width, WIN_Y + _height);
403 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X, WIN_Y + _height);
406 for (int i = 0; i < 4; i ++) {
407 // top row of textures...(1,3,5,7)
408 glBindTexture(GL_TEXTURE_2D, _mbg[i*2]->getHandle());
409 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
411 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
412 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
413 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + _height);
414 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + _height);
416 // bottom row of textures...(2,4,6,8)
417 glBindTexture(GL_TEXTURE_2D, _mbg[(i*2)+1]->getHandle());
418 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
420 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y);
421 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y);
422 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
423 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
428 // Draw the instruments.
429 instrument_list_type::const_iterator current = _instruments.begin();
430 instrument_list_type::const_iterator end = _instruments.end();
432 for ( ; current != end; current++) {
433 FGPanelInstrument * instr = *current;
435 glTranslated(instr->getXPos(), instr->getYPos(), 0);
440 // Draw yellow "hotspots" if directed to. This is a panel authoring
441 // feature; not intended to be high performance or to look good.
442 if ( fgGetBool("/sim/panel-hotspots") ) {
443 glDisable(GL_TEXTURE_2D);
446 for ( unsigned int i = 0; i < _instruments.size(); i++ )
447 _instruments[i]->drawHotspots();
451 // restore some original state
453 glPolygonOffset(0, 0);
454 glDisable(GL_POLYGON_OFFSET_FILL);
458 * Set the panel's visibility.
461 FGPanel::setVisibility (bool visibility)
463 _visibility->setBoolValue( visibility );
468 * Return true if the panel is visible.
471 FGPanel::getVisibility () const
473 return _visibility->getBoolValue();
478 * Set the panel's background texture.
481 FGPanel::setBackground (ssgTexture * texture)
487 * Set the panel's multiple background textures.
490 FGPanel::setMultiBackground (ssgTexture * texture, int idx)
497 * Set the panel's x-offset.
500 FGPanel::setXOffset (int offset)
502 if (offset <= 0 && offset >= -_width + WIN_W)
503 _x_offset->setIntValue( offset );
508 * Set the panel's y-offset.
511 FGPanel::setYOffset (int offset)
513 if (offset <= 0 && offset >= -_height)
514 _y_offset->setIntValue( offset );
518 * Handle a mouse action in panel-local (not screen) coordinates.
519 * Used by the 3D panel code in Model/panelnode.cxx, in situations
520 * where the panel doesn't control its own screen location.
523 FGPanel::doLocalMouseAction(int button, int updown, int x, int y)
525 // Note a released button and return
527 if (_mouseInstrument != 0)
528 _mouseInstrument->doMouseAction(_mouseButton, 1, _mouseX, _mouseY);
530 _mouseInstrument = 0;
534 // Search for a matching instrument.
535 for (int i = 0; i < (int)_instruments.size(); i++) {
536 FGPanelInstrument *inst = _instruments[i];
537 int ix = inst->getXPos();
538 int iy = inst->getYPos();
539 int iw = inst->getWidth() / 2;
540 int ih = inst->getHeight() / 2;
541 if (x >= ix - iw && x < ix + iw && y >= iy - ih && y < iy + ih) {
544 _mouseInstrument = inst;
545 _mouseButton = button;
548 // Always do the action once.
549 return _mouseInstrument->doMouseAction(_mouseButton, 0,
557 * Perform a mouse action.
560 FGPanel::doMouseAction (int button, int updown, int x, int y)
562 // FIXME: this same code appears in update()
563 int xsize = _xsize_node->getIntValue();
564 int ysize = _ysize_node->getIntValue();
565 float aspect_adjust = get_aspect_adjust(xsize, ysize);
567 // Scale for the real window size.
568 if (aspect_adjust < 1.0) {
569 x = int(((float)x / xsize) * WIN_W * aspect_adjust);
570 y = int(WIN_H - ((float(y) / ysize) * WIN_H));
572 x = int(((float)x / xsize) * WIN_W);
573 y = int((WIN_H - ((float(y) / ysize) * WIN_H)) / aspect_adjust);
576 // Adjust for offsets.
577 x -= _x_offset->getIntValue();
578 y -= _y_offset->getIntValue();
580 // Having fixed up the coordinates, fall through to the local
581 // coordinate handler.
582 return doLocalMouseAction(button, updown, x, y);
587 ////////////////////////////////////////////////////////////////////////.
588 // Implementation of FGPanelAction.
589 ////////////////////////////////////////////////////////////////////////
591 FGPanelAction::FGPanelAction ()
595 FGPanelAction::FGPanelAction (int button, int x, int y, int w, int h,
597 : _button(button), _x(x), _y(y), _w(w), _h(h), _repeatable(repeatable)
599 for (unsigned int i = 0; i < 2; i++) {
600 for (unsigned int j = 0; j < _bindings[i].size(); j++)
601 delete _bindings[i][j];
605 FGPanelAction::~FGPanelAction ()
610 FGPanelAction::addBinding (FGBinding * binding, int updown)
612 _bindings[updown].push_back(binding);
616 FGPanelAction::doAction (int updown)
619 if ((updown != _last_state) || (updown == 0 && _repeatable)) {
620 int nBindings = _bindings[updown].size();
621 for (int i = 0; i < nBindings; i++)
622 _bindings[updown][i]->fire();
624 _last_state = updown;
633 ////////////////////////////////////////////////////////////////////////
634 // Implementation of FGPanelTransformation.
635 ////////////////////////////////////////////////////////////////////////
637 FGPanelTransformation::FGPanelTransformation ()
642 FGPanelTransformation::~FGPanelTransformation ()
649 ////////////////////////////////////////////////////////////////////////
650 // Implementation of FGPanelInstrument.
651 ////////////////////////////////////////////////////////////////////////
654 FGPanelInstrument::FGPanelInstrument ()
660 FGPanelInstrument::FGPanelInstrument (int x, int y, int w, int h)
666 FGPanelInstrument::~FGPanelInstrument ()
668 for (action_list_type::iterator it = _actions.begin();
669 it != _actions.end();
677 FGPanelInstrument::drawHotspots()
679 for ( unsigned int i = 0; i < _actions.size(); i++ ) {
680 FGPanelAction* a = _actions[i];
681 float x1 = getXPos() + a->getX();
682 float x2 = x1 + a->getWidth();
683 float y1 = getYPos() + a->getY();
684 float y2 = y1 + a->getHeight();
686 glBegin(GL_LINE_LOOP);
696 FGPanelInstrument::setPosition (int x, int y)
703 FGPanelInstrument::setSize (int w, int h)
710 FGPanelInstrument::getXPos () const
716 FGPanelInstrument::getYPos () const
722 FGPanelInstrument::getWidth () const
728 FGPanelInstrument::getHeight () const
734 FGPanelInstrument::addAction (FGPanelAction * action)
736 _actions.push_back(action);
739 // Coordinates relative to centre.
741 FGPanelInstrument::doMouseAction (int button, int updown, int x, int y)
744 action_list_type::iterator it = _actions.begin();
745 action_list_type::iterator last = _actions.end();
746 for ( ; it != last; it++) {
747 if ((*it)->inArea(button, x, y) &&
748 (*it)->doAction(updown))
757 ////////////////////////////////////////////////////////////////////////
758 // Implementation of FGLayeredInstrument.
759 ////////////////////////////////////////////////////////////////////////
761 FGLayeredInstrument::FGLayeredInstrument (int x, int y, int w, int h)
762 : FGPanelInstrument(x, y, w, h)
766 FGLayeredInstrument::~FGLayeredInstrument ()
768 for (layer_list::iterator it = _layers.begin(); it != _layers.end(); it++) {
775 FGLayeredInstrument::draw ()
780 for (int i = 0; i < (int)_layers.size(); i++) {
788 FGLayeredInstrument::addLayer (FGInstrumentLayer *layer)
790 int n = _layers.size();
791 if (layer->getWidth() == -1) {
792 layer->setWidth(getWidth());
794 if (layer->getHeight() == -1) {
795 layer->setHeight(getHeight());
797 _layers.push_back(layer);
802 FGLayeredInstrument::addLayer (FGCroppedTexture &texture,
805 return addLayer(new FGTexturedLayer(texture, w, h));
809 FGLayeredInstrument::addTransformation (FGPanelTransformation * transformation)
811 int layer = _layers.size() - 1;
812 _layers[layer]->addTransformation(transformation);
817 ////////////////////////////////////////////////////////////////////////
818 // Implementation of FGInstrumentLayer.
819 ////////////////////////////////////////////////////////////////////////
821 FGInstrumentLayer::FGInstrumentLayer (int w, int h)
827 FGInstrumentLayer::~FGInstrumentLayer ()
829 for (transformation_list::iterator it = _transformations.begin();
830 it != _transformations.end();
838 FGInstrumentLayer::transform () const
840 transformation_list::const_iterator it = _transformations.begin();
841 transformation_list::const_iterator last = _transformations.end();
843 FGPanelTransformation *t = *it;
845 float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
848 val = fmod(val, t->mod);
851 } else if (val > t->max) {
856 val = val * t->factor + t->offset;
858 val = t->table->interpolate(val) * t->factor + t->offset;
862 case FGPanelTransformation::XSHIFT:
863 glTranslatef(val, 0.0, 0.0);
865 case FGPanelTransformation::YSHIFT:
866 glTranslatef(0.0, val, 0.0);
868 case FGPanelTransformation::ROTATION:
869 glRotatef(-val, 0.0, 0.0, 1.0);
878 FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
880 _transformations.push_back(transformation);
885 ////////////////////////////////////////////////////////////////////////
886 // Implementation of FGGroupLayer.
887 ////////////////////////////////////////////////////////////////////////
889 FGGroupLayer::FGGroupLayer ()
893 FGGroupLayer::~FGGroupLayer ()
895 for (unsigned int i = 0; i < _layers.size(); i++)
900 FGGroupLayer::draw ()
904 int nLayers = _layers.size();
905 for (int i = 0; i < nLayers; i++)
911 FGGroupLayer::addLayer (FGInstrumentLayer * layer)
913 _layers.push_back(layer);
918 ////////////////////////////////////////////////////////////////////////
919 // Implementation of FGTexturedLayer.
920 ////////////////////////////////////////////////////////////////////////
923 FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
924 : FGInstrumentLayer(w, h)
930 FGTexturedLayer::~FGTexturedLayer ()
936 FGTexturedLayer::draw ()
943 glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
946 // From Curt: turn on the panel
947 // lights after sundown.
950 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
951 sgCopyVec4( panel_color, l->scene_diffuse());
952 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
953 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
954 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
955 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
957 glColor4fv( panel_color );
959 glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
960 glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
961 glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
962 glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
969 ////////////////////////////////////////////////////////////////////////
970 // Implementation of FGTextLayer.
971 ////////////////////////////////////////////////////////////////////////
973 FGTextLayer::FGTextLayer (int w, int h)
974 : FGInstrumentLayer(w, h), _pointSize(14.0), _font_name("default")
977 _color[0] = _color[1] = _color[2] = 0.0;
981 FGTextLayer::~FGTextLayer ()
983 chunk_list::iterator it = _chunks.begin();
984 chunk_list::iterator last = _chunks.end();
985 for ( ; it != last; it++) {
996 if ( _font_name == "led" && led_font != 0) {
997 text_renderer.setFont(led_font);
999 text_renderer.setFont(guiFntHandle);
1001 text_renderer.setPointSize(_pointSize);
1002 text_renderer.begin();
1003 text_renderer.start3f(0, 0, 0);
1006 long diff = _now - _then;
1008 if (diff > 100000 || diff < 0 ) {
1009 // ( diff < 0 ) is a sanity check and indicates our time stamp
1010 // difference math probably overflowed. We can handle a max
1011 // difference of 35.8 minutes since the returned value is in
1012 // usec. So if the panel is left off longer than that we can
1013 // over flow the math with it is turned back on. This (diff <
1014 // 0) catches that situation, get's us out of trouble, and
1020 // Something is goofy. The code in this file renders only CCW
1021 // polygons, and I have verified that the font code in plib
1022 // renders only CCW trianbles. Yet they come out backwards.
1023 // Something around here or in plib is either changing the winding
1024 // order or (more likely) pushing a left-handed matrix onto the
1025 // stack. But I can't find it; get out the chainsaw...
1027 text_renderer.puts((char *)(_value.c_str()));
1028 glFrontFace(GL_CCW);
1030 text_renderer.end();
1031 glColor4f(1.0, 1.0, 1.0, 1.0); // FIXME
1036 FGTextLayer::addChunk (FGTextLayer::Chunk * chunk)
1038 _chunks.push_back(chunk);
1042 FGTextLayer::setColor (float r, float g, float b)
1051 FGTextLayer::setPointSize (float size)
1057 FGTextLayer::setFontName(const string &name)
1064 FGTextLayer::setFont(fntFont * font)
1066 text_renderer.setFont(font);
1071 FGTextLayer::recalc_value () const
1074 chunk_list::const_iterator it = _chunks.begin();
1075 chunk_list::const_iterator last = _chunks.end();
1076 for ( ; it != last; it++) {
1077 _value += (*it)->getValue();
1083 ////////////////////////////////////////////////////////////////////////
1084 // Implementation of FGTextLayer::Chunk.
1085 ////////////////////////////////////////////////////////////////////////
1087 FGTextLayer::Chunk::Chunk (const string &text, const string &fmt)
1088 : _type(FGTextLayer::TEXT), _fmt(fmt)
1095 FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
1096 const string &fmt, float mult, float offs,
1098 : _type(type), _fmt(fmt), _mult(mult), _offs(offs), _trunc(truncation)
1101 if (type == TEXT_VALUE)
1110 FGTextLayer::Chunk::getValue () const
1116 sprintf(_buf, _fmt.c_str(), _text.c_str());
1119 sprintf(_buf, _fmt.c_str(), _node->getStringValue());
1122 double d = _offs + _node->getFloatValue() * _mult;
1123 if (_trunc) d = (d < 0) ? -floor(-d) : floor(d);
1124 sprintf(_buf, _fmt.c_str(), d);
1135 ////////////////////////////////////////////////////////////////////////
1136 // Implementation of FGSwitchLayer.
1137 ////////////////////////////////////////////////////////////////////////
1139 FGSwitchLayer::FGSwitchLayer ()
1145 FGSwitchLayer::draw ()
1149 int nLayers = _layers.size();
1150 for (int i = 0; i < nLayers; i++) {
1151 if (_layers[i]->test()) {