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.
57 inline float truncf (float d) {
58 return (d < 0) ? -floorf(-d) : floorf(d);
63 ////////////////////////////////////////////////////////////////////////
65 ////////////////////////////////////////////////////////////////////////
69 * Calculate the aspect adjustment for the panel.
72 get_aspect_adjust (int xsize, int ysize)
74 float ideal_aspect = float(WIN_W) / float(WIN_H);
75 float real_aspect = float(xsize) / float(ysize);
76 return (real_aspect / ideal_aspect);
81 ////////////////////////////////////////////////////////////////////////
83 ////////////////////////////////////////////////////////////////////////
88 if(globals->get_current_panel() == 0)
90 if(globals->get_current_panel()->getVisibility() == 0)
92 if(globals->get_viewmgr()->get_current() != 0)
94 if(globals->get_current_view()->getHeadingOffset_deg() * SGD_DEGREES_TO_RADIANS != 0)
101 ////////////////////////////////////////////////////////////////////////
102 // Implementation of FGTextureManager.
103 ////////////////////////////////////////////////////////////////////////
105 map<string,ssgTexture *> FGTextureManager::_textureMap;
108 FGTextureManager::createTexture (const string &relativePath)
110 ssgTexture * texture = _textureMap[relativePath];
112 SG_LOG( SG_COCKPIT, SG_DEBUG,
113 "Texture " << relativePath << " does not yet exist" );
114 SGPath tpath(globals->get_fg_root());
115 tpath.append(relativePath);
116 texture = new ssgTexture((char *)tpath.c_str(), false, false);
117 _textureMap[relativePath] = texture;
118 if (_textureMap[relativePath] == 0)
119 SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
120 SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath
121 << " handle=" << texture->getHandle() );
130 ////////////////////////////////////////////////////////////////////////
131 // Implementation of FGCropped Texture.
132 ////////////////////////////////////////////////////////////////////////
135 FGCroppedTexture::FGCroppedTexture ()
136 : _path(""), _texture(0),
137 _minX(0.0), _minY(0.0), _maxX(1.0), _maxY(1.0)
142 FGCroppedTexture::FGCroppedTexture (const string &path,
143 float minX, float minY,
144 float maxX, float maxY)
145 : _path(path), _texture(0),
146 _minX(minX), _minY(minY), _maxX(maxX), _maxY(maxY)
151 FGCroppedTexture::~FGCroppedTexture ()
157 FGCroppedTexture::getTexture ()
160 _texture = FGTextureManager::createTexture(_path);
167 ////////////////////////////////////////////////////////////////////////
168 // Implementation of FGPanel.
169 ////////////////////////////////////////////////////////////////////////
171 static fntRenderer text_renderer;
172 static fntTexFont *default_font = 0;
173 static fntTexFont *led_font = 0;
181 _width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
182 _view_height(int(WIN_H * 0.4232)),
183 _visibility(fgGetNode("/sim/panel/visibility", true)),
184 _x_offset(fgGetNode("/sim/panel/x-offset", true)),
185 _y_offset(fgGetNode("/sim/panel/y-offset", true)),
186 _jitter(fgGetNode("/sim/panel/jitter", true)),
187 _flipx(fgGetNode("/sim/panel/flip-x", true)),
188 _xsize_node(fgGetNode("/sim/startup/xsize", true)),
189 _ysize_node(fgGetNode("/sim/startup/ysize", true))
199 for (instrument_list_type::iterator it = _instruments.begin();
200 it != _instruments.end();
209 * Add an instrument to the panel.
212 FGPanel::addInstrument (FGPanelInstrument * instrument)
214 _instruments.push_back(instrument);
219 * Initialize the panel.
225 char* envp = ::getenv( "FG_FONTS" );
226 if ( envp != NULL ) {
227 base_path.set( envp );
229 base_path.set( globals->get_fg_root() );
230 base_path.append( "Fonts" );
235 // Install the default font
237 fntpath.append( "typewriter.txf" );
238 default_font = new fntTexFont ;
239 default_font -> load ( (char *)fntpath.c_str() ) ;
241 // Install the LED font
243 fntpath.append( "led.txf" );
244 led_font = new fntTexFont ;
245 led_font -> load ( (char *)fntpath.c_str() ) ;
250 * Bind panel properties.
255 fgSetArchivable("/sim/panel/visibility");
256 fgSetArchivable("/sim/panel/x-offset");
257 fgSetArchivable("/sim/panel/y-offset");
258 fgSetArchivable("/sim/panel/jitter");
263 * Unbind panel properties.
275 FGPanel::update (double dt)
277 // Do nothing if the panel isn't visible.
278 if ( !fgPanelVisible() ) {
284 // Now, draw the panel
285 float aspect_adjust = get_aspect_adjust(_xsize_node->getIntValue(),
286 _ysize_node->getIntValue());
287 if (aspect_adjust <1.0)
288 update(WIN_X, int(WIN_W * aspect_adjust), WIN_Y, WIN_H);
290 update(WIN_X, WIN_W, WIN_Y, int(WIN_H / aspect_adjust));
294 * Handle repeatable mouse events. Called from update() and from
295 * fgUpdate3DPanels(). This functionality needs to move into the
296 * input subsystem. Counting a tick every two frames is clumsy...
298 void FGPanel::updateMouseDelay()
302 if (_mouseDelay < 0) {
303 _mouseInstrument->doMouseAction(_mouseButton, 0, _mouseX, _mouseY);
311 FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
313 // Calculate accelerations
314 // and jiggle the panel accordingly
315 // The factors and bounds are just
316 // initial guesses; using sqrt smooths
318 double x_offset = _x_offset->getIntValue();
319 double y_offset = _y_offset->getIntValue();
322 if (_jitter->getFloatValue() != 0.0) {
323 double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
324 double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
325 double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
327 double a_zx_pilot = a_z_pilot - a_x_pilot;
329 int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter->getFloatValue())) *
330 (a_y_pilot < 0 ? -1 : 1);
331 int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter->getFloatValue())) *
332 (a_zx_pilot < 0 ? -1 : 1);
334 // adjustments in screen coordinates
335 x_offset += x_adjust;
336 y_offset += y_adjust;
340 glMatrixMode(GL_PROJECTION);
343 if ( _flipx->getBoolValue() ) {
344 gluOrtho2D(winx + winw, winx, winy + winh, winy); /* up side down */
346 gluOrtho2D(winx, winx + winw, winy, winy + winh); /* right side up */
349 glMatrixMode(GL_MODELVIEW);
353 glTranslated(x_offset, y_offset, 0);
357 glMatrixMode(GL_PROJECTION);
359 glMatrixMode(GL_MODELVIEW);
362 ssgForceBasicState();
363 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
369 // In 3D mode, it's possible that we are being drawn exactly on top
370 // of an existing polygon. Use an offset to prevent z-fighting. In
371 // 2D mode, this is a no-op.
372 glEnable(GL_POLYGON_OFFSET_FILL);
373 glPolygonOffset(-1, -POFF_UNITS);
376 glPushAttrib( GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT | GL_LIGHTING_BIT
377 | GL_TEXTURE_BIT | GL_PIXEL_MODE_BIT | GL_CULL_FACE
378 | GL_DEPTH_BUFFER_BIT );
380 // Draw the background
381 glEnable(GL_TEXTURE_2D);
382 glDisable(GL_LIGHTING);
384 glEnable(GL_ALPHA_TEST);
385 glEnable(GL_COLOR_MATERIAL);
386 glEnable(GL_CULL_FACE);
388 glDisable(GL_DEPTH_TEST);
391 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
392 sgCopyVec4( panel_color, l->scene_diffuse());
393 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
394 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
395 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
396 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
398 glColor4fv( panel_color );
400 glBindTexture(GL_TEXTURE_2D, _bg->getHandle());
401 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
402 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
403 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
405 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X, WIN_Y);
406 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + _width, WIN_Y);
407 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + _width, WIN_Y + _height);
408 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X, WIN_Y + _height);
411 for (int i = 0; i < 4; i ++) {
412 // top row of textures...(1,3,5,7)
413 glBindTexture(GL_TEXTURE_2D, _mbg[i*2]->getHandle());
414 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
416 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
417 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
418 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + _height);
419 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + _height);
421 // bottom row of textures...(2,4,6,8)
422 glBindTexture(GL_TEXTURE_2D, _mbg[(i*2)+1]->getHandle());
423 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
425 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y);
426 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y);
427 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
428 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
433 // Draw the instruments.
434 instrument_list_type::const_iterator current = _instruments.begin();
435 instrument_list_type::const_iterator end = _instruments.end();
437 for ( ; current != end; current++) {
438 FGPanelInstrument * instr = *current;
440 glTranslated(instr->getXPos(), instr->getYPos(), 0);
445 // Draw yellow "hotspots" if directed to. This is a panel authoring
446 // feature; not intended to be high performance or to look good.
447 if ( fgGetBool("/sim/panel-hotspots") ) {
448 glDisable(GL_TEXTURE_2D);
451 for ( unsigned int i = 0; i < _instruments.size(); i++ )
452 _instruments[i]->drawHotspots();
456 // restore some original state
458 glPolygonOffset(0, 0);
459 glDisable(GL_POLYGON_OFFSET_FILL);
463 * Set the panel's visibility.
466 FGPanel::setVisibility (bool visibility)
468 _visibility->setBoolValue( visibility );
473 * Return true if the panel is visible.
476 FGPanel::getVisibility () const
478 return _visibility->getBoolValue();
483 * Set the panel's background texture.
486 FGPanel::setBackground (ssgTexture * texture)
492 * Set the panel's multiple background textures.
495 FGPanel::setMultiBackground (ssgTexture * texture, int idx)
502 * Set the panel's x-offset.
505 FGPanel::setXOffset (int offset)
507 if (offset <= 0 && offset >= -_width + WIN_W)
508 _x_offset->setIntValue( offset );
513 * Set the panel's y-offset.
516 FGPanel::setYOffset (int offset)
518 if (offset <= 0 && offset >= -_height)
519 _y_offset->setIntValue( offset );
523 * Handle a mouse action in panel-local (not screen) coordinates.
524 * Used by the 3D panel code in Model/panelnode.cxx, in situations
525 * where the panel doesn't control its own screen location.
528 FGPanel::doLocalMouseAction(int button, int updown, int x, int y)
530 // Note a released button and return
532 if (_mouseInstrument != 0)
533 _mouseInstrument->doMouseAction(_mouseButton, 1, _mouseX, _mouseY);
535 _mouseInstrument = 0;
539 // Search for a matching instrument.
540 for (int i = 0; i < (int)_instruments.size(); i++) {
541 FGPanelInstrument *inst = _instruments[i];
542 int ix = inst->getXPos();
543 int iy = inst->getYPos();
544 int iw = inst->getWidth() / 2;
545 int ih = inst->getHeight() / 2;
546 if (x >= ix - iw && x < ix + iw && y >= iy - ih && y < iy + ih) {
549 _mouseInstrument = inst;
550 _mouseButton = button;
553 // Always do the action once.
554 return _mouseInstrument->doMouseAction(_mouseButton, 0,
562 * Perform a mouse action.
565 FGPanel::doMouseAction (int button, int updown, int x, int y)
567 // FIXME: this same code appears in update()
568 int xsize = _xsize_node->getIntValue();
569 int ysize = _ysize_node->getIntValue();
570 float aspect_adjust = get_aspect_adjust(xsize, ysize);
572 // Scale for the real window size.
573 if (aspect_adjust < 1.0) {
574 x = int(((float)x / xsize) * WIN_W * aspect_adjust);
575 y = int(WIN_H - ((float(y) / ysize) * WIN_H));
577 x = int(((float)x / xsize) * WIN_W);
578 y = int((WIN_H - ((float(y) / ysize) * WIN_H)) / aspect_adjust);
581 // Adjust for offsets.
582 x -= _x_offset->getIntValue();
583 y -= _y_offset->getIntValue();
585 // Having fixed up the coordinates, fall through to the local
586 // coordinate handler.
587 return doLocalMouseAction(button, updown, x, y);
592 ////////////////////////////////////////////////////////////////////////.
593 // Implementation of FGPanelAction.
594 ////////////////////////////////////////////////////////////////////////
596 FGPanelAction::FGPanelAction ()
600 FGPanelAction::FGPanelAction (int button, int x, int y, int w, int h,
602 : _button(button), _x(x), _y(y), _w(w), _h(h), _repeatable(repeatable)
604 for (unsigned int i = 0; i < 2; i++) {
605 for (unsigned int j = 0; j < _bindings[i].size(); j++)
606 delete _bindings[i][j];
610 FGPanelAction::~FGPanelAction ()
615 FGPanelAction::addBinding (FGBinding * binding, int updown)
617 _bindings[updown].push_back(binding);
621 FGPanelAction::doAction (int updown)
624 if ((updown != _last_state) || (updown == 0 && _repeatable)) {
625 int nBindings = _bindings[updown].size();
626 for (int i = 0; i < nBindings; i++)
627 _bindings[updown][i]->fire();
629 _last_state = updown;
638 ////////////////////////////////////////////////////////////////////////
639 // Implementation of FGPanelTransformation.
640 ////////////////////////////////////////////////////////////////////////
642 FGPanelTransformation::FGPanelTransformation ()
647 FGPanelTransformation::~FGPanelTransformation ()
654 ////////////////////////////////////////////////////////////////////////
655 // Implementation of FGPanelInstrument.
656 ////////////////////////////////////////////////////////////////////////
659 FGPanelInstrument::FGPanelInstrument ()
665 FGPanelInstrument::FGPanelInstrument (int x, int y, int w, int h)
671 FGPanelInstrument::~FGPanelInstrument ()
673 for (action_list_type::iterator it = _actions.begin();
674 it != _actions.end();
682 FGPanelInstrument::drawHotspots()
684 for ( unsigned int i = 0; i < _actions.size(); i++ ) {
685 FGPanelAction* a = _actions[i];
686 float x1 = getXPos() + a->getX();
687 float x2 = x1 + a->getWidth();
688 float y1 = getYPos() + a->getY();
689 float y2 = y1 + a->getHeight();
691 glBegin(GL_LINE_LOOP);
701 FGPanelInstrument::setPosition (int x, int y)
708 FGPanelInstrument::setSize (int w, int h)
715 FGPanelInstrument::getXPos () const
721 FGPanelInstrument::getYPos () const
727 FGPanelInstrument::getWidth () const
733 FGPanelInstrument::getHeight () const
739 FGPanelInstrument::addAction (FGPanelAction * action)
741 _actions.push_back(action);
744 // Coordinates relative to centre.
746 FGPanelInstrument::doMouseAction (int button, int updown, int x, int y)
749 action_list_type::iterator it = _actions.begin();
750 action_list_type::iterator last = _actions.end();
751 for ( ; it != last; it++) {
752 if ((*it)->inArea(button, x, y) &&
753 (*it)->doAction(updown))
762 ////////////////////////////////////////////////////////////////////////
763 // Implementation of FGLayeredInstrument.
764 ////////////////////////////////////////////////////////////////////////
766 FGLayeredInstrument::FGLayeredInstrument (int x, int y, int w, int h)
767 : FGPanelInstrument(x, y, w, h)
771 FGLayeredInstrument::~FGLayeredInstrument ()
773 for (layer_list::iterator it = _layers.begin(); it != _layers.end(); it++) {
780 FGLayeredInstrument::draw ()
785 for (int i = 0; i < (int)_layers.size(); i++) {
793 FGLayeredInstrument::addLayer (FGInstrumentLayer *layer)
795 int n = _layers.size();
796 if (layer->getWidth() == -1) {
797 layer->setWidth(getWidth());
799 if (layer->getHeight() == -1) {
800 layer->setHeight(getHeight());
802 _layers.push_back(layer);
807 FGLayeredInstrument::addLayer (FGCroppedTexture &texture,
810 return addLayer(new FGTexturedLayer(texture, w, h));
814 FGLayeredInstrument::addTransformation (FGPanelTransformation * transformation)
816 int layer = _layers.size() - 1;
817 _layers[layer]->addTransformation(transformation);
822 ////////////////////////////////////////////////////////////////////////
823 // Implementation of FGInstrumentLayer.
824 ////////////////////////////////////////////////////////////////////////
826 FGInstrumentLayer::FGInstrumentLayer (int w, int h)
832 FGInstrumentLayer::~FGInstrumentLayer ()
834 for (transformation_list::iterator it = _transformations.begin();
835 it != _transformations.end();
843 FGInstrumentLayer::transform () const
845 transformation_list::const_iterator it = _transformations.begin();
846 transformation_list::const_iterator last = _transformations.end();
848 FGPanelTransformation *t = *it;
850 float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
853 val = fmod(val, t->mod);
856 } else if (val > t->max) {
861 val = val * t->factor + t->offset;
863 val = t->table->interpolate(val) * t->factor + t->offset;
867 case FGPanelTransformation::XSHIFT:
868 glTranslatef(val, 0.0, 0.0);
870 case FGPanelTransformation::YSHIFT:
871 glTranslatef(0.0, val, 0.0);
873 case FGPanelTransformation::ROTATION:
874 glRotatef(-val, 0.0, 0.0, 1.0);
883 FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
885 _transformations.push_back(transformation);
890 ////////////////////////////////////////////////////////////////////////
891 // Implementation of FGGroupLayer.
892 ////////////////////////////////////////////////////////////////////////
894 FGGroupLayer::FGGroupLayer ()
898 FGGroupLayer::~FGGroupLayer ()
900 for (unsigned int i = 0; i < _layers.size(); i++)
905 FGGroupLayer::draw ()
909 int nLayers = _layers.size();
910 for (int i = 0; i < nLayers; i++)
916 FGGroupLayer::addLayer (FGInstrumentLayer * layer)
918 _layers.push_back(layer);
923 ////////////////////////////////////////////////////////////////////////
924 // Implementation of FGTexturedLayer.
925 ////////////////////////////////////////////////////////////////////////
928 FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
929 : FGInstrumentLayer(w, h)
935 FGTexturedLayer::~FGTexturedLayer ()
941 FGTexturedLayer::draw ()
948 glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
951 // From Curt: turn on the panel
952 // lights after sundown.
955 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
956 sgCopyVec4( panel_color, l->scene_diffuse());
957 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
958 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
959 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
960 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
962 glColor4fv( panel_color );
964 glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
965 glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
966 glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
967 glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
974 ////////////////////////////////////////////////////////////////////////
975 // Implementation of FGTextLayer.
976 ////////////////////////////////////////////////////////////////////////
978 FGTextLayer::FGTextLayer (int w, int h)
979 : FGInstrumentLayer(w, h), _pointSize(14.0), _font_name("default")
982 _color[0] = _color[1] = _color[2] = 0.0;
986 FGTextLayer::~FGTextLayer ()
988 chunk_list::iterator it = _chunks.begin();
989 chunk_list::iterator last = _chunks.end();
990 for ( ; it != last; it++) {
1001 if ( _font_name == "led" && led_font != 0) {
1002 text_renderer.setFont(led_font);
1004 text_renderer.setFont(guiFntHandle);
1006 text_renderer.setPointSize(_pointSize);
1007 text_renderer.begin();
1008 text_renderer.start3f(0, 0, 0);
1011 long diff = _now - _then;
1013 if (diff > 100000 || diff < 0 ) {
1014 // ( diff < 0 ) is a sanity check and indicates our time stamp
1015 // difference math probably overflowed. We can handle a max
1016 // difference of 35.8 minutes since the returned value is in
1017 // usec. So if the panel is left off longer than that we can
1018 // over flow the math with it is turned back on. This (diff <
1019 // 0) catches that situation, get's us out of trouble, and
1025 // Something is goofy. The code in this file renders only CCW
1026 // polygons, and I have verified that the font code in plib
1027 // renders only CCW trianbles. Yet they come out backwards.
1028 // Something around here or in plib is either changing the winding
1029 // order or (more likely) pushing a left-handed matrix onto the
1030 // stack. But I can't find it; get out the chainsaw...
1032 text_renderer.puts((char *)(_value.c_str()));
1033 glFrontFace(GL_CCW);
1035 text_renderer.end();
1036 glColor4f(1.0, 1.0, 1.0, 1.0); // FIXME
1041 FGTextLayer::addChunk (FGTextLayer::Chunk * chunk)
1043 _chunks.push_back(chunk);
1047 FGTextLayer::setColor (float r, float g, float b)
1056 FGTextLayer::setPointSize (float size)
1062 FGTextLayer::setFontName(const string &name)
1069 FGTextLayer::setFont(fntFont * font)
1071 text_renderer.setFont(font);
1076 FGTextLayer::recalc_value () const
1079 chunk_list::const_iterator it = _chunks.begin();
1080 chunk_list::const_iterator last = _chunks.end();
1081 for ( ; it != last; it++) {
1082 _value += (*it)->getValue();
1088 ////////////////////////////////////////////////////////////////////////
1089 // Implementation of FGTextLayer::Chunk.
1090 ////////////////////////////////////////////////////////////////////////
1092 FGTextLayer::Chunk::Chunk (const string &text, const string &fmt)
1093 : _type(FGTextLayer::TEXT), _fmt(fmt)
1100 FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
1101 const string &fmt, float mult, float offs,
1103 : _type(type), _fmt(fmt), _mult(mult), _offs(offs), _trunc(truncation)
1106 if (type == TEXT_VALUE)
1115 FGTextLayer::Chunk::getValue () const
1121 sprintf(_buf, _fmt.c_str(), _text.c_str());
1124 sprintf(_buf, _fmt.c_str(), _node->getStringValue());
1127 double d = _offs + _node->getFloatValue() * _mult;
1128 if (_trunc) d = truncf(d);
1129 sprintf(_buf, _fmt.c_str(), d);
1140 ////////////////////////////////////////////////////////////////////////
1141 // Implementation of FGSwitchLayer.
1142 ////////////////////////////////////////////////////////////////////////
1144 FGSwitchLayer::FGSwitchLayer ()
1150 FGSwitchLayer::draw ()
1154 int nLayers = _layers.size();
1155 for (int i = 0; i < nLayers; i++) {
1156 if (_layers[i]->test()) {