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 ////////////////////////////////////////////////////////////////////////
59 ////////////////////////////////////////////////////////////////////////
63 * Calculate the aspect adjustment for the panel.
66 get_aspect_adjust (int xsize, int ysize)
68 float ideal_aspect = float(WIN_W) / float(WIN_H);
69 float real_aspect = float(xsize) / float(ysize);
70 return (real_aspect / ideal_aspect);
75 ////////////////////////////////////////////////////////////////////////
77 ////////////////////////////////////////////////////////////////////////
82 if(globals->get_current_panel() == 0)
84 if(globals->get_current_panel()->getVisibility() == 0)
86 if(globals->get_viewmgr()->get_current() != 0)
88 if(globals->get_current_view()->getHeadingOffset_deg() * SGD_DEGREES_TO_RADIANS != 0)
95 ////////////////////////////////////////////////////////////////////////
96 // Implementation of FGTextureManager.
97 ////////////////////////////////////////////////////////////////////////
99 map<string,ssgTexture *> FGTextureManager::_textureMap;
102 FGTextureManager::createTexture (const string &relativePath)
104 ssgTexture * texture = _textureMap[relativePath];
106 SG_LOG( SG_COCKPIT, SG_DEBUG,
107 "Texture " << relativePath << " does not yet exist" );
108 SGPath tpath(globals->get_fg_root());
109 tpath.append(relativePath);
110 texture = new ssgTexture((char *)tpath.c_str(), false, false);
111 _textureMap[relativePath] = texture;
112 if (_textureMap[relativePath] == 0)
113 SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
114 SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath
115 << " handle=" << texture->getHandle() );
124 ////////////////////////////////////////////////////////////////////////
125 // Implementation of FGCropped Texture.
126 ////////////////////////////////////////////////////////////////////////
129 FGCroppedTexture::FGCroppedTexture ()
130 : _path(""), _texture(0),
131 _minX(0.0), _minY(0.0), _maxX(1.0), _maxY(1.0)
136 FGCroppedTexture::FGCroppedTexture (const string &path,
137 float minX, float minY,
138 float maxX, float maxY)
139 : _path(path), _texture(0),
140 _minX(minX), _minY(minY), _maxX(maxX), _maxY(maxY)
145 FGCroppedTexture::~FGCroppedTexture ()
151 FGCroppedTexture::getTexture ()
154 _texture = FGTextureManager::createTexture(_path);
161 ////////////////////////////////////////////////////////////////////////
162 // Implementation of FGPanel.
163 ////////////////////////////////////////////////////////////////////////
165 static fntRenderer text_renderer;
166 static fntTexFont *default_font = 0;
167 static fntTexFont *led_font = 0;
175 _width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
176 _view_height(int(WIN_H * 0.4232)),
177 _visibility(fgGetNode("/sim/panel/visibility", true)),
178 _x_offset(fgGetNode("/sim/panel/x-offset", true)),
179 _y_offset(fgGetNode("/sim/panel/y-offset", true)),
180 _jitter(fgGetNode("/sim/panel/jitter", true)),
181 _flipx(fgGetNode("/sim/panel/flip-x", true)),
182 _xsize_node(fgGetNode("/sim/startup/xsize", true)),
183 _ysize_node(fgGetNode("/sim/startup/ysize", true))
193 for (instrument_list_type::iterator it = _instruments.begin();
194 it != _instruments.end();
203 * Add an instrument to the panel.
206 FGPanel::addInstrument (FGPanelInstrument * instrument)
208 _instruments.push_back(instrument);
213 * Initialize the panel.
219 char* envp = ::getenv( "FG_FONTS" );
220 if ( envp != NULL ) {
221 base_path.set( envp );
223 base_path.set( globals->get_fg_root() );
224 base_path.append( "Fonts" );
229 // Install the default font
231 fntpath.append( "typewriter.txf" );
232 default_font = new fntTexFont ;
233 default_font -> load ( (char *)fntpath.c_str() ) ;
235 // Install the LED font
237 fntpath.append( "led.txf" );
238 led_font = new fntTexFont ;
239 led_font -> load ( (char *)fntpath.c_str() ) ;
244 * Bind panel properties.
249 fgSetArchivable("/sim/panel/visibility");
250 fgSetArchivable("/sim/panel/x-offset");
251 fgSetArchivable("/sim/panel/y-offset");
252 fgSetArchivable("/sim/panel/jitter");
257 * Unbind panel properties.
269 FGPanel::update (double dt)
271 // Do nothing if the panel isn't visible.
272 if ( !fgPanelVisible() ) {
278 // Now, draw the panel
279 float aspect_adjust = get_aspect_adjust(_xsize_node->getIntValue(),
280 _ysize_node->getIntValue());
281 if (aspect_adjust <1.0)
282 update(WIN_X, int(WIN_W * aspect_adjust), WIN_Y, WIN_H);
284 update(WIN_X, WIN_W, WIN_Y, int(WIN_H / aspect_adjust));
288 * Handle repeatable mouse events. Called from update() and from
289 * fgUpdate3DPanels(). This functionality needs to move into the
290 * input subsystem. Counting a tick every two frames is clumsy...
292 void FGPanel::updateMouseDelay()
296 if (_mouseDelay < 0) {
297 _mouseInstrument->doMouseAction(_mouseButton, 0, _mouseX, _mouseY);
305 FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
307 // Calculate accelerations
308 // and jiggle the panel accordingly
309 // The factors and bounds are just
310 // initial guesses; using sqrt smooths
312 double x_offset = _x_offset->getIntValue();
313 double y_offset = _y_offset->getIntValue();
316 if (_jitter->getFloatValue() != 0.0) {
317 double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
318 double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
319 double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
321 double a_zx_pilot = a_z_pilot - a_x_pilot;
323 int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter->getFloatValue())) *
324 (a_y_pilot < 0 ? -1 : 1);
325 int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter->getFloatValue())) *
326 (a_zx_pilot < 0 ? -1 : 1);
328 // adjustments in screen coordinates
329 x_offset += x_adjust;
330 y_offset += y_adjust;
334 glMatrixMode(GL_PROJECTION);
337 if ( _flipx->getBoolValue() ) {
338 gluOrtho2D(winx + winw, winx, winy + winh, winy); /* up side down */
340 gluOrtho2D(winx, winx + winw, winy, winy + winh); /* right side up */
343 glMatrixMode(GL_MODELVIEW);
347 glTranslated(x_offset, y_offset, 0);
351 glMatrixMode(GL_PROJECTION);
353 glMatrixMode(GL_MODELVIEW);
356 ssgForceBasicState();
357 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
363 // In 3D mode, it's possible that we are being drawn exactly on top
364 // of an existing polygon. Use an offset to prevent z-fighting. In
365 // 2D mode, this is a no-op.
366 glEnable(GL_POLYGON_OFFSET_FILL);
367 glPolygonOffset(-1, -POFF_UNITS);
370 glPushAttrib( GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT | GL_LIGHTING_BIT
371 | GL_TEXTURE_BIT | GL_PIXEL_MODE_BIT | GL_CULL_FACE
372 | GL_DEPTH_BUFFER_BIT );
374 // Draw the background
375 glEnable(GL_TEXTURE_2D);
376 glDisable(GL_LIGHTING);
378 glEnable(GL_ALPHA_TEST);
379 glEnable(GL_COLOR_MATERIAL);
380 glEnable(GL_CULL_FACE);
382 glDepthMask(GL_FALSE);
384 sgCopyVec4( panel_color, cur_light_params.scene_diffuse );
385 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
386 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
387 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
388 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
390 glColor4fv( panel_color );
392 glBindTexture(GL_TEXTURE_2D, _bg->getHandle());
393 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
394 // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
395 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
397 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X, WIN_Y);
398 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + _width, WIN_Y);
399 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + _width, WIN_Y + _height);
400 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X, WIN_Y + _height);
403 for (int i = 0; i < 4; i ++) {
404 // top row of textures...(1,3,5,7)
405 glBindTexture(GL_TEXTURE_2D, _mbg[i*2]->getHandle());
406 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
408 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
409 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
410 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + _height);
411 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + _height);
413 // bottom row of textures...(2,4,6,8)
414 glBindTexture(GL_TEXTURE_2D, _mbg[(i*2)+1]->getHandle());
415 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
417 glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y);
418 glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y);
419 glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
420 glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
425 // Draw the instruments.
426 instrument_list_type::const_iterator current = _instruments.begin();
427 instrument_list_type::const_iterator end = _instruments.end();
429 // Don't let the instruments be visible trhought the roof of the c310-3d
430 // This does hurt the magnetic compass in the default c172-3d,
431 // but we need a real 3d compass anyway.
432 glPolygonOffset(-1, -5*POFF_UNITS);
433 for ( ; current != end; current++) {
434 FGPanelInstrument * instr = *current;
436 glTranslated(instr->getXPos(), instr->getYPos(), 0);
441 // Draw yellow "hotspots" if directed to. This is a panel authoring
442 // feature; not intended to be high performance or to look good.
443 if ( fgGetBool("/sim/panel-hotspots") ) {
444 glPushAttrib(GL_ALL_ATTRIB_BITS);
445 glDisable(GL_DEPTH_TEST);
446 glDisable(GL_TEXTURE_2D);
449 for ( unsigned int i = 0; i < _instruments.size(); i++ )
450 _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++) {
787 // glPolygonOffset(-1, -POFF_UNITS*(i+2));
794 FGLayeredInstrument::addLayer (FGInstrumentLayer *layer)
796 int n = _layers.size();
797 if (layer->getWidth() == -1) {
798 layer->setWidth(getWidth());
800 if (layer->getHeight() == -1) {
801 layer->setHeight(getHeight());
803 _layers.push_back(layer);
808 FGLayeredInstrument::addLayer (FGCroppedTexture &texture,
811 return addLayer(new FGTexturedLayer(texture, w, h));
815 FGLayeredInstrument::addTransformation (FGPanelTransformation * transformation)
817 int layer = _layers.size() - 1;
818 _layers[layer]->addTransformation(transformation);
823 ////////////////////////////////////////////////////////////////////////
824 // Implementation of FGInstrumentLayer.
825 ////////////////////////////////////////////////////////////////////////
827 FGInstrumentLayer::FGInstrumentLayer (int w, int h)
833 FGInstrumentLayer::~FGInstrumentLayer ()
835 for (transformation_list::iterator it = _transformations.begin();
836 it != _transformations.end();
844 FGInstrumentLayer::transform () const
846 transformation_list::const_iterator it = _transformations.begin();
847 transformation_list::const_iterator last = _transformations.end();
849 FGPanelTransformation *t = *it;
851 float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
854 val = fmod(val, t->mod);
857 } else if (val > t->max) {
862 val = val * t->factor + t->offset;
864 val = t->table->interpolate(val) * t->factor + t->offset;
868 case FGPanelTransformation::XSHIFT:
869 glTranslatef(val, 0.0, 0.0);
871 case FGPanelTransformation::YSHIFT:
872 glTranslatef(0.0, val, 0.0);
874 case FGPanelTransformation::ROTATION:
875 glRotatef(-val, 0.0, 0.0, 1.0);
884 FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
886 _transformations.push_back(transformation);
891 ////////////////////////////////////////////////////////////////////////
892 // Implementation of FGGroupLayer.
893 ////////////////////////////////////////////////////////////////////////
895 FGGroupLayer::FGGroupLayer ()
899 FGGroupLayer::~FGGroupLayer ()
901 for (unsigned int i = 0; i < _layers.size(); i++)
906 FGGroupLayer::draw ()
910 int nLayers = _layers.size();
911 for (int i = 0; i < nLayers; i++)
917 FGGroupLayer::addLayer (FGInstrumentLayer * layer)
919 _layers.push_back(layer);
924 ////////////////////////////////////////////////////////////////////////
925 // Implementation of FGTexturedLayer.
926 ////////////////////////////////////////////////////////////////////////
929 FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
930 : FGInstrumentLayer(w, h)
936 FGTexturedLayer::~FGTexturedLayer ()
942 FGTexturedLayer::draw ()
949 glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
952 // From Curt: turn on the panel
953 // lights after sundown.
955 sgCopyVec4( panel_color, cur_light_params.scene_diffuse );
956 if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
957 if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
958 if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
959 if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
961 glColor4fv( panel_color );
963 glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
964 glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
965 glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
966 glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
973 ////////////////////////////////////////////////////////////////////////
974 // Implementation of FGTextLayer.
975 ////////////////////////////////////////////////////////////////////////
977 FGTextLayer::FGTextLayer (int w, int h)
978 : FGInstrumentLayer(w, h), _pointSize(14.0), _font_name("default")
981 _color[0] = _color[1] = _color[2] = 0.0;
985 FGTextLayer::~FGTextLayer ()
987 chunk_list::iterator it = _chunks.begin();
988 chunk_list::iterator last = _chunks.end();
989 for ( ; it != last; it++) {
1000 if ( _font_name == "led" && led_font != 0) {
1001 text_renderer.setFont(led_font);
1003 text_renderer.setFont(guiFntHandle);
1005 text_renderer.setPointSize(_pointSize);
1006 text_renderer.begin();
1007 text_renderer.start3f(0, 0, 0);
1010 long diff = _now - _then;
1012 if (diff > 100000 || diff < 0 ) {
1013 // ( diff < 0 ) is a sanity check and indicates our time stamp
1014 // difference math probably overflowed. We can handle a max
1015 // difference of 35.8 minutes since the returned value is in
1016 // usec. So if the panel is left off longer than that we can
1017 // over flow the math with it is turned back on. This (diff <
1018 // 0) catches that situation, get's us out of trouble, and
1024 // Something is goofy. The code in this file renders only CCW
1025 // polygons, and I have verified that the font code in plib
1026 // renders only CCW trianbles. Yet they come out backwards.
1027 // Something around here or in plib is either changing the winding
1028 // order or (more likely) pushing a left-handed matrix onto the
1029 // stack. But I can't find it; get out the chainsaw...
1031 text_renderer.puts((char *)(_value.c_str()));
1032 glFrontFace(GL_CCW);
1034 text_renderer.end();
1035 glColor4f(1.0, 1.0, 1.0, 1.0); // FIXME
1040 FGTextLayer::addChunk (FGTextLayer::Chunk * chunk)
1042 _chunks.push_back(chunk);
1046 FGTextLayer::setColor (float r, float g, float b)
1055 FGTextLayer::setPointSize (float size)
1061 FGTextLayer::setFontName(const string &name)
1068 FGTextLayer::setFont(fntFont * font)
1070 text_renderer.setFont(font);
1075 FGTextLayer::recalc_value () const
1078 chunk_list::const_iterator it = _chunks.begin();
1079 chunk_list::const_iterator last = _chunks.end();
1080 for ( ; it != last; it++) {
1081 _value += (*it)->getValue();
1087 ////////////////////////////////////////////////////////////////////////
1088 // Implementation of FGTextLayer::Chunk.
1089 ////////////////////////////////////////////////////////////////////////
1091 FGTextLayer::Chunk::Chunk (const string &text, const string &fmt)
1092 : _type(FGTextLayer::TEXT), _fmt(fmt)
1099 FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
1100 const string &fmt, float mult)
1101 : _type(type), _fmt(fmt), _mult(mult)
1104 if (type == TEXT_VALUE)
1113 FGTextLayer::Chunk::getValue () const
1119 sprintf(_buf, _fmt.c_str(), _text.c_str());
1122 sprintf(_buf, _fmt.c_str(), _node->getStringValue());
1125 sprintf(_buf, _fmt.c_str(), _node->getFloatValue() * _mult);
1136 ////////////////////////////////////////////////////////////////////////
1137 // Implementation of FGSwitchLayer.
1138 ////////////////////////////////////////////////////////////////////////
1140 FGSwitchLayer::FGSwitchLayer ()
1146 FGSwitchLayer::draw ()
1150 int nLayers = _layers.size();
1151 for (int i = 0; i < nLayers; i++) {
1152 if (_layers[i]->test()) {