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flightgear/src/Cockpit/panel.cxx
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// panel.cxx - default, 2D single-engine prop instrument panel
//
// Written by David Megginson, started January 2000.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
//JVK
// On 2D panels all instruments include light sources were in night displayed
// with a red mask (instrument light). It is not correct for light sources
// (bulbs). There is added new layer property "emissive" (boolean) (only for
// textured layers).
// If a layer has to shine set it in the "instrument_def_file.xml" inside the
// <layer> tag by adding <emissive>true</emissive> tag. When omitted the default
// value is for backward compatibility set to false.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "panel.hxx"
#include <stdio.h> // sprintf
#include <string.h>
#include <iostream>
#include <cassert>
#include <osg/CullFace>
#include <osg/Depth>
#include <osg/Material>
#include <osg/Matrixf>
#include <osg/TexEnv>
#include <osg/PolygonOffset>
#include <simgear/compiler.h>
#include "fnt.h"
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/strutils.hxx>
#include <simgear/scene/model/model.hxx>
#include <osg/GLU>
#include <Main/globals.hxx>
#include <Main/fg_props.hxx>
#include <Viewer/viewmgr.hxx>
#include <Viewer/view.hxx>
#include <Time/light.hxx>
#include <GUI/FGFontCache.hxx>
#include <Instrumentation/dclgps.hxx>
#define WIN_X 0
#define WIN_Y 0
#define WIN_W 1024
#define WIN_H 768
// The number of polygon-offset "units" to place between layers. In
// principle, one is supposed to be enough. In practice, I find that
// my hardware/driver requires many more.
#define POFF_UNITS 8
const double MOUSE_ACTION_REPEAT_DELAY = 0.5; // 500msec initial delay
const double MOUSE_ACTION_REPEAT_INTERVAL = 0.1; // 10Hz repeat rate
using std::map;
////////////////////////////////////////////////////////////////////////
// Local functions.
////////////////////////////////////////////////////////////////////////
/**
* Calculate the aspect adjustment for the panel.
*/
static float
get_aspect_adjust (int xsize, int ysize)
{
float ideal_aspect = float(WIN_W) / float(WIN_H);
float real_aspect = float(xsize) / float(ysize);
return (real_aspect / ideal_aspect);
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGTextureManager.
////////////////////////////////////////////////////////////////////////
map<std::string,osg::ref_ptr<osg::Texture2D> > FGTextureManager::_textureMap;
osg::Texture2D*
FGTextureManager::createTexture (const std::string &relativePath, bool staticTexture)
{
osg::Texture2D* texture = _textureMap[relativePath].get();
if (texture == 0) {
SGPath tpath = globals->resolve_aircraft_path(relativePath);
texture = SGLoadTexture2D(staticTexture, tpath);
_textureMap[relativePath] = texture;
if (!_textureMap[relativePath].valid())
SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath );
}
return texture;
}
void FGTextureManager::addTexture(const std::string &relativePath,
osg::Texture2D* texture)
{
_textureMap[relativePath] = texture;
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGCropped Texture.
////////////////////////////////////////////////////////////////////////
FGCroppedTexture::FGCroppedTexture ()
: _path(""), _texture(0),
_minX(0.0), _minY(0.0), _maxX(1.0), _maxY(1.0)
{
}
FGCroppedTexture::FGCroppedTexture (const std::string &path,
float minX, float minY,
float maxX, float maxY)
: _path(path), _texture(0),
_minX(minX), _minY(minY), _maxX(maxX), _maxY(maxY)
{
}
FGCroppedTexture::~FGCroppedTexture ()
{
}
osg::StateSet*
FGCroppedTexture::getTexture ()
{
if (_texture == 0) {
_texture = new osg::StateSet;
_texture->setTextureAttribute(0, FGTextureManager::createTexture(_path));
_texture->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
_texture->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
}
return _texture.get();
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGPanel.
////////////////////////////////////////////////////////////////////////
static fntRenderer text_renderer;
static sgVec4 panel_color;
static sgVec4 emissive_panel_color = {1,1,1,1};
/**
* Constructor.
*/
FGPanel::FGPanel ()
: _mouseDown(false),
_mouseInstrument(0),
_width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
_x_offset(fgGetNode("/sim/panel/x-offset", true)),
_y_offset(fgGetNode("/sim/panel/y-offset", true)),
_jitter(fgGetNode("/sim/panel/jitter", true)),
_flipx(fgGetNode("/sim/panel/flip-x", true)),
_xsize_node(fgGetNode("/sim/startup/xsize", true)),
_ysize_node(fgGetNode("/sim/startup/ysize", true)),
_enable_depth_test(false),
_autohide(true),
_drawPanelHotspots("/sim/panel-hotspots")
{
}
/**
* Destructor.
*/
FGPanel::~FGPanel ()
{
for (instrument_list_type::iterator it = _instruments.begin();
it != _instruments.end();
it++) {
delete *it;
*it = 0;
}
}
/**
* Add an instrument to the panel.
*/
void
FGPanel::addInstrument (FGPanelInstrument * instrument)
{
_instruments.push_back(instrument);
}
double
FGPanel::getAspectScale() const
{
// set corner-coordinates correctly
int xsize = _xsize_node->getIntValue();
int ysize = _ysize_node->getIntValue();
float aspect_adjust = get_aspect_adjust(xsize, ysize);
if (aspect_adjust < 1.0)
return ysize / (double) WIN_H;
else
return xsize /(double) WIN_W;
}
/**
* Handle repeatable mouse events. Called from update() and from
* fgUpdate3DPanels(). This functionality needs to move into the
* input subsystem. Counting a tick every two frames is clumsy...
*/
void FGPanel::updateMouseDelay(double dt)
{
if (!_mouseDown) {
return;
}
_mouseActionRepeat -= dt;
while (_mouseActionRepeat < 0.0) {
_mouseActionRepeat += MOUSE_ACTION_REPEAT_INTERVAL;
_mouseInstrument->doMouseAction(_mouseButton, 0, _mouseX, _mouseY);
}
}
void
FGPanel::draw(osg::State& state)
{
// In 3D mode, it's possible that we are being drawn exactly on top
// of an existing polygon. Use an offset to prevent z-fighting. In
// 2D mode, this is a no-op.
static osg::ref_ptr<osg::StateSet> panelStateSet;
if (!panelStateSet.valid()) {
panelStateSet = new osg::StateSet;
panelStateSet->setAttributeAndModes(new osg::PolygonOffset(-1, -POFF_UNITS));
panelStateSet->setTextureAttribute(0, new osg::TexEnv);
// Draw the background
panelStateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
panelStateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
panelStateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
panelStateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
osg::Material* material = new osg::Material;
material->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
material->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(1, 1, 1, 1));
material->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4(1, 1, 1, 1));
material->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
material->setEmission(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
panelStateSet->setAttribute(material);
panelStateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
panelStateSet->setAttributeAndModes(new osg::CullFace(osg::CullFace::BACK));
panelStateSet->setAttributeAndModes(new osg::Depth(osg::Depth::LEQUAL));
}
if ( _enable_depth_test )
panelStateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
else
panelStateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
state.pushStateSet(panelStateSet.get());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
sgCopyVec4( panel_color, l->scene_diffuse().data());
if ( fgGetDouble("/systems/electrical/outputs/instrument-lights") > 1.0 ) {
if ( panel_color[0] < 0.7 ) panel_color[0] = 0.7;
if ( panel_color[1] < 0.2 ) panel_color[1] = 0.2;
if ( panel_color[2] < 0.2 ) panel_color[2] = 0.2;
}
glColor4fv( panel_color );
if (_bg != 0) {
state.pushStateSet(_bg.get());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
glBegin(GL_POLYGON);
glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X, WIN_Y);
glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + _width, WIN_Y);
glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + _width, WIN_Y + _height);
glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X, WIN_Y + _height);
glEnd();
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
} else {
for (int i = 0; i < 4; i ++) {
// top row of textures...(1,3,5,7)
state.pushStateSet(_mbg[i*2].get());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
glBegin(GL_POLYGON);
glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + _height);
glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + _height);
glEnd();
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
// bottom row of textures...(2,4,6,8)
state.pushStateSet(_mbg[i*2+1].get());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
glBegin(GL_POLYGON);
glTexCoord2f(0.0, 0.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y);
glTexCoord2f(1.0, 0.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y);
glTexCoord2f(1.0, 1.0); glVertex2f(WIN_X + (_width/4) * (i+1), WIN_Y + (_height/2));
glTexCoord2f(0.0, 1.0); glVertex2f(WIN_X + (_width/4) * i, WIN_Y + (_height/2));
glEnd();
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
}
}
// Draw the instruments.
// Syd Adams: added instrument clipping
instrument_list_type::const_iterator current = _instruments.begin();
instrument_list_type::const_iterator end = _instruments.end();
GLdouble blx[4]={1.0,0.0,0.0,0.0};
GLdouble bly[4]={0.0,1.0,0.0,0.0};
GLdouble urx[4]={-1.0,0.0,0.0,0.0};
GLdouble ury[4]={0.0,-1.0,0.0,0.0};
for ( ; current != end; current++) {
FGPanelInstrument * instr = *current;
glPushMatrix();
glTranslated(instr->getXPos(), instr->getYPos(), 0);
int ix= instr->getWidth();
int iy= instr->getHeight();
glPushMatrix();
glTranslated(-ix/2,-iy/2,0);
glClipPlane(GL_CLIP_PLANE0,blx);
glClipPlane(GL_CLIP_PLANE1,bly);
glEnable(GL_CLIP_PLANE0);
glEnable(GL_CLIP_PLANE1);
glTranslated(ix,iy,0);
glClipPlane(GL_CLIP_PLANE2,urx);
glClipPlane(GL_CLIP_PLANE3,ury);
glEnable(GL_CLIP_PLANE2);
glEnable(GL_CLIP_PLANE3);
glPopMatrix();
instr->draw(state);
glPopMatrix();
}
glDisable(GL_CLIP_PLANE0);
glDisable(GL_CLIP_PLANE1);
glDisable(GL_CLIP_PLANE2);
glDisable(GL_CLIP_PLANE3);
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
// Draw yellow "hotspots" if directed to. This is a panel authoring
// feature; not intended to be high performance or to look good.
if ( _drawPanelHotspots ) {
static osg::ref_ptr<osg::StateSet> hotspotStateSet;
if (!hotspotStateSet.valid()) {
hotspotStateSet = new osg::StateSet;
hotspotStateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
hotspotStateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
}
state.pushStateSet(hotspotStateSet.get());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
glPushAttrib(GL_ENABLE_BIT);
glDisable(GL_COLOR_MATERIAL);
glColor3f(1, 1, 0);
for ( unsigned int i = 0; i < _instruments.size(); i++ )
_instruments[i]->drawHotspots(state);
// disable drawing of panel extents for the 2.8 release, since it
// confused use of hot-spot drawing in tutorials.
#ifdef DRAW_PANEL_EXTENTS
glColor3f(0, 1, 1);
int x0, y0, x1, y1;
getLogicalExtent(x0, y0, x1, y1);
glBegin(GL_LINE_LOOP);
glVertex2f(x0, y0);
glVertex2f(x1, y0);
glVertex2f(x1, y1);
glVertex2f(x0, y1);
glEnd();
#endif
glPopAttrib();
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
}
}
/**
* Set the panel's background texture.
*/
void
FGPanel::setBackground (osg::Texture2D* texture)
{
osg::StateSet* stateSet = new osg::StateSet;
stateSet->setTextureAttribute(0, texture);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
_bg = stateSet;
}
/**
* Set the panel's multiple background textures.
*/
void
FGPanel::setMultiBackground (osg::Texture2D* texture, int idx)
{
_bg = 0;
osg::StateSet* stateSet = new osg::StateSet;
stateSet->setTextureAttribute(0, texture);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
_mbg[idx] = stateSet;
}
/**
* Set the panel's x-offset.
*/
void
FGPanel::setXOffset (int offset)
{
if (offset <= 0 && offset >= -_width + WIN_W)
_x_offset->setIntValue( offset );
}
/**
* Set the panel's y-offset.
*/
void
FGPanel::setYOffset (int offset)
{
if (offset <= 0 && offset >= -_height)
_y_offset->setIntValue( offset );
}
/**
* Handle a mouse action in panel-local (not screen) coordinates.
* Used by the 3D panel code in Model/panelnode.cxx, in situations
* where the panel doesn't control its own screen location.
*/
bool
FGPanel::doLocalMouseAction(int button, int updown, int x, int y)
{
// Note a released button and return
if (updown == 1) {
if (_mouseInstrument != 0)
_mouseInstrument->doMouseAction(_mouseButton, 1, _mouseX, _mouseY);
_mouseDown = false;
_mouseInstrument = 0;
return false;
}
// Search for a matching instrument.
for (int i = 0; i < (int)_instruments.size(); i++) {
FGPanelInstrument *inst = _instruments[i];
int ix = inst->getXPos();
int iy = inst->getYPos();
int iw = inst->getWidth() / 2;
int ih = inst->getHeight() / 2;
if (x >= ix - iw && x < ix + iw && y >= iy - ih && y < iy + ih) {
_mouseDown = true;
_mouseActionRepeat = MOUSE_ACTION_REPEAT_DELAY;
_mouseInstrument = inst;
_mouseButton = button;
_mouseX = x - ix;
_mouseY = y - iy;
// Always do the action once.
return _mouseInstrument->doMouseAction(_mouseButton, 0,
_mouseX, _mouseY);
}
}
return false;
}
/**
* Perform a mouse action.
*/
bool
FGPanel::doMouseAction (int button, int updown, int x, int y)
{
// FIXME: this same code appears in update()
int xsize = _xsize_node->getIntValue();
int ysize = _ysize_node->getIntValue();
float aspect_adjust = get_aspect_adjust(xsize, ysize);
// Scale for the real window size.
if (aspect_adjust < 1.0) {
x = int(((float)x / xsize) * WIN_W * aspect_adjust);
y = int(WIN_H - ((float(y) / ysize) * WIN_H));
} else {
x = int(((float)x / xsize) * WIN_W);
y = int((WIN_H - ((float(y) / ysize) * WIN_H)) / aspect_adjust);
}
// Adjust for offsets.
x -= _x_offset->getIntValue();
y -= _y_offset->getIntValue();
// Having fixed up the coordinates, fall through to the local
// coordinate handler.
return doLocalMouseAction(button, updown, x, y);
}
void FGPanel::setDepthTest (bool enable) {
_enable_depth_test = enable;
}
class IntRect
{
public:
IntRect() :
x0(std::numeric_limits<int>::max()),
y0(std::numeric_limits<int>::max()),
x1(std::numeric_limits<int>::min()),
y1(std::numeric_limits<int>::min())
{ }
IntRect(int x, int y, int w, int h) :
x0(x), y0(y), x1(x + w), y1( y + h)
{
if (x1 < x0) {
std::swap(x0, x1);
}
if (y1 < y0) {
std::swap(y0, y1);
}
assert(x0 <= x1);
assert(y0 <= y1);
}
void extend(const IntRect& r)
{
x0 = std::min(x0, r.x0);
y0 = std::min(y0, r.y0);
x1 = std::max(x1, r.x1);
y1 = std::max(y1, r.y1);
}
int x0, y0, x1, y1;
};
void FGPanel::getLogicalExtent(int &x0, int& y0, int& x1, int &y1)
{
IntRect result;
for (auto inst : _instruments) {
inst->extendRect(result);
}
x0 = result.x0;
y0 = result.y0;
x1 = result.x1;
y1 = result.y1;
}
////////////////////////////////////////////////////////////////////////.
// Implementation of FGPanelAction.
////////////////////////////////////////////////////////////////////////
FGPanelAction::FGPanelAction ()
{
}
FGPanelAction::FGPanelAction (int button, int x, int y, int w, int h,
bool repeatable)
: _button(button), _x(x), _y(y), _w(w), _h(h), _repeatable(repeatable)
{
}
FGPanelAction::~FGPanelAction ()
{
for (unsigned int i = 0; i < 2; i++) {
for (unsigned int j = 0; j < _bindings[i].size(); j++)
delete _bindings[i][j];
}
}
void
FGPanelAction::addBinding (SGBinding * binding, int updown)
{
_bindings[updown].push_back(binding);
}
bool
FGPanelAction::doAction (int updown)
{
if (test()) {
if ((updown != _last_state) || (updown == 0 && _repeatable)) {
int nBindings = _bindings[updown].size();
for (int i = 0; i < nBindings; i++)
_bindings[updown][i]->fire();
}
_last_state = updown;
return true;
} else {
return false;
}
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGPanelTransformation.
////////////////////////////////////////////////////////////////////////
FGPanelTransformation::FGPanelTransformation ()
: table(0)
{
}
FGPanelTransformation::~FGPanelTransformation ()
{
delete table;
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGPanelInstrument.
////////////////////////////////////////////////////////////////////////
FGPanelInstrument::FGPanelInstrument ()
{
setPosition(0, 0);
setSize(0, 0);
}
FGPanelInstrument::FGPanelInstrument (int x, int y, int w, int h)
{
setPosition(x, y);
setSize(w, h);
}
FGPanelInstrument::~FGPanelInstrument ()
{
for (action_list_type::iterator it = _actions.begin();
it != _actions.end();
it++) {
delete *it;
*it = 0;
}
}
void
FGPanelInstrument::drawHotspots(osg::State& state)
{
for ( unsigned int i = 0; i < _actions.size(); i++ ) {
FGPanelAction* a = _actions[i];
float x1 = getXPos() + a->getX();
float x2 = x1 + a->getWidth();
float y1 = getYPos() + a->getY();
float y2 = y1 + a->getHeight();
glBegin(GL_LINE_LOOP);
glVertex2f(x1, y1);
glVertex2f(x1, y2);
glVertex2f(x2, y2);
glVertex2f(x2, y1);
glEnd();
}
}
void
FGPanelInstrument::setPosition (int x, int y)
{
_x = x;
_y = y;
}
void
FGPanelInstrument::setSize (int w, int h)
{
_w = w;
_h = h;
}
int
FGPanelInstrument::getXPos () const
{
return _x;
}
int
FGPanelInstrument::getYPos () const
{
return _y;
}
int
FGPanelInstrument::getWidth () const
{
return _w;
}
int
FGPanelInstrument::getHeight () const
{
return _h;
}
void
FGPanelInstrument::extendRect(IntRect& r) const
{
IntRect instRect(_x, _y, _w, _h);
r.extend(instRect);
for (auto act : _actions) {
r.extend(IntRect(getXPos() + act->getX(),
getYPos() + act->getY(),
act->getWidth(),
act->getHeight()
));
}
}
void
FGPanelInstrument::addAction (FGPanelAction * action)
{
_actions.push_back(action);
}
// Coordinates relative to centre.
bool
FGPanelInstrument::doMouseAction (int button, int updown, int x, int y)
{
if (test()) {
action_list_type::iterator it = _actions.begin();
action_list_type::iterator last = _actions.end();
for ( ; it != last; it++) {
if ((*it)->inArea(button, x, y) &&
(*it)->doAction(updown))
return true;
}
}
return false;
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGLayeredInstrument.
////////////////////////////////////////////////////////////////////////
FGLayeredInstrument::FGLayeredInstrument (int x, int y, int w, int h)
: FGPanelInstrument(x, y, w, h)
{
}
FGLayeredInstrument::~FGLayeredInstrument ()
{
for (layer_list::iterator it = _layers.begin(); it != _layers.end(); it++) {
delete *it;
*it = 0;
}
}
void
FGLayeredInstrument::draw (osg::State& state)
{
if (!test())
return;
for (int i = 0; i < (int)_layers.size(); i++) {
glPushMatrix();
_layers[i]->draw(state);
glPopMatrix();
}
}
int
FGLayeredInstrument::addLayer (FGInstrumentLayer *layer)
{
int n = _layers.size();
if (layer->getWidth() == -1) {
layer->setWidth(getWidth());
}
if (layer->getHeight() == -1) {
layer->setHeight(getHeight());
}
_layers.push_back(layer);
return n;
}
int
FGLayeredInstrument::addLayer (const FGCroppedTexture &texture,
int w, int h)
{
return addLayer(new FGTexturedLayer(texture, w, h));
}
void
FGLayeredInstrument::addTransformation (FGPanelTransformation * transformation)
{
int layer = _layers.size() - 1;
_layers[layer]->addTransformation(transformation);
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGSpecialInstrument.
////////////////////////////////////////////////////////////////////////
FGSpecialInstrument::FGSpecialInstrument (DCLGPS* sb)
: FGPanelInstrument()
{
complex = sb;
}
FGSpecialInstrument::~FGSpecialInstrument ()
{
}
void
FGSpecialInstrument::draw (osg::State& state)
{
complex->draw(state);
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGInstrumentLayer.
////////////////////////////////////////////////////////////////////////
FGInstrumentLayer::FGInstrumentLayer (int w, int h)
: _w(w),
_h(h)
{
}
FGInstrumentLayer::~FGInstrumentLayer ()
{
for (transformation_list::iterator it = _transformations.begin();
it != _transformations.end();
it++) {
delete *it;
*it = 0;
}
}
void
FGInstrumentLayer::transform () const
{
transformation_list::const_iterator it = _transformations.begin();
transformation_list::const_iterator last = _transformations.end();
while (it != last) {
FGPanelTransformation *t = *it;
if (t->test()) {
float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
if (t->has_mod)
val = fmod(val, t->mod);
if (val < t->min) {
val = t->min;
} else if (val > t->max) {
val = t->max;
}
if (t->table==0) {
val = val * t->factor + t->offset;
} else {
val = t->table->interpolate(val) * t->factor + t->offset;
}
switch (t->type) {
case FGPanelTransformation::XSHIFT:
glTranslatef(val, 0.0, 0.0);
break;
case FGPanelTransformation::YSHIFT:
glTranslatef(0.0, val, 0.0);
break;
case FGPanelTransformation::ROTATION:
glRotatef(-val, 0.0, 0.0, 1.0);
break;
}
}
it++;
}
}
void
FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
{
_transformations.push_back(transformation);
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGGroupLayer.
////////////////////////////////////////////////////////////////////////
FGGroupLayer::FGGroupLayer ()
{
}
FGGroupLayer::~FGGroupLayer ()
{
for (unsigned int i = 0; i < _layers.size(); i++)
delete _layers[i];
}
void
FGGroupLayer::draw (osg::State& state)
{
if (test()) {
transform();
int nLayers = _layers.size();
for (int i = 0; i < nLayers; i++)
_layers[i]->draw(state);
}
}
void
FGGroupLayer::addLayer (FGInstrumentLayer * layer)
{
_layers.push_back(layer);
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGTexturedLayer.
////////////////////////////////////////////////////////////////////////
FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
: FGInstrumentLayer(w, h),
_emissive(false)
{
setTexture(texture);
}
FGTexturedLayer::~FGTexturedLayer ()
{
}
void
FGTexturedLayer::draw (osg::State& state)
{
if (test()) {
int w2 = _w / 2;
int h2 = _h / 2;
transform();
state.pushStateSet(_texture.getTexture());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
glBegin(GL_POLYGON);
if (_emissive) {
glColor4fv( emissive_panel_color );
} else {
// From Curt: turn on the panel
// lights after sundown.
glColor4fv( panel_color );
}
glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
glEnd();
state.popStateSet();
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
}
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGTextLayer.
////////////////////////////////////////////////////////////////////////
FGTextLayer::FGTextLayer (int w, int h)
: FGInstrumentLayer(w, h), _pointSize(14.0), _font_name("Helvetica.txf")
{
_then.stamp();
_color[0] = _color[1] = _color[2] = 0.0;
_color[3] = 1.0;
}
FGTextLayer::~FGTextLayer ()
{
chunk_list::iterator it = _chunks.begin();
chunk_list::iterator last = _chunks.end();
for ( ; it != last; it++) {
delete *it;
}
}
void
FGTextLayer::draw (osg::State& state)
{
if (test()) {
glColor4fv(_color);
transform();
fntFont* font = FGFontCache::instance()->getTexFont(_font_name);
if (!font) {
return; // don't crash on missing fonts
}
text_renderer.setFont(font);
text_renderer.setPointSize(_pointSize);
text_renderer.begin();
text_renderer.start3f(0, 0, 0);
_now.stamp();
double diff = (_now - _then).toUSecs();
if (diff > 100000 || diff < 0 ) {
// ( diff < 0 ) is a sanity check and indicates our time stamp
// difference math probably overflowed. We can handle a max
// difference of 35.8 minutes since the returned value is in
// usec. So if the panel is left off longer than that we can
// over flow the math with it is turned back on. This (diff <
// 0) catches that situation, get's us out of trouble, and
// back on track.
recalc_value();
_then = _now;
}
// Something is goofy. The code in this file renders only CCW
// polygons, and I have verified that the font code in plib
// renders only CCW trianbles. Yet they come out backwards.
// Something around here or in plib is either changing the winding
// order or (more likely) pushing a left-handed matrix onto the
// stack. But I can't find it; get out the chainsaw...
glFrontFace(GL_CW);
text_renderer.puts((char *)(_value.c_str()));
glFrontFace(GL_CCW);
text_renderer.end();
glColor4f(1.0, 1.0, 1.0, 1.0); // FIXME
}
}
void
FGTextLayer::addChunk (FGTextLayer::Chunk * chunk)
{
_chunks.push_back(chunk);
}
void
FGTextLayer::setColor (float r, float g, float b)
{
_color[0] = r;
_color[1] = g;
_color[2] = b;
_color[3] = 1.0;
}
void
FGTextLayer::setPointSize (float size)
{
_pointSize = size;
}
void
FGTextLayer::setFontName(const std::string &name)
{
_font_name = name + ".txf";
fntFont* font = FGFontCache::instance()->getTexFont(_font_name);
if (!font) {
SG_LOG(SG_COCKPIT, SG_WARN, "unable to find font:" << name);
}
}
void
FGTextLayer::setFont(fntFont * font)
{
text_renderer.setFont(font);
}
void
FGTextLayer::recalc_value () const
{
_value = "";
chunk_list::const_iterator it = _chunks.begin();
chunk_list::const_iterator last = _chunks.end();
for ( ; it != last; it++) {
_value += (*it)->getValue();
}
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGTextLayer::Chunk.
////////////////////////////////////////////////////////////////////////
FGTextLayer::Chunk::Chunk (const std::string &text, const std::string &fmt)
: _type(FGTextLayer::TEXT),
_fmt(simgear::strutils::sanitizePrintfFormat(fmt))
{
_text = text;
if (_fmt.empty())
_fmt = "%s";
}
FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
const std::string &fmt, float mult, float offs,
bool truncation)
: _type(type),
_fmt(simgear::strutils::sanitizePrintfFormat(fmt)),
_mult(mult),
_offs(offs),
_trunc(truncation)
{
if (_fmt.empty()) {
if (type == TEXT_VALUE)
_fmt = "%s";
else
_fmt = "%.2f";
}
_node = node;
}
const char *
FGTextLayer::Chunk::getValue () const
{
if (test()) {
_buf[0] = '\0';
switch (_type) {
case TEXT:
sprintf(_buf, _fmt.c_str(), _text.c_str());
return _buf;
case TEXT_VALUE:
sprintf(_buf, _fmt.c_str(), _node->getStringValue().c_str());
break;
case DOUBLE_VALUE:
double d = _offs + _node->getFloatValue() * _mult;
if (_trunc) d = (d < 0) ? -floor(-d) : floor(d);
sprintf(_buf, _fmt.c_str(), d);
break;
}
return _buf;
} else {
return "";
}
}
////////////////////////////////////////////////////////////////////////
// Implementation of FGSwitchLayer.
////////////////////////////////////////////////////////////////////////
FGSwitchLayer::FGSwitchLayer ()
: FGGroupLayer()
{
}
void
FGSwitchLayer::draw (osg::State& state)
{
if (test()) {
transform();
int nLayers = _layers.size();
for (int i = 0; i < nLayers; i++) {
if (_layers[i]->test()) {
_layers[i]->draw(state);
return;
}
}
}
}
// end of panel.cxx
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