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Centralized most view-management code in FGViewMgr. It's still a

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mess, but the mess is all in one place now.
This commit is contained in:
david 2002-03-14 00:29:20 +00:00
parent 9a27019df1
commit 45d64bef95
8 changed files with 392 additions and 472 deletions
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2
src/Main/fg_commands.cxx
View file

@ -243,7 +243,7 @@ static bool
do_view_cycle (const SGPropertyNode * arg, SGCommandState ** state)
{
globals->get_current_view()->set_view_offset(0.0);
globals->set_current_view(globals->get_viewmgr()->next_view());
globals->get_viewmgr()->next_view();
if ( fgGetString("/sim/flight-model") == "ada" ) {
globals->get_props()->setBoolValue( "/sim/hud/visibility", true );
if ( globals->get_viewmgr()->get_current() == 1 ) {

27
src/Main/fg_init.cxx
View file

@ -588,32 +588,7 @@ void fgInitFDM() {
// Initialize view parameters
void fgInitView() {
// Initialize pilot view
static const SGPropertyNode *longitude
= fgGetNode("/position/longitude-deg");
static const SGPropertyNode *latitude
= fgGetNode("/position/latitude-deg");
static const SGPropertyNode *altitude
= fgGetNode("/position/altitude-ft");
FGViewerRPH *pilot_view
= (FGViewerRPH *)globals->get_viewmgr()->get_view( 0 );
pilot_view->set_geod_view_pos( longitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
latitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
altitude->getDoubleValue()
* SG_FEET_TO_METER );
pilot_view->set_rph( cur_fdm_state->get_Phi(),
cur_fdm_state->get_Theta(),
cur_fdm_state->get_Psi() );
// set current view to 0 (first) which is our main pilot view
globals->set_current_view( pilot_view );
SG_LOG( SG_GENERAL, SG_DEBUG, " abs_view_pos = "
<< globals->get_current_view()->get_abs_view_pos());
globals->get_viewmgr()->update(0);
}

243
src/Main/fg_props.cxx
View file

@ -44,7 +44,6 @@
#include "globals.hxx"
#include "fgfs.hxx"
#include "fg_props.hxx"
#include "viewmgr.hxx"
#if !defined(SG_HAVE_NATIVE_SGI_COMPILERS)
SG_USING_STD(istream);
@ -57,67 +56,11 @@ static double getWindEast ();
static double getWindDown ();
#endif // FG_NEW_ENVIRONMENT
// Allow the view to be set from two axes (i.e. a joystick hat)
// This needs to be in FGViewer itself, somehow.
static double axisLong = 0.0;
static double axisLat = 0.0;
static bool winding_ccw = true; // FIXME: temporary
static bool fdm_data_logging = false; // FIXME: temporary
/**
* Utility function.
*/
static inline void
_set_view_from_axes ()
{
// Take no action when hat is centered
if ( ( axisLong < 0.01 ) &&
( axisLong > -0.01 ) &&
( axisLat < 0.01 ) &&
( axisLat > -0.01 )
)
return;
double viewDir = 999;
/* Do all the quick and easy cases */
if (axisLong < 0) { // Longitudinal axis forward
if (axisLat == axisLong)
viewDir = 45;
else if (axisLat == - axisLong)
viewDir = 315;
else if (axisLat == 0)
viewDir = 0;
} else if (axisLong > 0) { // Longitudinal axis backward
if (axisLat == - axisLong)
viewDir = 135;
else if (axisLat == axisLong)
viewDir = 225;
else if (axisLat == 0)
viewDir = 180;
} else if (axisLong == 0) { // Longitudinal axis neutral
if (axisLat < 0)
viewDir = 90;
else if (axisLat > 0)
viewDir = 270;
else return; /* And assertion failure maybe? */
}
/* Do all the difficult cases */
if ( viewDir > 900 )
viewDir = SGD_RADIANS_TO_DEGREES * atan2 ( -axisLat, -axisLong );
if ( viewDir < -1 ) viewDir += 360;
// SG_LOG(SG_INPUT, SG_ALERT, "Joystick Lat=" << axisLat << " and Long="
// << axisLong << " gave angle=" << viewDir );
globals->get_current_view()->set_goal_view_offset(viewDir*SGD_DEGREES_TO_RADIANS);
// globals->get_current_view()->set_view_offset(viewDir*SGD_DEGREES_TO_RADIANS);
}
////////////////////////////////////////////////////////////////////////
// Default property bindings (not yet handled by any module).
@ -317,143 +260,6 @@ setAircraftDir (string dir)
}
/**
* Get the current view offset in degrees.
*/
static double
getViewOffset ()
{
return (globals->get_current_view()
->get_view_offset() * SGD_RADIANS_TO_DEGREES);
}
static void
setViewOffset (double offset)
{
globals->get_current_view()->set_view_offset(offset * SGD_DEGREES_TO_RADIANS);
}
static double
getGoalViewOffset ()
{
return (globals->get_current_view()
->get_goal_view_offset() * SGD_RADIANS_TO_DEGREES);
}
static void
setGoalViewOffset (double offset)
{
while ( offset < 0 ) {
offset += 360.0;
}
while ( offset > 360.0 ) {
offset -= 360.0;
}
// Snap to center if we are close
if ( fabs(offset) < 1.0 || fabs(offset) > 359.0 ) {
offset = 0.0;
}
globals->get_current_view()
->set_goal_view_offset(offset * SGD_DEGREES_TO_RADIANS);
}
/**
* Get the current view tilt in degrees.
*/
static double
getViewTilt ()
{
return (globals->get_current_view()
->get_view_tilt() * SGD_RADIANS_TO_DEGREES);
}
static void
setViewTilt (double tilt)
{
globals->get_current_view()->set_view_tilt(tilt * SGD_DEGREES_TO_RADIANS);
}
static double
getGoalViewTilt ()
{
return (globals->get_current_view()
->get_goal_view_tilt() * SGD_RADIANS_TO_DEGREES);
}
static void
setGoalViewTilt (double tilt)
{
while ( tilt < 0 ) {
tilt += 360.0;
}
while ( tilt > 360.0 ) {
tilt -= 360.0;
}
// Snap to center if we are close
if ( fabs(tilt) < 1.0 || fabs(tilt) > 359.0 ) {
tilt = 0.0;
}
globals->get_current_view()
->set_goal_view_tilt(tilt * SGD_DEGREES_TO_RADIANS);
}
/**
* Pilot position offset from CG.
*/
static float
getPilotPositionXOffset ()
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
return offset[0];
}
static void
setPilotPositionXOffset (float x)
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(x, offset[1], offset[2]);
}
static float
getPilotPositionYOffset ()
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
return offset[1];
}
static void
setPilotPositionYOffset (float y)
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(offset[0], y, offset[2]);
}
static float
getPilotPositionZOffset ()
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
return offset[2];
}
static void
setPilotPositionZOffset (float z)
{
FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(offset[0], offset[1], z);
}
/**
* Return the number of milliseconds elapsed since simulation started.
*/
@ -686,20 +492,6 @@ setWindDown (double speed)
#endif // FG_NEW_ENVIRONMENT
static double
getFOV ()
{
return globals->get_current_view()->get_fov();
}
static void
setFOV (double fov)
{
if ( fov < 180 ) {
globals->get_current_view()->set_fov( fov );
}
}
static long
getWarp ()
{
@ -724,18 +516,6 @@ setWarpDelta (long delta)
globals->set_warp_delta(delta);
}
static void
setViewAxisLong (double axis)
{
axisLong = axis;
}
static void
setViewAxisLat (double axis)
{
axisLat = axis;
}
static bool
getWindingCCW ()
{
@ -802,22 +582,7 @@ fgInitProps ()
fgTie("/sim/logging/classes", getLoggingClasses, setLoggingClasses);
// fgTie("/sim/freeze", getFreeze, setFreeze);
fgTie("/sim/aircraft-dir", getAircraftDir, setAircraftDir);
fgTie("/sim/view/offset-deg", getViewOffset, setViewOffset, false);
fgSetArchivable("/sim/view/offset-deg");
fgTie("/sim/view/goal-offset-deg", getGoalViewOffset, setGoalViewOffset, false);
fgTie("/sim/view/tilt-deg", getViewTilt, setViewTilt, false);
fgSetArchivable("/sim/view/tilt-deg");
fgTie("/sim/view/goal-tilt-deg", getGoalViewTilt, setGoalViewTilt, false);
fgSetArchivable("/sim/view/goal-offset-deg");
fgTie("/sim/view/pilot/x-offset-m",
getPilotPositionXOffset, setPilotPositionXOffset);
fgSetArchivable("/sim/view/pilot/x-offset-m");
fgTie("/sim/view/pilot/y-offset-m",
getPilotPositionYOffset, setPilotPositionYOffset);
fgSetArchivable("/sim/view/pilot/y-offset-m");
fgTie("/sim/view/pilot/z-offset-m",
getPilotPositionZOffset, setPilotPositionZOffset);
fgSetArchivable("/sim/view/pilot/z-offset-m");
fgTie("/sim/time/elapsed-ms", getElapsedTime_ms);
fgTie("/sim/time/gmt", getDateString, setDateString);
fgSetArchivable("/sim/time/gmt");
@ -842,13 +607,8 @@ fgInitProps ()
fgTie("/environment/magnetic-variation-deg", getMagVar);
fgTie("/environment/magnetic-dip-deg", getMagDip);
// View
fgTie("/sim/field-of-view", getFOV, setFOV);
fgSetArchivable("/sim/field-of-view");
fgTie("/sim/time/warp", getWarp, setWarp, false);
fgTie("/sim/time/warp-delta", getWarpDelta, setWarpDelta);
fgTie("/sim/view/axes/long", (double(*)())0, setViewAxisLong);
fgTie("/sim/view/axes/lat", (double(*)())0, setViewAxisLat);
// Misc. Temporary junk.
fgTie("/sim/temp/winding-ccw", getWindingCCW, setWindingCCW, false);
@ -861,7 +621,6 @@ fgInitProps ()
void
fgUpdateProps ()
{
_set_view_from_axes();
}

134
src/Main/fg_props.hxx
View file

@ -451,140 +451,6 @@ fgUntie (const string &name)
}
// Templates cause ambiguity here
/**
* Tie a property to an external bool variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, bool *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<bool>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to an external int variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, int *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<int>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to an external long variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, long *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<long>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to an external float variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, float *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<float>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to an external double variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, double *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<double>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to an external string variable.
*
* The property's value will automatically mirror the variable's
* value, and vice-versa, until the property is untied.
*
* @param name The property name to tie (full path).
* @param pointer A pointer to the variable.
* @param useDefault true if any existing property value should be
* copied to the variable; false if the variable should not
* be modified; defaults to true.
*/
inline void
fgTie (const string &name, string *pointer, bool useDefault = true)
{
if (!globals->get_props()->tie(name, SGRawValuePointer<string>(pointer),
useDefault))
SG_LOG(SG_GENERAL, SG_WARN,
"Failed to tie property " << name << " to a pointer");
}
/**
* Tie a property to a pair of simple functions.
*

9
src/Main/globals.hxx
View file

@ -37,6 +37,8 @@
#include <simgear/misc/commands.hxx>
#include <simgear/misc/props.hxx>
#include "viewmgr.hxx"
SG_USING_STD( vector );
SG_USING_STD( string );
@ -51,7 +53,6 @@ class FGControls;
class FGSoundMgr;
class FGAutopilot;
class FGFX;
class FGViewMgr;
class FGViewer;
class FGATCMgr;
class FGATCDisplay;
@ -125,7 +126,6 @@ private:
// viewer manager
FGViewMgr *viewmgr;
FGViewer *current_view;
// properties
SGPropertyNode *props;
@ -215,8 +215,9 @@ public:
inline FGViewMgr *get_viewmgr() const { return viewmgr; }
inline void set_viewmgr( FGViewMgr *vm ) { viewmgr = vm; }
inline FGViewer *get_current_view() const { return current_view; }
inline void set_current_view( FGViewer *v ) { current_view = v; }
inline FGViewer *get_current_view() const {
return viewmgr->get_current_view();
}
inline SGPropertyNode *get_props () { return props; }
inline void set_props( SGPropertyNode *n ) { props = n; }

59
src/Main/main.cxx
View file

@ -87,7 +87,6 @@
#include <FDM/UIUCModel/uiuc_aircraftdir.h>
#include <GUI/gui.h>
#include <GUI/sgVec3Slider.hxx>
// #include <Joystick/joystick.hxx>
#ifdef FG_NETWORK_OLK
#include <NetworkOLK/network.h>
@ -446,51 +445,6 @@ void fgRenderFrame( void ) {
// calculate our current position in cartesian space
scenery.set_center( scenery.get_next_center() );
FGViewerRPH *pilot_view =
(FGViewerRPH *)globals->get_viewmgr()->get_view( 0 );
pilot_view->set_geod_view_pos( longitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
latitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
altitude->getDoubleValue()
* SG_FEET_TO_METER );
pilot_view->set_rph( cur_fdm_state->get_Phi(),
cur_fdm_state->get_Theta(),
cur_fdm_state->get_Psi() );
if (fgGetString("/sim/flight-model") == "ada") {
//+ve x is aft, +ve z is up (see viewer.hxx)
pilot_view->set_pilot_offset( -5.0, 0.0, 1.0 );
}
FGViewerLookAt *chase_view =
(FGViewerLookAt *)globals->get_viewmgr()->get_view( 1 );
sgVec3 po; // chase view pilot_offset
sgVec3 wup; // chase view world up
sgSetVec3( po, 0.0, 0.0, 100.0 );
sgCopyVec3( wup, pilot_view->get_world_up() );
sgMat4 CXFM; // chase view + pilot offset xform
sgMakeRotMat4( CXFM,
chase_view->get_view_offset() * SGD_RADIANS_TO_DEGREES -
cur_fdm_state->get_Psi() * SGD_RADIANS_TO_DEGREES,
wup );
sgVec3 npo; // new pilot offset after rotation
sgVec3 *pPO = PilotOffsetGet();
sgXformVec3( po, *pPO, pilot_view->get_UP() );
sgXformVec3( npo, po, CXFM );
chase_view->set_geod_view_pos( longitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
latitude->getDoubleValue()
* SGD_DEGREES_TO_RADIANS,
altitude->getDoubleValue()
* SG_FEET_TO_METER );
chase_view->set_pilot_offset( npo[0], npo[1], npo[2] );
chase_view->set_view_forward( pilot_view->get_view_pos() );
chase_view->set_view_up( wup );
// update view port
fgReshape( fgGetInt("/sim/startup/xsize"),
fgGetInt("/sim/startup/ysize") );
@ -870,7 +824,7 @@ void fgUpdateTimeDepCalcs() {
}
// update the view angle
globals->get_current_view()->update(multi_loop);
globals->get_viewmgr()->update(multi_loop);
l->UpdateAdjFog();
@ -1384,19 +1338,12 @@ int mainLoop( int argc, char **argv ) {
FGViewMgr *viewmgr = new FGViewMgr;
globals->set_viewmgr( viewmgr );
FGViewerRPH *pv = new FGViewerRPH;
globals->get_viewmgr()->add_view( pv );
FGViewerLookAt *chase = new FGViewerLookAt;
globals->get_viewmgr()->add_view( chase );
viewmgr->init();
viewmgr->bind();
string_list *col = new string_list;
globals->set_channel_options_list( col );
// set current view to 0 (first) which is our main pilot view
globals->set_current_view( globals->get_viewmgr()->get_view( 0 ) );
// Scan the config file(s) and command line options to see if
// fg_root was specified (ignore all other options for now)
fgInitFGRoot(argc, argv);

328
src/Main/viewmgr.cxx
View file

@ -20,12 +20,18 @@
//
// $Id$
#include <plib/sg.h>
#include <GUI/sgVec3Slider.hxx> // FIXME: this should NOT be needed
#include "viewmgr.hxx"
#include "fg_props.hxx"
// Constructor
FGViewMgr::FGViewMgr( void ) :
axis_long(0),
axis_lat(0),
current(0)
{
}
@ -34,3 +40,325 @@ FGViewMgr::FGViewMgr( void ) :
// Destructor
FGViewMgr::~FGViewMgr( void ) {
}
void
FGViewMgr::init ()
{
add_view(new FGViewerRPH);
add_view(new FGViewerLookAt);
}
typedef double (FGViewMgr::*double_getter)() const;
void
FGViewMgr::bind ()
{
fgTie("/sim/view/offset-deg", this,
&FGViewMgr::getViewOffset_deg, &FGViewMgr::setViewOffset_deg);
fgSetArchivable("/sim/view/offset-deg");
fgTie("/sim/view/goal-offset-deg", this,
&FGViewMgr::getGoalViewOffset_deg, &FGViewMgr::setGoalViewOffset_deg);
fgSetArchivable("/sim/view/goal-offset-deg");
fgTie("/sim/view/tilt-deg", this,
&FGViewMgr::getViewTilt_deg, &FGViewMgr::setViewTilt_deg);
fgSetArchivable("/sim/view/tilt-deg");
fgTie("/sim/view/goal-tilt-deg", this,
&FGViewMgr::getGoalViewTilt_deg, &FGViewMgr::setGoalViewTilt_deg);
fgSetArchivable("/sim/view/goal-tilt-deg");
fgTie("/sim/view/pilot/x-offset-m", this,
&FGViewMgr::getPilotXOffset_m, &FGViewMgr::setPilotXOffset_m);
fgSetArchivable("/sim/view/pilot/x-offset-m");
fgTie("/sim/view/pilot/y-offset-m", this,
&FGViewMgr::getPilotYOffset_m, &FGViewMgr::setPilotYOffset_m);
fgSetArchivable("/sim/view/pilot/y-offset-m");
fgTie("/sim/view/pilot/z-offset-m", this,
&FGViewMgr::getPilotZOffset_m, &FGViewMgr::setPilotZOffset_m);
fgSetArchivable("/sim/view/pilot/z-offset-m");
fgTie("/sim/field-of-view", this,
&FGViewMgr::getFOV_deg, &FGViewMgr::setFOV_deg);
fgSetArchivable("/sim/field-of-view");
fgTie("/sim/view/axes/long", this,
(double_getter)0, &FGViewMgr::setViewAxisLong);
fgTie("/sim/view/axes/lat", this,
(double_getter)0, &FGViewMgr::setViewAxisLat);
}
void
FGViewMgr::unbind ()
{
fgUntie("/sim/view/offset-deg");
fgUntie("/sim/view/goal-offset-deg");
fgUntie("/sim/view/tilt-deg");
fgUntie("/sim/view/goal-tilt-deg");
fgUntie("/sim/view/pilot/x-offset-m");
fgUntie("/sim/view/pilot/y-offset-m");
fgUntie("/sim/view/pilot/z-offset-m");
fgUntie("/sim/field-of-view");
fgUntie("/sim/view/axes/long");
fgUntie("/sim/view/axes/lat");
}
void
FGViewMgr::update (int dt)
{
FGViewer * view = get_current_view();
if (view == 0)
return;
// Grab some values we'll need.
double lon_rad = fgGetDouble("/position/longitude-deg")
* SGD_DEGREES_TO_RADIANS;
double lat_rad = fgGetDouble("/position/latitude-deg")
* SGD_DEGREES_TO_RADIANS;
double alt_m = fgGetDouble("/position/altitude-ft")
* SG_FEET_TO_METER;
double roll_rad = fgGetDouble("/orientation/roll-deg")
* SGD_DEGREES_TO_RADIANS;
double pitch_rad = fgGetDouble("/orientation/pitch-deg")
* SGD_DEGREES_TO_RADIANS;
double heading_rad = fgGetDouble("/orientation/heading-deg")
* SGD_DEGREES_TO_RADIANS;
// Set up the pilot view
FGViewerRPH *pilot_view = (FGViewerRPH *)get_view( 0 );
pilot_view ->set_geod_view_pos(lon_rad, lat_rad, alt_m);
pilot_view->set_rph(roll_rad, pitch_rad, heading_rad);
if (fgGetString("/sim/flight-model") == "ada") {
//+ve x is aft, +ve z is up (see viewer.hxx)
pilot_view->set_pilot_offset( -5.0, 0.0, 1.0 );
}
// Set up the chase view
// FIXME: the matrix math belongs in
// the viewer, not here.
FGViewerLookAt *chase_view = (FGViewerLookAt *)get_view( 1 );
sgVec3 po; // chase view pilot_offset
sgVec3 wup; // chase view world up
sgSetVec3( po, 0.0, 0.0, 100.0 );
sgCopyVec3( wup, pilot_view->get_world_up() );
sgMat4 CXFM; // chase view + pilot offset xform
sgMakeRotMat4( CXFM,
chase_view->get_view_offset() * SGD_RADIANS_TO_DEGREES -
heading_rad * SGD_RADIANS_TO_DEGREES,
wup );
sgVec3 npo; // new pilot offset after rotation
sgVec3 *pPO = PilotOffsetGet();
sgXformVec3( po, *pPO, pilot_view->get_UP() );
sgXformVec3( npo, po, CXFM );
chase_view->set_geod_view_pos(lon_rad, lat_rad, alt_m);
chase_view->set_pilot_offset( npo[0], npo[1], npo[2] );
chase_view->set_view_forward( pilot_view->get_view_pos() );
chase_view->set_view_up( wup );
// Update the current view
do_axes();
view->update(dt);
}
double
FGViewMgr::getViewOffset_deg () const
{
const FGViewer * view = get_current_view();
return (view == 0 ? 0 : view->get_view_offset() * SGD_RADIANS_TO_DEGREES);
}
void
FGViewMgr::setViewOffset_deg (double offset)
{
FGViewer * view = get_current_view();
if (view != 0)
view->set_view_offset(offset * SGD_DEGREES_TO_RADIANS);
std::cout << "View offset is now " << offset << std::endl;
}
double
FGViewMgr::getGoalViewOffset_deg () const
{
const FGViewer * view = get_current_view();
return (view == 0 ? 0 : view->get_goal_view_offset() * SGD_RADIANS_TO_DEGREES);
}
void
FGViewMgr::setGoalViewOffset_deg (double offset)
{
FGViewer * view = get_current_view();
if (view != 0)
view->set_goal_view_offset(offset * SGD_DEGREES_TO_RADIANS);
std::cout << "Goal view offset is now " << offset << std::endl;
}
double
FGViewMgr::getViewTilt_deg () const
{
const FGViewer * view = get_current_view();
return (view == 0 ? 0 : view->get_view_tilt() * SGD_RADIANS_TO_DEGREES);
}
void
FGViewMgr::setViewTilt_deg (double tilt)
{
FGViewer * view = get_current_view();
if (view != 0)
view->set_view_tilt(tilt * SGD_DEGREES_TO_RADIANS);
}
double
FGViewMgr::getGoalViewTilt_deg () const
{
const FGViewer * view = get_current_view();
return (view == 0 ? 0 : view->get_goal_view_tilt() * SGD_RADIANS_TO_DEGREES);
}
void
FGViewMgr::setGoalViewTilt_deg (double tilt)
{
FGViewer * view = get_current_view();
if (view != 0)
view->set_goal_view_tilt(tilt * SGD_DEGREES_TO_RADIANS);
}
double
FGViewMgr::getPilotXOffset_m () const
{
// FIXME: hard-coded pilot view position
const FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = ((FGViewer *)pilot_view)->get_pilot_offset();
return offset[0];
} else {
return 0;
}
}
void
FGViewMgr::setPilotXOffset_m (double x)
{
// FIXME: hard-coded pilot view position
FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(x, offset[1], offset[2]);
}
}
double
FGViewMgr::getPilotYOffset_m () const
{
// FIXME: hard-coded pilot view position
const FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = ((FGViewer *)pilot_view)->get_pilot_offset();
return offset[1];
} else {
return 0;
}
}
void
FGViewMgr::setPilotYOffset_m (double y)
{
// FIXME: hard-coded pilot view position
FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(offset[0], y, offset[2]);
}
}
double
FGViewMgr::getPilotZOffset_m () const
{
// FIXME: hard-coded pilot view position
const FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = ((FGViewer *)pilot_view)->get_pilot_offset();
return offset[2];
} else {
return 0;
}
}
void
FGViewMgr::setPilotZOffset_m (double z)
{
// FIXME: hard-coded pilot view position
FGViewer * pilot_view = get_view(0);
if (pilot_view != 0) {
float * offset = pilot_view->get_pilot_offset();
pilot_view->set_pilot_offset(offset[0], offset[1], z);
}
}
double
FGViewMgr::getFOV_deg () const
{
const FGViewer * view = get_current_view();
return (view == 0 ? 0 : view->get_fov());
}
void
FGViewMgr::setFOV_deg (double fov)
{
FGViewer * view = get_current_view();
if (view != 0)
view->set_fov(fov);
}
void
FGViewMgr::setViewAxisLong (double axis)
{
axis_long = axis;
}
void
FGViewMgr::setViewAxisLat (double axis)
{
axis_lat = axis;
}
void
FGViewMgr::do_axes ()
{
// Take no action when hat is centered
if ( ( axis_long < 0.01 ) &&
( axis_long > -0.01 ) &&
( axis_lat < 0.01 ) &&
( axis_lat > -0.01 )
)
return;
double viewDir = 999;
/* Do all the quick and easy cases */
if (axis_long < 0) { // Longitudinal axis forward
if (axis_lat == axis_long)
viewDir = 45;
else if (axis_lat == - axis_long)
viewDir = 315;
else if (axis_lat == 0)
viewDir = 0;
} else if (axis_long > 0) { // Longitudinal axis backward
if (axis_lat == - axis_long)
viewDir = 135;
else if (axis_lat == axis_long)
viewDir = 225;
else if (axis_lat == 0)
viewDir = 180;
} else if (axis_long == 0) { // Longitudinal axis neutral
if (axis_lat < 0)
viewDir = 90;
else if (axis_lat > 0)
viewDir = 270;
else return; /* And assertion failure maybe? */
}
// Do all the difficult cases
if ( viewDir > 900 )
viewDir = SGD_RADIANS_TO_DEGREES * atan2 ( -axis_lat, -axis_long );
if ( viewDir < -1 ) viewDir += 360;
get_current_view()->set_goal_view_offset(viewDir*SGD_DEGREES_TO_RADIANS);
}

60
src/Main/viewmgr.hxx
View file

@ -38,6 +38,7 @@
#include <vector>
#include "fgfs.hxx"
#include "viewer_lookat.hxx"
#include "viewer_rph.hxx"
@ -45,14 +46,8 @@ SG_USING_STD(vector);
// Define a structure containing view information
class FGViewMgr {
private:
typedef vector < FGViewer * > viewer_list;
viewer_list views;
int current;
class FGViewMgr : public FGSubsystem
{
public:
@ -62,6 +57,11 @@ public:
// Destructor
~FGViewMgr( void );
virtual void init ();
virtual void bind ();
virtual void unbind ();
virtual void update (int dt);
// getters
inline int size() const { return views.size(); }
inline int get_current() const { return current; }
@ -72,11 +72,23 @@ public:
return NULL;
}
}
inline const FGViewer *get_current_view() const {
if ( current < (int)views.size() ) {
return views[current];
} else {
return NULL;
}
}
inline FGViewer *get_view( int i ) {
if ( i < 0 ) { i = 0; }
if ( i >= (int)views.size() ) { i = views.size() - 1; }
return views[i];
}
inline const FGViewer *get_view( int i ) const {
if ( i < 0 ) { i = 0; }
if ( i >= (int)views.size() ) { i = views.size() - 1; }
return views[i];
}
inline FGViewer *next_view() {
++current;
if ( current >= (int)views.size() ) {
@ -98,6 +110,38 @@ public:
inline void add_view( FGViewer * v ) {
views.push_back(v);
}
private:
double axis_long;
double axis_lat;
void do_axes ();
double getViewOffset_deg () const;
void setViewOffset_deg (double offset);
double getGoalViewOffset_deg () const;
void setGoalViewOffset_deg (double offset);
double getViewTilt_deg () const;
void setViewTilt_deg (double tilt);
double getGoalViewTilt_deg () const;
void setGoalViewTilt_deg (double tilt);
double getPilotXOffset_m () const;
void setPilotXOffset_m (double x);
double getPilotYOffset_m () const;
void setPilotYOffset_m (double y);
double getPilotZOffset_m () const;
void setPilotZOffset_m (double z);
double getFOV_deg () const;
void setFOV_deg (double fov);
void setViewAxisLong (double axis);
void setViewAxisLat (double axis);
typedef vector < FGViewer * > viewer_list;
viewer_list views;
int current;
};