Fix bug with new Sky code
git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@4750 30fe4595-0a0c-4342-8851-515496e4dcbd Former-commit-id: 8a3ffcba48f3d16b03fb8d10ee9386db287ce0d6 Former-commit-id: ba2795268b7267aa435678f5954b4fa9b1aaed9d
This commit is contained in:
torcs-ng
parent
ceb957a3e8
commit
f52c4fc8d2
4 changed files with 403 additions and 438 deletions
|
|
@ -75,12 +75,12 @@ ssgBranch * cGrMoon::build( double moon_size )
|
|||
moon_state->enable( GL_ALPHA_TEST );
|
||||
moon_state->setAlphaClamp( 0.01 );
|
||||
|
||||
cl = new ssgColourArray( 1 );
|
||||
moon_cl = new ssgColourArray( 1 );
|
||||
sgVec4 color;
|
||||
sgSetVec4( color, 1.0, 1.0, 1.0, 1.0 );
|
||||
cl->add( color );
|
||||
moon_cl->add( color );
|
||||
|
||||
ssgBranch *moon = grMakeSphere( moon_state, cl, moon_size, 15, 15,
|
||||
ssgBranch *moon = grMakeSphere( moon_state, moon_cl, moon_size, 15, 15,
|
||||
grMoonOrbPreDraw, grMoonOrbPostDraw );
|
||||
|
||||
repaint( 0.0 );
|
||||
|
|
@ -112,14 +112,14 @@ bool cGrMoon::repaint( double moon_angle )
|
|||
grGammaCorrectRGB( color );
|
||||
|
||||
float *ptr;
|
||||
ptr = cl->get( 0 );
|
||||
ptr = moon_cl->get( 0 );
|
||||
sgCopyVec4( ptr, color );
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool cGrMoon::reposition(sgVec3 p, double moonangle, double moonrightAscension, double moondeclination, double moon_dist)
|
||||
bool cGrMoon::reposition(sgVec3 p, double moon_angle, double moonrightAscension, double moondeclination, double moon_dist)
|
||||
{
|
||||
sgMat4 T1, T2, GST, RA, DEC;
|
||||
sgVec3 axis;
|
||||
|
|
@ -128,11 +128,11 @@ bool cGrMoon::reposition(sgVec3 p, double moonangle, double moonrightAscension,
|
|||
sgMakeTransMat4( T1, p );
|
||||
|
||||
sgSetVec3( axis, 0.0, 0.0, -1.0 );
|
||||
sgMakeRotMat4( GST, (float)moonangle, axis );
|
||||
sgMakeRotMat4( GST, moon_angle, axis );
|
||||
sgSetVec3( axis, 0.0, 0.0, 1.0 );
|
||||
sgMakeRotMat4( RA, ((float)moonrightAscension * SGD_RADIANS_TO_DEGREES) - 90.0, axis );
|
||||
sgMakeRotMat4( RA, (moonrightAscension * SGD_RADIANS_TO_DEGREES) - 90.0, axis );
|
||||
sgSetVec3( axis, 1.0, 0.0, 0.0 );
|
||||
sgMakeRotMat4( DEC, (float)moondeclination * SGD_RADIANS_TO_DEGREES, axis );
|
||||
sgMakeRotMat4( DEC, moondeclination * SGD_RADIANS_TO_DEGREES, axis );
|
||||
sgSetVec3( v, 0.0, moon_dist, 0.0 );
|
||||
sgMakeTransMat4( T2, v );
|
||||
|
||||
|
|
|
|||
|
|
@ -99,7 +99,7 @@ void cGrSky::build( double h_radius, double v_radius,
|
|||
sun->setSunDistance( sun_dist );
|
||||
|
||||
moon = new cGrMoon;
|
||||
moon_transform ->addKid( sun->build( moon_size));
|
||||
moon_transform ->addKid( moon->build( moon_size));
|
||||
moon->setMoonDist(moon_dist);
|
||||
|
||||
planets = new cGrStars;
|
||||
|
|
@ -150,6 +150,7 @@ bool cGrSky::repositionFlat( sgVec3 view_pos, double spin, double dt )
|
|||
double rotation;
|
||||
sgCoord pos;
|
||||
|
||||
|
||||
sun->reposition( view_pos, 0 );
|
||||
moon->reposition( view_pos, 0 );
|
||||
|
||||
|
|
|
|||
|
|
@ -143,12 +143,8 @@ class cGrMoon
|
|||
private:
|
||||
ssgTransform *moon_transform;
|
||||
ssgSimpleState *moon_state;
|
||||
ssgSimpleState *halo_state;
|
||||
|
||||
ssgColourArray *cl;
|
||||
|
||||
ssgVertexArray *halo_vl;
|
||||
ssgTexCoordArray *halo_tl;
|
||||
ssgColourArray *moon_cl;
|
||||
|
||||
double prev_moon_angle;
|
||||
double moon_angle;
|
||||
|
|
@ -174,12 +170,7 @@ public:
|
|||
// 0 degrees = high noon
|
||||
// 90 degrees = moon rise/set
|
||||
// 180 degrees = darkest midnight
|
||||
|
||||
//bool repaint(double moon_angle);
|
||||
|
||||
/*bool reposition( sgVec3 p, double angle,
|
||||
double rightAscension, double declination,
|
||||
double moon_dist );*/
|
||||
bool repaint(double moon_angle);
|
||||
|
||||
bool reposition(sgVec3 p, double moon_angle)
|
||||
{
|
||||
|
|
@ -187,9 +178,9 @@ public:
|
|||
}
|
||||
|
||||
bool reposition(sgVec3 p, double moon_angle, double moonAscension, double moondeclination, double moon_dist);
|
||||
bool repaint(double moon_angle);
|
||||
|
||||
void getMoonPosition (sgCoord* p)
|
||||
|
||||
void getMoonPosition (sgCoord* p)
|
||||
{
|
||||
sgMat4 Xform;
|
||||
moon_transform->getTransform(Xform);
|
||||
|
|
@ -224,11 +215,9 @@ private:
|
|||
ssgColourArray *ihalo_cl;
|
||||
ssgColourArray *ohalo_cl;
|
||||
|
||||
ssgVertexArray *sun_vl;
|
||||
ssgVertexArray *ihalo_vl;
|
||||
ssgVertexArray *ohalo_vl;
|
||||
|
||||
ssgTexCoordArray *sun_tl;
|
||||
ssgTexCoordArray *ihalo_tl;
|
||||
ssgTexCoordArray *ohalo_tl;
|
||||
|
||||
|
|
|
|||
|
|
@ -1,415 +1,390 @@
|
|||
/***************************************************************************
|
||||
|
||||
file : grSun.cpp
|
||||
copyright : (C) 2009 by Xavier Bertaux (based on ssgasky plib code)
|
||||
web : http://www.speed-dreams.org
|
||||
version : $Id: grSky.cpp 3162 2010-12-05 13:11:22Z pouillot $
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
/***************************************************************************
|
||||
* *
|
||||
* 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. *
|
||||
* *
|
||||
***************************************************************************/
|
||||
|
||||
#include <plib/sg.h>
|
||||
#include <plib/ssg.h>
|
||||
#include "grSky.h"
|
||||
#include "grSphere.h"
|
||||
|
||||
static float sun_exp2_punch_through;
|
||||
static double visibility;
|
||||
|
||||
// Set up sun rendering call backs
|
||||
static int grSunPreDraw( ssgEntity *e )
|
||||
{
|
||||
ssgLeaf *f = (ssgLeaf *)e;
|
||||
if ( f -> hasState () ) f->getState()->apply() ;
|
||||
|
||||
glPushAttrib( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_FOG_BIT );
|
||||
glDisable( GL_DEPTH_TEST );
|
||||
glDisable( GL_FOG );
|
||||
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunPostDraw( ssgEntity *e )
|
||||
{
|
||||
glPopAttrib();
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunHaloPreDraw( ssgEntity *e )
|
||||
{
|
||||
ssgLeaf *f = (ssgLeaf *)e;
|
||||
if ( f -> hasState () ) f->getState()->apply();
|
||||
|
||||
glPushAttrib( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_FOG_BIT );
|
||||
glDisable( GL_DEPTH_TEST );
|
||||
glFogf (GL_FOG_DENSITY, sun_exp2_punch_through);
|
||||
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunHaloPostDraw( ssgEntity *e )
|
||||
{
|
||||
glPopAttrib();
|
||||
return true;
|
||||
}
|
||||
|
||||
// Constructor
|
||||
cGrSun::cGrSun( void )
|
||||
{
|
||||
sun_transform = 0;
|
||||
prev_sun_angle = -9999.0;
|
||||
visibility = -9999.0;
|
||||
}
|
||||
|
||||
// Destructor
|
||||
cGrSun::~cGrSun( void )
|
||||
{
|
||||
ssgDeRefDelete( sun_transform );
|
||||
}
|
||||
|
||||
ssgBranch * cGrSun::build( double sun_size )
|
||||
{
|
||||
ssgDeRefDelete( sun_transform );
|
||||
|
||||
sun_transform = new ssgTransform;
|
||||
sun_transform->ref();
|
||||
|
||||
sgVec4 color;
|
||||
sgSetVec4( color, 1.0, 1.0, 1.0, 1.0 );
|
||||
|
||||
sun_cl = new ssgColourArray( 1 );
|
||||
sun_cl->add( color );
|
||||
|
||||
ihalo_cl = new ssgColourArray( 1 );
|
||||
ihalo_cl->add( color );
|
||||
|
||||
ohalo_cl = new ssgColourArray( 1 );
|
||||
ohalo_cl->add( color );
|
||||
|
||||
//repaint( 0.0, 1.0 );
|
||||
|
||||
// set up the sun-state
|
||||
sun_state = new ssgSimpleState();
|
||||
sun_state->setShadeModel( GL_SMOOTH );
|
||||
sun_state->disable( GL_LIGHTING );
|
||||
sun_state->disable( GL_CULL_FACE );
|
||||
sun_state->setTexture( "data/textures/inner_halo.png");
|
||||
sun_state->enable( GL_TEXTURE_2D );
|
||||
sun_state->enable( GL_COLOR_MATERIAL );
|
||||
sun_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
sun_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
sun_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
sun_state->enable( GL_BLEND );
|
||||
sun_state->setAlphaClamp( 0.01 );
|
||||
sun_state->enable( GL_ALPHA_TEST );
|
||||
|
||||
// Build ssg structure
|
||||
|
||||
sgVec3 va;
|
||||
sun_vl = new ssgVertexArray;
|
||||
sgSetVec3( va, -sun_size, 0.0, -sun_size );
|
||||
sun_vl->add( va );
|
||||
sgSetVec3( va, sun_size, 0.0, -sun_size );
|
||||
sun_vl->add( va );
|
||||
sgSetVec3( va, -sun_size, 0.0, sun_size );
|
||||
sun_vl->add( va );
|
||||
sgSetVec3( va, sun_size, 0.0, sun_size );
|
||||
sun_vl->add( va );
|
||||
|
||||
sgVec2 vb;
|
||||
sun_tl = new ssgTexCoordArray;
|
||||
sgSetVec2( vb, 0.0f, 0.0f );
|
||||
sun_tl->add( vb );
|
||||
sgSetVec2( vb, 1.0, 0.0 );
|
||||
sun_tl->add( vb );
|
||||
sgSetVec2( vb, 0.0, 1.0 );
|
||||
sun_tl->add( vb );
|
||||
sgSetVec2( vb, 1.0, 1.0 );
|
||||
sun_tl->add( vb );
|
||||
|
||||
ssgBranch *sun = grMakeSphere( sun_state, sun_cl, sun_size, 15, 15,
|
||||
grSunPreDraw, grSunPostDraw );
|
||||
|
||||
repaint( 0.0, 1.0 );
|
||||
|
||||
ihalo_state = new ssgSimpleState();
|
||||
ihalo_state->setTexture( "data/textures/inner_halo.png" );
|
||||
ihalo_state->enable( GL_TEXTURE_2D );
|
||||
ihalo_state->disable( GL_LIGHTING );
|
||||
ihalo_state->setShadeModel( GL_SMOOTH );
|
||||
ihalo_state->disable( GL_CULL_FACE );
|
||||
ihalo_state->enable( GL_COLOR_MATERIAL );
|
||||
ihalo_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
ihalo_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
ihalo_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
ihalo_state->enable( GL_ALPHA_TEST );
|
||||
ihalo_state->setAlphaClamp(0.01);
|
||||
ihalo_state->enable ( GL_BLEND ) ;
|
||||
|
||||
float ihalo_size = sun_size * 2.0;
|
||||
sgVec3 vc;
|
||||
ihalo_vl = new ssgVertexArray;
|
||||
sgSetVec3( vc, -ihalo_size, 0.0, -ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, ihalo_size, 0.0, -ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, -ihalo_size, 0.0, ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, ihalo_size, 0.0, ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
|
||||
sgVec2 vd;
|
||||
ihalo_tl = new ssgTexCoordArray;
|
||||
sgSetVec2( vd, 0.0f, 0.0f );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 1.0, 0.0 );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 0.0, 1.0 );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 1.0, 1.0 );
|
||||
ihalo_tl->add( vd );
|
||||
|
||||
ssgLeaf *ihalo = new ssgVtxTable ( GL_TRIANGLE_STRIP, ihalo_vl, NULL, ihalo_tl, ihalo_cl );
|
||||
ihalo->setState( ihalo_state );
|
||||
|
||||
ohalo_state = new ssgSimpleState();
|
||||
ohalo_state->setTexture( "data/textures/outer_halo.png" );
|
||||
ohalo_state->enable( GL_TEXTURE_2D );
|
||||
ohalo_state->disable( GL_LIGHTING );
|
||||
ohalo_state->setShadeModel( GL_SMOOTH );
|
||||
ohalo_state->disable( GL_CULL_FACE );
|
||||
ohalo_state->enable( GL_COLOR_MATERIAL );
|
||||
ohalo_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
ohalo_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
ohalo_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
ohalo_state->enable( GL_ALPHA_TEST );
|
||||
ohalo_state->setAlphaClamp(0.01);
|
||||
ohalo_state->enable ( GL_BLEND ) ;
|
||||
|
||||
float ohalo_size = (float)sun_size * 7.0;
|
||||
sgVec3 ve;
|
||||
ohalo_vl = new ssgVertexArray;
|
||||
sgSetVec3( ve, -ohalo_size, 0.0, -ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, ohalo_size, 0.0, -ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, -ohalo_size, 0.0, ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, ohalo_size, 0.0, ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
|
||||
sgVec2 vf;
|
||||
ohalo_tl = new ssgTexCoordArray;
|
||||
sgSetVec2( vf, 0.0f, 0.0f );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 1.0, 0.0 );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 0.0, 1.0 );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 1.0, 1.0 );
|
||||
ohalo_tl->add( vf );
|
||||
|
||||
ssgLeaf *ohalo = new ssgVtxTable ( GL_TRIANGLE_STRIP, ohalo_vl, NULL, ohalo_tl, ohalo_cl );
|
||||
ohalo->setState( ohalo_state );
|
||||
|
||||
ihalo->setCallback( SSG_CALLBACK_PREDRAW, grSunHaloPreDraw );
|
||||
ihalo->setCallback( SSG_CALLBACK_POSTDRAW, grSunHaloPostDraw );
|
||||
ohalo->setCallback( SSG_CALLBACK_PREDRAW, grSunHaloPreDraw );
|
||||
ohalo->setCallback( SSG_CALLBACK_POSTDRAW, grSunHaloPostDraw );
|
||||
|
||||
sun_transform->addKid( ohalo );
|
||||
sun_transform->addKid( ihalo );
|
||||
sun_transform->addKid( sun );
|
||||
|
||||
return sun_transform;
|
||||
}
|
||||
|
||||
bool cGrSun::repaint( double sun_angle, double new_visibility )
|
||||
{
|
||||
if ( visibility != new_visibility )
|
||||
{
|
||||
visibility = new_visibility;
|
||||
|
||||
static const float sqrt_m_log01 = sqrt( -log( 0.01 ) );
|
||||
sun_exp2_punch_through = sqrt_m_log01 / ( visibility * 15 );
|
||||
}
|
||||
|
||||
if ( prev_sun_angle != sun_angle )
|
||||
{
|
||||
prev_sun_angle = sun_angle;
|
||||
|
||||
float aerosol_factor;
|
||||
if ( visibility < 100 )
|
||||
{
|
||||
aerosol_factor = 8000;
|
||||
}
|
||||
else
|
||||
{
|
||||
aerosol_factor = 80.5 / log( visibility / 100 );
|
||||
}
|
||||
|
||||
float rel_humidity, density_avg;
|
||||
|
||||
/*if ( !env_node )
|
||||
{*/
|
||||
rel_humidity = 0.5;
|
||||
density_avg = 0.7;
|
||||
/*}
|
||||
else
|
||||
{
|
||||
//rel_humidity = env_node->getFloatValue( "relative-humidity" );
|
||||
//density_avg = env_node->getFloatValue( "atmosphere/density-tropo-avg" );
|
||||
}*/
|
||||
|
||||
sgVec4 i_halo_color, o_halo_color, sun_color;
|
||||
|
||||
float red_scat_f = ( aerosol_factor * path_distance * density_avg ) / 5E+07;
|
||||
sun_color[0] = 1 - red_scat_f;
|
||||
i_halo_color[0] = 1 - ( 1.1 * red_scat_f );
|
||||
o_halo_color[0] = 1 - ( 1.4 * red_scat_f );
|
||||
|
||||
// Green - 546.1 nm
|
||||
float green_scat_f = ( aerosol_factor * path_distance * density_avg ) / 8.8938E+06;
|
||||
sun_color[1] = 1 - green_scat_f;
|
||||
i_halo_color[1] = 1 - ( 1.1 * green_scat_f );
|
||||
o_halo_color[1] = 1 - ( 1.4 * green_scat_f );
|
||||
|
||||
// Blue - 435.8 nm
|
||||
float blue_scat_f = ( aerosol_factor * path_distance * density_avg ) / 3.607E+06;
|
||||
sun_color[2] = 1 - blue_scat_f;
|
||||
i_halo_color[2] = 1 - ( 1.1 * blue_scat_f );
|
||||
o_halo_color[2] = 1 - ( 1.4 * blue_scat_f );
|
||||
|
||||
// Alpha
|
||||
sun_color[3] = 1;
|
||||
i_halo_color[3] = 1;
|
||||
|
||||
o_halo_color[3] = blue_scat_f;
|
||||
if ( ( new_visibility < 10000 ) && ( blue_scat_f > 1 ))
|
||||
{
|
||||
o_halo_color[3] = 2 - blue_scat_f;
|
||||
}
|
||||
|
||||
float saturation = 1 - ( rel_humidity / 200 );
|
||||
sun_color[1] += (( 1 - saturation ) * ( 1 - sun_color[1] ));
|
||||
sun_color[2] += (( 1 - saturation ) * ( 1 - sun_color[2] ));
|
||||
|
||||
i_halo_color[1] += (( 1 - saturation ) * ( 1 - i_halo_color[1] ));
|
||||
i_halo_color[2] += (( 1 - saturation ) * ( 1 - i_halo_color[2] ));
|
||||
|
||||
o_halo_color[1] += (( 1 - saturation ) * ( 1 - o_halo_color[1] ));
|
||||
o_halo_color[2] += (( 1 - saturation ) * ( 1 - o_halo_color[2] ));
|
||||
|
||||
// just to make sure we're in the limits
|
||||
if ( sun_color[0] < 0 ) sun_color[0] = 0;
|
||||
else if ( sun_color[0] > 1) sun_color[0] = 1;
|
||||
if ( i_halo_color[0] < 0 ) i_halo_color[0] = 0;
|
||||
else if ( i_halo_color[0] > 1) i_halo_color[0] = 1;
|
||||
if ( o_halo_color[0] < 0 ) o_halo_color[0] = 0;
|
||||
else if ( o_halo_color[0] > 1) o_halo_color[0] = 1;
|
||||
|
||||
if ( sun_color[1] < 0 ) sun_color[1] = 0;
|
||||
else if ( sun_color[1] > 1) sun_color[1] = 1;
|
||||
if ( i_halo_color[1] < 0 ) i_halo_color[1] = 0;
|
||||
else if ( i_halo_color[1] > 1) i_halo_color[1] = 1;
|
||||
if ( o_halo_color[1] < 0 ) o_halo_color[1] = 0;
|
||||
else if ( o_halo_color[1] > 1) o_halo_color[1] = 1;
|
||||
|
||||
if ( sun_color[2] < 0 ) sun_color[2] = 0;
|
||||
else if ( sun_color[2] > 1) sun_color[2] = 1;
|
||||
if ( i_halo_color[2] < 0 ) i_halo_color[2] = 0;
|
||||
else if ( i_halo_color[2] > 1) i_halo_color[2] = 1;
|
||||
if ( o_halo_color[2] < 0 ) o_halo_color[2] = 0;
|
||||
else if ( o_halo_color[2] > 1) o_halo_color[2] = 1;
|
||||
if ( o_halo_color[3] < 0 ) o_halo_color[2] = 0;
|
||||
else if ( o_halo_color[3] > 1) o_halo_color[3] = 1;
|
||||
|
||||
|
||||
grGammaCorrectRGB( i_halo_color );
|
||||
grGammaCorrectRGB( o_halo_color );
|
||||
grGammaCorrectRGB( sun_color );
|
||||
|
||||
|
||||
float *ptr;
|
||||
ptr = sun_cl->get( 0 );
|
||||
sgCopyVec4( ptr, sun_color );
|
||||
ptr = ihalo_cl->get( 0 );
|
||||
sgCopyVec4( ptr, i_halo_color );
|
||||
ptr = ohalo_cl->get( 0 );
|
||||
sgCopyVec4( ptr, o_halo_color );
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool cGrSun::reposition( sgVec3 p, double angle, double rightAscension, double declination, double sun_dist )
|
||||
{
|
||||
sgMat4 T1, T2, GST, RA, DEC;
|
||||
sgVec3 axis;
|
||||
sgVec3 v;
|
||||
|
||||
sgMakeTransMat4( T1, p );
|
||||
sgSetVec3( axis, 0.0, 0.0, -1.0 );
|
||||
sgMakeRotMat4( GST, (float)angle, axis );
|
||||
sgSetVec3( axis, 0.0, 0.0, 1.0 );
|
||||
sgMakeRotMat4( RA, ((float)rightAscension * SGD_RADIANS_TO_DEGREES) - 90.0, axis );
|
||||
sgSetVec3( axis, 1.0, 0.0, 0.0 );
|
||||
sgMakeRotMat4( DEC, (float)declination * SGD_RADIANS_TO_DEGREES, axis );
|
||||
|
||||
sgSetVec3( v, 0.0, sun_dist, 0.0 );
|
||||
sgMakeTransMat4( T2, v );
|
||||
|
||||
sgMat4 TRANSFORM;
|
||||
sgCopyMat4( TRANSFORM, T1 );
|
||||
sgPreMultMat4( TRANSFORM, GST );
|
||||
sgPreMultMat4( TRANSFORM, RA );
|
||||
sgPreMultMat4( TRANSFORM, DEC );
|
||||
sgPreMultMat4( TRANSFORM, T2 );
|
||||
|
||||
sgCoord skypos;
|
||||
sgSetCoord( &skypos, TRANSFORM );
|
||||
|
||||
sun_transform->setTransform( &skypos );
|
||||
|
||||
if ( prev_sun_angle != sun_angle )
|
||||
{
|
||||
if ( sun_angle == 0 ) sun_angle = 0.1;
|
||||
const double r_earth_pole = 6356752.314;
|
||||
const double r_tropo_pole = 6356752.314 + 8000;
|
||||
const double epsilon_earth2 = 6.694380066E-3;
|
||||
const double epsilon_tropo2 = 9.170014946E-3;
|
||||
|
||||
double r_tropo = r_tropo_pole / sqrt ( 1 - ( epsilon_tropo2 * pow ( cos( 0.0 ), 2 )));
|
||||
double r_earth = r_earth_pole / sqrt ( 1 - ( epsilon_earth2 * pow ( cos( 0.0 ), 2 )));
|
||||
|
||||
double position_radius = r_earth;
|
||||
|
||||
double gamma = SG_PI - sun_angle;
|
||||
double sin_beta = ( position_radius * sin ( gamma ) ) / r_tropo;
|
||||
double alpha = SG_PI - gamma - asin( sin_beta );
|
||||
|
||||
path_distance = sqrt( pow( position_radius, 2 ) + pow( r_tropo, 2 )
|
||||
- ( 2 * position_radius * r_tropo * cos( alpha ) ));
|
||||
|
||||
double alt_half = sqrt( pow ( r_tropo, 2 ) + pow( path_distance / 2, 2 ) - r_tropo * path_distance * cos( asin( sin_beta )) ) - r_earth;
|
||||
|
||||
if ( alt_half < 0.0 ) alt_half = 0.0;
|
||||
|
||||
/*if ( env_node )
|
||||
{
|
||||
//env_node->setDoubleValue( "atmosphere/altitude-troposphere-top", r_tropo - r_earth );
|
||||
//env_node->setDoubleValue( "atmosphere/altitude-half-to-sun", alt_half );
|
||||
}*/
|
||||
}
|
||||
|
||||
return true;
|
||||
/***************************************************************************
|
||||
|
||||
file : grSun.cpp
|
||||
copyright : (C) 2009 by Xavier Bertaux (based on ssgasky plib code)
|
||||
web : http://www.speed-dreams.org
|
||||
version : $Id: grSky.cpp 3162 2010-12-05 13:11:22Z pouillot $
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
/***************************************************************************
|
||||
* *
|
||||
* 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. *
|
||||
* *
|
||||
***************************************************************************/
|
||||
|
||||
#include <plib/sg.h>
|
||||
#include <plib/ssg.h>
|
||||
#include "grSky.h"
|
||||
#include "grSphere.h"
|
||||
|
||||
static float sun_exp2_punch_through;
|
||||
static double visibility;
|
||||
|
||||
// Set up sun rendering call backs
|
||||
static int grSunPreDraw( ssgEntity *e )
|
||||
{
|
||||
ssgLeaf *f = (ssgLeaf *)e;
|
||||
if ( f -> hasState () ) f->getState()->apply() ;
|
||||
|
||||
glPushAttrib( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_FOG_BIT );
|
||||
glDisable( GL_DEPTH_TEST );
|
||||
glDisable( GL_FOG );
|
||||
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunPostDraw( ssgEntity *e )
|
||||
{
|
||||
glPopAttrib();
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunHaloPreDraw( ssgEntity *e )
|
||||
{
|
||||
ssgLeaf *f = (ssgLeaf *)e;
|
||||
if ( f -> hasState () ) f->getState()->apply();
|
||||
|
||||
glPushAttrib( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_FOG_BIT );
|
||||
glDisable( GL_DEPTH_TEST );
|
||||
glFogf (GL_FOG_DENSITY, sun_exp2_punch_through);
|
||||
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static int grSunHaloPostDraw( ssgEntity *e )
|
||||
{
|
||||
glPopAttrib();
|
||||
return true;
|
||||
}
|
||||
|
||||
// Constructor
|
||||
cGrSun::cGrSun( void )
|
||||
{
|
||||
sun_transform = 0;
|
||||
prev_sun_angle = -9999.0;
|
||||
visibility = -9999.0;
|
||||
}
|
||||
|
||||
// Destructor
|
||||
cGrSun::~cGrSun( void )
|
||||
{
|
||||
ssgDeRefDelete( sun_transform );
|
||||
}
|
||||
|
||||
ssgBranch * cGrSun::build( double sun_size )
|
||||
{
|
||||
ssgDeRefDelete( sun_transform );
|
||||
|
||||
sun_transform = new ssgTransform;
|
||||
sun_transform->ref();
|
||||
|
||||
sgVec4 color;
|
||||
sgSetVec4( color, 1.0, 1.0, 1.0, 1.0 );
|
||||
|
||||
sun_cl = new ssgColourArray( 1 );
|
||||
sun_cl->add( color );
|
||||
|
||||
ihalo_cl = new ssgColourArray( 1 );
|
||||
ihalo_cl->add( color );
|
||||
|
||||
ohalo_cl = new ssgColourArray( 1 );
|
||||
ohalo_cl->add( color );
|
||||
|
||||
//repaint( 0.0, 1.0 );
|
||||
|
||||
// set up the sun-state
|
||||
sun_state = new ssgSimpleState();
|
||||
sun_state->setShadeModel( GL_SMOOTH );
|
||||
sun_state->disable( GL_LIGHTING );
|
||||
sun_state->enable( GL_CULL_FACE );
|
||||
sun_state->disable( GL_TEXTURE_2D );
|
||||
sun_state->enable( GL_COLOR_MATERIAL );
|
||||
sun_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
sun_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
sun_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
sun_state->disable( GL_BLEND );
|
||||
sun_state->setAlphaClamp( 0.01 );
|
||||
sun_state->disable( GL_ALPHA_TEST );
|
||||
|
||||
ssgBranch *sun = grMakeSphere( sun_state, sun_cl, sun_size, 15, 15,
|
||||
grSunPreDraw, grSunPostDraw );
|
||||
|
||||
repaint( 0.0, 10000.0 );
|
||||
|
||||
ihalo_state = new ssgSimpleState();
|
||||
ihalo_state->setTexture( "data/textures/inner_halo.png" );
|
||||
ihalo_state->enable( GL_TEXTURE_2D );
|
||||
ihalo_state->disable( GL_LIGHTING );
|
||||
ihalo_state->setShadeModel( GL_SMOOTH );
|
||||
ihalo_state->disable( GL_CULL_FACE );
|
||||
ihalo_state->enable( GL_COLOR_MATERIAL );
|
||||
ihalo_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
ihalo_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
ihalo_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
ihalo_state->enable( GL_ALPHA_TEST );
|
||||
ihalo_state->setAlphaClamp(0.01);
|
||||
ihalo_state->enable ( GL_BLEND ) ;
|
||||
|
||||
float ihalo_size = sun_size * 2.0;
|
||||
sgVec3 vc;
|
||||
ihalo_vl = new ssgVertexArray;
|
||||
sgSetVec3( vc, -ihalo_size, 0.0, -ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, ihalo_size, 0.0, -ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, -ihalo_size, 0.0, ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
sgSetVec3( vc, ihalo_size, 0.0, ihalo_size );
|
||||
ihalo_vl->add( vc );
|
||||
|
||||
sgVec2 vd;
|
||||
ihalo_tl = new ssgTexCoordArray;
|
||||
sgSetVec2( vd, 0.0f, 0.0f );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 1.0, 0.0 );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 0.0, 1.0 );
|
||||
ihalo_tl->add( vd );
|
||||
sgSetVec2( vd, 1.0, 1.0 );
|
||||
ihalo_tl->add( vd );
|
||||
|
||||
ssgLeaf *ihalo = new ssgVtxTable ( GL_TRIANGLE_STRIP, ihalo_vl, NULL, ihalo_tl, ihalo_cl );
|
||||
ihalo->setState( ihalo_state );
|
||||
|
||||
ohalo_state = new ssgSimpleState();
|
||||
ohalo_state->setTexture( "data/textures/outer_halo.png" );
|
||||
ohalo_state->enable( GL_TEXTURE_2D );
|
||||
ohalo_state->disable( GL_LIGHTING );
|
||||
ohalo_state->setShadeModel( GL_SMOOTH );
|
||||
ohalo_state->disable( GL_CULL_FACE );
|
||||
ohalo_state->enable( GL_COLOR_MATERIAL );
|
||||
ohalo_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
|
||||
ohalo_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
|
||||
ohalo_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
|
||||
ohalo_state->enable( GL_ALPHA_TEST );
|
||||
ohalo_state->setAlphaClamp(0.01);
|
||||
ohalo_state->enable ( GL_BLEND ) ;
|
||||
|
||||
float ohalo_size = (float)sun_size * 7.0;
|
||||
sgVec3 ve;
|
||||
ohalo_vl = new ssgVertexArray;
|
||||
sgSetVec3( ve, -ohalo_size, 0.0, -ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, ohalo_size, 0.0, -ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, -ohalo_size, 0.0, ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
sgSetVec3( ve, ohalo_size, 0.0, ohalo_size );
|
||||
ohalo_vl->add( ve );
|
||||
|
||||
sgVec2 vf;
|
||||
ohalo_tl = new ssgTexCoordArray;
|
||||
sgSetVec2( vf, 0.0f, 0.0f );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 1.0, 0.0 );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 0.0, 1.0 );
|
||||
ohalo_tl->add( vf );
|
||||
sgSetVec2( vf, 1.0, 1.0 );
|
||||
ohalo_tl->add( vf );
|
||||
|
||||
ssgLeaf *ohalo = new ssgVtxTable ( GL_TRIANGLE_STRIP, ohalo_vl, NULL, ohalo_tl, ohalo_cl );
|
||||
ohalo->setState( ohalo_state );
|
||||
|
||||
ihalo->setCallback( SSG_CALLBACK_PREDRAW, grSunHaloPreDraw );
|
||||
ihalo->setCallback( SSG_CALLBACK_POSTDRAW, grSunHaloPostDraw );
|
||||
ohalo->setCallback( SSG_CALLBACK_PREDRAW, grSunHaloPreDraw );
|
||||
ohalo->setCallback( SSG_CALLBACK_POSTDRAW, grSunHaloPostDraw );
|
||||
|
||||
sun_transform->addKid( ohalo );
|
||||
sun_transform->addKid( ihalo );
|
||||
sun_transform->addKid( sun );
|
||||
|
||||
return sun_transform;
|
||||
}
|
||||
|
||||
bool cGrSun::repaint( double sun_angle, double new_visibility )
|
||||
{
|
||||
if ( visibility != new_visibility )
|
||||
{
|
||||
visibility = new_visibility;
|
||||
|
||||
static const float sqrt_m_log01 = sqrt( -log( 0.01 ) );
|
||||
sun_exp2_punch_through = sqrt_m_log01 / ( visibility * 15 );
|
||||
}
|
||||
|
||||
if ( prev_sun_angle != sun_angle )
|
||||
{
|
||||
prev_sun_angle = sun_angle;
|
||||
|
||||
float aerosol_factor;
|
||||
if ( visibility < 100 )
|
||||
{
|
||||
aerosol_factor = 8000;
|
||||
}
|
||||
else
|
||||
{
|
||||
aerosol_factor = 80.5 / log( visibility / 100 );
|
||||
}
|
||||
|
||||
float rel_humidity, density_avg;
|
||||
|
||||
/*if ( !env_node )
|
||||
{*/
|
||||
rel_humidity = 0.5;
|
||||
density_avg = 0.7;
|
||||
/*}
|
||||
else
|
||||
{
|
||||
//rel_humidity = env_node->getFloatValue( "relative-humidity" );
|
||||
//density_avg = env_node->getFloatValue( "atmosphere/density-tropo-avg" );
|
||||
}*/
|
||||
|
||||
sgVec4 i_halo_color, o_halo_color, sun_color;
|
||||
|
||||
float red_scat_f = ( aerosol_factor * path_distance * density_avg ) / 5E+07;
|
||||
sun_color[0] = 1 - red_scat_f;
|
||||
i_halo_color[0] = 1 - ( 1.1 * red_scat_f );
|
||||
o_halo_color[0] = 1 - ( 1.4 * red_scat_f );
|
||||
|
||||
// Green - 546.1 nm
|
||||
float green_scat_f = ( aerosol_factor * path_distance * density_avg ) / 8.8938E+06;
|
||||
sun_color[1] = 1 - green_scat_f;
|
||||
i_halo_color[1] = 1 - ( 1.1 * green_scat_f );
|
||||
o_halo_color[1] = 1 - ( 1.4 * green_scat_f );
|
||||
|
||||
// Blue - 435.8 nm
|
||||
float blue_scat_f = ( aerosol_factor * path_distance * density_avg ) / 3.607E+06;
|
||||
sun_color[2] = 1 - blue_scat_f;
|
||||
i_halo_color[2] = 1 - ( 1.1 * blue_scat_f );
|
||||
o_halo_color[2] = 1 - ( 1.4 * blue_scat_f );
|
||||
|
||||
// Alpha
|
||||
sun_color[3] = 1;
|
||||
i_halo_color[3] = 1;
|
||||
|
||||
o_halo_color[3] = blue_scat_f;
|
||||
if ( ( new_visibility < 10000 ) && ( blue_scat_f > 1 ))
|
||||
{
|
||||
o_halo_color[3] = 2 - blue_scat_f;
|
||||
}
|
||||
|
||||
float saturation = 1 - ( rel_humidity / 200 );
|
||||
sun_color[1] += (( 1 - saturation ) * ( 1 - sun_color[1] ));
|
||||
sun_color[2] += (( 1 - saturation ) * ( 1 - sun_color[2] ));
|
||||
|
||||
i_halo_color[1] += (( 1 - saturation ) * ( 1 - i_halo_color[1] ));
|
||||
i_halo_color[2] += (( 1 - saturation ) * ( 1 - i_halo_color[2] ));
|
||||
|
||||
o_halo_color[1] += (( 1 - saturation ) * ( 1 - o_halo_color[1] ));
|
||||
o_halo_color[2] += (( 1 - saturation ) * ( 1 - o_halo_color[2] ));
|
||||
|
||||
// just to make sure we're in the limits
|
||||
if ( sun_color[0] < 0 ) sun_color[0] = 0;
|
||||
else if ( sun_color[0] > 1) sun_color[0] = 1;
|
||||
if ( i_halo_color[0] < 0 ) i_halo_color[0] = 0;
|
||||
else if ( i_halo_color[0] > 1) i_halo_color[0] = 1;
|
||||
if ( o_halo_color[0] < 0 ) o_halo_color[0] = 0;
|
||||
else if ( o_halo_color[0] > 1) o_halo_color[0] = 1;
|
||||
|
||||
if ( sun_color[1] < 0 ) sun_color[1] = 0;
|
||||
else if ( sun_color[1] > 1) sun_color[1] = 1;
|
||||
if ( i_halo_color[1] < 0 ) i_halo_color[1] = 0;
|
||||
else if ( i_halo_color[1] > 1) i_halo_color[1] = 1;
|
||||
if ( o_halo_color[1] < 0 ) o_halo_color[1] = 0;
|
||||
else if ( o_halo_color[1] > 1) o_halo_color[1] = 1;
|
||||
|
||||
if ( sun_color[2] < 0 ) sun_color[2] = 0;
|
||||
else if ( sun_color[2] > 1) sun_color[2] = 1;
|
||||
if ( i_halo_color[2] < 0 ) i_halo_color[2] = 0;
|
||||
else if ( i_halo_color[2] > 1) i_halo_color[2] = 1;
|
||||
if ( o_halo_color[2] < 0 ) o_halo_color[2] = 0;
|
||||
else if ( o_halo_color[2] > 1) o_halo_color[2] = 1;
|
||||
if ( o_halo_color[3] < 0 ) o_halo_color[2] = 0;
|
||||
else if ( o_halo_color[3] > 1) o_halo_color[3] = 1;
|
||||
|
||||
|
||||
grGammaCorrectRGB( i_halo_color );
|
||||
grGammaCorrectRGB( o_halo_color );
|
||||
grGammaCorrectRGB( sun_color );
|
||||
|
||||
|
||||
float *ptr;
|
||||
ptr = sun_cl->get( 0 );
|
||||
sgCopyVec4( ptr, sun_color );
|
||||
ptr = ihalo_cl->get( 0 );
|
||||
sgCopyVec4( ptr, i_halo_color );
|
||||
ptr = ohalo_cl->get( 0 );
|
||||
sgCopyVec4( ptr, o_halo_color );
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool cGrSun::reposition( sgVec3 p, double angle, double rightAscension, double declination, double sun_dist )
|
||||
{
|
||||
sgMat4 T1, T2, GST, RA, DEC;
|
||||
sgVec3 axis;
|
||||
sgVec3 v;
|
||||
|
||||
sgMakeTransMat4( T1, p );
|
||||
sgSetVec3( axis, 0.0, 0.0, -1.0 );
|
||||
sgMakeRotMat4( GST, (float)angle, axis );
|
||||
sgSetVec3( axis, 0.0, 0.0, 1.0 );
|
||||
sgMakeRotMat4( RA, ((float)rightAscension * SGD_RADIANS_TO_DEGREES) - 90.0, axis );
|
||||
sgSetVec3( axis, 1.0, 0.0, 0.0 );
|
||||
sgMakeRotMat4( DEC, (float)declination * SGD_RADIANS_TO_DEGREES, axis );
|
||||
|
||||
sgSetVec3( v, 0.0, sun_dist, 0.0 );
|
||||
sgMakeTransMat4( T2, v );
|
||||
|
||||
sgMat4 TRANSFORM;
|
||||
sgCopyMat4( TRANSFORM, T1 );
|
||||
sgPreMultMat4( TRANSFORM, GST );
|
||||
sgPreMultMat4( TRANSFORM, RA );
|
||||
sgPreMultMat4( TRANSFORM, DEC );
|
||||
sgPreMultMat4( TRANSFORM, T2 );
|
||||
|
||||
sgCoord skypos;
|
||||
sgSetCoord( &skypos, TRANSFORM );
|
||||
|
||||
sun_transform->setTransform( &skypos );
|
||||
|
||||
if ( prev_sun_angle != sun_angle )
|
||||
{
|
||||
if ( sun_angle == 0 ) sun_angle = 0.1;
|
||||
const double r_earth_pole = 6356752.314;
|
||||
const double r_tropo_pole = 6356752.314 + 8000;
|
||||
const double epsilon_earth2 = 6.694380066E-3;
|
||||
const double epsilon_tropo2 = 9.170014946E-3;
|
||||
|
||||
double r_tropo = r_tropo_pole / sqrt ( 1 - ( epsilon_tropo2 * pow ( cos( 0.0 ), 2 )));
|
||||
double r_earth = r_earth_pole / sqrt ( 1 - ( epsilon_earth2 * pow ( cos( 0.0 ), 2 )));
|
||||
|
||||
double position_radius = r_earth;
|
||||
|
||||
double gamma = SG_PI - sun_angle;
|
||||
double sin_beta = ( position_radius * sin ( gamma ) ) / r_tropo;
|
||||
double alpha = SG_PI - gamma - asin( sin_beta );
|
||||
|
||||
path_distance = sqrt( pow( position_radius, 2 ) + pow( r_tropo, 2 )
|
||||
- ( 2 * position_radius * r_tropo * cos( alpha ) ));
|
||||
|
||||
double alt_half = sqrt( pow ( r_tropo, 2 ) + pow( path_distance / 2, 2 ) - r_tropo * path_distance * cos( asin( sin_beta )) ) - r_earth;
|
||||
|
||||
if ( alt_half < 0.0 ) alt_half = 0.0;
|
||||
|
||||
/*if ( env_node )
|
||||
{
|
||||
//env_node->setDoubleValue( "atmosphere/altitude-troposphere-top", r_tropo - r_earth );
|
||||
//env_node->setDoubleValue( "atmosphere/altitude-half-to-sun", alt_half );
|
||||
}*/
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
Loading…
Reference in a new issue