// Written by Curtis Olson, started December 1997.
// SSG-ified by Curtis Olson, February 2000.
//
-// Copyright (C) 1997-2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1997-2000 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA 02111-1307, USA.
+// 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.
//
// $Id$
#define _SG_SKY_HXX
-#ifndef __cplusplus
+#ifndef __cplusplus
# error This library requires C++
-#endif
-
-
-#include <plib/ssg.h> // plib include
+#endif
#include <simgear/compiler.h>
#include <simgear/misc/sg_path.hxx>
+#include <simgear/props/props.hxx>
#include <vector>
-#include <simgear/sky/cloud.hxx>
-#include <simgear/sky/dome.hxx>
-#include <simgear/sky/moon.hxx>
-#include <simgear/sky/oursun.hxx>
-#include <simgear/sky/stars.hxx>
-
-SG_USING_STD(vector);
-
-
-typedef vector < SGCloudLayer* > layer_list_type;
-typedef layer_list_type::iterator layer_list_iterator;
-typedef layer_list_type::const_iterator layer_list_const_iterator;
+#include <osg/ref_ptr>
+#include <osg/MatrixTransform>
+#include <osg/Node>
+#include <osg/Switch>
+
+#include <simgear/ephemeris/ephemeris.hxx>
+#include <simgear/math/SGMath.hxx>
+
+#include <simgear/scene/sky/cloud.hxx>
+#include <simgear/scene/sky/dome.hxx>
+#include <simgear/scene/sky/moon.hxx>
+#include <simgear/scene/sky/oursun.hxx>
+#include <simgear/scene/sky/stars.hxx>
+
+using std::vector;
+
+
+typedef struct {
+ SGVec3d pos;
+ SGGeod pos_geod;
+ SGQuatd ori;
+ double spin;
+ double gst;
+ double sun_dist;
+ double moon_dist;
+ double sun_angle;
+} SGSkyState;
+
+typedef struct {
+ SGVec3f sky_color;
+ SGVec3f adj_sky_color;
+ SGVec3f fog_color;
+ SGVec3f cloud_color;
+ double sun_angle, moon_angle;
+} SGSkyColor;
/**
* A class to model a realistic (time/date/position) based sky.
* texture_path() method.
* The arguments you pass to the build() method allow you to specify
- * the size of your sun sphere and moon sphere, a number of planets,
- * and a multitude of stars. For the planets and stars you pass in an
- * array of right ascensions, declinations, magnitudes, and the
- * distance from the view point.
+ * the horizontal and vertical radiuses of the sky dome, the size of
+ * your sun sphere and moon sphere, a number of planets, and a
+ * multitude of stars. For the planets and stars you pass in an array
+ * of right ascensions, declinations, and magnitudes.
* Cloud Layers
* Rendering the Sky
- * The sky is designed to be rendered in two stages. The first stage
+ * The sky is designed to be rendered in three stages. The first stage
* renders the parts that form your back drop - the sky dome, the
* stars and planets, the sun, and the moon. These should be rendered
* before the rest of your scene by calling the preDraw() method. The
- * second stage renders the clouds which are likely to be translucent
- * (depending on type) and should be drawn after your scene has been
- * rendered. Use the postDraw() method to draw the second stage of
- * the sky.
+ * second stage renders the clouds that are above the viewer. This stage
+ * is done before translucent objects in the main scene are drawn. It
+ * is seperated from the preDraw routine to enable to implement a
+ * multi passes technique and is located in the drawUpperClouds() method.
+ * The third stage renders the clouds that are below the viewer an which
+ * are likely to be translucent (depending on type) and should be drawn
+ * after your scene has been rendered. Use the drawLowerClouds() method
+ * to draw the second stage of the sky.
* A typical application might do the following:
- * <li> thesky->preDraw();
+ * <li> thesky->preDraw( my_altitude );
+ * <li> thesky->drawUpperClouds();
* <li> ssgCullAndDraw ( myscene ) ;
- * <li> thesky->postDraw( my_altitude );
+ * <li> thesky->drawLowerClouds();
- * The current altitude in meters is passed to the postDraw() method
+ * The current altitude in meters is passed to the preDraw() method
* so the clouds layers can be rendered correction from most distant
* to closest.
class SGSky {
private:
+ typedef std::vector<SGSharedPtr<SGCloudLayer> > layer_list_type;
+ typedef layer_list_type::iterator layer_list_iterator;
+ typedef layer_list_type::const_iterator layer_list_const_iterator;
// components of the sky
- SGSkyDome *dome;
- SGSun *oursun;
- SGMoon *moon;
- SGStars *planets;
- SGStars *stars;
+ SGSharedPtr<SGSkyDome> dome;
+ SGSharedPtr<SGSun> oursun;
+ SGSharedPtr<SGMoon> moon;
+ SGSharedPtr<SGStars> planets;
+ SGSharedPtr<SGStars> stars;
layer_list_type cloud_layers;
- ssgRoot *pre_root, *post_root;
+ osg::ref_ptr<osg::Group> pre_root, cloud_root;
+ osg::ref_ptr<osg::Switch> pre_selector;
+ osg::ref_ptr<osg::Group> pre_transform;
- ssgSelector *pre_selector, *post_selector;
- ssgTransform *pre_transform, *post_transform;
+ osg::ref_ptr<osg::MatrixTransform> _ephTransform;
SGPath tex_path;
float visibility;
float effective_visibility;
+ int in_cloud;
+ int cur_layer_pos;
+
// near cloud visibility state variables
bool in_puff;
double puff_length; // in seconds
double ramp_up; // in seconds
double ramp_down; // in seconds
+ // 3D clouds enabled
+ bool clouds_3d_enabled;
+
+ // 3D cloud density
+ double clouds_3d_density;
+
public:
/** Constructor */
* Initialize the sky and connect the components to the scene
* graph at the provided branch. See discussion in detailed class
* description.
+ * @param h_radius_m horizontal radius of sky dome
+ * @param v_radius_m vertical radius of sky dome
* @param sun_size size of sun
* @param moon_size size of moon
* @param nplanets number of planets
* @param planet_data an array of planet right ascensions, declinations,
* and magnitudes
- * @param planet_dist distance from viewer to put the planets
* @param nstars number of stars
* @param star_data an array of star right ascensions, declinations,
* and magnitudes
- * @param star_dist distance from viewer to put the stars */
- void build( double sun_size, double moon_size,
- int nplanets, sgdVec3 *planet_data, double planet_dist,
- int nstars, sgdVec3 *star_data, double star_dist );
+ */
+ void build( double h_radius_m, double v_radius_m,
+ double sun_size, double moon_size,
+ const SGEphemeris& eph, SGPropertyNode *property_tree_node );
/**
* Repaint the sky components based on current value of sun_angle,
* @param star_data an array of star right ascensions, declinations,
* and magnitudes
*/
- bool repaint( sgVec4 sky_color, sgVec4 fog_color, sgVec4 cloud_color,
- double sun_angle, double moon_angle,
- int nplanets, sgdVec3 *planet_data,
- int nstars, sgdVec3 *star_data );
+ bool repaint( const SGSkyColor &sc, const SGEphemeris& eph );
/**
* Reposition the sky at the specified origin and orientation
* @param moon_dec the moon's current declination
* @param moon_dist the moon's distance from the current view point.
*/
- bool reposition( sgVec3 view_pos, sgVec3 zero_elev, sgVec3 view_up,
- double lon, double lat, double alt, double spin,
- double gst,
- double sun_ra, double sun_dec, double sun_dist,
- double moon_ra, double moon_dec, double moon_dist );
+ bool reposition( const SGSkyState &st, const SGEphemeris& eph, double dt = 0.0 );
/**
* Modify the given visibility based on cloud layers, thickness,
*/
void modify_vis( float alt, float time_factor );
- /**
- * Draw background portions of the sky ... do this before you draw
- * the rest of your scene. See discussion in detailed
- * class description.
- */
- void preDraw();
-
- /**
- * Draw translucent clouds ... do this after you've drawn all the
- * oapaque elements of your scene. See discussion in detailed
- * class description.
- * @param alt current altitude
- */
- void postDraw( float alt );
+ osg::Node* getPreRoot() { return pre_root.get(); }
+ osg::Node* getCloudRoot() { return cloud_root.get(); }
/**
* Specify the texture path (optional, defaults to current directory)
* @param path base path to texture locations
*/
- inline void texture_path( const string& path ) {
- tex_path = SGPath( path );
- }
+ void texture_path( const string& path );
/** Enable drawing of the sky. */
inline void enable() {
- pre_selector->select( 1 );
- post_selector->select( 1 );
+ pre_selector->setValue(0, 1);
}
/**
* there, how ever it won't be traversed on by ssgCullandRender()
*/
inline void disable() {
- pre_selector->select( 0 );
- post_selector->select( 0 );
+ pre_selector->setValue(0, 0);
}
-
/**
* Get the current sun color
*/
- inline float *get_sun_color() { return oursun->get_color(); }
+ inline SGVec4f get_sun_color() { return oursun->get_color(); }
+ /**
+ * Get the current scene color
+ */
+ inline SGVec4f get_scene_color() { return oursun->get_scene_color(); }
/**
* Add a cloud layer.
* @param v visibility in meters
*/
inline void set_visibility( float v ) {
- effective_visibility = visibility = v;
+ effective_visibility = visibility = (v <= 25.0) ? 25.0 : v;
}
+
+ /** Get 3D cloud density */
+ virtual double get_3dCloudDensity() const;
+
+ /** Set 3D cloud density
+ * @param density 3D cloud density
+ */
+ virtual void set_3dCloudDensity(double density);
+
+ /** Get 3D cloud visibility range*/
+ virtual float get_3dCloudVisRange() const;
+
+ /** Set 3D cloud visibility range
+ * @param density 3D cloud visibility range
+ */
+ virtual void set_3dCloudVisRange(float vis);
+
};
projects / simgear.git / blobdiff