SG_USING_STD(string);
-#define SG_MAX_CLOUD_TYPES 4 // change this if we add/remove cloud
- // types en the enum below
-
-enum SGCloudType {
- SG_CLOUD_OVERCAST = 0,
- SG_CLOUD_MOSTLY_CLOUDY,
- SG_CLOUD_MOSTLY_SUNNY,
- SG_CLOUD_CIRRUS
-};
-
-
class SGCloudLayer {
-private:
+public:
- ssgRoot *layer_root;
- ssgTransform *layer_transform;
- ssgSimpleState *layer_state;
+ enum Type {
+ SG_CLOUD_OVERCAST = 0,
+ SG_CLOUD_MOSTLY_CLOUDY,
+ SG_CLOUD_MOSTLY_SUNNY,
+ SG_CLOUD_CIRRUS,
+ SG_CLOUD_CLEAR,
+ SG_MAX_CLOUD_TYPES
+ };
- ssgColourArray *cl;
- ssgVertexArray *vl;
- ssgTexCoordArray *tl;
+ // Constructors
+ SGCloudLayer( const string &tex_path );
- // height above sea level (meters)
- float layer_asl;
- float layer_thickness;
- float layer_transition;
- float size;
- float scale;
+ // Destructor
+ ~SGCloudLayer( void );
- // for handling texture coordinates to simulate cloud movement
- // from winds, and to simulate the clouds being tied to ground
- // position, not view position
- // double xoff, yoff;
- double last_lon, last_lat;
+ float getSpan_m () const;
+ void setSpan_m (float span_m);
-public:
+ float getElevation_m () const;
+ void setElevation_m (float elevation_m);
- // Constructor
- SGCloudLayer( void );
+ float getThickness_m () const;
+ void setThickness_m (float thickness_m);
- // Destructor
- ~SGCloudLayer( void );
+ float getTransition_m () const;
+ void setTransition_m (float transition_m);
+
+ Type getType () const;
+ void setType (Type type);
// build the cloud object
- void build( double size, double asl, double thickness,
- double transition, ssgSimpleState *state );
+ void rebuild();
// repaint the cloud colors based on current value of sun_angle,
// sky, and fog colors. This updates the color arrays for
// draw the cloud layer
void draw();
- inline float get_asl() const { return layer_asl; }
- inline float get_thickness() const { return layer_thickness; }
- inline float get_transition() const { return layer_transition; }
+private:
+
+ static ssgSimpleState *layer_states[SG_MAX_CLOUD_TYPES];
+ static int layer_sizes[SG_MAX_CLOUD_TYPES];
+
+ ssgRoot *layer_root;
+ ssgTransform *layer_transform;
+ ssgLeaf * layer;
+
+ ssgColourArray *cl;
+ ssgVertexArray *vl;
+ ssgTexCoordArray *tl;
+
+ // height above sea level (meters)
+ SGPath texture_path;
+ float layer_span;
+ float layer_asl;
+ float layer_thickness;
+ float layer_transition;
+ Type layer_type;
+ float scale;
+
+ // for handling texture coordinates to simulate cloud movement
+ // from winds, and to simulate the clouds being tied to ground
+ // position, not view position
+ // double xoff, yoff;
+ double last_lon, last_lat;
+
};