#include STL_STRING
SG_USING_STD(string);
+// #include <iostream>
+// SG_USING_STD(cout);
+// SG_USING_STD(endl);
+
/**
* A class layer to model a single cloud layer
* of the cloud layer. The elevation of the top of the layer is
* elevation_m + thickness_m.
* @param elevation_m the layer elevation in meters
+ * @param set_span defines whether it is allowed to adjust the span
*/
- void setElevation_m (float elevation_m);
+ void setElevation_m (float elevation_m, bool set_span = true);
/** get the layer thickness */
float getThickness_m () const;
* visibility.
*/
float getTransition_m () const;
+
/**
* set the transition layer size in meters
* @param transition_m the transition layer size in meters
/** get coverage type */
Coverage getCoverage () const;
+
/**
* set coverage type
* @param coverage the coverage type
*/
void setCoverage (Coverage coverage);
+ /**
+ * set the cloud movement direction
+ * @param dir the cloud movement direction
+ */
+ inline void setDirection(float dir) {
+ // cout << "cloud dir = " << dir << endl;
+ direction = dir;
+ }
+
+ /** get the cloud movement direction */
+ inline float getDirection() { return direction; }
+
+ /**
+ * set the cloud movement speed
+ * @param sp the cloud movement speed
+ */
+ inline void setSpeed(float sp) {
+ // cout << "cloud speed = " << sp << endl;
+ speed = sp;
+ }
+
+ /** get the cloud movement speed */
+ inline float getSpeed() { return speed; }
+
/** build the cloud object */
void rebuild();
* @param lat specifies a rotation about the new Y axis
* @param spin specifies a rotation about the new Z axis
* (and orients the sunrise/set effects)
+ * @param dt the time elapsed since the last call
*/
- bool reposition( sgVec3 p, sgVec3 up, double lon, double lat, double alt );
+ bool reposition( sgVec3 p, sgVec3 up, double lon, double lat, double alt,
+ double dt = 0.0 );
/** draw the cloud layer */
void draw();
float layer_transition;
Coverage layer_coverage;
float scale;
+ float speed;
+ float direction;
// for handling texture coordinates to simulate cloud movement
// from winds, and to simulate the clouds being tied to ground