Changeset 5103 for OpenSceneGraph/trunk/examples/osgprecipitation/osgprecipitation.cpp

Timestamp:

04/24/06 08:36:26 (7 years ago)

Author:

robert

Message:

Added support for wind.

Files:

• OpenSceneGraph/trunk/examples/osgprecipitation/osgprecipitation.cpp (modified) (4 diffs)

OpenSceneGraph/trunk/examples/osgprecipitation/osgprecipitation.cpp

@@ -16 +16 @@
 #include <osgProducer/Viewer>
 
+#include <osg/MatrixTransform>
+#include <osgUtil/TransformCallback>
 #include <osgParticle/PrecipitationEffect>
+
+class MyGustCallback : public osg::NodeCallback
+{
+
+    public:
+
+        MyGustCallback() {}
+
+        virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
+        {
+            osgParticle::PrecipitationEffect* pe = dynamic_cast<osgParticle::PrecipitationEffect*>(node);
+            
+            float value = sin(nv->getFrameStamp()->getReferenceTime());
+            if (value<-0.5) pe->getParameters()->wind.set(5.0,0.0,0.0);
+            else pe->getParameters()->wind.set(1.0,0.0,0.0);
+        
+            traverse(node, nv);
+        }
+};
 
 #if 0
@@ -120 +141 @@
     while (arguments.read("--particleColour", parameters.particleColour.r(), parameters.particleColour.g(), parameters.particleColour.b(), parameters.particleColour.a())) {}
 
-    osg::Vec3 particleVelocity;
-    while (arguments.read("--particleVelocity", particleVelocity.x(), particleVelocity.y(), particleVelocity.z() )) parameters.particleVelocity = particleVelocity;
+    osg::Vec3 wind;
+    while (arguments.read("--wind", wind.x(), wind.y(), wind.z())) parameters.wind = wind;
+    
+    while (arguments.read("--particleVelocity", parameters.particleVelocity)) {}
 
     while (arguments.read("--nearTransition", parameters.nearTransition )) {}
@@ -181 +204 @@
     }
     
-#if 1
-    
+    // precipitationEffect->setUpdateCallback(new MyGustCallback);
+
     osg::ref_ptr<osg::Group> group = new osg::Group;
     group->addChild(precipitationEffect.get());
@@ -189 +212 @@
     // set the scene to render
     viewer.setSceneData(group.get());
-
-#else    
-
-        loadedModel = createModel(loadedModel.get(), parameters);
-
-        // set the scene to render
-        viewer.setSceneData(loadedModel.get());
-#endif
 
     // create the windows and run the threads.