Changeset 8269

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Timestamp:
05/01/08 00:47:48
Author:
robert
Message:

Implement callback exercises

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  • OpenSceneGraph-TrainingMaterials/trunk/Sources/Exercises/10_callbacks/10a_UpdateCallbacks/10a_UpdateCallbacks.cpp

    r8117 r8269  
    66int main( int argc, char **argv ) 
    77{ 
    8     std::cout<<"TODO "<<argv[0]<<std::endl; 
     8    // This exercise fleshes out how one  
     9    // can use Update NodeCallbacks 
     10    // 
     11    // 1. Load cow.osg and then decorate 
     12    //    the model with a PositionAttitudeTransform 
     13    //    pass this to the viewer. 
     14    // 
     15    // 2. Implement a custom NodeCallback 
     16    //    that updates the position of the PositionAttitudeTransform 
     17    //    on each frame according to a sin range so the cow 
     18    //    "elegantly" bounces up and down. 
    919     
    1020    return 0; 

  • OpenSceneGraph-TrainingMaterials/trunk/Sources/Exercises/10_callbacks/10b_EventCallbacks/10b_EventCallbacks.cpp

    r8117 r8269  
    66int main( int argc, char **argv ) 
    77{ 
    8     std::cout<<"TODO "<<argv[0]<<std::endl; 
     8    // This exercise fleshes out how one  
     9    // can use Event NodeCallbacks/EventHandlers 
     10    // 
     11    // 1. Load spaceship.osg and then decorate 
     12    //    the model with a PositionAttitudeTransform 
     13    //    pass this to the viewer. 
     14    // 
     15    // 2. Implement a custom EventHandler/NodeCallback and attach 
     16    //    to the top most node of the model and have 
     17    //    the handler catch all < events and rotate the model clockwise 
     18    //    by 45 degrees, and > events rotate the model anti clockwise 
     19    //    both about the z axis. 
    920     
    1021    return 0; 

  • OpenSceneGraph-TrainingMaterials/trunk/Sources/Exercises/10_callbacks/10c_CullCallbacks/10c_CullCallbacks.cpp

    r8117 r8269  
    66int main( int argc, char **argv ) 
    77{ 
    8     std::cout<<"TODO "<<argv[0]<<std::endl; 
     8    // This exercise will explore the use 
     9    // of node cull callbacks. 
     10     
     11    // 1. Load the osgcool.osg model use a cull callback 
     12    //    to control the traversal of a subgraph 
     13    //    culling so that it only appears on alternately  
     14    //    50 frames on, 50 frames off. 
     15    // 
     16    // 2. Modify your cull callback so that it computes 
     17    //    the distance from the eye point so when further  
     18    //    away than two bounding sphere radius it implement  
     19    //    the 50/50 alternatiion frame, but at less make 
     20    //    model on all the time. 
    921     
    1022    return 0;