Examples of edu.cmu.cs.stage3.alice.scenegraph.PointLight

Package edu.cmu.cs.stage3.alice.scenegraph

Examples of edu.cmu.cs.stage3.alice.scenegraph.PointLight

edu.cmu.cs.stage3.alice.authoringtool.event.AuthoringToolStateListener
a point light emits rays in all directions.
the position is inherent from absolute transformation of its container.
useful in simulating a light bulb.

when calculating a light's contribution to the illumination of a vertex, that light's color is multiplied a polynomial function of distance.
this polynomial is controllable via constant, linear, and quadratic attenuation properties.
```
 d = distance from light to vertex position c = constant attenuation l = linear attenuation q = quadratic attenuation 1 attenuation factor = ------------ c + ld + qdd 
```
note: the default values of ( constant=1, linear=0, quadratic=0 ) reduce the attenuation factor to 1. @author Dennis Cosgrove

      }
    }
  }


  protected void fireWorldStarted(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldStarted(ev);
      } catch (Throwable t) {

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      }
    }
  }


  protected void fireWorldStopped(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldStopped(ev);
      } catch (Throwable t) {

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      }
    }
  }


  protected void fireWorldPaused(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldPaused(ev);
      } catch (Throwable t) {

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      }
    }
  }


  protected void fireWorldSaved(edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(AuthoringToolStateChangedEvent.AUTHORING_STATE, AuthoringToolStateChangedEvent.AUTHORING_STATE, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldSaved(ev);
      } catch (Throwable t) {

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  }


  protected void fireWorldStarting(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldStarting(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to world starting.", t);
      }
    }
  }

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  }


  protected void fireWorldStopping(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldStopping(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to world stopping.", t);
      }
    }
  }

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  }


  protected void fireWorldPausing(int previousState, int currentState, edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldPausing(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to world pausing.", t);
      }
    }
  }

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  }


  protected void fireWorldSaving(edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(AuthoringToolStateChangedEvent.AUTHORING_STATE, AuthoringToolStateChangedEvent.AUTHORING_STATE, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldSaving(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to world saving.", t);
      }
    }
  }

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  }


  protected void fireStateChanged(int previousState, int currentState) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(previousState, currentState, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.stateChanged(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to authoring tool state changed.", t);
      }
    }
  }

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  }


  protected void fireWorldLoaded(edu.cmu.cs.stage3.alice.core.World world) {
    AuthoringToolStateChangedEvent ev = new AuthoringToolStateChangedEvent(AuthoringToolStateChangedEvent.AUTHORING_STATE, AuthoringToolStateChangedEvent.AUTHORING_STATE, world);
    for (java.util.Iterator iter = stateListeners.iterator(); iter.hasNext();) {
      AuthoringToolStateListener listener = (AuthoringToolStateListener) iter.next();
      try {
        listener.worldLoaded(ev);
      } catch (Throwable t) {
        AuthoringTool.showErrorDialog("Error in listener responding to world loaded.", t);
      }
    }
  }

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