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Use these blocks to create objects that are added to the bodylist and jointlist of a Box2d database used by the Physics Activity. Objects are positioned by the turtle x,y and colored based on the current pen attributes. From left to right:
 
Use these blocks to create objects that are added to the bodylist and jointlist of a Box2d database used by the Physics Activity. Objects are positioned by the turtle x,y and colored based on the current pen attributes. From left to right:
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* density: set the object density (0 is light; 1 is heavy)
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* friction: set the object friction (0 is slippery; 1 is sticky)
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* bounciness: set the object restitution (0 is rigid; 1 is bouncy)
 
* start polygon: use the current turtle x,y position to specify the first vertex of a polygon
 
* start polygon: use the current turtle x,y position to specify the first vertex of a polygon
 
* add point: use the current turtle x,y position to add a vertex to a polygon
 
* add point: use the current turtle x,y position to add a vertex to a polygon
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* gear: add a gear object at the current turtle x,y position with the number of teeth as the argument
 
* gear: add a gear object at the current turtle x,y position with the number of teeth as the argument
 
* motor: add a motor at the current turtle x,y position (attached to the object at this position)
 
* motor: add a motor at the current turtle x,y position (attached to the object at this position)
* pin: add a pin at the current turtle x,y position (attached to the object at this position)
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* pin: add a pin at the current turtle x,y position (attached to the object at this position) to prevent movement
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* pen: add a pen at the current turtle x,y position (attached to the object at this position) to trace motion
 
* joint: add a joint between the object at the current turtle x,y position and the object at x, y
 
* joint: add a joint between the object at the current turtle x,y position and the object at x, y
* density: set the object density (0 is light; 1 is heavy)
  −
* friction: set the object friction (0 is slippery; 1 is sticky)
  −
* bounciness: set the object restitution (0 is rigid; 1 is bouncy)
   
* save as Physics project: save the current bodylist and jointlist as a Physics project in the Journal
 
* save as Physics project: save the current bodylist and jointlist as a Physics project in the Journal
 
'''Note:''' The current model is cleared whenever the Erase button is pressed or a Clean block is run.
 
'''Note:''' The current model is cleared whenever the Erase button is pressed or a Clean block is run.