Bouncing Balls Example 3D
Model was written in NetLogo 3D 4.1pre7
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WHAT IS IT?
This is an example that displays many of the capabilities of NetLogo 3D.
HOW TO USE IT
The SETUP button creates BALL-COUNT balls poised above the "floor" of the world. GO releases the balls and "gravity" pulls them down. The balls will bounce until they lose momentum. If the COLOR-SPEED? switch is on the color of the ball will be scaled the speed it is moving. If the TAILS? switch is on the balls will leave a trace of the path they have taken.
Comments and Questions
Click to Run Model
breed [ balls ball ] balls-own [ z-vel x-vel y-vel ] turtles-own [ col ] to setup ca ask patches with [ pzcor = -7 ] [ set pcolor random-float 2 + 35 ] set-default-shape turtles "circle" create-balls ball-count [ set zcor 5 set z-vel random-float 2 - 1 set x-vel random-float 2 - 1 set y-vel random-float 2 - 1 set col color if tails? [ pd ] ] end to go ask balls [ let x xcor let y ycor let z zcor let speed sqrt( x-vel * x-vel + y-vel * y-vel + z-vel * z-vel ) ifelse tails? [ pd ] [ pu ] set z-vel z-vel + -0.05 ifelse (( z-vel > 0 ) and (( zcor + z-vel ) > 9 )) or (( z-vel < 0 ) and (( zcor + z-vel ) < -6 )) [ set z-vel z-vel * -0.8 set y-vel y-vel * 0.95 set x-vel x-vel * 0.95 ] [ set z zcor + z-vel ] ifelse (( x-vel > 0 ) and (( xcor + x-vel ) > 9 )) or (( x-vel < 0 ) and (( xcor + x-vel ) < -9 )) [ set x-vel x-vel * -0.8 set y-vel y-vel * 0.95 set z-vel z-vel * 0.95 ] [ set x xcor + x-vel ] ifelse (( y-vel > 0 ) and (( ycor + y-vel ) > 9 )) or (( y-vel < 0 ) and (( ycor + y-vel ) < -9 )) [ set y-vel y-vel * -0.8 set x-vel x-vel * 0.95 set z-vel z-vel * 0.95 ] [ set y ycor + y-vel ] setxyz x y z if color-speed? [ set color scale-color col speed -.5 1.5 ] ] tick end ; Copyright 2005 Uri Wilensky. This code may be freely copied, distributed, ; altered, or otherwise used by anyone for any legal purpose.
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Attached files
File | Type | Description | Last updated | |
---|---|---|---|---|
Bouncing Balls Example 3D.png | preview | Preview for 'Bouncing Balls Example 3D' | over 11 years ago, by Uri Wilensky | Download |
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