Transparency Example

Transparency Example preview image

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Uri_dolphin3 Uri Wilensky (Author)

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Visible to everyone | Changeable by everyone
Model was written in NetLogo 5.0.4 • Viewed 319 times • Downloaded 17 times • Run 0 times
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Click to Run Model

to setup
  clear-all
  create-turtles 1000 [
    setxy random-xcor random-ycor
    set color one-of [green blue]
  ]
  ;; make some clusters of turtles among the evenly distributed turtles as
  ;; it shows off the transparency better
  ask n-of 10 patches [
    sprout 100 [
      setxy (xcor + random-float 5) (ycor + random-float 5)
      set color green
    ]
  ]
end 

to set-transparency
  ;; since turtle colors might be either numbers (NetLogo colors) or lists
  ;; (RGB or RGBA colors) make sure to handle both cases when changing the
  ;; transparency
  ifelse is-list? color
  ;; list might either have 3 or 4 member since RGB and RGBA colors
  ;; are allowed, so you can't just replace or add an item at the
  ;; end of the list.  So, we take the first 3 elements of the list
  ;; and add the alpha to the end
  [ set color lput transparency sublist color 0 3 ]
  ;; to get the RGB equivalent of a NetLogo color we
  ;; use EXTRACT-RGB and then add alpha to the end
  [ set color lput transparency extract-rgb color ]
end 


; Public Domain:
; To the extent possible under law, Uri Wilensky has waived all
; copyright and related or neighboring rights to this model.

There are 8 versions of this model.

Uploaded by When Description Download
Uri Wilensky over 6 years ago Updated to NetLogo 5.0.4 Download this version
Uri Wilensky almost 7 years ago Updated version tag Download this version
Uri Wilensky almost 8 years ago Updated to NetLogo 5.0 Download this version
Uri Wilensky over 9 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky over 9 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky over 9 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky over 9 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky over 9 years ago Model from NetLogo distribution Download this version

Attached files

File Type Description Last updated
Transparency Example.png preview Preview for 'Transparency Example' over 6 years ago, by Uri Wilensky Download

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