;; By James Steiner

globals
[ min-edge-length ;; if the edge length is less than this, the linked nodes are "decorated"
  max-edge-length
]

;; decora (singular decorum, like "data" and "datum") are turtles that decorate nodes when the link is too short
;; place first so that these turtles appear UNDER other turtles
;; make sure to define a shape "decorum" that has the appearance desired.
;; note that shapes scale proportionally, so "dumbbell" or other linear shapes may not perform as desired
breed [ decora decorum ]
decora-own [ my-edge ]

;; the other breeds for the netwrk
breed [ nodes node ]

undirected-link-breed [ edges edge ]
edges-own
[ my-decorum ;; used to track link decorations
  old-length ;; used to track change in link length over time
]


to startup setup end
to reset setup end

to setup
   ca
   set min-edge-length 2 
   ;; defines default shape for decora
   setup-decora
   ;; creates the network, including the decora
   setup-network 25
   ;; arranges the network for initial display  
   repeat 100 [ update-network-display ]
   update-decora-display
end

to go
   every .015
   [ ;; copy min-length from slider,
     ;; put in min-edge-length
     set min-edge-length min-length
     set max-edge-length min-length * 1.5
     update-network-display
     mouse:go
     ;; if any link stretches too far, it breadks
     ;; this means that the links of the dragged node may
     ;; not be the links that break.
     let stressed edges with [ link-length - old-length > 1  and link-length > max-edge-length ]
     if any? stressed
     [ ask stressed [ die ]
       ask decora with [ not is-turtle? my-edge ]
       [ die ]
     ]
     ;; if a node is dragged too close to another node, they link
     ;; not the reference to the proterties of the pointer
     if is-node? [ mouse-dragged ] of one-of pointers
     [  ask [ mouse-dragged ] of one-of pointers
        [ let close other nodes in-radius (min-edge-length * .5) with [ not edge-neighbor? myself] 
          ask close [ create-decorated-edge myself ]
        ]
     ]
     
     ;; always do this after all other display-changers are done
     ;; e.g. after mouse drag may have changed link length.
     update-decora-display
     tick
   ]
end   

to create-decorated-edge [ that-node ]
   let this-node self
   create-edge-with that-node
   [ set thickness .5
     set color white
     let this-edge self
     ;; only turtles can use hatch, so we'll
     ;; get the calling turtle to hatch
     ;; the decorum we need
     ask this-node
     [ hatch-decora 1
       [ ;; decorum keeps a reference to the edge it decorates
         set my-edge this-edge
         ;; decorum is initially hidden
         hide-turtle 
         ;; this updates the size and position of the decorum
         update-decorum-display
       ]
       
     ]
   ]
end
 
to set-node-color
   set color (who * 10 + 5) mod 139 
end   
to setup-network [ node-pop ]
   set-default-shape nodes "node"
   create-nodes node-pop
   [ 
     set-node-color     create-decorated-edge one-of other nodes 
     setxy random-xcor random-ycor
   ]
   update-network-display
 end

to update-network-display
   ask edges [ set old-length link-length ]
   layout-spring nodes edges pull min-length push
end

to setup-decora
   ;; defaine default shape for a decorum
   set-default-shape decora "decorum"
end

to update-decora-display
   ask decora [ update-decorum-display ]
end

to update-decorum-display
   ;; update the position, heading, and visibility of a decorum
   setxy [ edge-xcor ] of my-edge
         [ edge-ycor ] of my-edge
   ;; the sizing formula used depends on the look desired.
   ;; this formula makes the decorum fit around both end-points, with 
   ;; margin equal half to the larger endpoint size, and includes the length of the edge
   let edge-length [ link-length ] of my-edge
   
   set size [ link-length +  2 * max [ size ] of both-ends ] of my-edge
   ;; if the size of the link <= 0, then there is no heading, otherwise, get a heading
   set heading [ ifelse-value (link-length = 0) [ 0 ] [ link-heading ] ] of my-edge
     
   ;; hide or un-hide the decorum
   ifelse hidden? 
   [ if edge-length <= min-edge-length
     [ show-turtle ]
   ][ if edge-length > min-edge-length
     [ hide-turtle
     ]
   ]
end

to-report edge-xcor 
   report ( .5 * ( [ xcor ] of end1 + [ xcor ] of end2 ) )
end

to-report edge-ycor 
   report ( .5 * ( [ ycor ] of end1 + [ ycor ] of end2 ) )
end

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; MOUSE STUFF
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Mouse interface copyright 2009 James P. Steiner
;; You are free to use this interface code framwork in your own models
;; Please retain this copyright notice when you paste or include the code

;; the breed for the mouse pointer
;; defined last so pointer is on top of all other shapes
breed [ pointers pointer ]
pointers-own
[ mouse-dragged 
  mouse-hovered 
  mouse-hover-radius^2
  mouse-click-time
  mouse-outside?
  mouse-in-click?
  mouse-x mouse-y
]

to mouse:go
   if not any? pointers [ mouse:setup-pointer ]
   ask pointers
   [ ifelse mouse-inside?
     [ ;; mouse is inside 
       ;; -- get the coordinates
       set mouse-x mouse-xcor
       set mouse-y mouse-ycor
       ;; move the pointer
       setxy mouse-x mouse-y
       ;; did it just come inside?
       if mouse-outside? [ set mouse-outside? false mouse:do-go-inside ]
       ifelse mouse-down?
       [ ;; mouse is down
         ;; did it just go down?
         if not mouse-in-click? [ set mouse-in-click? true mouse:do-click-start ]
         ;; do continuous mouse-down stuff
         mouse:do-down
       ]
       [ ;; mouse is up
         ;; did it just come up?
         if mouse-in-click? [ set mouse-in-click? false mouse:do-click-end ]
         ;; do continuous mouse-up/hover stuff
         mouse:do-hover
       ]
     ]
     [ ;; mouse is outside
       ;; did it just come outside
       if not mouse-outside? [ set mouse-outside? true mouse:do-go-outside ]
       ;; do continuous mouse outside stuff
       mouse:do-outside 
     ]
   ]
end     

to mouse:do-go-inside 
   set mouse-outside? false
   ;; do anything special that happens only
   ;; when the mouse first returns inside.
   ;; usually this is empty--the regu
end

to mouse:do-click-start
   ;; stuff that happens when the mouse button first goes down.

   if is-turtle? mouse-hovered [ mouse:hover-drop ]
   if not is-node? mouse-dragged 
   [ if any? nodes
     [ set mouse-dragged min-one-of nodes with [ mouse:quick-distance myself < 4 ] [ mouse:quick-distance myself ]
     ]
   ]
end
to mouse:do-down
   ;; stuff that happens *while* the mouse button is down
   if is-node? mouse-dragged
   [ ask mouse-dragged [ setxy [ mouse-x ] of myself [ mouse-y ] of myself ]
   ]
end
to mouse:do-click-end debug-print "click-end"
   ;; stuff that happens when the mouse button comes back up
   set mouse-dragged nobody
end
to mouse:do-go-outside debug-print "go-outside"
   ;; stuff that happens when the mouse pointer first crosses outside the view edge
   set mouse-dragged nobody
   if is-turtle? mouse-hovered [ mouse:hover-drop ]
end

to mouse:do-outside
   ;; stuff that happens while the mouse is outside the view
   ;; such as hiding the pointer
   
   setxy (.9 * xcor + .1 * (1 * cos ( timer * 360))) (.9 * ycor + .1 * (1 * sin (timer * 360) ))
end

to mouse:do-hover 
   ifelse is-turtle? mouse-hovered 
   [ ifelse mouse:quick-distance mouse-hovered > mouse-hover-radius^2
     [ mouse:hover-drop
     ]
     [
     ]
   ]
   [  mouse:hover-pickup ]
end

to mouse:hover-pickup
   debug-print "get-hovered"
   let hoverable nodes with [ mouse:quick-distance myself < 9 ] 
   if any? hoverable
   [ set mouse-hovered max-one-of hoverable [ who ]
     ask mouse-hovered [ set color 9.9 set size 3]
     set mouse-hover-radius^2 9
     debug-print (word "(" mouse-hovered ")" )
   ]
end

to mouse:hover-drop
       debug-print "drop-hovered"
       ask mouse-hovered [ set-node-color set size 1]
       set mouse-hovered nobody
end

to-report mouse:quick-distance [ agent ]
   ;; reports the square of the distance
   ;; avoids the slow square root function
   ;; useful when simply looking for nearest
   ;; or comparing distance
   ;; or comparing to a known squared distance
   let xx [ xcor ] of agent - xcor
   let yy [ ycor ] of agent - ycor
   report (xx * xx + yy * yy)
end


to mouse:setup-pointer
   create-pointers 1
   [ set shape "pointer"
     set color white
     set size 7
     set heading 0
     set mouse-dragged nobody
     set mouse-in-click? false
     set mouse-outside? true
     set mouse-hovered nobody
   ]
end


          
to debug-print [ message ]
   ; output-print message
end   
@#$#@#$#@
GRAPHICS-WINDOW
180
10
553
404
16
16
11.0
1
10
1
1
1
0
0
0
1
-16
16
-16
16
1
1
1
ticks

CC-WINDOW
5
418
1012
513
Command Center
0

BUTTON
44
340
107
373
NIL
reset
NIL
1
T
OBSERVER
NIL
NIL
NIL
NIL

BUTTON
11
16
74
49
NIL
go
T
1
T
OBSERVER
NIL
NIL
NIL
NIL

SLIDER
101
168
134
318
min-length
min-length
0
10
5
.5
1
NIL
VERTICAL

TEXTBOX
11
58
161
156
nodes less than min-length distance apart are highlighted with a \"decorum\" turtle.\n\nUse mouse to drag nodes. Tug hard to break links, drag nodes close together to make links.
11
0.0
1

TEXTBOX
562
22
1003
40
...
11
0.0
1

SLIDER
17
168
50
318
pull
pull
0
1
0.85
.01
1
NIL
VERTICAL

SLIDER
59
168
92
318
push
push
0
1
0.86
.01
1
NIL
VERTICAL

TEXTBOX
84
16
178
50
Click \"go\" to activate model.
11
0.0
1

OUTPUT
558
41
798
404
12

@#$#@#$#@
WHAT IS IT?
-----------
A model to demonstrate a technique of applying turtles to decorate links, such as links that are under a specific length (or invisible, due to node overlap)

Also demonstrated:

A mouse hover/drag/drop interface for nodes -- this is a medium feature set.
The mouse driver is designed to be modular and easy to apply behaviours to the mouse actions. See  MOUSE:GO

A method of creating and breaking links by dragging the nodes.

The use of layout-spring to create dynamic network displays.

@#$#@#$#@
default
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airplane
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arrow
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box
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bug
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butterfly
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Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240
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Polygon -7500403 true true 162 150 200 105 245 90 275 90 290 105 290 135 275 180 260 195 215 195 162 165
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Line -16777216 false 150 105 105 60

car
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Circle -7500403 true true 195 195 58

circle
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Circle -7500403 true true 0 0 300

circle 2
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cow
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cylinder
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decorum
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decorum-bar
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dot
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face happy
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face neutral
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Circle -7500403 true true 8 7 285
Circle -16777216 true false 60 75 60
Circle -16777216 true false 180 75 60
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face sad
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Circle -7500403 true true 8 8 285
Circle -16777216 true false 60 75 60
Circle -16777216 true false 180 75 60
Polygon -16777216 true false 150 168 90 184 62 210 47 232 67 244 90 220 109 205 150 198 192 205 210 220 227 242 251 229 236 206 212 183

fish
false
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Polygon -1 true false 135 195 119 235 95 218 76 210 46 204 60 165
Polygon -1 true false 75 45 83 77 71 103 86 114 166 78 135 60
Polygon -7500403 true true 30 136 151 77 226 81 280 119 292 146 292 160 287 170 270 195 195 210 151 212 30 166
Circle -16777216 true false 215 106 30

flag
false
0
Rectangle -7500403 true true 60 15 75 300
Polygon -7500403 true true 90 150 270 90 90 30
Line -7500403 true 75 135 90 135
Line -7500403 true 75 45 90 45

flower
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Polygon -10899396 true false 135 120 165 165 180 210 180 240 150 300 165 300 195 240 195 195 165 135
Circle -7500403 true true 85 132 38
Circle -7500403 true true 130 147 38
Circle -7500403 true true 192 85 38
Circle -7500403 true true 85 40 38
Circle -7500403 true true 177 40 38
Circle -7500403 true true 177 132 38
Circle -7500403 true true 70 85 38
Circle -7500403 true true 130 25 38
Circle -7500403 true true 96 51 108
Circle -16777216 true false 113 68 74
Polygon -10899396 true false 189 233 219 188 249 173 279 188 234 218
Polygon -10899396 true false 180 255 150 210 105 210 75 240 135 240

house
false
0
Rectangle -7500403 true true 45 120 255 285
Rectangle -16777216 true false 120 210 180 285
Polygon -7500403 true true 15 120 150 15 285 120
Line -16777216 false 30 120 270 120

leaf
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0
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Polygon -7500403 true true 135 195 135 240 120 255 105 255 105 285 135 285 165 240 165 195

line
true
0
Line -7500403 true 150 0 150 300

line half
true
0
Line -7500403 true 150 0 150 150

node
true
7
Circle -16777216 true false -1 -1 301
Circle -14835848 true true 29 29 242

pentagon
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Polygon -7500403 true true 150 15 15 120 60 285 240 285 285 120

person
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Circle -7500403 true true 110 5 80
Polygon -7500403 true true 105 90 120 195 90 285 105 300 135 300 150 225 165 300 195 300 210 285 180 195 195 90
Rectangle -7500403 true true 127 79 172 94
Polygon -7500403 true true 195 90 240 150 225 180 165 105
Polygon -7500403 true true 105 90 60 150 75 180 135 105

plant
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Rectangle -7500403 true true 135 90 165 300
Polygon -7500403 true true 135 255 90 210 45 195 75 255 135 285
Polygon -7500403 true true 165 255 210 210 255 195 225 255 165 285
Polygon -7500403 true true 135 180 90 135 45 120 75 180 135 210
Polygon -7500403 true true 165 180 165 210 225 180 255 120 210 135
Polygon -7500403 true true 135 105 90 60 45 45 75 105 135 135
Polygon -7500403 true true 165 105 165 135 225 105 255 45 210 60
Polygon -7500403 true true 135 90 120 45 150 15 180 45 165 90

pointer
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square
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square 2
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star
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Polygon -7500403 true true 151 1 185 108 298 108 207 175 242 282 151 216 59 282 94 175 3 108 116 108

target
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0
Circle -7500403 true true 0 0 300
Circle -16777216 true false 30 30 240
Circle -7500403 true true 60 60 180
Circle -16777216 true false 90 90 120
Circle -7500403 true true 120 120 60

tree
false
0
Circle -7500403 true true 118 3 94
Rectangle -6459832 true false 120 195 180 300
Circle -7500403 true true 65 21 108
Circle -7500403 true true 116 41 127
Circle -7500403 true true 45 90 120
Circle -7500403 true true 104 74 152

triangle
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0
Polygon -7500403 true true 150 30 15 255 285 255

triangle 2
false
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Polygon -7500403 true true 150 30 15 255 285 255
Polygon -16777216 true false 151 99 225 223 75 224

truck
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Rectangle -7500403 true true 4 45 195 187
Polygon -7500403 true true 296 193 296 150 259 134 244 104 208 104 207 194
Rectangle -1 true false 195 60 195 105
Polygon -16777216 true false 238 112 252 141 219 141 218 112
Circle -16777216 true false 234 174 42
Rectangle -7500403 true true 181 185 214 194
Circle -16777216 true false 144 174 42
Circle -16777216 true false 24 174 42
Circle -7500403 false true 24 174 42
Circle -7500403 false true 144 174 42
Circle -7500403 false true 234 174 42

turtle
true
0
Polygon -10899396 true false 215 204 240 233 246 254 228 266 215 252 193 210
Polygon -10899396 true false 195 90 225 75 245 75 260 89 269 108 261 124 240 105 225 105 210 105
Polygon -10899396 true false 105 90 75 75 55 75 40 89 31 108 39 124 60 105 75 105 90 105
Polygon -10899396 true false 132 85 134 64 107 51 108 17 150 2 192 18 192 52 169 65 172 87
Polygon -10899396 true false 85 204 60 233 54 254 72 266 85 252 107 210
Polygon -7500403 true true 119 75 179 75 209 101 224 135 220 225 175 261 128 261 81 224 74 135 88 99

wheel
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0
Circle -7500403 true true 3 3 294
Circle -16777216 true false 30 30 240
Line -7500403 true 150 285 150 15
Line -7500403 true 15 150 285 150
Circle -7500403 true true 120 120 60
Line -7500403 true 216 40 79 269
Line -7500403 true 40 84 269 221
Line -7500403 true 40 216 269 79
Line -7500403 true 84 40 221 269

x
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Polygon -7500403 true true 270 75 225 30 30 225 75 270
Polygon -7500403 true true 30 75 75 30 270 225 225 270

@#$#@#$#@
NetLogo 4.0.4
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
default
0.0
-0.2 0 0.0 1.0
0.0 1 1.0 0.0
0.2 0 0.0 1.0
link direction
true
0
Line -7500403 true 150 150 90 180
Line -7500403 true 150 150 210 180

@#$#@#$#@