jihan 3

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jihan barbara (Author)

WHAT IS IT?

This example sets up a box that can be placed anywhere in the world. It is one patch thick.

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;; declare a global variable, halfedge, to be used when the box center is at (0,0)

globals [halfedge]

;; setup procedure for case where point (0,0) is lower left corner of Box
;;note slider that sets the size of the box.

to setup-corner
;  ca                                              ;; clear everything
  ask patches[
    ;; if patches are between (0,0) to (3,edge)...
    if ( pxcor = 0 and pycor >= 0 and pycor <= edge )
      [set pcolor yellow]                                 ;; ... draws left edge in red
    ;; if patches are between (edge,0) to (edge,edge)...
    if ( pxcor = edge and pycor >= 0 and pycor <= edge )
      [set pcolor red]                                 ;; ... draws right edge in red
    ;; if patches are between (0,0) to (edge,0)...
    if ( pycor = 0 and pxcor >= 0 and pxcor <= edge )
      [set pcolor red]                                 ;; ... draws bottom edge in red
    ;; if patches are between (0,edge) to (edge,edge)...
    if ( pycor = edge and pxcor >= 0 and pxcor <= edge )
      [set pcolor red]                                 ;; ... draws upper edge in red
    ]
end 


;; setup procedure for case where point (0,0) is in the center of Box

to setup-center
  ;ca                                              ;; clear everything
  ;; set halfedge as edge divided by two. in case edge is an odd number,
  ;; halfedge get the integer value of the division.
  set halfedge int (edge / 2)
  ask patches[
    ;; if patches are between (-halfedge,-halfedge) to (-halfedge,halfedge)...
    if (pxcor = (- halfedge) and pycor >= (- halfedge) and pycor <= (0 + halfedge) )
      [set pcolor blue]                                ;; ... draws left edge in blue
    ;; if patches are between (halfedge,-halfedge) to (halfedge,halfedge)...
    if ( pxcor = (0 + halfedge) and pycor >= (- halfedge) and pycor <= (0 + halfedge) )
      [set pcolor blue]                                ;; ... draws right edge in blue
    ;; if patches are between (-halfedge,-halfedge) to (halfedge,-halfedge)...
    if ( pycor = (- halfedge) and pxcor >= (- halfedge) and pxcor <= (0 + halfedge) )
      [set pcolor blue]                                ;; ... draws bottom edge in blue
    ;; if patches are between (-halfedge,halfedge) to (halfedge,halfedge)...
    if ( pycor = (0 + halfedge) and pxcor >= (- halfedge) and pxcor <= (0 + halfedge) )
      [set pcolor blue]                                ;; ... draws upper edge in blue
    ]
end 


; *** NetLogo 4.0.4 Code Example Copyright Notice ***
;
; (C) 2004 Uri Wilensky.  This code may be freely copied, distributed,
; altered, or otherwise used by anyone for any legal purpose.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
; A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
; OWNERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;
; *** End of NetLogo 4.0.4 Code Example Copyright Notice ***

There is only one version of this model, created about 14 years ago by jihan barbara.

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