Participant

Question

transform fibonacci sequence script to add scaling

Forum|Forum|7 years ago
May 24, 2018
3 replies
1904 views

Hello,

I found this great script for taking an object and creating a fibonacci sequence (sunflower pattern).. it works great.

But you may notice that sunflower get bigger as they move from the inside out, so I would like to adjust the script to accommodate that.

here is the original script that works perfect for making the pattern.

var docSel=app.activeDocument;

var docSelSel=app.activeDocument.selection[0];

for (var i=1; i<1200;i++)

{

var r=10*Math.sqrt(i);

var t=137.5*Math.PI/180*i;

var newSel=docSelSel.duplicate(docSelSel);

newSel.translate(r*Math.cos(t),r*Math.sin(t));

}

docSelSel.remove();

here is my failed attempt to create scaling

var docSel=app.activeDocument;

var docSelSel=app.activeDocument.selection[0];

for (var i=1; i<1200;i++)

{

var r=10*Math.sqrt(i);

var t=137.5*Math.PI/180*i;

var f = ( 2 / newSel.width ) * 100;

var newSel=docSelSel.duplicate(docSelSel);

newSel.translate(r*Math.cos(t),r*Math.sin(t));

newSel.resize( f,f,true,true,true,true,f,Transformation.DOCUMENTORIGIN );

}

docSelSel.remove();

This topic has been closed for replies.

femkeblanco

Legend

Here's a quick attempt to put the variables into an interface.

var doc = app.activeDocument;
var ABR = doc.artboards[0].artboardRect;

function draw1(number, size, angle, radius) {
    try {
        doc.groupItems["temporary"].remove();
    } catch(e) {}
    var group = doc.groupItems.add();
    group.name = "temporary";
    for (var i = 0; i < number; i++) {
        var r = radius * Math.sqrt(i);
        var a = angle * Math.PI / 180 * i;
        var x = (ABR[2] - ABR[0]) / 2 - r * Math.cos(a) - size / 2;
        var y = (ABR[3] - ABR[1]) / 2 + r * Math.sin(a) + size / 2;
        var item = doc.pathItems.ellipse(y, x, size, size);
        item.moveToEnd(group);
    }
}

var G = function (w, name, up, text, down, dx) {
    var group = w.add("group");
        group.orientation = "column";
    this.static = group.add("statictext", undefined, name);
    this.static.justify = "center";
    this.b1 = group.add("button", undefined, "↑");
    var x = this.edit = group.add("edittext", undefined, text);
    x.preferredSize.width = this.static.preferredSize.width = 40;
    this.b2 = group.add("button", undefined, "↓");
    this.b2.preferredSize.width = this.b1.preferredSize.width = 40;
    this.b1.onClick = function () {
        x.text = +x.text + dx;
        draw2();
    }
    this.b2.onClick = function () {
        x.text = +x.text - dx;
        draw2();
    }
}

var w = new Window("dialog", "Fermat spiral");
    w.orientation = "row";
var g1 = new G(w, "Number", "↑", "100", "↓", 10);
w.add("panel").alignment = "fill";
var g2 = new G(w, "Size", "↑", "5", "↓", 1);
w.add("panel").alignment = "fill";
var g3 = new G(w, "Angle", "↑", "137.5", "↓", 0.1);
w.add("panel").alignment = "fill";
var g4 = new G(w, "Radius", "↑", "5", "↓", 1);
draw2();
w.show();

function draw2 () {
    draw1(g1.edit.text, g2.edit.text, g3.edit.text, g4.edit.text);
    redraw();
}

Mylenium

Legend

The iteration are just in the for() loop where instead of the fixed 1200 you insert the variable and similarly the radius is just a modification to the r variable where the extra spacing is added linearly. If I don't forget I might check it tomorrow back at the computer.

Mylenium

renél80416020

Inspiring

Bonjour,

adjust the script to accommodate that. ?

Je ne suis pas certain d'avoir bien compris.

// JavaScript Document for Illustrator
var docSel=app.activeDocument;
var rapH = 0.20;
var rapV = 0.20
var propDiff = (rapH+rapV)/2;
var T = Transformation.CENTER;
var docSel = activeDocument;
var docSelSel =docSel.selection[0];
var newGroup = docSel.groupItems.add();
    newGroup.name = "fibonacci";
var r, t, newSel;
for (var i=1; i<120;i++) {
        r=10*Math.sqrt(i);
        t=137.5*Math.PI/180*i;
        newSel=docSelSel.duplicate(newGroup);
        newSel.translate(r*Math.cos(t),r*Math.sin(t));
}
newGroup.resize(rapH*100,rapV*100,true,true,true,undefined,propDiff*100,T);
docSelSel.remove();

J

Justin_BlAuthor

Participant

Hello,

Thank you for responding. This script isn't working. The fibonacci sequence still works,. but all the objects are identical in size

here is how the original looked as well as yours..

this is how I would like it to look (notice how the objects are smaller close to the centre)

renél80416020

Inspiring

Oui j'ai maintenant compris...

Une proposition, échanger lignes 15 16, 17 18

// JavaScript Document for Illustrator
var docSel = activeDocument;
    docSel.rulerOrigin = [0,0];
var docSelSel = docSel.selection[0];
var c1 = centreObj(docSelSel);
    docSel.rulerOrigin = c1;
var newGroup = docSel.groupItems.add();
    newGroup.name = "fibonacci";
var r, t, f, l, newSel;
    l = docSelSel.width+docSelSel.width*2;;
  for (var i=1; i<1200;i++) {
    r = 13*Math.sqrt(i); //10 12
    t = 137.5*Math.PI/180*i;
    newSel=docSelSel.duplicate(newGroup);
    f = ((l/newSel.width )+100+Math.sqrt(i)*1.2) ;
    f = 100+Math.sqrt(i)*1.2;
    newSel.resize( f-Math.sqrt(i),f-Math.sqrt(i),true,true,true,undefined,f,Transformation.CENTER );
    //newSel.resize( f,f,true,true,true,undefined,f,Transformation.CENTER );
    newSel.translate(r*Math.cos(t),r*Math.sin(t));
    newSel.resize( f,f,true,true,true,undefined,f,Transformation.DOCUMENTORIGIN );
    l = newSel.width;
  }
docSelSel.remove();
//----------------
function centreObj(objet) {
  var rect = objet.geometricBounds;
  return [(rect[2]+rect[0])/2,(rect[1]+rect[3])/2];
}

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded