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How do I create this file in AI?

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If you want a copy, buy it. It's obviously not yours, so to use it legally you must buy it even in the case you draw the copy by yourself.

If you want lines and dots, you can draw them manually. Draw separate line segments. Dots appear, when you select your strokes have round markers at both ends.

There's a comment of Delaunay triangulation. That is a mathematically derived method to create a large number of triangles between the points in a cloud of points. It needs additional software, Ai doesn't make it alone. If you have less than 100 triangles, you probably can draw the needed lines.

An example:

enter image description here

In the left some lines are drawn. Everyone has the same stroke width and a round arrowhead in the beginning. Drawing is easy when you have a grid to snap or you have smart guides and snap to points ON.

In the left all is selected, Object > Expand Appearance is applied and all is Ungrouped few times. Then some strokes are selected and changed to thinner.

  • i want know its Technic. so what is teh name of additional software – Hashem Azadegan Jan 2 at 12:24
  • @HashemAzadegan Unfortunately I do not know well enough what is for sale. Search for Triangulation. This old case has also something useful. graphicdesign.stackexchange.com/questions/116727/… In the past there was Scriptographer add-on for Illustrator, but it does not work with Illustrator CC. – user287001 Jan 2 at 12:43
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The design isn't too complicated, and could simply be drawn by hand in Illustrator. However if you want to automate it, I'm not sure if there is a plug in you might be able to get for Delaunay Triangulation, as mentioned by others.

Failing that, Inkscape has a Voronoi Diagram extension (installed by default). It has a Delaunay Triangulation function. See example below:

All you do is draw some dots, select them, run the Voronoi Diagram Extension, choose the type as "Delauney Triangulation", preview, apply, then delete any extra lines you don't need.

enter image description here

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    Well I have made a script for lllustrator you can find it here – joojaa Jan 2 at 12:59
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    Excellent! @joojaa – Billy Kerr Jan 2 at 13:00

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