Have you created a Spirograph as a child, or even later? If you don’t know what a Spirograph looks like, the picture below may refresh your memory.
Yes, Spirograph is one of those brands like Xerox that have lesser-known, technical names. Spirographs are essentially Hypotrochoids or Epitrochoids. Even with such such technical words, Spirographs can be fun, especially when you don’t have to draw with ball point pens on paper, and can do it instead on a PowerPoint slide!
You can create Spirograph in PowerPoint quite easily, but it takes time and effort. My friend Shyam Pillai, who is a PowerPoint programming guru stepped in and said I could create Spirographs so much faster programmatically using this code:
If you don’t know how to use macro snippets or scripts inside PowerPoint, look here to get started easily.
Sub CreateSpirograph() Dim oShp As Shape Dim I As Single Const ROTATION_INCREMENT = 5 'Rotation Increment Const ROTATION_MAX = 360 'Max rotation 'Select a shape on the slide and then run this Set oShp = ActiveWindow.Selection.ShapeRange(1) For I = ROTATION_INCREMENT To ROTATION_MAX Step ROTATION_INCREMENT With oShp.Duplicate .Rotation = I .Left = oShp.Left .Top = oShp.Top End With Next End Sub
Remember you need to have some shape selected before you run this code.
You can change the ROTATION_INCREMENT and ROTATION_MAX values to get different graphs for your Spirographs in PowerPoint.
Shyam Pillai was a Microsoft PowerPoint MVP.
His site has many VBA snippets, plus free and commercial PowerPoint add-ins.
Want to create Spirographs without the programming code? Look at our Spirographs in PowerPoint tutorial.
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