* Make your Spirograph ART, Remix to share it. * I may make a project/studio with my favourite pictures. 1) "Clear" button to clear the screen, then choose a background picture for your art. 2) Set options for a pattern to draw: 2a) Choose a Ring Number (96 or 105) and a Wheel Number. * See the Preview Pattern in the square * Some patterns are very dense, others mostly space. 2b) You can also set the Start Tooth and Wheel Hole. The Start Tooth lets you rotate a pattern - very useful for drawing multi-colour or multi-part patterns. 2c) Select a Draw Colour and Draw Size. (Draw Size is not available with a real spirograph) 3) Click the mouse to Draw, OR click the Draw Button to draw in the same position as the last draw. 4) Click the Save Button to save your Picture! * A reminder will tell you that you MUST "See inside" and Remix or Save Now to make the Save permanent! --------------------- - You can use the Hide and Show buttons or the keys <H> and <S> to Hide or Show the drawing controls. You can also move the mouse to the bottom right screen corner to see the "Show Controls" button. - After saving your picture (Save Button), you can Hide the drawing controls before using Remix or Save Now. The project will then start with the controls hidden. - You can Load previously Saved patterns. eg. try loading my pre-loaded pattern 2 "A Spirograph is a geometric drawing toy that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. It was developed by British engineer Denys Fisher and first sold in 1965." from: https://www.101computing.net/python-turtle-spirograph/ https://en.wikipedia.org/wiki/Spirograph https://en.wikipedia.org/wiki/Hypotrochoid for circle inside a circle https://en.wikipedia.org/wiki/Epitrochoid for circle outside a circle Code to rotate points around (0,0): https://en.wikipedia.org/wiki/Rotation_matrix Color picker colours from Microsoft Word 2004 via this project by @MinecraftRunner https://scratch.mit.edu/projects/84704670/
