... the spirograph looking patterns that are sometimes used on the borders of certificates and sometimes also on money?
Can be a border, or a frame (I like the former better). If it is just in a corner, it may be called a "corner flourish."
Certificate Border is the name of the design. Different clip art and other resources may have assigned their own names to the patterns such as 'gold foil elegant' or 'simple green' borders.
Yeah, good point. I thought @Wreybies wanted to know what the border elements were called in general, but if he wants to know what the spiral pattern itself is...well, I suppose it could very well be an interpolation function for a Bézier function. Not sure how to check that (the math is beyond me). Although, looking back, the corner elements don't look like it to me.
Bézier curve's are used in most imagine programs for a variety of reasons. Unless your character is a graphic designer or a mathematician I would suggest refraining from using that term.
This issue doesn't arise for my characters. However, I'm neither a mathematician nor a graphic designer and I know what a Bézier curve is. I suppose it is up to an author whether a character knows it, but anyone might.
I thought it was quite common. and the word curve can help describe what it is to those who need to look it up.
I thought this was a technique rather than a design, and I think they are wrong see as quoted on wiki. Printed: on bank notes, currency or certificates, etc., to protect against forged copies . The pattern used in this instance is called a spirograph in mathematics, that is, a hypotrochoid generated by a fixed point on a circle rolling inside a fixed circle. It has parametric equations. These patterns bear a strong resemblance to the designs produced on the Spirograph , a children's toy. ???? how is that relevant wiki editors??? I always think of guilloche enameled eggs by a certain famous company.
