What is it ? :

This transform produce patterns formed with intricated polygonal rings. The idea is the same as in Intricated Rings. Some well known islamic patterns can be reproduced.
 

The Parameters :

Ring Type : Choose the shape of the rings and, in the case of square rings, the way they are linked.

Mode :
Intricated : The rings looks as if they were linked together.
Mask / Inverse Mask : The transform works like a scissor, assigning solid color either to the rings or to the background.
Tiling In / Out : It produce a tiling derived from the ring pattern.

Ring Size / Width / Rotation : Be careful with these parameter, if the rings are too big or too thick, some strange things may occur.

Mapping Center / Rotation / Magnification : Allow you to choose which part of the underlying image will be mapped.

Mask : When enabled, the rings won't cover the whole plane anymore, but will be confined in a region called the mask. It can be useful if you don't want the rings to get out of the screen (see the example).

Mask Polygon Order / Center / Rotation / Size : To determine the mask. "Mask Polygon Order" define the polygon (3 for a triangle, 4 for a square, etc...). It has no effect with the Circle.

Stabilize ? : The images mapped on the rings have all the same direction. It has an effect only with the "intricated" mode and with triangular rings.
 

Remark : To get real looking rings, use the intricated mode together with the "Polygonal Gradient" coloring in sam.ucl (on a "pixel" formula). The order parameter of the transform and the coloring must match (see the example).
 

Example :

polyringstest
 

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