Input image:

Showing:

Projection:

Projection:

Projection:

Generating Elements:

Generating Elements:

Number of elements:

Basic triangle (heavy lines)
Rotational symmetries at intersection between:

straight lines
circle and upper line
circle and lower line

sum of angles =

Center circle: (medium line)
Rotational symmetries at intersection with

basic circle
upper line
lower line

Center circle: (medium line)
Size:
Rotational symmetries at intersection with

upper line
lower line

Inner circle: (light line)
Rotational symmetries at intersection with

center circle
upper line
lower line

Output image:

Output image size: