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Category Archives: Self-similarity
Fractal tiling of a sphere with octahedral two-colour symmetry
The octahedron can have a nice two-colour symmetry. We get it from putting two tetrahedrons together, making a stellated octahedron. It is an eight-pointed star and has already been discussed by Pacioli in his book “de divina proportione” in the … Continue reading
Posted in Fractals, Kaleidoscopes, Self-similarity, Tilings
Tagged color symmetry, fractal, kaleidoscope, octahedron, spherical tiling
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A variant of the Apollonian gasket with icosahedral symmetry
We modify the Apollonian gasket presented in the earlier post Apollonian gasket as a spherical fractal with tetrahedral symmetry. In an icosahedron, five triangles meet at their corners, which gives us a fivefold rotational symmetry. At the centers of the triangles … Continue reading
Posted in Kaleidoscopes, Self-similarity, Tilings
Tagged Apollonian gasket, fractal, icosahedral symmetry, spherical geometry, Tiling
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Color symmetry using the length scale of the inflated lattice
I have shown some images with 2-color symmetry upon rotation shown in “images of 10-fold rotational …“. But the fast color changes they hacked them into small pieces. We can get better images if we use a color changing function with … Continue reading
Self-similarity and color modification
The Penrose tiling is self-similar as many other quasi-periodic tilings. It matches a copy of itself inflated by the golden ratio τ=(1+√5)/2≅1.618, see “Penrose tiling tied up in ribbons“. Noting that our quasi-periodic designs of 5-fold symmetry are closely related to … Continue reading
Coloring the Julia set
The Julia set of a function f(z) in the complex plane has all points z that remain finite upon iterations of the function. In the last posts I have used expanding functions to get fractal images from iteration, as discussed … Continue reading
Posted in Fractals, Self-similarity, Uncategorized
Tagged fractal, Iterated function, iteration, julia set, Rotational symmetry, Self-similarity
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Rainbow colors
We can define a continuous number x of iterations needed to reach the critical radius R. Note that if the n-th iteration of f(z) equals R then x=n, and if the (n-1)th iteration equals R then x=n-1. For values in-between … Continue reading
Posted in Fractals, programming, Self-similarity
Tagged Color, fractal, fractal design, Rotational symmetry
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self-similar fractals with rotational symmetry from function iteration
I was looking at my posts of march 2013 on complex function iterations, see in particular “fractal surprise from complex function iteration” and “self-similar images from iterated mappings of the plane“, and I got some new ideas I want to … Continue reading
Posted in Fractals, Self-similarity
Tagged analysis, complex function, fractal, iteration, Rotational symmetry, Self-similarity
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repeated plane mapping, anamorphosis and mirrors
The image of the last post is quite bewildering. To get a calmer and simpler image I imposed mirror symmetries on the original image. A vertical mirror line results from taking the absolute value of the x-coordinate. Similarly, I take … Continue reading
Posted in Anamorphosis, Kaleidoscopes, Self-similarity
Tagged anamorphosis, kaleidoscope, Self-similarity, translational symmetry
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Self-similar designs from repeated plane mappings and anamorphosis
I am reconsidering ideas Pickover has presented in his book “Computers, Patterns, Chaos and Beauty”. My post “Fractal surprise from complex function iteration” discusses already some aspects. Complex numbers z=x+iy represent the (x,y)-plane and complex functions f(z) define a mapping … Continue reading
Posted in Anamorphosis, Self-similarity
Tagged anamorphosis, fractal, Self-similarity
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Self-similar images from iterated mappings of the plane
A mapping of the plane defines simply another point (u,v) in the plane as a function of the coordinates (x,y) of a point in the plane. The mapping is defined by the functions for the new coordinates u=f(x,y) and v=g(x,y). … Continue reading
