Preparing fractal renderer

Fractal Photo Tiler Mapping Lab

Bitmap mapping over Mandelbrot and Julia escape bands. The image follows the escaped orbit — not the screen coordinates — so it repeats with the fractal’s own dynamics.

This demo needs WebGL 2.
Drag to pan · mouse wheel to zoom at the pointerStarting…

Fractal

Bitmap pair

Main texture preview
Cap texture preview

The cap is used only by the first visible escape band. The main image covers all later bands. For seamless results, author a 2:1 or 4:1 texture whose bottom is half the scale of its top.

Mapping equation

zₙ₊₁ = zₙ² + c

u = fract(atan2(z.y, z.x) / 2π + phase + rotation)

v = clamp(2 × (ln(400) − ln|z|) / ln(400), 0, 1)

iter = min  → Cap texture
iter > min  → Main texture

u wraps horizontally around the escaping orbit. v uses logarithmic escape overshoot. The period-doubling of z² produces the nested image structure.