Skip to content

Latest commit

 

History

History
55 lines (45 loc) · 3.36 KB

README.md

File metadata and controls

55 lines (45 loc) · 3.36 KB
Raw

About

This is a multithreaded fractal viewer written in Java. It is relatively fast: depending on the viewed region, rendering a fractal in 800x800 takes between 100-600ms on 8 threads. Render times on 1 thread are slower.

Mandelbrot side-by-side, with save dialog Julia Fractal, with viridis palette

Features

  • Completely asynchronous, multithreaded architecture; the UI always stays responsive
  • Incremental panning and zooming in: the last render is scaled while zooming in; while panning, missing regions will be white until filled in by the renderer (asynchronously)
  • Saving fractals as an image
  • Multiple independent windows
  • (Continouos) Zooming, Panning
  • Many colormaps to choose from, scraped from matplotlib
    • Palette switching is decoupled from fractal computation, and is instant (10-20ms)
  • 3 supported fractals; adding more is relatively simple
    1. Mandelbrot
    2. Julia
    3. Sierpinski Triangle (with code adapted from XaoS)
  • Aspect ratio compensation: even when the window is non-square, the fractal won't be squished/stretched

Inputs and Keybindings

  • MouseWheelForward -> zoom in, MouseWheelBackward -> zoom out
  • Panning means shifting the viewport in whatever direction; this corresponds to moving the fractal in the opposite direction.
Keybinding Function
Left Click Zoom in at point
Right Click Zoom out at point
Ctrl+MouseWheel Zoom in/out at center continously
Alt+MouseWheel Zoom in/out at cursor continouosly
Shift+Drag+LMB1 Drag out a rectangle and zoom into it; (to draw a non-square, deselect View->Always Use Square Selection)
Ctrl+Shift+Drag+LMB Same as above, but always draw a square (stretched to aspect ratio)
(Ctrl)+Shift+Drag+RMB Create a new window with that area zoomed into
MouseWheelForward Pan upwards
MouseWheelBackward Pan downwards
Shift+MouseWheelForward Pan left
Shit+MouseWheelBackward Pan right

Technologies used

  • Java 8
  • Swing for GUI
  • maven for building
  • junit for some tests

Footnotes

  1. LMB/RMB refer to the button released at the end of the operation. ↩