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ID: 17642, Color Mandelbrot Fractal generator, Multi-threaded
UPDATED 3/27: Multithreaded Mandelbrot generator - now in color!
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For Delphi, Version 5.0
to 6.0
712 downloads
Copyright: Commercial use requires permission
Size: 250,783 bytes
Updated on Wed, 27 Mar 2002 19:45:27 GMT
Originally uploaded on Sun, 10 Mar 2002 13:38:36 GMT
SHA1 Hash: ED850CF753CC60F81930663A1B4C0532580FFF5B
MD5 Hash: C2A22F189A3DE5DE2CB1D1E07EAEEE7C
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| Description
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3/17/02: Now in color!
This is my mandelbrot drawing unit and demo app. It contains two classes: TmjwMandel, whose job is to contain the elements of the instance of the fractal being worked with along with some parameters controlling how the drawing will be done. Generally, a host app creates a single TmjwMandel for each Timage it wants to draw fractals into. The TmjwMandel creates TmjwMandelCalcThreads, which do the work of calculating the fractal itself.
Features include:
* Fast fractal generation
* As-threads-work progress updates
* Intelligent, Automatic zooming into the fractal
* Manual zooming
* Adjustable, unlimited number of concurrent threads
* Adjustable number of pieces to divide the image into for allocation to threads
* Interactive dwell-to-color mapping
* Beautiful color images!
Quick Usage notes:
* Click and drag in the image to zoom in manually
* Hold down the shift key to define a zoom box from the center point
* Use the < and > buttons to change the color mapping
* Press the Zoom button to have the app automatically choose a place to zoom into.
* You can change the number of active threads during drawing.
* Change the Split Factor to change how many blocks the initial image is broken up into.
* If there is a non-zero value in the Auto-zoom interval box when a fractal finishes drawing, the app will automatically zoom after that many seconds. Change it back to 0 to stop autozooming.
*Abort, Start, and Stop are self-explanatory.
The best views are achieved by maximizing the Mandelbrot Dispay window and using keyboard shortcuts to manipulate the image:
A: abort
S: Start
Z: zoom
, and .: change color mappings
R: reset to initial conditions
N: New Random Color base
G: greyscale image
C: Bring control window to the foreground to "c"hange settings
Have fun, and please let me know what you think!
Last update 3/27:
* Added more documentation
* Changed autozoom time property to units of Seconds instead of mSec
Contest entry forMultithreaded programming
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