Draws the Mandelbrot set. Supports click to change orgin, drag to zoom in, and mouse wheel zoom in and out about a point. The user can hold the shift key down while dragging the window borders to suppress the delay for repainting along the way. Supports backtracking the axis coordinate range via right click.

Also, saves and restores the WindowPlacement, in the registry, between executions.

The user has the option of selecting the old FPU logic, or the new TTMath library from ttmath.org. This new library provides extended precision floating point arithmetic (among other things) and is used to see if the resolution of the graphics improves. (It does not seem to improve things, but time will tell.)

Slices up the graphics workload between 12 threads. The machine used for development and testing has 10 cores, and 12 logical processors, hence the choice of 12 threads. We can specify a somewhat arbitrary number of threads, and performance vs the number of threads is a little erratic, possibly due to latency and/or overhead in the OS. I am seeing a factor of 8 to 10 improvement with 12 threads.

The number of slices defaults to 5000. In the first version the number of slices (12) and the number of threads was the same. As the threads run at different speeds, due to the amount of black space per slice, the current version uses a thread pool where each thread iterates while there is more work to do. The WorkQueue class facilitates this pool. This way, performance is maximized as no thread completes until all threads are completed. Each slice is assigned to the next thread in the pool. When the thread finishes with that slice, it getes a new slice from the work queue. All threads in the pool compete for slices on a first come first serve basis. When a thread attempts to get a new slice and there are no more, the thread exits. When all threads exit, the bitmap is painted to the screen.

Also, I implemented an HSV/RGB color scheme with a triple log scaling factor to get better color results. This is courtesy of the Windows 11 Copilot (Preview), which was an immense help. The user is able to select the RGB system or the HSV system.

The number of slices is adjustable, as are the X and Y axes ranges. The user can choose to see the axes on the final plot. The max iterations can also be adjusted, at the cost of speed.

Added modeless progress dialog box. Gave the user the ability to abort with ESCAPE.

The user can save and restore the plot parameters to and from a file using standard File Save and File Open sequences.

Compilation requires that UNICODE be defined. Some of the choices made in code, mainly wstring, do not support detecting UNICODE vs non-UNICODE, so don't compile without UNICODE defined.

In case you get linker errors, be sure to include version.lib in the linker input line. (This should not be an issue if you start with a clone of the repository, which will copy the correct Project Properties.)

Microsoft Visual Studio 2022 Community Edition 64 Bit 17.9.5

Alex Sokolek, Version 1.0.0.1, Copyright (c) March 27, 2024

Version 1.0.0.2 - April 1, 2024 - Added worker thread pool.

Version 1.0.0.3 - April 17, 2024 - Updated version for release.

Version 1.0.0.4 - April 20, 2024 - Updated comments.

Version 1.0.0.5 - April 21, 2024 - Limited mouse capture range.

Version 1.0.0.6 - April 25, 2024 - Added support for TTMath library.

Version 1.0.0.7 - April 28, 2024 - Added modeless progress dialog box.

Version 1.0.0.8 - May 4, 2024 - Abort logic and wq dtor bug.