Add examples/mandelbrot.pl demo#1
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Self-contained demo showing the three main image-writing entry points:
- write_true_png() - 24-bit RGB sunset gradient
- write_png() - indexed PNG with a custom 256-entry rainbow LUT
(Mandelbrot set, 800x600)
- $obj->write_Jpeg() - same Mandelbrot via the OO interface
The Mandelbrot computation itself is fully vectorised in PDL (no per-pixel
loops), making the demo a small advert for what PDL+PDL::IO::GD can do.
Runs in a few seconds with no external data files. Output goes to the cwd.
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Adds a small standalone demo script at
examples/mandelbrot.plshowcasing the three main image-writing entry points ofPDL::IO::GD:write_true_png()— for a 24-bit RGB sunset gradientwrite_png()with a custom 256-entry rainbow LUT — for an indexed-colour Mandelbrot set$image->write_Jpeg()interface — same Mandelbrot as JPEGThe Mandelbrot computation is fully vectorised in PDL (no per-pixel loops), making the script a small illustration of why someone might want PDL::IO::GD in the first place. Self-contained, no external data files, runs in a few seconds, produces three pretty images in the cwd.
Generated by Karl Glazebrook + Claude during PDL 2.104 / SciPDL v2.104 work — the JPEG output specifically tested SciPDL's new bundled libjpeg-turbo + libgd build path.