Replace the C++ implementation with the Rust port

The Rust port (formerly gipfel-rs) is now the official successor to the
FLTK/GSL C++ code base. This squashes the port into a single commit and
removes the C++ sources (they remain in the git history below).

Layout:
  crates/gipfel-core  headless core: hills, panorama geometry, projections
                      (maxima-generated derivatives), pure-Rust LM fit,
                      gipfel: JPEG comment + EXIF I/O, profiles, stitching
  crates/gipfel-cli   command-line tools (export, info, stitch, profiles)
  crates/gipfel-app   Cosmic DE (libcosmic) GUI, binary name `gipfel`
  codegen/            maxima scripts + regen.sh for the projection code
  tests/              golden files + C++ reference harnesses (historical)

The original README is kept for now; it will be updated to describe the
Rust build. gipfel.dat, AUTHORS, ChangeLog and NEWS are unchanged.

1 files changed, 0 insertions, 34 deletions

diff --git a/src/PreviewOutputImage.H b/src/PreviewOutputImage.H
deleted file mode 100644
index f37493b..0000000
--- a/src/PreviewOutputImage.H
+++ /dev/null
@@ -1,34 +0,0 @@
-//
-// Copyright 2006-2009 Johannes Hofmann <Johannes.Hofmann@gmx.de>
-//
-// This software may be used and distributed according to the terms
-// of the GNU General Public License, incorporated herein by reference.
-
-#ifndef PREVIEWOUTPUTIMAGE_H
-#define PREVIEWOUTPUTIMAGE_H
-
-#include <stdio.h>
-
-#include <FL/Fl_Widget.H>
-#include <FL/Fl_Image.H>
-
-#include "OutputImage.H"
-
-class PreviewOutputImage : public OutputImage , public Fl_Widget {
-	private:
-		uchar *data;
-		int d;
-
-	protected:
-		int init_internal();
-		int set_pixel_internal(int x, int r, int g, int b);	
-		int next_line_internal();
-
-	public:
-		PreviewOutputImage(int X, int Y, int W, int H);
-		~PreviewOutputImage();
-
-		void draw();
-};
-
-#endif