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, 26 deletions

diff --git a/src/ProjectionCylindrical.cxx b/src/ProjectionCylindrical.cxx
deleted file mode 100644
index 094b494..0000000
--- a/src/ProjectionCylindrical.cxx
+++ /dev/null
@@ -1,26 +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.
-
-#include <stdio.h>
-#include <math.h>
-
-#include "ProjectionCylindrical.H"
-
-#include "ProjectionCylindrical_funcs.cxx"
-
-int
-ProjectionCylindrical::comp_params(const Hills *h, ViewParams *parms) {
-	Hills h_monotone(h);
-
-	h_monotone.sort(Hills::SORT_X);
-
-	// ensure that alpha is increasing with x.
-	for (int i = 1; i < h_monotone.get_num(); i++)
-		if (h_monotone.get(i)->alph < h_monotone.get(i - 1)->alph)
-			h_monotone.get(i)->alph += asin(1.0) * 4.0; // += 2pi
-
-	return ProjectionLSQ::comp_params(&h_monotone, parms);
-}