From 375d87a9b0ec1cf2fffd705adb870c86144d2400 Mon Sep 17 00:00:00 2001 From: Johannes Hofmann Date: Mon, 26 Oct 2026 20:05:20 +0100 Subject: 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. --- codegen/lsq_rectilinear.mac | 60 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 codegen/lsq_rectilinear.mac (limited to 'codegen/lsq_rectilinear.mac') diff --git a/codegen/lsq_rectilinear.mac b/codegen/lsq_rectilinear.mac new file mode 100644 index 0000000..4dbb36a --- /dev/null +++ b/codegen/lsq_rectilinear.mac @@ -0,0 +1,60 @@ +/* + * Copyright 2006-2009 Johannes Hofmann + */ + +/* + * rectilinear (pinhole) projection model with distortion correction + */ + +/* switch to cartesian coordinates */ +c_x : cos(m_elev) * cos(m_view - c_view)$ +c_y : cos(m_elev) * sin(m_view - c_view)$ +c_z : sin(m_elev)$ + +/* pitch rotation */ +c_x_rot : cos(c_pitch) * c_x + sin(c_pitch) * c_z$ +c_y_rot : c_y$ +c_z_rot : -sin(c_pitch) * c_x + cos(c_pitch) * c_z$ + +/* pinhole projection */ +x : c_y_rot / c_x_rot$ +y : -c_z_rot / c_x_rot$ + +/* rotation around view axis */ +x_rot : y * sin(c_roll) + x * cos(c_roll) + x0$ +y_rot : y * cos(c_roll) - x * sin(c_roll)$ + +/* distortion correction */ +d : sqrt(x_rot ^ 2 + y_rot ^ 2)$ +dist_fact : d ^ 2 * k1 + d * k0$ +x_dist : x_rot * (1 + dist_fact) * scale$ +y_dist : y_rot * (1 + dist_fact) * scale$ + +/* + * Some mangling for C code generation + */ + +load("expr2rust.mac")$ + +x_expand : trigexpand(x_dist)$ +y_expand : trigexpand(y_dist)$ + +args: "c_view: f64, c_pitch: f64, c_roll: f64, scale: f64, k0: f64, k1: f64, x0: f64, m_view: f64, m_elev: f64"$ + +expr2rust("mac_x", args, x_expand)$ +expr2rust("mac_y", args, y_expand)$ + +expr2rust("mac_x_dc_view", args, diff(x_expand, c_view))$ +expr2rust("mac_x_dc_pitch", args, diff(x_expand, c_pitch))$ +expr2rust("mac_x_dc_roll", args, diff(x_expand, c_roll))$ +expr2rust("mac_x_dscale", args, diff(x_expand, scale))$ +expr2rust("mac_x_dk0", args, diff(x_expand, k0))$ +expr2rust("mac_x_dk1", args, diff(x_expand, k1))$ +expr2rust("mac_x_dx0", args, diff(x_expand, x0))$ +expr2rust("mac_y_dc_view", args, diff(y_expand, c_view))$ +expr2rust("mac_y_dc_pitch", args, diff(y_expand, c_pitch))$ +expr2rust("mac_y_dc_roll", args, diff(y_expand, c_roll))$ +expr2rust("mac_y_dscale", args, diff(y_expand, scale))$ +expr2rust("mac_y_dk0", args, diff(y_expand, k0))$ +expr2rust("mac_y_dk1", args, diff(y_expand, k1))$ +expr2rust("mac_y_dx0", args, diff(y_expand, x0))$ -- cgit v1.2.3