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%%
%% This is file `sunpath.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% sunpath.dtx (with options: `package')
%%
\NeedsTeXFormat{LaTeX2e}[2022/11/01]
\ProvidesPackage{sunpath}[2024/10/20 v0.5 Draw Sun Path]
\RequirePackage{expl3}
\RequirePackage{tikz}
\usetikzlibrary{calc,math,through}
\pgfkeys{/tikz/.cd,
spradius/.store in=\spradius,
spradius=5.5,
altitude mapping/.store in = \altmapping,
altitude mapping=spherical
}
\makeatletter
\tikzset{
cs/azi/.store in=\tikz@cs@azi,
cs/alt/.store in=\tikz@cs@alt,
}
\tikzset{
declare function = {
spherical(\alt) = \spradius * cos(\alt);
equidistance(\alt) = \spradius - \spradius*abs(\alt)/90;
altradius(\alt) = \altmapping(\alt);
aziangle(\x) = 90 - \x;
}
}
\tikzdeclarecoordinatesystem{sunpath}%
{
\tikzset{cs/.cd,azi=0,alt=0,#1}
\tikzmath{
\r = altradius(\tikz@cs@alt);
\angle = aziangle(\tikz@cs@azi);
}
\pgfpointadd{\pgfpointxy{0}{0}}{%
\pgfpointpolarxy{\angle}{\r}
}
}
\makeatother
\tikzset{
sunpath grid/.style={help lines,color=blue!45!white!80},
sunpath tick/.style={draw,thick,color=blue!90!white!80},
sunpath minor tick/.style={draw,thin,color=blue!90!white!80},
altitude label/.style={
font=\footnotesize\sffamily,
fill=white,minimum width={width("90")+2pt},
inner sep=0.5pt
},
azimuth label/.style={
font=\footnotesize\sffamily,
minimum width={width("360")+2pt},
inner sep=0.5pt
},
direction label/.style={
font=\normalsize\rmfamily
}
}
\NewDocumentCommand\spcrosshair{O{sunpath grid}}{
\draw[#1] (-\spradius,0) -- (\spradius,0);
\draw[#1] (0,-\spradius) -- (0,\spradius);
}
\NewDocumentCommand\spgeodirection{O{22pt} O{direction label}}{
\foreach \dname / \dgrad in {N/0, E/90, S/180, W/270}{
\tikzmath{
\polarangle = aziangle(\dgrad);
}
\coordinate (D) at (\polarangle:\spradius cm + #1);
\node[#2,anchor=270-\dgrad] at (D) {\dname};
}
}
\NewDocumentCommand\spaltitudecircle{m O{sunpath grid}}{
\foreach \altitude in #1 {
\coordinate (A) at (sunpath cs:azi=0,alt=\altitude) ;
\path[draw,sunpath grid] (0,0) circle[radius=altradius(\altitude)];
}
}
\NewDocumentCommand\spaltitudelabel{m O{135} O{altitude label}}{
\foreach \altitude in #1 {
\coordinate (A) at (sunpath cs:azi=#2,alt=\altitude) ;
\node [anchor=east,#3] at (A) {\altitude};
}
}
\NewDocumentCommand\spazimuthlabel{m O{azimuth label}}{
\foreach \azimuth in #1 {
\tikzmath{
\polarangle = aziangle(\azimuth);
}
\coordinate (D) at (\polarangle:\spradius cm + 13pt);
\node[#2] at (D) {\azimuth};
}
}
\NewDocumentCommand\spazimuthline{m m m}{
\foreach \azimuth in #1{
\draw[sunpath grid]
(sunpath cs:azi=\azimuth,alt={#2}) -- (sunpath cs:azi=\azimuth,alt={#3});
}
}
\NewDocumentCommand\spazimuthtick{O{6pt} O{2.5pt} O{5pt}}{
\foreach \azimuth in {10,20,...,360}{
\tikzmath{
\pa = aziangle(\azimuth);
}
\path[sunpath tick] (\pa:\spradius) -- (\pa:{\spradius cm + #1});
}
\foreach \azimuth in {1,2,...,360}{
\tikzmath{
\pa = aziangle(\azimuth);
}
\path[sunpath minor tick] (\pa:\spradius) -- (\pa:{\spradius cm + #2});
}
\foreach \azimuth in {15,45,...,345}{
\tikzmath{
\pa = aziangle(\azimuth);
}
\path[sunpath minor tick] (\pa:\spradius) -- (\pa:{\spradius cm + #3});
}
}
%%%%%%%%%%%%%%
%% Copyright (C) 2024 by
%% Hong-Phuc Bui
%%
%% It may be distributed and/or modified under the conditions of
%% the LaTeX Project Public License (LPPL), either version 1.3c of
%% this license or (at your option) any later version. The latest
%% version of this license is in the file:
%%
%% https://www.latex-project.org/lppl.txt
%%
%%
%% This work consists of the files sunpath.dtx,
%% sunpath.ins,
%% and the derived files sunpath.pdf,
%% sunpath.sty.
%%
%%
%% End of file `sunpath.sty'.
|
