From 21717d4b37c59c34990193a7acf1f50d7daeff6d Mon Sep 17 00:00:00 2001
From: Jiri Vlasak <hubacji1@fel.cvut.cz>
Date: Wed, 19 Jan 2022 22:27:13 +0100
Subject: [PATCH] Improve generate for gnuplot example code

---
 src/gen_for_gnuplot.cc | 101 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 89 insertions(+), 12 deletions(-)

diff --git a/src/gen_for_gnuplot.cc b/src/gen_for_gnuplot.cc
index 8175217..d719e06 100644
--- a/src/gen_for_gnuplot.cc
+++ b/src/gen_for_gnuplot.cc
@@ -4,27 +4,104 @@
  * SPDX-License-Identifier: GPL-3.0-only
  */
 
+#include <fstream>
 #include <iostream>
 #include <vector>
 #include "pslot.hh"
 
-int main()
+#define SP 0.5
+#define STEPS 10
+
+#define V v
+#define INIT_V vector<M> V;
+#define P(W) V.push_back(M(#W)); V.back().o.W = true;
+
+class M {
+public:
+	std::string fn;
+	std::ofstream f;
+	bcar::BicycleCar c;
+	bcar::BicycleCar::GenPlotOpts o;
+
+	void gpl()
+	{
+		this->c.gen_gnuplot_to(this->f, this->o);
+		this->c.next();
+	}
+
+	~M()
+	{
+		this->f.close();
+	}
+	M(std::string fn) : fn(fn)
+	{
+		this->f.open(this->fn);
+		this->c.sp(SP);
+		this->c.set_max_steer();
+		this->o.ALL = false;
+	}
+	M(M const& m) : fn(m.fn), c(m.c), o(m.o)
+	{
+		this->f.open(this->fn);
+	}
+	M& operator=(M m)
+	{
+		swap(*this, m);
+		return *this;
+	}
+	friend void swap(M& f, M& t)
+	{
+		using std::swap;
+		f.f.close();
+		t.f.close();
+		swap(f.fn, t.fn);
+		swap(f.c, t.c);
+		swap(f.o, t.o);
+		f.f.open(f.fn);
+		t.f.open(t.fn);
+	}
+	M(M&& m) noexcept
+	{
+		swap(*this, m);
+	}
+};
+
+void
+gen_pl_script(std::vector<M>& ms)
+{
+	using namespace std;
+	ofstream f;
+	f.open("plot.pl");
+	f << "#!/usr/bin/gnuplot" << endl;
+	f << "set size ratio -1" << endl;
+	f << "plot";
+	for (auto& m: ms) {
+		f << " '" << m.fn << "'" << " w l,";
+	}
+	f << endl;
+	f << "pause -1" << endl;
+	f.close();
+}
+
+int
+main()
 {
 	using namespace std;
 	cout << fixed;
 	cerr << fixed;
 
-	bcar::BicycleCar c;
-	bcar::BicycleCar::GenPlotOpts o;
-	o.ALL = false;
-	o.FRONT = true;
-	o.REAR = true;
-	o.MIRRORS = true;
-	c.sp(0.5);
-	c.set_max_steer();
-	for (unsigned int i = 0; i < 10; i++) {
-		c.gen_gnuplot_to(cout, o);
-		c.next();
+	INIT_V
+	P(LF_POINT)
+	P(LFM_POINT)
+	P(RF_POINT)
+	P(RFM_POINT)
+	P(CRA_POINT)
+
+	for (unsigned int i = 0; i < STEPS; i++) {
+		for (auto& m: V) {
+			m.gpl();
+		}
 	}
+	gen_pl_script(V);
 	return 0;
 }
-- 
2.39.2