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+/* MetaContour, version 0.1 -------------------------------------- */
+/* Copyright(C) 2004, Brooks Moses */
+/* */
+/* This version of MetaContour is made available under the Gnu */
+/* Public License; see below for details. */
+/* */
+/* This is a very pre-release version of MetaContour, distributed */
+/* primarily as an example of a use of MetaPlot. It can be */
+/* compiled with gcc using the line: */
+/* */
+/* g++ metacontour.cc cpoint.cc metacontour_main.cc */
+/* */
+/*-----------------------------------------------------------------*/
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#include<string>
+#include<vector>
+#include<iostream>
+#include<cmath>
+#include"metacontour.h"
+using namespace std;
+
+int main() {
+ int il = 21;
+ int jl = 11;
+ double pi = atan(1.0)*4.0;
+
+ cparray GridData(il,jl);
+
+ for (int i=0; i<il; i++) {
+ double theta = 2.0 * pi * double(i) / (il-1.0);
+ for (int j=0; j<jl; j++) {
+ double r = 1.5 * (double(j)/(jl-1.0))*(double(j)/(jl-1.0)) + 0.03;
+
+ double x = - r * cos(theta);
+ double y = r * sin(theta);
+
+ double z = (-0.5 * log(r)) + x;
+
+ GridData(i,j) = cpoint(0.5*(x+1.0),0.5*(y+1.0),z);
+ }
+ }
+
+ vector<double> ContourList(31);
+
+ cout << "color contourcolor[];\n";
+ for (int k=0; k<31; k++) {
+ ContourList[k] = 0.1 * k - 1.0;
+ cout << "contourcolor[" << k << "] = " << (1.0 - k/50.0) << "white;\n";
+ }
+
+ string PlotName = "contplotA";
+
+ MetapostContours testplot(GridData, ContourList, PlotName);
+
+ cout << '\n' << testplot.Grid();
+ cout << testplot.LinePlot();
+ cout << testplot.FillPlot();
+
+}
+