From de84cc10816b2c82da0a24907bf2ba309e8cdef2 Mon Sep 17 00:00:00 2001
From: mtarini <marco.tarini@isti.cnr.it>
Date: Wed, 18 Jul 2012 22:10:11 +0000
Subject: [PATCH]

---
 apps/sample/polygonmesh_zonohedra/input.txt   |  42 ++++++
 .../polygonmesh_zonohedra.cpp                 | 121 ++++++++++++++++++
 2 files changed, 163 insertions(+)
 create mode 100644 apps/sample/polygonmesh_zonohedra/input.txt
 create mode 100644 apps/sample/polygonmesh_zonohedra/polygonmesh_zonohedra.cpp

diff --git a/apps/sample/polygonmesh_zonohedra/input.txt b/apps/sample/polygonmesh_zonohedra/input.txt
new file mode 100644
index 00000000..6d3d149a
--- /dev/null
+++ b/apps/sample/polygonmesh_zonohedra/input.txt
@@ -0,0 +1,42 @@
+cube
+0 0 1
+0 1 0
+1 0 0
+
+funny
+0 0 4
+0 4 0
+4 0 0
+0 1 1
+1 1 0
+1 0 1
+0 1 -1
+1 -1 0
+-1 0 1
+
+prism8
+0 3 0
+1 0 0
+0 0 1
+1 0 1
+1 0 -1
+
+prismCoolEnd
+0 6 0
+3 0 0
+0 0 3
+1 0 1
+1 0 -1
+1 1 1
+-1 1 1
+1 1 -1
+-1 1 -1
+
+strangeDie
+0 0 3
+0 3 0
+3 0 0
+1 -1 1
+1 1 -1
+1 -1 -1
+1 1 1
diff --git a/apps/sample/polygonmesh_zonohedra/polygonmesh_zonohedra.cpp b/apps/sample/polygonmesh_zonohedra/polygonmesh_zonohedra.cpp
new file mode 100644
index 00000000..78308e48
--- /dev/null
+++ b/apps/sample/polygonmesh_zonohedra/polygonmesh_zonohedra.cpp
@@ -0,0 +1,121 @@
+/****************************************************************************
+ * VCGLib                                                            o o     *
+ * Visual and Computer Graphics Library                            o     o   *
+ *                                                                _   O  _   *
+ * Copyright(C) 2004                                                \/)\/    *
+ * Visual Computing Lab                                            /\/|      *
+ * ISTI - Italian National Research Council                           |      *
+ *                                                                    \      *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * 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 (http://www.gnu.org/licenses/gpl.txt)          *
+ * for more details.                                                         *
+ *                                                                           *
+ ****************************************************************************/
+
+#include <vector>
+#include <stdio.h>
+
+#include <vcg/simplex/vertex/base.h>
+#include <vcg/simplex/face/base.h>
+#include <vcg/simplex/edge/base.h>
+#include <vcg/complex/complex.h>
+
+#include <vcg/complex/algorithms/create/zonohedron.h>
+
+#include <vcg/complex/algorithms/polygon_support.h>
+
+#include <wrap/io_trimesh/export_off.h>
+
+
+
+class MyVertex;
+class MyEdge;
+class MyFace;
+
+struct MyUsedTypes: public vcg::UsedTypes<vcg::Use<MyVertex>::AsVertexType,vcg::Use<MyEdge>::AsEdgeType,vcg::Use<MyFace>::AsFaceType>{};
+
+class MyVertex : public vcg::Vertex< MyUsedTypes,vcg::vertex::Coord3f,vcg::vertex::BitFlags >{};
+
+class MyEdge : public vcg::Edge< MyUsedTypes > {};
+
+class MyFace : public vcg::Face< MyUsedTypes,
+	vcg::face::FFAdj,
+	vcg::face::VertexRef,
+  vcg::face::Normal3f,
+	vcg::face::BitFlags > {};
+
+// the main mesh class
+class MyMesh : public vcg::tri::TriMesh<std::vector<MyVertex>, std::vector<MyFace> > {};
+
+
+
+// example 1: build a cube as a Zonohedron
+void example1(){
+
+	vcg::tri::Zonohedron<float> z;
+	z.addVector( 0,0,1 );
+	z.addVector( 0,1,0 );
+	z.addVector( 1,0,0 );
+
+	MyMesh m;
+	z.createMesh(m); // this will be a cube
+
+	vcg::tri::UpdateTopology<MyMesh>::FaceFace(m); // needed by exporter
+
+	int savemask = vcg::tri::io::Mask::IOM_BITPOLYGONAL;
+	vcg::tri::io::ExporterOFF<MyMesh>::Save(m,"cube.off",savemask);
+}
+
+
+// example2: reads input file, builds zonohedra as described there
+void example2(){
+
+	FILE* f = fopen("input.txt","rt");
+	if (!f) return;
+
+	while (1) {
+
+		// read mesh name
+		char meshFilename[1024], fullMeshFilename[1024];
+		if (fscanf(f,"%s",meshFilename)!=1) break;
+		sprintf(fullMeshFilename,"%s.off",meshFilename);
+
+		// build input vector
+		vcg::tri::Zonohedron<float> z;
+		while (1) {
+			float a,b,c;
+			if (fscanf(f,"%f %f %f",&a, &b, &c)!=3) break;
+			z.addVector(a,b,c);
+		}
+
+		printf("Building %s from %d vectors...\n",fullMeshFilename, z.vectors().size() );
+
+		MyMesh m;
+		z.createMesh(m);
+
+		vcg::tri::UpdateTopology<MyMesh>::FaceFace(m); // needed by exporter
+
+		// normally, faces with more than 4sides are split into parallelograms
+		// this merges them (optional, try removing it!)
+		vcg::tri::PolygonSupport<MyMesh,int>::MergeFlatFaces(m);
+
+		int savemask = vcg::tri::io::Mask::IOM_BITPOLYGONAL;
+		vcg::tri::io::ExporterOFF<MyMesh>::Save(m,fullMeshFilename,savemask);
+	}
+
+}
+
+int main(int argc, char *argv[]){
+	example1();
+	example2();
+	return 0;
+}