various stuff in opengl demos such as a better model,

stable trackball for the fly navigation mode, and started
to put some GUI elements...

1 files changed, 45 insertions, 0 deletions

diff --git a/demos/opengl/icosphere.h b/demos/opengl/icosphere.h
new file mode 100644
index 000000000..e5fa39217
--- /dev/null
+++ b/demos/opengl/icosphere.h
@@ -0,0 +1,45 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, 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.
+//
+// Eigen 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 Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EIGEN_ICOSPHERE_H
+#define EIGEN_ICOSPHERE_H
+
+#include <Eigen/Core>
+#include <vector>
+
+class IcoSphere
+{
+  public:
+    IcoSphere(unsigned int levels=1);
+    const std::vector<Eigen::Vector3f>& vertices() const { return mVertices; }
+    const std::vector<int>& indices(int level) const;
+    void draw(int level);
+  protected:
+    void _subdivide();
+    std::vector<Eigen::Vector3f> mVertices;
+    std::vector<std::vector<int>*> mIndices;
+    std::vector<int> mListIds;
+};
+
+#endif // EIGEN_ICOSPHERE_H