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 *
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 *
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 *  Created by J. Andreas Bærentzen on 01/09/08.
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 *  Created by J. Andreas Bærentzen on 01/09/08.
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 *  Copyright 2008 __MyCompanyName__. All rights reserved.
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 *  Copyright 2008 __MyCompanyName__. All rights reserved.
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 *
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 *
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 */
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 */
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 #include <HMesh/Manifold.h>
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 /// Eigenvalue up to which we reconstruct
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#include <CGLA/Vec3d.h>
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extern int E;
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#include <HMesh/Manifold.h>
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class Harmonics
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{
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	HMesh::Manifold& mani;
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/// Maximum eigenvalue in mesh
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	int maximum_eigenvalue;
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	static bool is_initialized;
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extern int MAX_E;
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	static GLuint prog_P0;
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	std::vector<CGLA::Vec3d> proj;
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	LinAlg::CMatrix Q;
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	LinAlg::CVector V;
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	std::vector<float> max_eig_values;
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	void make_laplace_operator();
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public:
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/// Initialize API (must be called first)
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	/// Initialize API (must be called first)
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void init_harmonics();
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	static void init();
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/// Initial analysis of harmonics (must be called second)
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	/// Initial analysis of harmonics (must be called second)
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void analyze_mesh(HMesh::Manifold& mani);
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	Harmonics(HMesh::Manifold& mani);
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/// Add a frequency to mesh reconstruction
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	/// Add a frequency to mesh reconstruction
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void add_frequency(HMesh::Manifold& mani, int es, float scale = 1.0f);
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	void add_frequency(int f, float scale = 1.0f);
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/// Reset the shape to use 0 eigenvalues
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	/// Reset the shape to use 0 eigenvalues
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void reset_shape(HMesh::Manifold& mani);
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	void reset_shape();
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/// Reconstruct the shape
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	/// Do a partial reconstruct with an interval of eigenvalues
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void reconstruct(HMesh::Manifold& mani, int E);
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	void partial_reconstruct(int E0, int E1, float scale=1.0f);
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/// Do a partial reconstruct with an interval of eigenvalues
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	/// Parse keystrokes that would influence the interactive display
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void partial_reconstruct(HMesh::Manifold& mani, int E0, int E1, float scale=1.0f);
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	void parse_key(unsigned char key);
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/// Draw with eigenvalues
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	/// Draw with eigenvalues
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void draw_eigenvalues(HMesh::Manifold& m);
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	void draw();
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};
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