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GLuint Harmonics::prog_P0;
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GLuint Harmonics::prog_P0;
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namespace
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namespace
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{
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{
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	string vss =
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"#version 120\n"
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"#extension GL_EXT_gpu_shader4 : enable\n"
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"	\n"
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"	\n"
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"	attribute float eigenvalue;\n"
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"	attribute float eigenvalue2;\n"
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"	varying vec3 normal;\n"
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"	varying float eig;\n"
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"	varying float eig2;\n"
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"	\n"
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"	void main(void)\n"
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"	{\n"
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"		gl_Position =  ftransform();\n"
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"		normal = normalize(gl_NormalMatrix * gl_Normal);\n"
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"		eig = eigenvalue;\n"
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"		eig2 = eigenvalue2;\n"
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"	}\n";
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string fss =
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"#version 120\n"
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"#extension GL_EXT_gpu_shader4 : enable\n"
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"	\n"
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"	varying vec3 normal;\n"
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"	varying float eig;\n"
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"	varying float eig2;\n"
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"	uniform float eig_max;\n"
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"	uniform float eig_max2;\n"
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"	uniform bool do_highlight;\n"
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"	uniform bool do_diffuse;\n"
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"	const vec3 light_dir = vec3(0,0,1);\n"
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"	\n"
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"	void main()\n"
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"	{\n"
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"		float dot_ln = dot(light_dir, normal);\n"
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"		\n"
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"		float eig_norm = eig/eig_max;\n"
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"		float stripe_signal = 100 * eig_norm;\n"
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"		vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(1,1,0,0) : vec4(.1,.1,.1,0);\n"
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"		\n"
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"		gl_FragColor = eig_norm * vec4(-1,0,1,0);\n"
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"		if(do_diffuse)   gl_FragColor *= dot_ln;\n"
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"		if(do_highlight) gl_FragColor += dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*vec4(.5,.5,.5,0);\n"
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"		gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"
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"	}\n";
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	double voronoi_area(VertexIter v)
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	double voronoi_area(VertexIter v)
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	{
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	{
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	double area_mixed = 0;
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	double area_mixed = 0;
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	//For each triangle T from the 1-ring neighborhood of x
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	//For each triangle T from the 1-ring neighborhood of x
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void Harmonics::init()
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void Harmonics::init()
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{
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{
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	is_initialized = true;
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	is_initialized = true;
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	string shader_path = "/Users/jab/GEL/apps/MeshEdit/";
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	string shader_path = "/Users/jab/GEL/apps/MeshEdit/";
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	GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, shader_path, "tri.vert");
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	GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, vss);
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	GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, shader_path, "tri.frag");
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	GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);
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	// Create the program
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	// Create the program
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	prog_P0 = glCreateProgram();
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	prog_P0 = glCreateProgram();
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	// Attach all shaders
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	// Attach all shaders