WebSVN – gelsvn – Diff – /trunk/apps/MeshEdit/harmonics.cpp


/*
 *  harmonics.cpp
 *  GEL
 *
 *  Created by J. Andreas Bærentzen on 01/09/08.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */
 
#include <iostream>
#include <CGLA/Vec3f.h>
#include <CGLA/Vec3d.h>
#include <LinAlg/Matrix.h>
#include <LinAlg/Vector.h>
#include <LinAlg/LapackFunc.h>
 
#include <GL/glew.h>
#include <GLGraphics/glsl_shader.h>
 
#include <HMesh/Manifold.h>
#include <HMesh/VertexCirculator.h>
#include <HMesh/FaceCirculator.h>
#include <HMesh/build_manifold.h>
#include <HMesh/mesh_optimization.h>
#include <HMesh/triangulate.h>
#include <HMesh/load.h>
#include <HMesh/x3d_save.h>
 
#include <GLConsole/GLConsole.h>
 
#include "harmonics.h"
#include "wireframe.h"
 
using namespace CGLA;
using namespace std;
using namespace HMesh;
using namespace Geometry;
using namespace GLGraphics;
using namespace LinAlg;
 
bool Harmonics::is_initialized=false;
GLuint Harmonics::prog_P0;
 
 
namespace
{
 
	string vss =
"#version 120\n"
"#extension GL_EXT_gpu_shader4 : enable\n"
"	\n"
"	\n"
"	attribute float eigenvalue;\n"
"	attribute float eigenvalue2;\n"
"	varying vec3 normal;\n"
"	varying float eig;\n"
"	varying float eig2;\n"
"	\n"
"	void main(void)\n"
"	{\n"
"		gl_Position =  ftransform();\n"
"		normal = normalize(gl_NormalMatrix * gl_Normal);\n"
"		eig = eigenvalue;\n"
"		eig2 = eigenvalue2;\n"
"	}\n";
	
string fss = 	
"#version 120\n"
"#extension GL_EXT_gpu_shader4 : enable\n"
"	\n"
"	varying vec3 normal;\n"
"	varying float eig;\n"
"	varying float eig2;\n"
"	uniform float eig_max;\n"
"	uniform float eig_max2;\n"
"	uniform bool do_highlight;\n"
"	uniform bool do_diffuse;\n"
"	const vec3 light_dir = vec3(0,0,1);\n"
"	\n"
"	void main()\n"
"	{\n"
"		float dot_ln = dot(light_dir, normal);\n"
"		\n"
"		float eig_norm = eig/eig_max;\n"
"		float stripe_signal = 100 * eig_norm;\n"
"		vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(1,1,0,0) : vec4(.1,.1,.1,0);\n"
"		\n"
"		gl_FragColor = eig_norm * vec4(-1,0,1,0);\n"
"		if(do_diffuse)   gl_FragColor *= dot_ln;\n"
"		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"
"		gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"
"	}\n";
	
	double voronoi_area(VertexIter v)
	{
	double area_mixed = 0;
	//For each triangle T from the 1-ring neighborhood of x
	for(VertexCirculator vc(v); !vc.end(); ++vc)
	{
		FaceIter f = vc.get_face();
		double f_area = area(f);
		
		HalfEdgeIter he = vc.get_halfedge();
		Vec3d v1(he->vert->pos);
		Vec3d v2(he->next->vert->pos);
		Vec3d v0(he->next->next->vert->pos);
		
		double a0 = acos(dot(v1-v0, v2-v0)/(length(v1-v0)*length(v2-v0)));
		double a1 = acos(dot(v2-v1, v0-v1)/(length(v2-v1)*length(v0-v1)));
		double a2 = acos(dot(v0-v2, v1-v2)/(length(v0-v2)*length(v1-v2)));
		
		if(a0>(M_PI/2.0) && a1>(M_PI/2.0) && a2>(M_PI/2.0)) // f is non-obtuse
		{
			// Add Voronoi formula (see Section 3.3)
			area_mixed += (1.0/8) * 
			((1.0/tan(a1)) * sqr_length(v2-v0) + 
			 (1.0/tan(a2)) * sqr_length(v1-v0));
		}
		else // Voronoi inappropriate
		{
			// Add either area(f)/4 or area(f)/2
			if(a0>M_PI/2.0)// the angle of f at x is obtuse
				area_mixed += f_area/2;
			else
				area_mixed += f_area/4;
		}
	}
	return area_mixed;
}
 
	double barycentric_area(VertexIter v)
	{
	double barea = 0;
	//For each triangle T from the 1-ring neighborhood of x
	for(VertexCirculator vc(v); !vc.end(); ++vc)
	{
		FaceIter f = vc.get_face();
		barea += area(f)/3.0;
	}
	return barea;
}
 
}
 
void Harmonics::make_laplace_operator()
{
	Q.Resize(mani.no_vertices(), mani.no_vertices());
	
	for(VertexIter v = mani.vertices_begin(); v != mani.vertices_end(); ++v)
		if(!is_boundary(v))
		{
			int i = v->touched;
			double area_i = voronoi_area(v);
			Vec3d vertex(v->pos);
			Vec3d curv_normal(0);
			double a_sum = 0;
			for(VertexCirculator vc(v); !vc.end(); ++vc)
			{
				int j = vc.get_vertex()->touched;
				double area_j = voronoi_area(vc.get_vertex());
				HalfEdgeIter h = vc.get_halfedge();
				Vec3d nbr(h->vert->pos);
				Vec3d left(h->next->vert->pos);
				Vec3d right(h->opp->prev->opp->vert->pos);
				
				double d_left = dot(normalize(nbr-left),
									normalize(vertex-left));
				double d_right = dot(normalize(nbr-right),
									 normalize(vertex-right));
				double a_left  = acos(min(1.0, max(-1.0, d_left)));
				double a_right = acos(min(1.0, max(-1.0, d_right)));
				
				double w = 1.0/tan(a_left) + 1.0/tan(a_right);
				
				Q[i][j] = -w/sqrt(area_i*area_j);						
				//Q[i][j] = -1;						
				a_sum += Q[i][j];
			}
			Q[i][i] = -a_sum;
		}
	EigenSolutionsSym(Q,V);
	
}
 
 
Harmonics::Harmonics(Manifold& _mani):mani(_mani)
{
	assert(is_initialized);
		
	triangulate(mani);
	mani.enumerate_vertices();
	maximum_eigenvalue = mani.no_vertices()-1;
	make_laplace_operator();
	
	proj.resize(maximum_eigenvalue);
	max_eig_values.resize(maximum_eigenvalue, 1e-10);
	for(int es=0; es<maximum_eigenvalue; ++es)
	{
		for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)
		{
			int i= v->touched;
			proj[es] += Vec3d(v->pos) * Q[es][i];
			max_eig_values[es] = max(max_eig_values[es], static_cast<float>(abs(Q[es][i])));
		}
	}
}
 
void Harmonics::add_frequency(int es, float scale)
{
	if(es<maximum_eigenvalue)
		for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)
		{
			Vec3f& p = v->pos; 
			v->pos += Vec3f(proj[es] * Q[es][v->touched] * scale);
		}
	
}
 
void Harmonics::reset_shape()
{
	for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)
		v->pos = Vec3f(0);	
}
void Harmonics::partial_reconstruct(int E0, int E1, float scale)
{
	for(int es=E0;es<=E1;++es)
		add_frequency(es, scale);
}
 
 
template<typename T>
T& get_CVar_ref(const std::string& s)
{
	return *reinterpret_cast<T*> (GetCVarData(s));
}
 
void Harmonics::parse_key(unsigned char key)
{
		int& display_eigenvalue = get_CVar_ref<int>("display.harmonics.eigenvalue");
		int& display_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");
		int& display_highlight = get_CVar_ref<int>("display.harmonics.highlight");
		switch(key) {
			case '+': 
				display_eigenvalue = min(display_eigenvalue+1, maximum_eigenvalue); 
				break;
			case '-': 
				display_eigenvalue = max(display_eigenvalue-1, 0); 
				break;
			case 'd':	
				display_diffuse = !display_diffuse; 
				break;
			case 'h':
				display_highlight = !display_highlight;
				break;			
		}
 
}
 
void Harmonics::draw()
{
	int& display_eigen = get_CVar_ref<int>("display.harmonics.eigenvalue");
	int& display_eigen2 = get_CVar_ref<int>("display.harmonics.eigenvalue");
	int& do_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");
	int& do_highlight = get_CVar_ref<int>("display.harmonics.highlight");
 
 
	glUseProgram(prog_P0);
	glUniform1f(glGetUniformLocation(prog_P0,"eig_max"),max_eig_values[display_eigen]);
	glUniform1f(glGetUniformLocation(prog_P0,"eig_max2"),max_eig_values[display_eigen2]);
	glUniform1i(glGetUniformLocation(prog_P0,"do_diffuse"),do_diffuse);
   	glUniform1i(glGetUniformLocation(prog_P0,"do_highlight"),do_highlight);
	GLuint attrib = glGetAttribLocationARB(prog_P0, "eigenvalue");
	GLuint attrib2 = glGetAttribLocationARB(prog_P0, "eigenvalue2");
	
	glFrontFace(GL_CW);
	for(FaceIter f=mani.faces_begin(); f != mani.faces_end(); ++f)
	{
		FaceCirculator fc(f);
		glBegin(GL_TRIANGLES);
		while(!fc.end())
		{
			int i = fc.get_vertex()->touched;
			glVertexAttrib1f(attrib,Q[display_eigen][i]);
			glVertexAttrib1f(attrib2,Q[display_eigen2][i]);
			glNormal3fv(normal(fc.get_vertex()).get());
			glVertex3fv(fc.get_vertex()->pos.get());
			++fc;
		}
		glEnd();
	}
	glFrontFace(GL_CCW);
	glUseProgram(0);
}
 
void Harmonics::init()
{
	is_initialized = true;
	string shader_path = "/Users/jab/GEL/apps/MeshEdit/";
	GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, vss);
	GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);
	
	// Create the program
	prog_P0 = glCreateProgram();
	
	// Attach all shaders
	if(vs) glAttachShader(prog_P0, vs);
	if(fs) glAttachShader(prog_P0, fs);
	
	// Link the program object and print out the info log
	glLinkProgram(prog_P0);
	print_glsl_program_log(prog_P0);
	
	// Install program object as part of current state
	glUseProgram(0);
	
	static CVar<int> display_eigen("display.harmonics.eigenvalue",0);
	static CVar<int> display_eigen2("display.harmonics.eigenvalue2",0);
	static CVar<int> do_highlight("display.harmonics.highlight",1);
	static CVar<int> do_diffuse("display.harmonics.diffuse",1);
 
}
 

Rev 394	Rev 397
1	`/*`	1	`/*`
2	`* harmonics.cpp`	2	`* harmonics.cpp`
3	`* GEL`	3	`* GEL`
4	`*`	4	`*`
5	`* Created by J. Andreas Bærentzen on 01/09/08.`	5	`* Created by J. Andreas Bærentzen on 01/09/08.`
6	`* Copyright 2008 __MyCompanyName__. All rights reserved.`	6	`* Copyright 2008 __MyCompanyName__. All rights reserved.`
7	`*`	7	`*`
8	`*/`	8	`*/`
9		9
10	`#include <iostream>`	10	`#include <iostream>`
11	`#include <CGLA/Vec3f.h>`	11	`#include <CGLA/Vec3f.h>`
12	`#include <CGLA/Vec3d.h>`	12	`#include <CGLA/Vec3d.h>`
13	`#include <LinAlg/Matrix.h>`	13	`#include <LinAlg/Matrix.h>`
14	`#include <LinAlg/Vector.h>`	14	`#include <LinAlg/Vector.h>`
15	`#include <LinAlg/LapackFunc.h>`	15	`#include <LinAlg/LapackFunc.h>`
16		16
17	`#include <GL/glew.h>`	17	`#include <GL/glew.h>`
18	`#include <GLGraphics/glsl_shader.h>`	18	`#include <GLGraphics/glsl_shader.h>`
19		19
20	`#include <HMesh/Manifold.h>`	20	`#include <HMesh/Manifold.h>`
21	`#include <HMesh/VertexCirculator.h>`	21	`#include <HMesh/VertexCirculator.h>`
22	`#include <HMesh/FaceCirculator.h>`	22	`#include <HMesh/FaceCirculator.h>`
23	`#include <HMesh/build_manifold.h>`	23	`#include <HMesh/build_manifold.h>`
24	`#include <HMesh/mesh_optimization.h>`	24	`#include <HMesh/mesh_optimization.h>`
25	`#include <HMesh/triangulate.h>`	25	`#include <HMesh/triangulate.h>`
26	`#include <HMesh/load.h>`	26	`#include <HMesh/load.h>`
27	`#include <HMesh/x3d_save.h>`	27	`#include <HMesh/x3d_save.h>`
28		28
29	`#include <GLConsole/GLConsole.h>`	29	`#include <GLConsole/GLConsole.h>`
30		30
31	`#include "harmonics.h"`	31	`#include "harmonics.h"`
32	`#include "wireframe.h"`	32	`#include "wireframe.h"`
33		33
34	`using namespace CGLA;`	34	`using namespace CGLA;`
35	`using namespace std;`	35	`using namespace std;`
36	`using namespace HMesh;`	36	`using namespace HMesh;`
37	`using namespace Geometry;`	37	`using namespace Geometry;`
38	`using namespace GLGraphics;`	38	`using namespace GLGraphics;`
39	`using namespace LinAlg;`	39	`using namespace LinAlg;`
40		40
41	`bool Harmonics::is_initialized=false;`	41	`bool Harmonics::is_initialized=false;`
42	`GLuint Harmonics::prog_P0;`	42	`GLuint Harmonics::prog_P0;`
43		43
44		44
45	`namespace`	45	`namespace`
46	`{`	46	`{`
-		47
-		48	`string vss =`
-		49	`"#version 120\n"`
-		50	`"#extension GL_EXT_gpu_shader4 : enable\n"`
-		51	`" \n"`
-		52	`" \n"`
-		53	`" attribute float eigenvalue;\n"`
-		54	`" attribute float eigenvalue2;\n"`
-		55	`" varying vec3 normal;\n"`
-		56	`" varying float eig;\n"`
-		57	`" varying float eig2;\n"`
-		58	`" \n"`
-		59	`" void main(void)\n"`
-		60	`" {\n"`
-		61	`" gl_Position = ftransform();\n"`
-		62	`" normal = normalize(gl_NormalMatrix * gl_Normal);\n"`
-		63	`" eig = eigenvalue;\n"`
-		64	`" eig2 = eigenvalue2;\n"`
-		65	`" }\n";`
-		66
-		67	`string fss =`
-		68	`"#version 120\n"`
-		69	`"#extension GL_EXT_gpu_shader4 : enable\n"`
-		70	`" \n"`
-		71	`" varying vec3 normal;\n"`
-		72	`" varying float eig;\n"`
-		73	`" varying float eig2;\n"`
-		74	`" uniform float eig_max;\n"`
-		75	`" uniform float eig_max2;\n"`
-		76	`" uniform bool do_highlight;\n"`
-		77	`" uniform bool do_diffuse;\n"`
-		78	`" const vec3 light_dir = vec3(0,0,1);\n"`
-		79	`" \n"`
-		80	`" void main()\n"`
-		81	`" {\n"`
-		82	`" float dot_ln = dot(light_dir, normal);\n"`
-		83	`" \n"`
-		84	`" float eig_norm = eig/eig_max;\n"`
-		85	`" float stripe_signal = 100 * eig_norm;\n"`
-		86	`" vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(1,1,0,0) : vec4(.1,.1,.1,0);\n"`
-		87	`" \n"`
-		88	`" gl_FragColor = eig_norm * vec4(-1,0,1,0);\n"`
-		89	`" if(do_diffuse) gl_FragColor *= dot_ln;\n"`
-		90	`" if(do_highlight) gl_FragColor += dot_lndot_lndot_lndot_lndot_lndot_lndot_ln*vec4(.5,.5,.5,0);\n"`
-		91	`" gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));\n"`
-		92	`" }\n";`
47		93
48	`double voronoi_area(VertexIter v)`	94	`double voronoi_area(VertexIter v)`
49	`{`	95	`{`
50	`double area_mixed = 0;`	96	`double area_mixed = 0;`
51	`//For each triangle T from the 1-ring neighborhood of x`	97	`//For each triangle T from the 1-ring neighborhood of x`
52	`for(VertexCirculator vc(v); !vc.end(); ++vc)`	98	`for(VertexCirculator vc(v); !vc.end(); ++vc)`
53	`{`	99	`{`
54	`FaceIter f = vc.get_face();`	100	`FaceIter f = vc.get_face();`
55	`double f_area = area(f);`	101	`double f_area = area(f);`
56		102
57	`HalfEdgeIter he = vc.get_halfedge();`	103	`HalfEdgeIter he = vc.get_halfedge();`
58	`Vec3d v1(he->vert->pos);`	104	`Vec3d v1(he->vert->pos);`
59	`Vec3d v2(he->next->vert->pos);`	105	`Vec3d v2(he->next->vert->pos);`
60	`Vec3d v0(he->next->next->vert->pos);`	106	`Vec3d v0(he->next->next->vert->pos);`
61		107
62	`double a0 = acos(dot(v1-v0, v2-v0)/(length(v1-v0)*length(v2-v0)));`	108	`double a0 = acos(dot(v1-v0, v2-v0)/(length(v1-v0)*length(v2-v0)));`
63	`double a1 = acos(dot(v2-v1, v0-v1)/(length(v2-v1)*length(v0-v1)));`	109	`double a1 = acos(dot(v2-v1, v0-v1)/(length(v2-v1)*length(v0-v1)));`
64	`double a2 = acos(dot(v0-v2, v1-v2)/(length(v0-v2)*length(v1-v2)));`	110	`double a2 = acos(dot(v0-v2, v1-v2)/(length(v0-v2)*length(v1-v2)));`
65		111
66	`if(a0>(M_PI/2.0) && a1>(M_PI/2.0) && a2>(M_PI/2.0)) // f is non-obtuse`	112	`if(a0>(M_PI/2.0) && a1>(M_PI/2.0) && a2>(M_PI/2.0)) // f is non-obtuse`
67	`{`	113	`{`
68	`// Add Voronoi formula (see Section 3.3)`	114	`// Add Voronoi formula (see Section 3.3)`
69	`area_mixed += (1.0/8) *`	115	`area_mixed += (1.0/8) *`
70	`((1.0/tan(a1)) * sqr_length(v2-v0) +`	116	`((1.0/tan(a1)) * sqr_length(v2-v0) +`
71	`(1.0/tan(a2)) * sqr_length(v1-v0));`	117	`(1.0/tan(a2)) * sqr_length(v1-v0));`
72	`}`	118	`}`
73	`else // Voronoi inappropriate`	119	`else // Voronoi inappropriate`
74	`{`	120	`{`
75	`// Add either area(f)/4 or area(f)/2`	121	`// Add either area(f)/4 or area(f)/2`
76	`if(a0>M_PI/2.0)// the angle of f at x is obtuse`	122	`if(a0>M_PI/2.0)// the angle of f at x is obtuse`
77	`area_mixed += f_area/2;`	123	`area_mixed += f_area/2;`
78	`else`	124	`else`
79	`area_mixed += f_area/4;`	125	`area_mixed += f_area/4;`
80	`}`	126	`}`
81	`}`	127	`}`
82	`return area_mixed;`	128	`return area_mixed;`
83	`}`	129	`}`
84		130
85	`double barycentric_area(VertexIter v)`	131	`double barycentric_area(VertexIter v)`
86	`{`	132	`{`
87	`double barea = 0;`	133	`double barea = 0;`
88	`//For each triangle T from the 1-ring neighborhood of x`	134	`//For each triangle T from the 1-ring neighborhood of x`
89	`for(VertexCirculator vc(v); !vc.end(); ++vc)`	135	`for(VertexCirculator vc(v); !vc.end(); ++vc)`
90	`{`	136	`{`
91	`FaceIter f = vc.get_face();`	137	`FaceIter f = vc.get_face();`
92	`barea += area(f)/3.0;`	138	`barea += area(f)/3.0;`
93	`}`	139	`}`
94	`return barea;`	140	`return barea;`
95	`}`	141	`}`
96		142
97	`}`	143	`}`
98		144
99	`void Harmonics::make_laplace_operator()`	145	`void Harmonics::make_laplace_operator()`
100	`{`	146	`{`
101	`Q.Resize(mani.no_vertices(), mani.no_vertices());`	147	`Q.Resize(mani.no_vertices(), mani.no_vertices());`
102		148
103	`for(VertexIter v = mani.vertices_begin(); v != mani.vertices_end(); ++v)`	149	`for(VertexIter v = mani.vertices_begin(); v != mani.vertices_end(); ++v)`
104	`if(!is_boundary(v))`	150	`if(!is_boundary(v))`
105	`{`	151	`{`
106	`int i = v->touched;`	152	`int i = v->touched;`
107	`double area_i = voronoi_area(v);`	153	`double area_i = voronoi_area(v);`
108	`Vec3d vertex(v->pos);`	154	`Vec3d vertex(v->pos);`
109	`Vec3d curv_normal(0);`	155	`Vec3d curv_normal(0);`
110	`double a_sum = 0;`	156	`double a_sum = 0;`
111	`for(VertexCirculator vc(v); !vc.end(); ++vc)`	157	`for(VertexCirculator vc(v); !vc.end(); ++vc)`
112	`{`	158	`{`
113	`int j = vc.get_vertex()->touched;`	159	`int j = vc.get_vertex()->touched;`
114	`double area_j = voronoi_area(vc.get_vertex());`	160	`double area_j = voronoi_area(vc.get_vertex());`
115	`HalfEdgeIter h = vc.get_halfedge();`	161	`HalfEdgeIter h = vc.get_halfedge();`
116	`Vec3d nbr(h->vert->pos);`	162	`Vec3d nbr(h->vert->pos);`
117	`Vec3d left(h->next->vert->pos);`	163	`Vec3d left(h->next->vert->pos);`
118	`Vec3d right(h->opp->prev->opp->vert->pos);`	164	`Vec3d right(h->opp->prev->opp->vert->pos);`
119		165
120	`double d_left = dot(normalize(nbr-left),`	166	`double d_left = dot(normalize(nbr-left),`
121	`normalize(vertex-left));`	167	`normalize(vertex-left));`
122	`double d_right = dot(normalize(nbr-right),`	168	`double d_right = dot(normalize(nbr-right),`
123	`normalize(vertex-right));`	169	`normalize(vertex-right));`
124	`double a_left = acos(min(1.0, max(-1.0, d_left)));`	170	`double a_left = acos(min(1.0, max(-1.0, d_left)));`
125	`double a_right = acos(min(1.0, max(-1.0, d_right)));`	171	`double a_right = acos(min(1.0, max(-1.0, d_right)));`
126		172
127	`double w = 1.0/tan(a_left) + 1.0/tan(a_right);`	173	`double w = 1.0/tan(a_left) + 1.0/tan(a_right);`
128		174
129	`Q[i][j] = -w/sqrt(area_i*area_j);`	175	`Q[i][j] = -w/sqrt(area_i*area_j);`
130	`//Q[i][j] = -1;`	176	`//Q[i][j] = -1;`
131	`a_sum += Q[i][j];`	177	`a_sum += Q[i][j];`
132	`}`	178	`}`
133	`Q[i][i] = -a_sum;`	179	`Q[i][i] = -a_sum;`
134	`}`	180	`}`
135	`EigenSolutionsSym(Q,V);`	181	`EigenSolutionsSym(Q,V);`
136		182
137	`}`	183	`}`
138		184
139		185
140	`Harmonics::Harmonics(Manifold& _mani):mani(_mani)`	186	`Harmonics::Harmonics(Manifold& _mani):mani(_mani)`
141	`{`	187	`{`
142	`assert(is_initialized);`	188	`assert(is_initialized);`
143		189
144	`triangulate(mani);`	190	`triangulate(mani);`
145	`mani.enumerate_vertices();`	191	`mani.enumerate_vertices();`
146	`maximum_eigenvalue = mani.no_vertices()-1;`	192	`maximum_eigenvalue = mani.no_vertices()-1;`
147	`make_laplace_operator();`	193	`make_laplace_operator();`
148		194
149	`proj.resize(maximum_eigenvalue);`	195	`proj.resize(maximum_eigenvalue);`
150	`max_eig_values.resize(maximum_eigenvalue, 1e-10);`	196	`max_eig_values.resize(maximum_eigenvalue, 1e-10);`
151	`for(int es=0; es<maximum_eigenvalue; ++es)`	197	`for(int es=0; es<maximum_eigenvalue; ++es)`
152	`{`	198	`{`
153	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`	199	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`
154	`{`	200	`{`
155	`int i= v->touched;`	201	`int i= v->touched;`
156	`proj[es] += Vec3d(v->pos) * Q[es][i];`	202	`proj[es] += Vec3d(v->pos) * Q[es][i];`
157	`max_eig_values[es] = max(max_eig_values[es], static_cast<float>(abs(Q[es][i])));`	203	`max_eig_values[es] = max(max_eig_values[es], static_cast<float>(abs(Q[es][i])));`
158	`}`	204	`}`
159	`}`	205	`}`
160	`}`	206	`}`
161		207
162	`void Harmonics::add_frequency(int es, float scale)`	208	`void Harmonics::add_frequency(int es, float scale)`
163	`{`	209	`{`
164	`if(es<maximum_eigenvalue)`	210	`if(es<maximum_eigenvalue)`
165	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`	211	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`
166	`{`	212	`{`
167	`Vec3f& p = v->pos;`	213	`Vec3f& p = v->pos;`
168	`v->pos += Vec3f(proj[es] * Q[es][v->touched] * scale);`	214	`v->pos += Vec3f(proj[es] * Q[es][v->touched] * scale);`
169	`}`	215	`}`
170		216
171	`}`	217	`}`
172		218
173	`void Harmonics::reset_shape()`	219	`void Harmonics::reset_shape()`
174	`{`	220	`{`
175	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`	221	`for(VertexIter v=mani.vertices_begin(); v != mani.vertices_end(); ++v)`
176	`v->pos = Vec3f(0);`	222	`v->pos = Vec3f(0);`
177	`}`	223	`}`
178	`void Harmonics::partial_reconstruct(int E0, int E1, float scale)`	224	`void Harmonics::partial_reconstruct(int E0, int E1, float scale)`
179	`{`	225	`{`
180	`for(int es=E0;es<=E1;++es)`	226	`for(int es=E0;es<=E1;++es)`
181	`add_frequency(es, scale);`	227	`add_frequency(es, scale);`
182	`}`	228	`}`
183		229
184		230
185	`template<typename T>`	231	`template<typename T>`
186	`T& get_CVar_ref(const std::string& s)`	232	`T& get_CVar_ref(const std::string& s)`
187	`{`	233	`{`
188	`return reinterpret_cast<T> (GetCVarData(s));`	234	`return reinterpret_cast<T> (GetCVarData(s));`
189	`}`	235	`}`
190		236
191	`void Harmonics::parse_key(unsigned char key)`	237	`void Harmonics::parse_key(unsigned char key)`
192	`{`	238	`{`
193	`int& display_eigenvalue = get_CVar_ref<int>("display.harmonics.eigenvalue");`	239	`int& display_eigenvalue = get_CVar_ref<int>("display.harmonics.eigenvalue");`
194	`int& display_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");`	240	`int& display_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");`
195	`int& display_highlight = get_CVar_ref<int>("display.harmonics.highlight");`	241	`int& display_highlight = get_CVar_ref<int>("display.harmonics.highlight");`
196	`switch(key) {`	242	`switch(key) {`
197	`case '+':`	243	`case '+':`
198	`display_eigenvalue = min(display_eigenvalue+1, maximum_eigenvalue);`	244	`display_eigenvalue = min(display_eigenvalue+1, maximum_eigenvalue);`
199	`break;`	245	`break;`
200	`case '-':`	246	`case '-':`
201	`display_eigenvalue = max(display_eigenvalue-1, 0);`	247	`display_eigenvalue = max(display_eigenvalue-1, 0);`
202	`break;`	248	`break;`
203	`case 'd':`	249	`case 'd':`
204	`display_diffuse = !display_diffuse;`	250	`display_diffuse = !display_diffuse;`
205	`break;`	251	`break;`
206	`case 'h':`	252	`case 'h':`
207	`display_highlight = !display_highlight;`	253	`display_highlight = !display_highlight;`
208	`break;`	254	`break;`
209	`}`	255	`}`
210		256
211	`}`	257	`}`
212		258
213	`void Harmonics::draw()`	259	`void Harmonics::draw()`
214	`{`	260	`{`
215	`int& display_eigen = get_CVar_ref<int>("display.harmonics.eigenvalue");`	261	`int& display_eigen = get_CVar_ref<int>("display.harmonics.eigenvalue");`
216	`int& display_eigen2 = get_CVar_ref<int>("display.harmonics.eigenvalue");`	262	`int& display_eigen2 = get_CVar_ref<int>("display.harmonics.eigenvalue");`
217	`int& do_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");`	263	`int& do_diffuse = get_CVar_ref<int>("display.harmonics.diffuse");`
218	`int& do_highlight = get_CVar_ref<int>("display.harmonics.highlight");`	264	`int& do_highlight = get_CVar_ref<int>("display.harmonics.highlight");`
219		265
220		266
221	`glUseProgram(prog_P0);`	267	`glUseProgram(prog_P0);`
222	`glUniform1f(glGetUniformLocation(prog_P0,"eig_max"),max_eig_values[display_eigen]);`	268	`glUniform1f(glGetUniformLocation(prog_P0,"eig_max"),max_eig_values[display_eigen]);`
223	`glUniform1f(glGetUniformLocation(prog_P0,"eig_max2"),max_eig_values[display_eigen2]);`	269	`glUniform1f(glGetUniformLocation(prog_P0,"eig_max2"),max_eig_values[display_eigen2]);`
224	`glUniform1i(glGetUniformLocation(prog_P0,"do_diffuse"),do_diffuse);`	270	`glUniform1i(glGetUniformLocation(prog_P0,"do_diffuse"),do_diffuse);`
225	`glUniform1i(glGetUniformLocation(prog_P0,"do_highlight"),do_highlight);`	271	`glUniform1i(glGetUniformLocation(prog_P0,"do_highlight"),do_highlight);`
226	`GLuint attrib = glGetAttribLocationARB(prog_P0, "eigenvalue");`	272	`GLuint attrib = glGetAttribLocationARB(prog_P0, "eigenvalue");`
227	`GLuint attrib2 = glGetAttribLocationARB(prog_P0, "eigenvalue2");`	273	`GLuint attrib2 = glGetAttribLocationARB(prog_P0, "eigenvalue2");`
228		274
229	`glFrontFace(GL_CW);`	275	`glFrontFace(GL_CW);`
230	`for(FaceIter f=mani.faces_begin(); f != mani.faces_end(); ++f)`	276	`for(FaceIter f=mani.faces_begin(); f != mani.faces_end(); ++f)`
231	`{`	277	`{`
232	`FaceCirculator fc(f);`	278	`FaceCirculator fc(f);`
233	`glBegin(GL_TRIANGLES);`	279	`glBegin(GL_TRIANGLES);`
234	`while(!fc.end())`	280	`while(!fc.end())`
235	`{`	281	`{`
236	`int i = fc.get_vertex()->touched;`	282	`int i = fc.get_vertex()->touched;`
237	`glVertexAttrib1f(attrib,Q[display_eigen][i]);`	283	`glVertexAttrib1f(attrib,Q[display_eigen][i]);`
238	`glVertexAttrib1f(attrib2,Q[display_eigen2][i]);`	284	`glVertexAttrib1f(attrib2,Q[display_eigen2][i]);`
239	`glNormal3fv(normal(fc.get_vertex()).get());`	285	`glNormal3fv(normal(fc.get_vertex()).get());`
240	`glVertex3fv(fc.get_vertex()->pos.get());`	286	`glVertex3fv(fc.get_vertex()->pos.get());`
241	`++fc;`	287	`++fc;`
242	`}`	288	`}`
243	`glEnd();`	289	`glEnd();`
244	`}`	290	`}`
245	`glFrontFace(GL_CCW);`	291	`glFrontFace(GL_CCW);`
246	`glUseProgram(0);`	292	`glUseProgram(0);`
247	`}`	293	`}`
248		294
249	`void Harmonics::init()`	295	`void Harmonics::init()`
250	`{`	296	`{`
251	`is_initialized = true;`	297	`is_initialized = true;`
252	`string shader_path = "/Users/jab/GEL/apps/MeshEdit/";`	298	`string shader_path = "/Users/jab/GEL/apps/MeshEdit/";`
253	`GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, shader_path, "tri.vert");`	299	`GLuint vs = create_glsl_shader(GL_VERTEX_SHADER, vss);`
254	`GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, shader_path, "tri.frag");`	300	`GLuint fs = create_glsl_shader(GL_FRAGMENT_SHADER, fss);`
255		301
256	`// Create the program`	302	`// Create the program`
257	`prog_P0 = glCreateProgram();`	303	`prog_P0 = glCreateProgram();`
258		304
259	`// Attach all shaders`	305	`// Attach all shaders`
260	`if(vs) glAttachShader(prog_P0, vs);`	306	`if(vs) glAttachShader(prog_P0, vs);`
261	`if(fs) glAttachShader(prog_P0, fs);`	307	`if(fs) glAttachShader(prog_P0, fs);`
262		308
263	`// Link the program object and print out the info log`	309	`// Link the program object and print out the info log`
264	`glLinkProgram(prog_P0);`	310	`glLinkProgram(prog_P0);`
265	`print_glsl_program_log(prog_P0);`	311	`print_glsl_program_log(prog_P0);`
266		312
267	`// Install program object as part of current state`	313	`// Install program object as part of current state`
268	`glUseProgram(0);`	314	`glUseProgram(0);`
269		315
270	`static CVar<int> display_eigen("display.harmonics.eigenvalue",0);`	316	`static CVar<int> display_eigen("display.harmonics.eigenvalue",0);`
271	`static CVar<int> display_eigen2("display.harmonics.eigenvalue2",0);`	317	`static CVar<int> display_eigen2("display.harmonics.eigenvalue2",0);`
272	`static CVar<int> do_highlight("display.harmonics.highlight",1);`	318	`static CVar<int> do_highlight("display.harmonics.highlight",1);`
273	`static CVar<int> do_diffuse("display.harmonics.diffuse",1);`	319	`static CVar<int> do_diffuse("display.harmonics.diffuse",1);`
274		320
275	`}`	321	`}`
276		322

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(root)/trunk/apps/MeshEdit/harmonics.cpp – Rev 394 → 397