WebSVN – gelsvn – Diff – /trunk/apps/Raytracer/raytrace.cpp/


#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
 
#include "GL/glut.h"
 
#include "CGLA/Vec2f.h"
#include "CGLA/Vec3i.h"
#include "CGLA/Vec3f.h"
#include "CGLA/Vec3d.h"
#include "CGLA/Mat4x4f.h"
 
#include "HMesh/build_manifold.h"
#include "Geometry/TriMesh.h"
#include "Geometry/obj_load.h"
#include "Geometry/Ray.h"
#include "Geometry/BSPTree.h"
#include "GLGraphics/GLViewController.h"
 
#include "Geometry/build_bbtree.h"
#include "Geometry/AABox.h"
#include "Geometry/OBox.h"
#include "Util/Timer.h"
#include "Camera.h"
 
// #define USE_BSP
 
using namespace std;
using namespace CGLA;
using namespace Geometry;
using namespace HMesh;
using namespace GLGraphics;
 
/*
 * TODO: 
 * - BSP find out why BSP tree is suboptimal for the bunny mesh.
 * - BBOX remove HMesh dependency - that is crazy.
 * - BBox visit child nodes in order of how far away the intersection point on
 *        the bbox is. Closest nodes visited first. Cull nodes farther than
 *        an actual intersection point.
 * - BBox Smooth interpolation of triangle normals. Straightforward.
 */
					
 
namespace
{
  const int MAX_OBJECTS = 4;   // Maximum number of triangles in a BSP tree node
  const int MAX_LEVEL = 20;    // Maximum number of BSP tree subdivisions
 
  const unsigned int TEX_SIZE = 512;
 
  bool raytrace = false;
  bool done = false;
  bool shadow = false;
 
  unsigned int winx = TEX_SIZE;     // Screen width
  unsigned int winy = TEX_SIZE;     // Screen height
 
  unsigned int PIXEL_SUBDIVS = 1;
 
  int mouse_state = GLUT_UP;
  int mouse_button = 0;
  int spin_timer = 20;
 
  GLViewController *vctrl;
 
  TriMesh mesh;
  vector<TriMesh*> mesh_vector(1, &mesh);
  vector<Mat4x4f> transforms(1, identity_Mat4x4f());
 
  double light_pow = 1.0;
  Vec3f light_dir = normalize(Vec3f(1.0, 1.0, 1.0));
  Vec3d background(0.8, 0.9, 1.0);
 
  BSPTree tree;
  Camera* cam;
 
  Vec3f image[TEX_SIZE][TEX_SIZE];
  unsigned int image_tex;
 
  // Function to generate a random number between 0 and 1.
  // rand() returns a random number ranging from 0 to RAND_MAX.
  inline double my_random()
  {
    return rand()/static_cast<double>(RAND_MAX);
  }
		
  AABBTree bb_tree;		
 
 
}
 
void spin(int x);
 
//////////////////////////////////////////////////////////////
//      I N I T I A L I Z A T I O N               
//////////////////////////////////////////////////////////////
 
void init_texture(unsigned int& tex)
{
  glGenTextures(1, &tex);
 
  glBindTexture(GL_TEXTURE_2D, tex);
 
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 
  // load the texture image
  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 
	       TEX_SIZE, TEX_SIZE,
	       0, GL_RGB, GL_FLOAT, image[0][0].get());
}
 
void initRaytracer()
{
  Vec3f c;
  float r;
  mesh.get_bsphere(c, r);
  r *= 1.5;
 
  // Initialize track ball
  vctrl = new GLViewController(winx, winy, c, r);
 
  // Initialize corresponding camera
  cam = new Camera(c - Vec3f(r), 
		   c, 
		   Vec3f(0.0f, 1.0f, 0.0f),
		   1.0f);
 
#ifdef USE_BDL
   cout << "Constructing BSP tree..." << endl;
   tree.init(mesh_vector, transforms, MAX_OBJECTS, MAX_LEVEL);
   tree.build();
#else
	// AABB TREE
	Manifold m;
	vector<int> faces(mesh.geometry.no_faces(), 3);
	cout << "Creating manifold" << endl;
	build_manifold(m, 
				   mesh.geometry.no_vertices(), 
				   &mesh.geometry.vertex(0), 
				   faces.size(), &faces[0], 
				   reinterpret_cast<const int*>(&mesh.geometry.face(0)));
	cout << "Building tree" << endl;
	build_AABBTree(m, bb_tree);
#endif
}
 
void initGL()
{
  glShadeModel(GL_SMOOTH); 
  glDisable(GL_CULL_FACE);
  glFrontFace(GL_CCW);
 
  glClearColor(1.0, 1.0, 1.0, 1.0);
  glColor3f(0.0, 0.0, 0.0);
}
 
 
//////////////////////////////////////////////////////////////
//      S H A D E   F U N C T I O N S
//////////////////////////////////////////////////////////////
 
double shadow_shade(Ray& r)
{
  r.compute_position();
  Ray shadow(r.hit_pos, light_dir);
  double s = tree.intersect(shadow) ? 0.0 : 1.0;
 
  r.compute_normal();
  return s*light_pow*dot(r.hit_normal, light_dir);
}
 
double lambertian_shade(Ray& r)
{
#ifdef USE_BDL
		r.compute_normal();
#endif
  return light_pow*dot(r.hit_normal, light_dir);
}
 
double (*shade_ray[2])(Ray&) = { lambertian_shade,
				 shadow_shade      };
 
//////////////////////////////////////////////////////////////
//      D R A W   F U N C T I O N S
//////////////////////////////////////////////////////////////
 
/*
void enable_textures(TriMesh& tm)
{
  for(unsigned int i=0;i<tm.materials.size(); ++i)
  {
    Material& mat = tm.materials[i];
    if(mat.tex_name != "")
    {
      string name = mat.tex_path + mat.tex_name;
      
      GLuint tex_id;
      if(load_image_into_texture(name, tex_id))
	mat.tex_id = tex_id;
    }
  }
}
*/
 
void set_perspective_proj()
{
  glMatrixMode(GL_PROJECTION);	 
  glLoadIdentity();            
 
  gluPerspective(64.0, 1.0, 0.1, 1000.0);
 
  glMatrixMode(GL_MODELVIEW);
}
 
void set_ortho_proj()
{
  glMatrixMode(GL_PROJECTION);	 
  glLoadIdentity();             
    
  glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
 
  glMatrixMode(GL_MODELVIEW);  
}
 
void draw_texture(unsigned int tex)
{
  static GLfloat verts[] = { 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 1.0, 1.0 };
 
  glColor4f(1.0, 1.0, 1.0, 1.0);
 
  glBindTexture(GL_TEXTURE_2D, tex);
  glEnable(GL_TEXTURE_2D);
 
  glEnableClientState(GL_VERTEX_ARRAY);
  glEnableClientState(GL_TEXTURE_COORD_ARRAY);
  
  glVertexPointer(2, GL_FLOAT, 0, verts);
  glTexCoordPointer(2, GL_FLOAT, 0, verts);
 
  glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 
  glDisableClientState(GL_VERTEX_ARRAY);
  glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 
  glDisable(GL_TEXTURE_2D);
}
 
void drawOBJ()
{
  static bool washere = false;
  static unsigned int disp_list;
 
  if(!washere)
  {
    disp_list = glGenLists(1);
    glNewList(disp_list, GL_COMPILE);
 
    glBegin(GL_TRIANGLES);
      for(int i = 0; i < mesh.geometry.no_faces(); ++i)
      {
	Vec3i n_face = mesh.normals.face(i);
	Vec3i g_face = mesh.geometry.face(i);
	for(int j=0;j<3;j++)
	{
	  double shade = 0.5;
 
	  if(n_face != Geometry::NULL_FACE)
	  {
	    Vec3f norm = normalize(mesh.normals.vertex(n_face[j]));
	    glNormal3fv(norm.get());
	    shade = light_pow*dot(norm, light_dir);
	  }
 
	  glColor3d(shade, shade, shade);
	  Vec3f vert = mesh.geometry.vertex(g_face[j]);	  
	  glVertex3fv(vert.get());
	}
      }
    glEnd();
 
    glEndList();
    washere = true;
  }
  glCallList(disp_list);
}
 
 
//////////////////////////////////////////////////////////////
//      G L U T   C A L L B A C K   F U N C T I O N S                 
//////////////////////////////////////////////////////////////
 
void display()
{
  static bool first = true;
 
  if(first)
  {
    first = false;
    glutTimerFunc(spin_timer, spin, 0);
  }
 
  Vec3f eye, focus, up;
	vctrl->get_view_param(eye, focus, up);
	cam->set(eye, focus, up, cam->get_focal_dist());
	
  if(raytrace)
  {
    raytrace = false;
    
    cout << "Raytracing";
    float win_to_vp = 1.0f/static_cast<float>(TEX_SIZE);
    float lowerleft = 0.5 + win_to_vp*0.5;
    float step = win_to_vp/static_cast<float>(PIXEL_SUBDIVS);
    
    vector<Vec2f> jitter(PIXEL_SUBDIVS*PIXEL_SUBDIVS); 
    for(unsigned int i = 0; i < PIXEL_SUBDIVS; ++i)
      for(unsigned int j = 0; j < PIXEL_SUBDIVS; ++j)
      {
	    jitter[i*PIXEL_SUBDIVS + j][0] = (my_random() + (j%PIXEL_SUBDIVS))*step; 
	    jitter[i*PIXEL_SUBDIVS + j][1] = (my_random() + (i%PIXEL_SUBDIVS))*step; 
      }
 
	Util::Timer tim;
	tim.start();
    for(unsigned int i = 0; i < TEX_SIZE; ++i)
    {
	  for(unsigned int j = 0; j < TEX_SIZE; ++j)
	  {
		Vec3d sum(0.0f);
		Vec2f vp_pos(j*win_to_vp - lowerleft, i*win_to_vp - lowerleft);
	
		for(unsigned int ky = 0; ky < PIXEL_SUBDIVS; ++ky)
		  for(unsigned int kx = 0; kx < PIXEL_SUBDIVS; ++kx)
		  {
			Ray r = cam->get_ray(vp_pos + jitter[ky*PIXEL_SUBDIVS + kx]);
 
#ifdef USE_BDL
			if(tree.intersect(r))
			  sum += Vec3d(shade_ray[shadow](r));
			else
			  sum += background;
#else
			float t = FLT_MAX;
			bb_tree.intersect(r);
			if(r.has_hit)
			  sum += Vec3d(shade_ray[0](r));
			else 
			  sum += background;
#endif		
		  }
 
		  image[i][j] = Vec3f(sum/static_cast<double>(PIXEL_SUBDIVS*PIXEL_SUBDIVS));
	  }
	  if(((i + 1) % 50) == 0) cerr << ".";
	}
	cout << " - " << tim.get_secs() << " secs " << endl;
    cout << endl;
 
    init_texture(image_tex);
 
    done = true;
  }
 
  if(done)
  {
    set_ortho_proj();
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();
 
    draw_texture(image_tex);
  }
  else
  {
    glEnable(GL_DEPTH_TEST);
 
    cam->glSetPerspective(winx, winy);
 
 
    glClearColor(background[0], background[1], background[2], 1.0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();
 
	vctrl->set_gl_modelview();
    
    glColor3f(0.5, 0.5, 0.5);
    drawOBJ();
 
    glDisable(GL_DEPTH_TEST);
  }
 
  glutSwapBuffers();  
}
 
void reshape(int w, int h)
{
  winx = w; winy = h;
 
  vctrl->reshape(winx, winy);
 
  glViewport(0, 0, winx, winy);
 
}
 
void keyboard(unsigned char key, int x, int y)
{
  switch(key)
  {
  case '+':
    ++PIXEL_SUBDIVS;
    cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;
    break;
  case '-':
    if(PIXEL_SUBDIVS > 1)
      --PIXEL_SUBDIVS;
    cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;
    break;
  case 'r':
    if(done) done = false;
    else raytrace = true;
    break;
  case 's':
    shadow = !shadow;
    cout << "Shadow " << (shadow ? "on." : "off.") << endl;
    break;
  case 27:
    delete vctrl;
    delete cam;
    exit(0);
  }
}
 
void mouse(int btn, int state, int x, int y)
{
  if(state == GLUT_DOWN) 
  {
    if(btn == GLUT_LEFT_BUTTON) 
      vctrl->grab_ball(ROTATE_ACTION, Vec2i(x, y));
    else if(btn == GLUT_MIDDLE_BUTTON) 
      vctrl->grab_ball(ZOOM_ACTION, Vec2i(x, y));
    else if(btn == GLUT_RIGHT_BUTTON) 
      vctrl->grab_ball(PAN_ACTION, Vec2i(x, y));
  }
  else if(state == GLUT_UP)
			vctrl->release_ball();
 
  mouse_state = state;
  mouse_button = btn;
 
  glutPostRedisplay();
}
 
void move(int x, int y)
{
    vctrl->roll_ball(Vec2i(x, y));
 
  glutPostRedisplay();
}
 
void spin(int x)
{
  vctrl->try_spin();
  glutTimerFunc(spin_timer, spin, 0);  
  glutPostRedisplay();
}
 
 
//////////////////////////////////////////////////////////////
//                        M A I N
//////////////////////////////////////////////////////////////
 
int main(int argc, char** argv)
{
#ifdef __BORLANDC__
  _control87(MCW_EM, MCW_EM);  // Borland C++ will crash OpenGL if this
                               // magic line is not inserted
#endif
 
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
  glutInitWindowSize(winx, winy);
  glutCreateWindow("Press 'r' to raytrace");
  glutDisplayFunc(display);
  glutReshapeFunc(reshape);
  glutKeyboardFunc(keyboard);
  glutMouseFunc(mouse);
  glutMotionFunc(move);
 
  // LOAD OBJ
  string filename;
  if(argc > 1)
  {
    filename = argv[1];
    cout << "Loading " << filename << endl;
 
    obj_load(filename, mesh);
    //if(!mesh.has_normals())
    //{
      cout << "Computing normals" << endl;
      mesh.compute_normals();
    //}
 
    cout << "No. of triangles: " << mesh.geometry.no_faces() << endl;
  }
  else
  {
    obj_load("../../data/dolphins.obj", mesh);
 
	cout << "Computing normals" << endl;
    mesh.compute_normals();
 
	//cout << "Usage: raytrace any_object.obj";
    //exit(0);
  }
 
  initRaytracer();
  initGL();    
 
  glutMainLoop();
 
  return 0;
}
 
 

Rev 309	Rev 310
1	`#include <iostream>`	1	`#include <iostream>`
2	`#include <vector>`	2	`#include <vector>`
3	`#include <algorithm>`	3	`#include <algorithm>`
4	`#include <cmath>`	4	`#include <cmath>`
5		5
6	`#include "GL/glut.h"`	6	`#include "GL/glut.h"`
7		7
8	`#include "CGLA/Vec2f.h"`	8	`#include "CGLA/Vec2f.h"`
9	`#include "CGLA/Vec3i.h"`	9	`#include "CGLA/Vec3i.h"`
10	`#include "CGLA/Vec3f.h"`	10	`#include "CGLA/Vec3f.h"`
11	`#include "CGLA/Vec3d.h"`	11	`#include "CGLA/Vec3d.h"`
12	`#include "CGLA/Mat4x4f.h"`	12	`#include "CGLA/Mat4x4f.h"`
13		13
14	`#include "HMesh/build_manifold.h"`	14	`#include "HMesh/build_manifold.h"`
15	`#include "Geometry/TriMesh.h"`	15	`#include "Geometry/TriMesh.h"`
16	`#include "Geometry/obj_load.h"`	16	`#include "Geometry/obj_load.h"`
17	`#include "Geometry/Ray.h"`	17	`#include "Geometry/Ray.h"`
18	`#include "Geometry/BSPTree.h"`	18	`#include "Geometry/BSPTree.h"`
19	`#include "GLGraphics/GLViewController.h"`	19	`#include "GLGraphics/GLViewController.h"`
20		20
21	`#include "Geometry/build_bbtree.h"`	21	`#include "Geometry/build_bbtree.h"`
22	`#include "Geometry/AABox.h"`	22	`#include "Geometry/AABox.h"`
23	`#include "Geometry/OBox.h"`	23	`#include "Geometry/OBox.h"`
24	`#include "Util/Timer.h"`	24	`#include "Util/Timer.h"`
25	`#include "Camera.h"`	25	`#include "Camera.h"`
26		26
27	`//#define USE_BDL`	27	`// #define USE_BSP`
28		28
29	`using namespace std;`	29	`using namespace std;`
30	`using namespace CGLA;`	30	`using namespace CGLA;`
31	`using namespace Geometry;`	31	`using namespace Geometry;`
32	`using namespace HMesh;`	32	`using namespace HMesh;`
33	`using namespace GLGraphics;`	33	`using namespace GLGraphics;`
34		34
35	`/*`	35	`/*`
36	`* TODO:`	36	`* TODO:`
37	`* - BSP fix bug preventing bunny model from loading.`	37	`* - BSP find out why BSP tree is suboptimal for the bunny mesh.`
38	`* - BBOX remove HMesh dependency - that is crazy.`	38	`* - BBOX remove HMesh dependency - that is crazy.`
39	`* - BBox visit child nodes in order of how far away the intersection point on`	39	`* - BBox visit child nodes in order of how far away the intersection point on`
40	`* the bbox is. Closest nodes visited first. Cull nodes farther than`	40	`* the bbox is. Closest nodes visited first. Cull nodes farther than`
41	`* an actual intersection point.`	41	`* an actual intersection point.`
42	`* - BBox Smooth interpolation of triangle normals. Straightforward.`	42	`* - BBox Smooth interpolation of triangle normals. Straightforward.`
43	`*/`	43	`*/`
44		44
45		45
46	`namespace`	46	`namespace`
47	`{`	47	`{`
48	`const int MAX_OBJECTS = 2; // Maximum number of triangles in a BSP tree node`	48	`const int MAX_OBJECTS = 4; // Maximum number of triangles in a BSP tree node`
49	`const int MAX_LEVEL = 20; // Maximum number of BSP tree subdivisions`	49	`const int MAX_LEVEL = 20; // Maximum number of BSP tree subdivisions`
50		50
51	`const unsigned int TEX_SIZE = 512;`	51	`const unsigned int TEX_SIZE = 512;`
52		52
53	`bool raytrace = false;`	53	`bool raytrace = false;`
54	`bool done = false;`	54	`bool done = false;`
55	`bool shadow = false;`	55	`bool shadow = false;`
56		56
57	`unsigned int winx = TEX_SIZE; // Screen width`	57	`unsigned int winx = TEX_SIZE; // Screen width`
58	`unsigned int winy = TEX_SIZE; // Screen height`	58	`unsigned int winy = TEX_SIZE; // Screen height`
59		59
60	`unsigned int PIXEL_SUBDIVS = 1;`	60	`unsigned int PIXEL_SUBDIVS = 1;`
61		61
62	`int mouse_state = GLUT_UP;`	62	`int mouse_state = GLUT_UP;`
63	`int mouse_button = 0;`	63	`int mouse_button = 0;`
64	`int spin_timer = 20;`	64	`int spin_timer = 20;`
65		65
66	`GLViewController *vctrl;`	66	`GLViewController *vctrl;`
67		67
68	`TriMesh mesh;`	68	`TriMesh mesh;`
69	`vector<TriMesh*> mesh_vector(1, &mesh);`	69	`vector<TriMesh*> mesh_vector(1, &mesh);`
70	`vector<Mat4x4f> transforms(1, identity_Mat4x4f());`	70	`vector<Mat4x4f> transforms(1, identity_Mat4x4f());`
71		71
72	`double light_pow = 1.0;`	72	`double light_pow = 1.0;`
73	`Vec3f light_dir = normalize(Vec3f(1.0, 1.0, 1.0));`	73	`Vec3f light_dir = normalize(Vec3f(1.0, 1.0, 1.0));`
74	`Vec3d background(0.8, 0.9, 1.0);`	74	`Vec3d background(0.8, 0.9, 1.0);`
75		75
76	`BSPTree tree;`	76	`BSPTree tree;`
77	`Camera* cam;`	77	`Camera* cam;`
78		78
79	`Vec3f image[TEX_SIZE][TEX_SIZE];`	79	`Vec3f image[TEX_SIZE][TEX_SIZE];`
80	`unsigned int image_tex;`	80	`unsigned int image_tex;`
81		81
82	`// Function to generate a random number between 0 and 1.`	82	`// Function to generate a random number between 0 and 1.`
83	`// rand() returns a random number ranging from 0 to RAND_MAX.`	83	`// rand() returns a random number ranging from 0 to RAND_MAX.`
84	`inline double my_random()`	84	`inline double my_random()`
85	`{`	85	`{`
86	`return rand()/static_cast<double>(RAND_MAX);`	86	`return rand()/static_cast<double>(RAND_MAX);`
87	`}`	87	`}`
88		88
89	`AABBTree bb_tree;`	89	`AABBTree bb_tree;`
90		-
91		-
92	`}`	90	`}`
93		91
94	`void spin(int x);`	92	`void spin(int x);`
95		93
96	`//////////////////////////////////////////////////////////////`	94	`//////////////////////////////////////////////////////////////`
97	`// I N I T I A L I Z A T I O N`	95	`// I N I T I A L I Z A T I O N`
98	`//////////////////////////////////////////////////////////////`	96	`//////////////////////////////////////////////////////////////`
99		97
100	`void init_texture(unsigned int& tex)`	98	`void init_texture(unsigned int& tex)`
101	`{`	99	`{`
102	`glGenTextures(1, &tex);`	100	`glGenTextures(1, &tex);`
103		101
104	`glBindTexture(GL_TEXTURE_2D, tex);`	102	`glBindTexture(GL_TEXTURE_2D, tex);`
105		103
106	`glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);`	104	`glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);`
107	`glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);`	105	`glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);`
108		106
109	`// load the texture image`	107	`// load the texture image`
110	`glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,`	108	`glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,`
111	`TEX_SIZE, TEX_SIZE,`	109	`TEX_SIZE, TEX_SIZE,`
112	`0, GL_RGB, GL_FLOAT, image[0][0].get());`	110	`0, GL_RGB, GL_FLOAT, image[0][0].get());`
113	`}`	111	`}`
114		112
115	`void initRaytracer()`	113	`void initRaytracer()`
116	`{`	114	`{`
117	`Vec3f c;`	115	`Vec3f c;`
118	`float r;`	116	`float r;`
119	`mesh.get_bsphere(c, r);`	117	`mesh.get_bsphere(c, r);`
120	`r *= 1.5;`	118	`r *= 1.5;`
121		119
122	`// Initialize track ball`	120	`// Initialize track ball`
123	`vctrl = new GLViewController(winx, winy, c, r);`	121	`vctrl = new GLViewController(winx, winy, c, r);`
124		122
125	`// Initialize corresponding camera`	123	`// Initialize corresponding camera`
126	`cam = new Camera(c - Vec3f(r),`	124	`cam = new Camera(c - Vec3f(r),`
127	`c,`	125	`c,`
128	`Vec3f(0.0f, 1.0f, 0.0f),`	126	`Vec3f(0.0f, 1.0f, 0.0f),`
129	`1.0f);`	127	`1.0f);`
130		128
131	`#ifdef USE_BDL`	129	`#ifdef USE_BDL`
132	`cout << "Constructing BSP tree..." << endl;`	130	`cout << "Constructing BSP tree..." << endl;`
133	`tree.init(mesh_vector, transforms, MAX_OBJECTS, MAX_LEVEL);`	131	`tree.init(mesh_vector, transforms, MAX_OBJECTS, MAX_LEVEL);`
134	`tree.build();`	132	`tree.build();`
135	`#else`	133	`#else`
136	`// AABB TREE`	134	`// AABB TREE`
137	`Manifold m;`	135	`Manifold m;`
138	`vector<int> faces(mesh.geometry.no_faces(), 3);`	136	`vector<int> faces(mesh.geometry.no_faces(), 3);`
139	`cout << "Creating manifold" << endl;`	137	`cout << "Creating manifold" << endl;`
140	`build_manifold(m,`	138	`build_manifold(m,`
141	`mesh.geometry.no_vertices(),`	139	`mesh.geometry.no_vertices(),`
142	`&mesh.geometry.vertex(0),`	140	`&mesh.geometry.vertex(0),`
143	`faces.size(), &faces[0],`	141	`faces.size(), &faces[0],`
144	`reinterpret_cast<const int*>(&mesh.geometry.face(0)));`	142	`reinterpret_cast<const int*>(&mesh.geometry.face(0)));`
145	`cout << "Building tree" << endl;`	143	`cout << "Building tree" << endl;`
146	`build_AABBTree(m, bb_tree);`	144	`build_AABBTree(m, bb_tree);`
147	`#endif`	145	`#endif`
148	`}`	146	`}`
149		147
150	`void initGL()`	148	`void initGL()`
151	`{`	149	`{`
152	`glShadeModel(GL_SMOOTH);`	150	`glShadeModel(GL_SMOOTH);`
153	`glDisable(GL_CULL_FACE);`	151	`glDisable(GL_CULL_FACE);`
154	`glFrontFace(GL_CCW);`	152	`glFrontFace(GL_CCW);`
155		153
156	`glClearColor(1.0, 1.0, 1.0, 1.0);`	154	`glClearColor(1.0, 1.0, 1.0, 1.0);`
157	`glColor3f(0.0, 0.0, 0.0);`	155	`glColor3f(0.0, 0.0, 0.0);`
158	`}`	156	`}`
159		157
160		158
161	`//////////////////////////////////////////////////////////////`	159	`//////////////////////////////////////////////////////////////`
162	`// S H A D E F U N C T I O N S`	160	`// S H A D E F U N C T I O N S`
163	`//////////////////////////////////////////////////////////////`	161	`//////////////////////////////////////////////////////////////`
164		162
165	`double shadow_shade(Ray& r)`	163	`double shadow_shade(Ray& r)`
166	`{`	164	`{`
167	`r.compute_position();`	165	`r.compute_position();`
168	`Ray shadow(r.hit_pos, light_dir);`	166	`Ray shadow(r.hit_pos, light_dir);`
169	`double s = tree.intersect(shadow) ? 0.0 : 1.0;`	167	`double s = tree.intersect(shadow) ? 0.0 : 1.0;`
170		168
171	`r.compute_normal();`	169	`r.compute_normal();`
172	`return slight_powdot(r.hit_normal, light_dir);`	170	`return slight_powdot(r.hit_normal, light_dir);`
173	`}`	171	`}`
174		172
175	`double lambertian_shade(Ray& r)`	173	`double lambertian_shade(Ray& r)`
176	`{`	174	`{`
177	`#ifdef USE_BDL`	175	`#ifdef USE_BDL`
178	`r.compute_normal();`	176	`r.compute_normal();`
179	`#endif`	177	`#endif`
180	`return light_pow*dot(r.hit_normal, light_dir);`	178	`return light_pow*dot(r.hit_normal, light_dir);`
181	`}`	179	`}`
182		180
183	`double (*shade_ray[2])(Ray&) = { lambertian_shade,`	181	`double (*shade_ray[2])(Ray&) = { lambertian_shade,`
184	`shadow_shade };`	182	`shadow_shade };`
185		183
186	`//////////////////////////////////////////////////////////////`	184	`//////////////////////////////////////////////////////////////`
187	`// D R A W F U N C T I O N S`	185	`// D R A W F U N C T I O N S`
188	`//////////////////////////////////////////////////////////////`	186	`//////////////////////////////////////////////////////////////`
189		187
190	`/*`	188	`/*`
191	`void enable_textures(TriMesh& tm)`	189	`void enable_textures(TriMesh& tm)`
192	`{`	190	`{`
193	`for(unsigned int i=0;i<tm.materials.size(); ++i)`	191	`for(unsigned int i=0;i<tm.materials.size(); ++i)`
194	`{`	192	`{`
195	`Material& mat = tm.materials[i];`	193	`Material& mat = tm.materials[i];`
196	`if(mat.tex_name != "")`	194	`if(mat.tex_name != "")`
197	`{`	195	`{`
198	`string name = mat.tex_path + mat.tex_name;`	196	`string name = mat.tex_path + mat.tex_name;`
199		197
200	`GLuint tex_id;`	198	`GLuint tex_id;`
201	`if(load_image_into_texture(name, tex_id))`	199	`if(load_image_into_texture(name, tex_id))`
202	`mat.tex_id = tex_id;`	200	`mat.tex_id = tex_id;`
203	`}`	201	`}`
204	`}`	202	`}`
205	`}`	203	`}`
206	`*/`	204	`*/`
207		205
208	`void set_perspective_proj()`	206	`void set_perspective_proj()`
209	`{`	207	`{`
210	`glMatrixMode(GL_PROJECTION);`	208	`glMatrixMode(GL_PROJECTION);`
211	`glLoadIdentity();`	209	`glLoadIdentity();`
212		210
213	`gluPerspective(64.0, 1.0, 0.1, 1000.0);`	211	`gluPerspective(64.0, 1.0, 0.1, 1000.0);`
214		212
215	`glMatrixMode(GL_MODELVIEW);`	213	`glMatrixMode(GL_MODELVIEW);`
216	`}`	214	`}`
217		215
218	`void set_ortho_proj()`	216	`void set_ortho_proj()`
219	`{`	217	`{`
220	`glMatrixMode(GL_PROJECTION);`	218	`glMatrixMode(GL_PROJECTION);`
221	`glLoadIdentity();`	219	`glLoadIdentity();`
222		220
223	`glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);`	221	`glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);`
224		222
225	`glMatrixMode(GL_MODELVIEW);`	223	`glMatrixMode(GL_MODELVIEW);`
226	`}`	224	`}`
227		225
228	`void draw_texture(unsigned int tex)`	226	`void draw_texture(unsigned int tex)`
229	`{`	227	`{`
230	`static GLfloat verts[] = { 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 1.0, 1.0 };`	228	`static GLfloat verts[] = { 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 1.0, 1.0 };`
231		229
232	`glColor4f(1.0, 1.0, 1.0, 1.0);`	230	`glColor4f(1.0, 1.0, 1.0, 1.0);`
233		231
234	`glBindTexture(GL_TEXTURE_2D, tex);`	232	`glBindTexture(GL_TEXTURE_2D, tex);`
235	`glEnable(GL_TEXTURE_2D);`	233	`glEnable(GL_TEXTURE_2D);`
236		234
237	`glEnableClientState(GL_VERTEX_ARRAY);`	235	`glEnableClientState(GL_VERTEX_ARRAY);`
238	`glEnableClientState(GL_TEXTURE_COORD_ARRAY);`	236	`glEnableClientState(GL_TEXTURE_COORD_ARRAY);`
239		237
240	`glVertexPointer(2, GL_FLOAT, 0, verts);`	238	`glVertexPointer(2, GL_FLOAT, 0, verts);`
241	`glTexCoordPointer(2, GL_FLOAT, 0, verts);`	239	`glTexCoordPointer(2, GL_FLOAT, 0, verts);`
242		240
243	`glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);`	241	`glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);`
244		242
245	`glDisableClientState(GL_VERTEX_ARRAY);`	243	`glDisableClientState(GL_VERTEX_ARRAY);`
246	`glDisableClientState(GL_TEXTURE_COORD_ARRAY);`	244	`glDisableClientState(GL_TEXTURE_COORD_ARRAY);`
247		245
248	`glDisable(GL_TEXTURE_2D);`	246	`glDisable(GL_TEXTURE_2D);`
249	`}`	247	`}`
250		248
251	`void drawOBJ()`	249	`void drawOBJ()`
252	`{`	250	`{`
253	`static bool washere = false;`	251	`static bool washere = false;`
254	`static unsigned int disp_list;`	252	`static unsigned int disp_list;`
255		253
256	`if(!washere)`	254	`if(!washere)`
257	`{`	255	`{`
258	`disp_list = glGenLists(1);`	256	`disp_list = glGenLists(1);`
259	`glNewList(disp_list, GL_COMPILE);`	257	`glNewList(disp_list, GL_COMPILE);`
260		258
261	`glBegin(GL_TRIANGLES);`	259	`glBegin(GL_TRIANGLES);`
262	`for(int i = 0; i < mesh.geometry.no_faces(); ++i)`	260	`for(int i = 0; i < mesh.geometry.no_faces(); ++i)`
263	`{`	261	`{`
264	`Vec3i n_face = mesh.normals.face(i);`	262	`Vec3i n_face = mesh.normals.face(i);`
265	`Vec3i g_face = mesh.geometry.face(i);`	263	`Vec3i g_face = mesh.geometry.face(i);`
266	`for(int j=0;j<3;j++)`	264	`for(int j=0;j<3;j++)`
267	`{`	265	`{`
268	`double shade = 0.5;`	266	`double shade = 0.5;`
269		267
270	`if(n_face != Geometry::NULL_FACE)`	268	`if(n_face != Geometry::NULL_FACE)`
271	`{`	269	`{`
272	`Vec3f norm = normalize(mesh.normals.vertex(n_face[j]));`	270	`Vec3f norm = normalize(mesh.normals.vertex(n_face[j]));`
273	`glNormal3fv(norm.get());`	271	`glNormal3fv(norm.get());`
274	`shade = light_pow*dot(norm, light_dir);`	272	`shade = light_pow*dot(norm, light_dir);`
275	`}`	273	`}`
276		274
277	`glColor3d(shade, shade, shade);`	275	`glColor3d(shade, shade, shade);`
278	`Vec3f vert = mesh.geometry.vertex(g_face[j]);`	276	`Vec3f vert = mesh.geometry.vertex(g_face[j]);`
279	`glVertex3fv(vert.get());`	277	`glVertex3fv(vert.get());`
280	`}`	278	`}`
281	`}`	279	`}`
282	`glEnd();`	280	`glEnd();`
283		281
284	`glEndList();`	282	`glEndList();`
285	`washere = true;`	283	`washere = true;`
286	`}`	284	`}`
287	`glCallList(disp_list);`	285	`glCallList(disp_list);`
288	`}`	286	`}`
289		287
290		288
291	`//////////////////////////////////////////////////////////////`	289	`//////////////////////////////////////////////////////////////`
292	`// G L U T C A L L B A C K F U N C T I O N S`	290	`// G L U T C A L L B A C K F U N C T I O N S`
293	`//////////////////////////////////////////////////////////////`	291	`//////////////////////////////////////////////////////////////`
294		292
295	`void display()`	293	`void display()`
296	`{`	294	`{`
297	`static bool first = true;`	295	`static bool first = true;`
298		296
299	`if(first)`	297	`if(first)`
300	`{`	298	`{`
301	`first = false;`	299	`first = false;`
302	`glutTimerFunc(spin_timer, spin, 0);`	300	`glutTimerFunc(spin_timer, spin, 0);`
303	`}`	301	`}`
304		302
305	`Vec3f eye, focus, up;`	303	`Vec3f eye, focus, up;`
306	`vctrl->get_view_param(eye, focus, up);`	304	`vctrl->get_view_param(eye, focus, up);`
307	`cam->set(eye, focus, up, cam->get_focal_dist());`	305	`cam->set(eye, focus, up, cam->get_focal_dist());`
308		306
309	`if(raytrace)`	307	`if(raytrace)`
310	`{`	308	`{`
311	`raytrace = false;`	309	`raytrace = false;`
312		310
313	`cout << "Raytracing";`	311	`cout << "Raytracing";`
314	`float win_to_vp = 1.0f/static_cast<float>(TEX_SIZE);`	312	`float win_to_vp = 1.0f/static_cast<float>(TEX_SIZE);`
315	`float lowerleft = 0.5 + win_to_vp*0.5;`	313	`float lowerleft = 0.5 + win_to_vp*0.5;`
316	`float step = win_to_vp/static_cast<float>(PIXEL_SUBDIVS);`	314	`float step = win_to_vp/static_cast<float>(PIXEL_SUBDIVS);`
317		315
318	`vector<Vec2f> jitter(PIXEL_SUBDIVS*PIXEL_SUBDIVS);`	316	`vector<Vec2f> jitter(PIXEL_SUBDIVS*PIXEL_SUBDIVS);`
319	`for(unsigned int i = 0; i < PIXEL_SUBDIVS; ++i)`	317	`for(unsigned int i = 0; i < PIXEL_SUBDIVS; ++i)`
320	`for(unsigned int j = 0; j < PIXEL_SUBDIVS; ++j)`	318	`for(unsigned int j = 0; j < PIXEL_SUBDIVS; ++j)`
321	`{`	319	`{`
322	`jitter[iPIXEL_SUBDIVS + j][0] = (my_random() + (j%PIXEL_SUBDIVS))step;`	320	`jitter[iPIXEL_SUBDIVS + j][0] = (my_random() + (j%PIXEL_SUBDIVS))step;`
323	`jitter[iPIXEL_SUBDIVS + j][1] = (my_random() + (i%PIXEL_SUBDIVS))step;`	321	`jitter[iPIXEL_SUBDIVS + j][1] = (my_random() + (i%PIXEL_SUBDIVS))step;`
324	`}`	322	`}`
325		323
326	`Util::Timer tim;`	324	`Util::Timer tim;`
327	`tim.start();`	325	`tim.start();`
328	`for(unsigned int i = 0; i < TEX_SIZE; ++i)`	326	`for(unsigned int i = 0; i < TEX_SIZE; ++i)`
329	`{`	327	`{`
330	`for(unsigned int j = 0; j < TEX_SIZE; ++j)`	328	`for(unsigned int j = 0; j < TEX_SIZE; ++j)`
331	`{`	329	`{`
332	`Vec3d sum(0.0f);`	330	`Vec3d sum(0.0f);`
333	`Vec2f vp_pos(jwin_to_vp - lowerleft, iwin_to_vp - lowerleft);`	331	`Vec2f vp_pos(jwin_to_vp - lowerleft, iwin_to_vp - lowerleft);`
334		332
335	`for(unsigned int ky = 0; ky < PIXEL_SUBDIVS; ++ky)`	333	`for(unsigned int ky = 0; ky < PIXEL_SUBDIVS; ++ky)`
336	`for(unsigned int kx = 0; kx < PIXEL_SUBDIVS; ++kx)`	334	`for(unsigned int kx = 0; kx < PIXEL_SUBDIVS; ++kx)`
337	`{`	335	`{`
338	`Ray r = cam->get_ray(vp_pos + jitter[ky*PIXEL_SUBDIVS + kx]);`	336	`Ray r = cam->get_ray(vp_pos + jitter[ky*PIXEL_SUBDIVS + kx]);`
339		337
340	`#ifdef USE_BDL`	338	`#ifdef USE_BDL`
341	`if(tree.intersect(r))`	339	`if(tree.intersect(r))`
342	`sum += Vec3d(shade_ray[shadow](r));`	340	`sum += Vec3d(shade_ray[shadow](r));`
343	`else`	341	`else`
344	`sum += background;`	342	`sum += background;`
345	`#else`	343	`#else`
346	`float t = FLT_MAX;`	344	`float t = FLT_MAX;`
347	`bb_tree.intersect(r);`	345	`bb_tree.intersect(r);`
348	`if(r.has_hit)`	346	`if(r.has_hit)`
349	`sum += Vec3d(shade_ray[0](r));`	347	`sum += Vec3d(shade_ray[0](r));`
-		348	`else`
350	`else sum += background;`	349	`sum += background;`
351	`#endif`	350	`#endif`
352	`}`	351	`}`
353		352
354	`image[i][j] = Vec3f(sum/static_cast<double>(PIXEL_SUBDIVS*PIXEL_SUBDIVS));`	353	`image[i][j] = Vec3f(sum/static_cast<double>(PIXEL_SUBDIVS*PIXEL_SUBDIVS));`
355	`}`	354	`}`
356	`if(((i + 1) % 50) == 0) cerr << ".";`	355	`if(((i + 1) % 50) == 0) cerr << ".";`
357	`}`	356	`}`
358	`cout << " - " << tim.get_secs() << " secs " << endl;`	357	`cout << " - " << tim.get_secs() << " secs " << endl;`
359	`cout << endl;`	358	`cout << endl;`
360		359
361	`init_texture(image_tex);`	360	`init_texture(image_tex);`
362		361
363	`done = true;`	362	`done = true;`
364	`}`	363	`}`
365		364
366	`if(done)`	365	`if(done)`
367	`{`	366	`{`
368	`set_ortho_proj();`	367	`set_ortho_proj();`
369	`glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);`	368	`glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);`
370	`glLoadIdentity();`	369	`glLoadIdentity();`
371		370
372	`draw_texture(image_tex);`	371	`draw_texture(image_tex);`
373	`}`	372	`}`
374	`else`	373	`else`
375	`{`	374	`{`
376	`glEnable(GL_DEPTH_TEST);`	375	`glEnable(GL_DEPTH_TEST);`
377		376
378	`cam->glSetPerspective(winx, winy);`	377	`cam->glSetPerspective(winx, winy);`
379	`vctrl->reset_projection();`	-
380		378
381	`glClearColor(background[0], background[1], background[2], 1.0);`	379	`glClearColor(background[0], background[1], background[2], 1.0);`
382	`glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);`	380	`glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);`
383	`glLoadIdentity();`	381	`glLoadIdentity();`
384		382
385	`vctrl->set_gl_modelview();`	383	`vctrl->set_gl_modelview();`
386		384
387	`glColor3f(0.5, 0.5, 0.5);`	385	`glColor3f(0.5, 0.5, 0.5);`
388	`drawOBJ();`	386	`drawOBJ();`
389		387
390	`glDisable(GL_DEPTH_TEST);`	388	`glDisable(GL_DEPTH_TEST);`
391	`}`	389	`}`
392		390
393	`glutSwapBuffers();`	391	`glutSwapBuffers();`
394	`}`	392	`}`
395		393
396	`void reshape(int w, int h)`	394	`void reshape(int w, int h)`
397	`{`	395	`{`
398	`winx = w; winy = h;`	396	`winx = w; winy = h;`
399		397
400	`vctrl->reshape(winx, winy);`	398	`vctrl->reshape(winx, winy);`
401		399
402	`glViewport(0, 0, winx, winy);`	400	`glViewport(0, 0, winx, winy);`
403	`set_ortho_proj();`	-
404	`}`	401	`}`
405		402
406	`void keyboard(unsigned char key, int x, int y)`	403	`void keyboard(unsigned char key, int x, int y)`
407	`{`	404	`{`
408	`switch(key)`	405	`switch(key)`
409	`{`	406	`{`
410	`case '+':`	407	`case '+':`
411	`++PIXEL_SUBDIVS;`	408	`++PIXEL_SUBDIVS;`
412	`cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;`	409	`cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;`
413	`break;`	410	`break;`
414	`case '-':`	411	`case '-':`
415	`if(PIXEL_SUBDIVS > 1)`	412	`if(PIXEL_SUBDIVS > 1)`
416	`--PIXEL_SUBDIVS;`	413	`--PIXEL_SUBDIVS;`
417	`cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;`	414	`cout << "Rays per pixel: " << PIXEL_SUBDIVS*PIXEL_SUBDIVS << endl;`
418	`break;`	415	`break;`
419	`case 'r':`	416	`case 'r':`
420	`if(done) done = false;`	417	`if(done) done = false;`
421	`else raytrace = true;`	418	`else raytrace = true;`
422	`break;`	419	`break;`
423	`case 's':`	420	`case 's':`
424	`shadow = !shadow;`	421	`shadow = !shadow;`
425	`cout << "Shadow " << (shadow ? "on." : "off.") << endl;`	422	`cout << "Shadow " << (shadow ? "on." : "off.") << endl;`
426	`break;`	423	`break;`
427	`case 27:`	424	`case 27:`
428	`delete vctrl;`	425	`delete vctrl;`
429	`delete cam;`	426	`delete cam;`
430	`exit(0);`	427	`exit(0);`
431	`}`	428	`}`
432	`}`	429	`}`
433		430
434	`void mouse(int btn, int state, int x, int y)`	431	`void mouse(int btn, int state, int x, int y)`
435	`{`	432	`{`
436	`if(state == GLUT_DOWN)`	433	`if(state == GLUT_DOWN)`
437	`{`	434	`{`
438	`if(btn == GLUT_LEFT_BUTTON)`	435	`if(btn == GLUT_LEFT_BUTTON)`
439	`vctrl->grab_ball(ROTATE_ACTION, Vec2i(x, y));`	436	`vctrl->grab_ball(ROTATE_ACTION, Vec2i(x, y));`
440	`else if(btn == GLUT_MIDDLE_BUTTON)`	437	`else if(btn == GLUT_MIDDLE_BUTTON)`
441	`vctrl->grab_ball(ZOOM_ACTION, Vec2i(x, y));`	438	`vctrl->grab_ball(ZOOM_ACTION, Vec2i(x, y));`
442	`else if(btn == GLUT_RIGHT_BUTTON)`	439	`else if(btn == GLUT_RIGHT_BUTTON)`
443	`vctrl->grab_ball(PAN_ACTION, Vec2i(x, y));`	440	`vctrl->grab_ball(PAN_ACTION, Vec2i(x, y));`
444	`}`	441	`}`
445	`else if(state == GLUT_UP)`	442	`else if(state == GLUT_UP)`
446	`vctrl->release_ball();`	443	`vctrl->release_ball();`
447		444
448	`mouse_state = state;`	445	`mouse_state = state;`
449	`mouse_button = btn;`	446	`mouse_button = btn;`
450		447
451	`glutPostRedisplay();`	448	`glutPostRedisplay();`
452	`}`	449	`}`
453		450
454	`void move(int x, int y)`	451	`void move(int x, int y)`
455	`{`	452	`{`
456	`vctrl->roll_ball(Vec2i(x, y));`	453	`vctrl->roll_ball(Vec2i(x, y));`
457		454
458	`glutPostRedisplay();`	455	`glutPostRedisplay();`
459	`}`	456	`}`
460		457
461	`void spin(int x)`	458	`void spin(int x)`
462	`{`	459	`{`
463	`vctrl->try_spin();`	460	`vctrl->try_spin();`
464	`glutTimerFunc(spin_timer, spin, 0);`	461	`glutTimerFunc(spin_timer, spin, 0);`
465	`glutPostRedisplay();`	462	`glutPostRedisplay();`
466	`}`	463	`}`
467		464
468		465
469	`//////////////////////////////////////////////////////////////`	466	`//////////////////////////////////////////////////////////////`
470	`// M A I N`	467	`// M A I N`
471	`//////////////////////////////////////////////////////////////`	468	`//////////////////////////////////////////////////////////////`
472		469
473	`int main(int argc, char** argv)`	470	`int main(int argc, char** argv)`
474	`{`	471	`{`
475	`#ifdef __BORLANDC__`	472	`#ifdef __BORLANDC__`
476	`_control87(MCW_EM, MCW_EM); // Borland C++ will crash OpenGL if this`	473	`_control87(MCW_EM, MCW_EM); // Borland C++ will crash OpenGL if this`
477	`// magic line is not inserted`	474	`// magic line is not inserted`
478	`#endif`	475	`#endif`
479		476
480	`glutInit(&argc, argv);`	477	`glutInit(&argc, argv);`
481	`glutInitDisplayMode(GLUT_RGBA \| GLUT_DOUBLE \| GLUT_DEPTH);`	478	`glutInitDisplayMode(GLUT_RGBA \| GLUT_DOUBLE \| GLUT_DEPTH);`
482	`glutInitWindowSize(winx, winy);`	479	`glutInitWindowSize(winx, winy);`
483	`glutCreateWindow("Press 'r' to raytrace");`	480	`glutCreateWindow("Press 'r' to raytrace");`
484	`glutDisplayFunc(display);`	481	`glutDisplayFunc(display);`
485	`glutReshapeFunc(reshape);`	482	`glutReshapeFunc(reshape);`
486	`glutKeyboardFunc(keyboard);`	483	`glutKeyboardFunc(keyboard);`
487	`glutMouseFunc(mouse);`	484	`glutMouseFunc(mouse);`
488	`glutMotionFunc(move);`	485	`glutMotionFunc(move);`
489		486
490	`// LOAD OBJ`	487	`// LOAD OBJ`
491	`string filename;`	488	`string filename;`
492	`if(argc > 1)`	489	`if(argc > 1)`
493	`{`	490	`{`
494	`filename = argv[1];`	491	`filename = argv[1];`
495	`cout << "Loading " << filename << endl;`	492	`cout << "Loading " << filename << endl;`
496		493
497	`obj_load(filename, mesh);`	494	`obj_load(filename, mesh);`
498	`//if(!mesh.has_normals())`	495	`//if(!mesh.has_normals())`
499	`//{`	496	`//{`

Subversion Repositories gelsvn

(root)/trunk/apps/Raytracer/raytrace.cpp/ – Rev 309 → 310