josh/wfobj-view
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retabbed

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This commit is contained in:
Josh Holtrop 2011-04-25 16:32:41 -04:00
parent bead7f9690
commit 54e3970362
1 changed files with 133 additions and 133 deletions
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264
wfobj-view.cc
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@ -15,173 +15,173 @@ using namespace std;
class Viewer class Viewer
{ {
public: public:
Viewer(const char * filename); Viewer(const char * filename);
void run(); void run();
private: private:
void initgl(); void initgl();
void display(); void display();
void setProjection(); void setProjection();
WFObj m_obj; WFObj m_obj;
GLuint m_list; GLuint m_list;
float m_rotationMatrix[16]; float m_rotationMatrix[16];
int m_startx, m_starty; int m_startx, m_starty;
bool m_dragging; bool m_dragging;
float m_dist; float m_dist;
}; };
/* The program's main entry point */ /* The program's main entry point */
int main(int argc, char * argv[]) int main(int argc, char * argv[])
{ {
if (argc < 2) if (argc < 2)
{ {
cerr << "Usage: " << argv[0] << " <filename>" << endl; cerr << "Usage: " << argv[0] << " <filename>" << endl;
return -1; return -1;
} }
if (SDL_Init(SDL_INIT_VIDEO)) if (SDL_Init(SDL_INIT_VIDEO))
{ {
printf("Failed to initialize SDL!\n"); printf("Failed to initialize SDL!\n");
return -2; return -2;
} }
atexit(SDL_Quit); atexit(SDL_Quit);
SDL_Surface * screen; SDL_Surface * screen;
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
if (!(screen = SDL_SetVideoMode(WIDTH, HEIGHT, 32, SDL_OPENGL))) if (!(screen = SDL_SetVideoMode(WIDTH, HEIGHT, 32, SDL_OPENGL)))
{ {
printf("Failed to set video mode!\n"); printf("Failed to set video mode!\n");
SDL_Quit(); SDL_Quit();
return -3; return -3;
} }
SDL_WM_SetCaption(TITLE, TITLE); SDL_WM_SetCaption(TITLE, TITLE);
Viewer v(argv[1]); Viewer v(argv[1]);
v.run(); v.run();
return 0; return 0;
} }
Viewer::Viewer(const char * filename) Viewer::Viewer(const char * filename)
{ {
m_dist = 5.0; m_dist = 5.0;
m_dragging = false; m_dragging = false;
if (!m_obj.load(filename)) if (!m_obj.load(filename))
{ {
cerr << "Error loading " << filename << endl; cerr << "Error loading " << filename << endl;
exit(1); exit(1);
} }
/* Print out the object's size */ /* Print out the object's size */
const float * aabb = m_obj.getAABB(); const float * aabb = m_obj.getAABB();
cout << "Object width: " << (aabb[3]-aabb[0]) << endl; cout << "Object width: " << (aabb[3]-aabb[0]) << endl;
cout << "Object depth: " << (aabb[4]-aabb[1]) << endl; cout << "Object depth: " << (aabb[4]-aabb[1]) << endl;
cout << "Object height: " << (aabb[5]-aabb[2]) << endl; cout << "Object height: " << (aabb[5]-aabb[2]) << endl;
} }
void Viewer::initgl() void Viewer::initgl()
{ {
glClearColor(0.0, 0.0, 0.0, 0.0); glClearColor(0.0, 0.0, 0.0, 0.0);
glEnable(GL_DEPTH_TEST); glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH); glShadeModel(GL_SMOOTH);
glEnable(GL_LIGHTING); glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0); glEnable(GL_LIGHT0);
glEnable(GL_CULL_FACE); glEnable(GL_CULL_FACE);
glViewport(0, 0, WIDTH, HEIGHT); glViewport(0, 0, WIDTH, HEIGHT);
setProjection(); setProjection();
glLoadIdentity(); glLoadIdentity();
glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix); glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix);
// float pos[] = {0.0, -1.0, 0.0, 0.0}; // float pos[] = {0.0, -1.0, 0.0, 0.0};
// glLightfv(GL_LIGHT0, GL_POSITION, pos); // glLightfv(GL_LIGHT0, GL_POSITION, pos);
GLfloat lightAmbient[] = {0.2, 0.2, 0.2, 1}; GLfloat lightAmbient[] = {0.2, 0.2, 0.2, 1};
glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient); glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient);
GLfloat ambient[] = {0.0, 0.0, 0.0, 1.0}; GLfloat ambient[] = {0.0, 0.0, 0.0, 1.0};
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient); glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
} }
void Viewer::setProjection() void Viewer::setProjection()
{ {
glMatrixMode(GL_PROJECTION); glMatrixMode(GL_PROJECTION);
glLoadIdentity(); glLoadIdentity();
gluPerspective(60.0, (GLfloat)WIDTH/(GLfloat)WIDTH, 0.01, 10000.0); gluPerspective(60.0, (GLfloat)WIDTH/(GLfloat)WIDTH, 0.01, 10000.0);
// gluLookAt(0, m_dist, 0, 0, 0, 0, 0, 0, 1); // gluLookAt(0, m_dist, 0, 0, 0, 0, 0, 0, 1);
glMatrixMode(GL_MODELVIEW); glMatrixMode(GL_MODELVIEW);
} }
void Viewer::display() void Viewer::display()
{ {
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glLoadIdentity(); glLoadIdentity();
gluLookAt(0, -m_dist, 0, 0, 0, 0, 0, 0, 1); gluLookAt(0, -m_dist, 0, 0, 0, 0, 0, 0, 1);
glMultMatrixf(m_rotationMatrix); glMultMatrixf(m_rotationMatrix);
m_obj.draw(); m_obj.draw();
SDL_GL_SwapBuffers(); SDL_GL_SwapBuffers();
} }
void Viewer::run() void Viewer::run()
{ {
initgl(); initgl();
display(); display();
SDL_Event event; SDL_Event event;
while (SDL_WaitEvent(&event)) while (SDL_WaitEvent(&event))
{ {
if (event.type == SDL_QUIT) if (event.type == SDL_QUIT)
break; break;
else if (event.type == SDL_KEYDOWN) else if (event.type == SDL_KEYDOWN)
{ {
if (event.key.keysym.sym == SDLK_ESCAPE) if (event.key.keysym.sym == SDLK_ESCAPE)
break; break;
if (event.key.keysym.sym == SDLK_q) if (event.key.keysym.sym == SDLK_q)
break; break;
} }
else if (event.type == SDL_MOUSEBUTTONDOWN) else if (event.type == SDL_MOUSEBUTTONDOWN)
{ {
if (event.button.button == SDL_BUTTON_LEFT) if (event.button.button == SDL_BUTTON_LEFT)
{ {
if (event.button.state == SDL_PRESSED) if (event.button.state == SDL_PRESSED)
{ {
m_dragging = true; m_dragging = true;
m_startx = event.button.x; m_startx = event.button.x;
m_starty = event.button.y; m_starty = event.button.y;
} }
} }
else if (event.button.button == 4) else if (event.button.button == 4)
{ {
m_dist *= 0.85; m_dist *= 0.85;
if (m_dist < 1.0f) if (m_dist < 1.0f)
m_dist = 1.0f; m_dist = 1.0f;
setProjection(); setProjection();
display(); display();
} }
else if (event.button.button == 5) else if (event.button.button == 5)
{ {
m_dist *= 1.2; m_dist *= 1.2;
setProjection(); setProjection();
display(); display();
} }
} }
else if (event.type == SDL_MOUSEBUTTONUP) else if (event.type == SDL_MOUSEBUTTONUP)
{ {
if (event.button.button == SDL_BUTTON_LEFT) if (event.button.button == SDL_BUTTON_LEFT)
{ {
m_dragging = false; m_dragging = false;
} }
} }
else if (event.type == SDL_MOUSEMOTION) else if (event.type == SDL_MOUSEMOTION)
{ {
if (m_dragging) if (m_dragging)
{ {
glLoadIdentity(); glLoadIdentity();
glRotatef(event.motion.y - m_starty, 1, 0, 0); glRotatef(event.motion.y - m_starty, 1, 0, 0);
glRotatef(event.motion.x - m_startx, 0, 0, 1); glRotatef(event.motion.x - m_startx, 0, 0, 1);
glMultMatrixf(m_rotationMatrix); glMultMatrixf(m_rotationMatrix);
glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix); glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix);
m_startx = event.motion.x; m_startx = event.motion.x;
m_starty = event.motion.y; m_starty = event.motion.y;
display(); display();
} }
} }
} }
} }