Exercicio de Computação Gráfica Câmera e Rotação

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glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);

glTexEnvf ( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );

// Faz a geraçao da textura na memória

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, Width, Height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);

fclose (fp_arquivo);

free (image);

return 1;

}

void init(void)

{

glShadeModel(GL_SMOOTH);

// habilita luz e transparencia

glEnable(GL_BLEND);

glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

glEnable(GL_LIGHTING);

glEnable(GL_LIGHT0);

glEnable(GL_LIGHT1);

glEnable(GL_DEPTH_TEST);

glClearColor(0.0, 0.0, 0.0, 0.0);

// gera um objeto de textura, para o vetor e carrega com a imagem

glEnable ( GL_TEXTURE_2D );

glPixelStorei ( GL_UNPACK_ALIGNMENT, 1 );

glGenTextures ( 1, texture_id );

glBindTexture ( GL_TEXTURE_2D, texture_id[0] );

LoadBMP ("wood.bmp");

}

void display(void)

{

glClear(GL_COLOR_BUFFER_BIT);

glClear(GL_DEPTH_BUFFER_BIT);

glColor3d(1.0, 0.0, 0.0);

glLoadIdentity();

// Seta a camera

gluLookAt( x, 1.0f, z,

x+lx, 1.0f, z+lz,

0.0f, 1.0f, 0.0f);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glColor3f (1.0, 1.0, 1.0);

glPushMatrix () ; //define a luz

GLfloat light_position[] = { ix, iy, iz, 1.0 };

glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glPopMatrix();

glPushMatrix();

//chao

GLfloat verde[] = {0, 1, 0, 1};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, verde);

glBegin(GL_QUADS);

glVertex3f(-5, 0, -5);

glVertex3f(5, 0, -5);

glVertex3f(5, 0, 5);

glVertex3f(-5, 0, 5);

glEnd();

glPopMatrix();

//paredes

glPushMatrix();

GLfloat azul[] = {0, 0, 1, 1};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, azul);

glBegin(GL_QUADS);

glVertex3f(-5, 0, -5);

glVertex3f(-5, 5, -5);

glVertex3f(5, 5, -5);

glVertex3f(5, 0, -5);

glEnd();

glPopMatrix();

glPushMatrix();

GLfloat azul2[] = {0, 0, 0.8, 1};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, azul2);

glBegin(GL_QUADS);

glVertex3f(5, 0, 5);

glVertex3f(5, 5, 5);

glVertex3f(-5, 5, 5);

glVertex3f(-5, 0, 5);

glEnd();

glPopMatrix();

glPushMatrix();

GLfloat azul3[] = {0, 0.3, 0.8, 1};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, azul3);

glBegin(GL_QUADS);

glPushMatrix();

glVertex3f(-5, 0, -5);

glVertex3f(-5, 5, -5);

glVertex3f(-5, 5, 5);

glVertex3f(-5, 0, 5);

glEnd();

glPopMatrix();

//mesa

GLfloat branco[] = {1, 1, 1, 1};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, branco);

glPushMatrix();

glTranslatef(0,0.35,0);

glRotatef(-90, 1, 0, 0);

gluCylinder(gluNewQuadric(), 0, 1, 0.05, 10, 1);

glPopMatrix();

glPushMatrix();

glRotatef(-90, 1, 0, 0);

gluCylinder(gluNewQuadric(), 0.2, 0.2, 0.73, 6, 3);

glPopMatrix();

//cilindro- capa do abajur

GLfloat capaabj[] = {1, 1, 0.6, 0.6};

glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, capaabj);

glPushMatrix();