UNIDAD III DIBUJOS Y TRANSFORMACIONES GEOMETRICAS

CODIGO DE ESCALACION, ROTACION Y TRASLACION EN UNO SOLO

#include <GL/glut.h>

GLfloat anguloCuboX = 0.0f;
GLfloat anguloCuboY = 0.0f;
GLfloat anguloEsfera = 0.0f;

GLint ancho=400;
GLint alto=400;

int hazPerspectiva = 0;

void reshape(int width, int height)
{
    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
   
    if(hazPerspectiva)
 gluPerspective(60.0f, (GLfloat)width/(GLfloat)height, 1.0f, 20.0f);
    else

 glOrtho(-4,4, -4, 4, 1, 10);

    glMatrixMode(GL_MODELVIEW);

    ancho = width;
    alto = height;
}

void drawCube(void)
{
    glColor3f(1.0f, 0.0f, 0.5f);
    glBegin(GL_QUADS);       //cara frontal
    glVertex3f(-0.5f, -0.5f,  0.5f);
    glVertex3f( 0.5f, -0.5f,  0.5f);
    glVertex3f( 0.5f,  0.5f,  0.5f);
    glVertex3f(-0.5f,  0.5f,  0.5f);

    glEnd();

    glColor3f(0.0f, 1.0f, 1.0f);

    glBegin(GL_QUADS);       //cara trasera
    glVertex3f( 0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f,  0.5f, -0.5f);
    glVertex3f( 0.5f,  0.5f, -0.5f);

    glEnd();

    glColor3f(0.0f, 0.0f, 1.0f);
    glBegin(GL_QUADS);       //cara lateral izq
    glVertex3f(-0.5f,-0.5f, -0.5f);
    glVertex3f(-0.5f,-0.5f,  0.5f);
    glVertex3f(-0.5f, 0.5f,  0.5f);
    glVertex3f(-0.5f, 0.5f, -0.5f);
    glEnd();

    glColor3f(1.0f, 1.0f, 0.0f);
    glBegin(GL_QUADS);       //cara lateral dcha
    glVertex3f(0.5f, -0.5f,  0.5f);
    glVertex3f(0.5f, -0.5f, -0.5f);
    glVertex3f(0.5f,  0.5f, -0.5f);
    glVertex3f(0.5f,  0.5f,  0.5f);
    glEnd();
    glColor3f(0.0f,      1.0f, 0.0f);
    glBegin(GL_QUADS);       //cara arriba
    glVertex3f(-0.5f, 0.5f,  0.5f);
    glVertex3f( 0.5f, 0.5f,  0.5f);
    glVertex3f( 0.5f, 0.5f, -0.5f);
    glVertex3f(-0.5f, 0.5f, -0.5f);
    glEnd();

    glColor3f(1.0f, 0.0f, 0.0f);
    glBegin(GL_QUADS);       //cara abajo
    glVertex3f( 0.5f,-0.5f, -0.5f);
    glVertex3f( 0.5f,-0.5f,  0.5f);
    glVertex3f(-0.5f,-0.5f,  0.5f);
    glVertex3f(-0.5f,-0.5f, -0.5f);
    glEnd();
}

void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glLoadIdentity();

    glTranslatef(3.0f, 0.0f, -5.0f);

    glRotatef(anguloCuboX, 1.0f, 0.0f, 0.0f);
    glRotatef(anguloCuboY, 0.0f, 1.0f, 0.0f);

    drawCube();

    glLoadIdentity();

    glTranslatef(0.0f, 0.0f, -5.0f);
    glRotatef(anguloEsfera, 0.0f, 1.0f, 0.0f);
    glTranslatef(0.0f, 3.0f, 0.0f);

    glColor3f(1.0f, 1.0f, 1.0f);
    glutWireSphere(0.5f, 8, 8);

    glFlush();
    glutSwapBuffers();

    anguloCuboX+=0.1f;
    anguloCuboY+=0.1f;
    anguloEsfera+=0.2f;
}

void init()
{
    glClearColor(0,0,0,0);
    glEnable(GL_DEPTH_TEST);
    ancho = 400;
    alto = 400;
}
 

void idle()
{
    display();
}

void keyboard(unsigned char key, int x, int y)
{
    switch(key)
    {
    case 'p':
    case 'P':
 hazPerspectiva=1;
 reshape(ancho,alto);
 break;

    case 'o':
    case 'O':
 hazPerspectiva=0;
 reshape(ancho,alto);
 break;

    case 27:   // escape
// exit(0);
      break;
    }
}

int main(int argc, char **argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(ancho, alto);
    glutCreateWindow("Cubo 1");
    init();
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutIdleFunc(idle);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
    return 0;
}

RESULTADOS DE LA ROTACION TRASLACION Y ESCALACION

El cubo se roto 3 unidades en x, se escalo a la mitad y la esfera roto en su propio eje