Open GL - pez en 3D

   
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pez en 3D

Publicado por Paco Martinez politico_6@hotmail.com (1 intervención) el 26/05/2011 20:05:36
Hola a todos, necesito a partir de un pez hecho en 2D con transformaciones geométricas, con su zoom, movimientos de translación..etc.. a partir de eso hacerlo en 3D... y no se como hacerlo ni que funciones utilizar... alguien me puede echar una mano????? Gracias..
Os dejo el codigo:

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
 
int alto=800;
int ancho=800;
float zoom=1.0, tx=0.0, ty=0.0;
 
static void Init( void )
{
	glClearIndex( 0.0 );
   	glShadeModel( GL_FLAT );
}
 
static void Reshape( int width, int height )
{
	ancho=width;
	alto=height;
 
 
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glViewport(0.1, 0.1, (GLint)width/2, (GLint)height/2);
   	glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
	glScalef(zoom,zoom,1.0);
        glTranslatef(tx,ty,0.0);
 
	glClearColor(0.0,0,0.7,0.0);
   	glClear( GL_COLOR_BUFFER_BIT );
   	glColor3f(0.0,0.0,0.0);
        glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glCallList(2);
        		//primera figura izquierda abajo
 
 
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glViewport((GLint)width/2, 0.0, (GLint)width/2, (GLint)height/2);
   	glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
	glScalef(zoom,zoom,1.0);
	glTranslatef(tx,ty,0.0);
 
        glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glCallList(2);
			//segunda figura derecha abajo
 
 
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glViewport(0, (GLint)width/2, (GLint)width/2, (GLint)height/2);
   	glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
	glScalef(zoom,zoom,1.0);
	glTranslatef(tx,ty,0.0);
 
        glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glCallList(2);
			// tercera figura izquierda arriba
 
 
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glViewport((GLint)width/2, (GLint)width/2, (GLint)width/2, (GLint)height/2);
   	glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
	glScalef(zoom,zoom,1.0);
	glTranslatef(tx,ty,0.0);
 
        glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glCallList(2);
			//cuarta figura derecha arriba
 
 
	glFlush();
 
}
 
 
 
static void Key_Esc(unsigned char key, int x, int y )
{
  	if (key==27)
      		exit(0);
 
  	if (key ==43){
		zoom*=1.1;
		Reshape(ancho,alto);
	}
 	if (key==45){
		zoom*=0.9;
		Reshape(ancho,alto);
	}
}
 
 
static void Special(int key, int x, int y )
{
  	if (key==GLUT_KEY_LEFT){
               	tx=tx-0.2;
               	Reshape(ancho,alto);
	}
      	if (key==GLUT_KEY_RIGHT){
		tx=tx+0.2;
		Reshape(ancho,alto);
	}
	if (key==GLUT_KEY_UP){
		ty=ty+0.2;
		Reshape(ancho,alto);
	}
	if (key==GLUT_KEY_DOWN){
		ty=ty-0.2;
		Reshape(ancho,alto);
	}
}
 
 
static void triangulo ()
{
	glNewList(1, GL_COMPILE);
 
		glBegin(GL_TRIANGLES);
		// Dibujamos un triángulo
		glColor3f (1.0,0.6, 0.0);
		// Color
		glVertex3f(0.0,0.0,0.0);
		// Coordenadas del primer vértice
		glVertex3f(0.0,0.4,0.0);
		// Coordenadas del segundo vértice
		glVertex3f(0.4,0.0,0.0);
		// Coordenadas del tercer vértice
                glEnd();
 
	glEndList();	// Terminamos de dibujar
 
}
 
static void cuadrado()
{
	glBegin(GL_QUADS);
	glColor3f (1.0,0.6, 0.0);
		//color
	glVertex3f(0.0,0.0,0.0);
	glVertex3f(0.0,0.2,0.0);
	glVertex3f(0.2,0.2,0.0);
	glVertex3f(0.2,0.0,0.0);
 
	glEnd();
}
 
void pez(){
 
   	glNewList(2, GL_COMPILE);
 
	glPushMatrix();
	glTranslatef(0.0,0.0,0.0);
	glRotatef(0.0,0.0,0.0,0.0);
	glCallList(1);
        glPopMatrix();
		// cuerpo de pez 1
 
	glPushMatrix();
	glRotatef(180.0,1.0,0.0,0.0);
	glCallList(1);
	glPopMatrix();
		// cuerpo de pez 2
 
	glPushMatrix();
	glTranslatef(0.0,0.2,0.0);
	glRotatef(180.0,0.0,1.0,0.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// ala de arriba 1
 
	glPushMatrix();
	glTranslatef(-0.2,0.2,0.0);
	glRotatef(180.0,1.0,0.0,0.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// ala de arriba 2
 
	glPushMatrix();
	glTranslatef(-0.2,-0.2,0.0);
	glRotatef(0.0,0.0,0.0,0.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// ala de abajo 1
 
	glPushMatrix();
	glTranslatef(0.0,-0.2,0.0);
	glRotatef(180.0,0.0,0.0,1.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// ala de abajo 2
 
	glPushMatrix();
	glTranslatef(-0.4,0.0,0.0);
 
	glRotatef(0.0,0.0,0.0,0.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// cola 1
 
	glPushMatrix();
	glTranslatef(-0.4,0.0,0.0);
	glRotatef(180.0,1.0,0.0,0.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// cola 2
 
	glPushMatrix();
	glTranslatef(0.5,0.1,0.0);
	glRotatef(45.0,0.0,0.0,1.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
		// gota 1
 
	glPushMatrix();
	glTranslatef(0.5,0.38,0.0);
	glRotatef(225.0,0.0,0.0,1.0);
	glScalef(0.5,0.5,0.0);
	glCallList(1);
	glPopMatrix();
   		// gota 2
 
	glEndList();
}
 
static void Display( void )
{
	Reshape(ancho,alto);
}
 
 
int main( int argc, char **argv )
{
 
   glutInit(&argc, argv);
   int a;
   glutInitDisplayMode( GLUT_RGB );
 
   glutInitWindowPosition(100,100 );
   glutInitWindowSize(800, 800 );
   glutCreateWindow("Pez con transformaciones geometricas");
 
   Init();
   triangulo();
   pez();
 
   glutReshapeFunc(Reshape);
   glutDisplayFunc(Display);
   glutKeyboardFunc(Key_Esc);
   glutSpecialFunc(Special);
 
   glutMainLoop( );
 
   return 0;
}
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