第六周上課內容

1. 複習上週的Doraemon的圓球

#include<GL/glut.h>

#include<stdio.h>

float rot=0;

float rotX=0,rotY=0;

float oldx=0,oldy=0;

void display();

void mouse();

void motion();

void lighting();

void display()

{    

     glEnable(GL_DEPTH_TEST);

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);  

     glPushMatrix();

                    //glRotatef(rot,0,1,0);

                    glRotatef(rotX,0,1,0);

                    glRotatef(rotY,1,0,0);

                    glColor3ub(8,3,253);

                    glutSolidSphere(0.3,40,40);

                    glTranslatef(0,-0.4,0);

                    glutSolidSphere(0.3,40,40);

                    glPopMatrix();

                    glutSwapBuffers();

}

void mouse (int button, int event, int x, int y)

{

     printf("%d %d %d %d\n", button, event, x, y);

     if(button==GLUT_LEFT_BUTTON && event==GLUT_DOWN)

     {

     oldx=x; oldy=y;                            

     } 

}

void motion(int x, int y)

{

     printf("%d %d\n",x ,y);

     rot=y;

     rotX=x; rotY=y;

     rotX +=(x-oldx);

     rotY +=(y-oldy);

     display();

}

void lighting()

{

const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);

glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);

glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);

glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);

glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);

glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("00161045_Shape");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

lighting();

glutMainLoop();

return 0;

}