week6-加強統整 一次複習全部

上課先操作teams 預防疫情停課

1.先使用原本那一套叫出GLUT

2.一步一步叫出功能  mouse,motion,keyboard

#include <GL/glut.h>

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 };

int type=1;

float teapotx=0, teapoty=0;

float teapotroty=0;

int oldx=0,oldy=0;

void mouse(int button,int state,int x,int y)  //mouse的函式

{

    oldx=x;

    oldy=y;

}

void motion(int x,int y) //motion的函式

{

    if(type==1) teapotroty+= x-oldx;

    else if(type==2){

    teapotx+=x-oldx;

    teapoty+=y-oldy;}

    oldx=x;

    oldy=y;

    glutPostOverlayRedisplay();

}

void display() //display的函式

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslatef(teapotx/250.0,-teapoty/250.0,0);

    glRotatef(teapotroty,0,-1,0);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

    teapotroty++;

}

#include <stdio.h>

void keyboard(unsigned char key,int x,int y) //keyboard的函式

{

    if(key=='e' || key=='E') type=1;

     if(key=='w' || key=='W') type=2;

     printf("now: %c\n",key);

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitWindowSize(640,480);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutIdleFunc(display);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    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);

    glutMainLoop();

    return EXIT_SUCCESS;

}