MEEEEEEEEEEE week06

來齁來齁看這邊

先做出一個打光的茶壺

給你作法傳送門

https://2020graphicsb.blogspot.com/2020/03/meeeeeeeeeee-week05.html

你就會得到這個

搭搭 打光的茶壺✨

接下來要做的是移動轉動的茶壺

給你程式碼

int type=1;

float teapotX=0, teapotY=0; ///todo1

float teapotRotY=0;///轉動的變數

int oldX=0, oldY=0;

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

{

    oldX=x;

    oldY=y;

}

void motion(int x, int y)

{

        if(type==1)///轉動

        {

            teapotRotY += x-oldX;

        }

        else if(type==2)///移動

        {

            teapotX += x-oldX;

            teapotY += y-oldY;

        }

        oldX=x;

        oldY=y;

        glutPostRedisplay();///更新畫面

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();///todo2 備份矩陣

        glTranslatef( teapotX/250.0, -teapotY/250.0, 0);

        glRotatef(teapotRotY, 0, -1, 0);///x方向的動 vs. Y軸

        glutSolidTeapot( 0.3 );

    glPopMatrix();///todo2 備份矩陣

    glutSwapBuffers();

    teapotRotY++;///3:每次多轉動1度

}

void keyboard(unsigned char key, int x, int y)

{

    if( key=='e' || key=='E' ) type=1;

    if( key=='w' || key=='W' ) type=2;

    printf("now: %c\n", key);

}

/* Program entry point */

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

{

    glutInit(&argc, argv);

    glutInitWindowSize(500,500);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);///0

    glutMotionFunc(motion);///1

    glutKeyboardFunc(keyboard);///2

    glutIdleFunc(display);///3 Idle閒閒的時候 就重畫