week04 02160200 3D物件 移動 旋轉

原本

#include <GL/glut.h>

void display()

{

    glutWireTorus(0.3,0.7,30,30);///(內徑R,外徑R,橫切,縱切)

    glutSolidTeapot(0.2);

    glFlush();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160200");

    glutDisplayFunc(display);

    glutMainLoop();

}

移動

#include <GL/glut.h>

void display()

{

    glutWireTorus(0.3,0.7,30,30);///(內徑R,外徑R,橫切,縱切)

    glPushMatrix();

        glTranslatef(0.5,0,0);///移動(x,y,z)

    glutSolidTeapot(0.2);

   glPopMatrix();

    glFlush();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160200");

    glutDisplayFunc(display);

    glutMainLoop();

}

旋轉

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);///清畫面

    glPushMatrix();///備份matrix

        glRotatef(angle,1,1,0);///旋轉對(1,1,0)軸 轉動angle

    glutWireTorus(0.3,0.7,30,30);///(內徑R,外徑R,橫切,縱切)

        ///glTranslatef(0.5,0,0);移動(x,y,z)

    glutSolidTeapot(0.2);

   glPopMatrix();///還原matrix

    glFlush();

    angle+=0.1;///每次加一點

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160200");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}