其實是我翹課拉Week10

http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/?fbclid=IwAR15jWvGldrlKJDcrpnuYpWluaE7Du-cjQEc3-supSbl5zcvFO88EetTAzw

data+win32+glut32.dll 先下載並放好



差別1 (以自己為中心-自己轉)
glTranslatef   ///把圖放大縮小後做旋轉在移動
glRotatef       ///把圖放大縮小後做旋轉
glScalef        ///把圖放大縮小
glBegin        ///開始畫圖

差別2 (以其他地方為中心-公轉)
glRotatef       ///把圖放大縮小後做移動然後在旋轉
glTranslatef   ///把圖放大縮小後做移動
glScalef        ///把圖放大縮小
glBegin        ///開始畫圖


https://www.transmissionzero.co.uk/software/freeglut-devel/

freeglut 3.0.0 MinGW Package 下載

#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslatef(0,0.5,0);
        glutWireTeapot(0.3);
    glPopMatrix();
    glPushMatrix();
        glTranslatef(0.51,0.64,0);
        glRotatef(angle,0,0,1);
        glTranslatef(0.6,0,0);

        glRotatef(-90,0,1,0);
        glutWireCone(0.1,0.6,10,10);
    glPopMatrix();
    glutSwapBuffers();

}
void motion(int x,int y)
{
    angle = x;
    display();
}

int main(int argc, char ** argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10-TRT");

    glutDisplayFunc(display);
    glutMotionFunc(motion);
    glutMainLoop();
}