Week 8 P.L 課堂筆記

One. 練習考試

glPushMatrix(); //備份矩陣
glTranslatef(x,y,z); //移動
glRotatef(angle,x,y,z); //旋轉
glScalef(x,y,z); //放大縮小
glBegin(GL_POLYGON); //開始畫
     glColor3f(r,g,b); //顏色
     glVertex3f(x,y,z); //頂點
     glNormal3f(nx,ny,nz); //打光法向量
     glTexCoord3f(tx,ty); //貼圖座標
glEnd(); //結束
glPopMatrix(); //還原矩陣

Two. 旋轉

float angle=0;
static void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    angle++;
    glPushMatrix();
        glRotatef(angle,0,1,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
///1
    glPushMatrix();
        glTranslatef(0,0.6,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
///2
    glPushMatrix();
        glTranslatef(0,-0.6,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
///3
    glutSwapBuffers();
}