重繪glQuads - OpenGL的

Question

起初我有一個簡單的白色矩形棱柱這樣的：

下面的代碼：

glBegin(GL_QUADS);    

     glColor3f(255,255,255);  
     glVertex3f(0.3, 0, 2.5);//sisi bawah 
     glVertex3f(0.5, 0, 2.5); 
     glVertex3f(0.5, 0, 2.6); 
     glVertex3f(0.3, 0, 2.6); 

     glVertex3f(0.5, 0, 2.6);//sisi kiri 
     glVertex3f(0.3, 0, 2.6); 
     glVertex3f(0.3, 1.5, 2.6); 
     glVertex3f(0.5, 1.5, 2.6); 

     glVertex3f(0.5, 0, 2.5);//sisi depan 
     glVertex3f(0.5, 0, 2.6); 
     glVertex3f(0.5, 1.5, 2.6); 
     glVertex3f(0.5, 1.5, 2.5); 

     glVertex3f(0.3, 0, 2.5);//sisi belakang 
     glVertex3f(0.3, 0, 2.6); 
     glVertex3f(0.3, 1.5, 2.6); 
     glVertex3f(0.3, 1.5, 2.5); 

     glVertex3f(0.3, 1.5, 2.5);//sisi atas 
     glVertex3f(0.5, 1.5, 2.5); 
     glVertex3f(0.5, 1.5, 2.6); 
     glVertex3f(0.3, 1.5, 2.6); 

     glVertex3f(0.5, 0, 2.5);//sisi kanan 
     glVertex3f(0.3, 0, 2.5); 
     glVertex3f(0.3, 1.5, 2.5); 
     glVertex3f(0.5, 1.5, 2.5); 

glEnd(); 

然後，我想提請另一個像這樣的矩形棱鏡：

只需使用glTranslate就可以重新繪製另一個棱鏡，因此我不必手動插入數字？

Answer 1

是的，創建一個函數來調用繪製關於其模型座標棱鏡的繪圖命令，drawPrism。然後在代碼中，你可以這樣做：

//draw prism 1 
glPushMatrix(); 
glTranslate(x1, y1, z1); 
drawPrism(); 
glPopMatrix(); 

//draw prism 2 
glPushMatrix(); 
glTranslate(x2, y2, z2); 
drawPrism(); 
glPopMatrix();