LWJGL仅旋转一个对象

Question

我试图旋转我使用LWJGL在Java中创建的场景中的两个对象之一。
现在，当我尝试旋转一个对象时，它不会绕其中心旋转，而是绕大圆圈旋转。 在Google上搜索后，我现在知道它应该像这样工作：

glPushMatrix();
glBegin();

  //Code in here

glEnd();
glRotate();
glPopMatrix();

但这对我不起作用。 对象没有旋转。 这是我的渲染代码：

    public void render() {

        glPushMatrix();

            glRotatef(rotate, 0, 1.0f, 0);                   

            glBegin(GL_QUADS);

                // Top
                glVertex3f(-centerX + size, centerY + size, -centerZ - size);
                glVertex3f(-centerX - size, centerY + size, -centerZ - size);
                glVertex3f(-centerX - size, centerY + size, -centerZ + size);
                glVertex3f(-centerX + size, centerY + size, -centerZ + size);
                // Bottom
                glVertex3f(-centerX + size, centerY - size, -centerZ + size);
                glVertex3f(-centerX - size, centerY - size, -centerZ + size);
                glVertex3f(-centerX - size, centerY - size, -centerZ - size);
                glVertex3f(-centerX + size, centerY - size, -centerZ - size);
                // One side
                glVertex3f(-centerX + size, centerY + size, -centerZ + size);
                glVertex3f(-centerX - size, centerY + size, -centerZ + size);
                glVertex3f(-centerX - size, centerY - size, -centerZ + size);
                glVertex3f(-centerX + size, centerY - size, -centerZ + size);
                // Moar sides
                glVertex3f(-centerX + size, centerY - size, -centerZ - size);
                glVertex3f(-centerX - size, centerY - size, -centerZ - size);
                glVertex3f(-centerX - size, centerY + size, -centerZ - size);
                glVertex3f(-centerX + size, centerY + size, -centerZ - size);
                // Last side
                glVertex3f(-centerX - size, centerY + size, -centerZ + size);
                glVertex3f(-centerX - size, centerY + size, -centerZ - size);
                glVertex3f(-centerX - size, centerY - size, -centerZ - size);
                glVertex3f(-centerX - size, centerY - size, -centerZ + size);
                // Real last side
                glVertex3f(-centerX + size, centerY + size, -centerZ - size);
                glVertex3f(-centerX + size, centerY + size, -centerZ + size);
                glVertex3f(-centerX + size, centerY - size, -centerZ + size);
                glVertex3f(-centerX + size, centerY - size, -centerZ - size);

            glEnd();

        glPopMatrix();

        rotate++;
}

我现在尝试修复此问题数小时，但无法正常工作。

Answer 1

绘制四边形之前，应先调用glRotate()和glTranslate() 。

请记住，转换顺序很重要。 旋转始终约为0,0,0 ，因此，如果您首先平移，它将围绕一个圆点有点“轨道”。 如果您希望它绕自己的轴旋转（您可能会这样做），请先旋转，然后平移。

本文有一节介绍转换的顺序。

http://www.glprogramming.com/red/chapter03.html