这个是api中解释void glOrthox(GLfixed left, GLfixed right, GLfixed bottom, GLfixed top, GLfixed near, GLfixed far)Parameters left, right Specify the coordinates for the left and right vertical clipping planes.bottom, top Specify the coordinates for the bottom and top horizontal clipping planes.near, far Specify the distances to the nearer and farther depth clipping planes. These values are negative if the plane is to be behind the viewer.我的理解画出来应该是一个正方体,定点和一起就变成一个三棱锥,具体没试,你可以试试
GLfixed right,
GLfixed bottom,
GLfixed top,
GLfixed near,
GLfixed far)Parameters
left, right
Specify the coordinates for the left and right vertical clipping planes.bottom, top
Specify the coordinates for the bottom and top horizontal clipping planes.near, far
Specify the distances to the nearer and farther depth clipping planes. These values are negative if the plane is to be behind the viewer.我的理解画出来应该是一个正方体,定点和一起就变成一个三棱锥,具体没试,你可以试试