如何在opengl中绘制y轴或x轴的圆柱体

Question

我只想在opengl中绘制一个圆柱体.我发现了很多样本,但是所有样本都在z轴上绘制了圆柱体.我希望它们在x或y轴上.我怎样才能做到这一点.下面的代码是代码在z方向绘制圆柱体,我不想要它

  GLUquadricObj *quadratic;
  quadratic = gluNewQuadric();
  gluCylinder(quadratic,0.1f,0.1f,3.0f,32,32);

Answer 1

您可以使用glRotate(angle, x, y, z)旋转坐标系:

GLUquadricObj *quadratic;
quadratic = gluNewQuadric();
glRotatef(90.0f, 0.0f, 1.0f, 0.0f);
gluCylinder(quadratic,0.1f,0.1f,3.0f,32,32);