publicclassExample : MonoBehaviour{
//枚举enumRenderModeStates { camera, overlay, world };
RenderModeStatesm_RenderModeStates;
//相机组件Canvasm_Canvas;
voidStart()
    {
m_Canvas=GetComponent<Canvas>();
    }
voidUpdate()
    {
//Pressthespacekeytoswitchbetweenrendermodestatesif (Input.GetKeyDown(KeyCode.Space))
        {
ChangeState();
        }
    }
使用switch判断voidChangeState()
    {
switch (m_RenderModeStates)
        {
caseRenderModeStates.camera:
m_Canvas.renderMode=RenderMode.ScreenSpaceCamera;
m_RenderModeStates=RenderModeStates.overlay;
break;
caseRenderModeStates.overlay:
m_Canvas.renderMode=RenderMode.ScreenSpaceOverlay;
m_RenderModeStates=RenderModeStates.world;
break;
caseRenderModeStates.world:
m_Canvas.renderMode=RenderMode.WorldSpace;
m_RenderModeStates=RenderModeStates.camera;
break;
        }
    }
}