[CE Update6 C++]请问怎样用代码调整视图亮度？

我看SDK中有Light对象，其下有SetBrightness和SetIntensity等方法可以试试。

尝试过如下方法，虽然亮度值改变了，但实际上没效果。

void Test光照()
{
	LightManager& lightManager = LightManager::GetManagerR();
	DgnModelP activeDgnModel = ISessionMgr::GetActiveDgnModelP();
	LightSetupPtr pLightSetup = lightManager.GetActiveLightSetupPtrForModel(*activeDgnModel);
	pLightSetup->SetBrightnessMultiplierForView(100);

	mdlView_updateSingle(0);

	ViewFlags viewFlags;
	if (SUCCESS != mdlView_getFlags(&viewFlags, 0))
	{
		return;
	}
	// 打开默认光照
	viewFlags.ignoreSceneLights = 1;
	if (SUCCESS != mdlView_setFlags(&viewFlags, 0))
	{
		return;
	}
	// 关闭默认光照
	viewFlags.ignoreSceneLights = 0;
	if (SUCCESS != mdlView_setFlags(&viewFlags, 0))
	{
		return;
	}
	mdlView_updateSingle(0);
}

尝试过如下方法，虽然亮度值改变了，但实际上没效果。

void Test光照()
{
	LightManager& lightManager = LightManager::GetManagerR();
	DgnModelP activeDgnModel = ISessionMgr::GetActiveDgnModelP();
	LightSetupPtr pLightSetup = lightManager.GetActiveLightSetupPtrForModel(*activeDgnModel);
	pLightSetup->SetBrightnessMultiplierForView(100);

	mdlView_updateSingle(0);

	ViewFlags viewFlags;
	if (SUCCESS != mdlView_getFlags(&viewFlags, 0))
	{
		return;
	}
	// 打开默认光照
	viewFlags.ignoreSceneLights = 1;
	if (SUCCESS != mdlView_setFlags(&viewFlags, 0))
	{
		return;
	}
	// 关闭默认光照
	viewFlags.ignoreSceneLights = 0;
	if (SUCCESS != mdlView_setFlags(&viewFlags, 0))
	{
		return;
	}
	mdlView_updateSingle(0);
}

设置完值后调用LightManager下的SaveSetupToModel保存回去试一下。

测试代码如下：

void adjustViewBrightness()
{
	IndexedViewSetR viewSet = IViewManager::GetActiveViewSet();
	IndexedViewportP pViewport = viewSet.GetSelectedViewport();
	LightManagerR lightMgr = LightManager::GetManagerR();
	DgnModelP     pDgnModel = ISessionMgr::GetActiveDgnModelP();
	bool          bUseModelLight = pViewport->GetViewFlags()->ignoreSceneLights;
	LightSetupCP  pSetup = lightMgr.GetActiveLightSetupForModel(bUseModelLight, *pDgnModel);
	double brightness = pSetup->GetBrightnessMultiplierForView();
	double adaptation = pSetup->GetAdaptationLevelForView();

	double newBrightness = brightness * 5;
	double newAdaptation = adaptation / 5;
	LightSetupPtr pNewSetup = LightSetup::Create();
	pNewSetup->Copy(*pSetup);
	pNewSetup->SetBrightnessMultiplierForView(newBrightness);
	pNewSetup->SetAdaptationLevelForView(newAdaptation);
	lightMgr.SaveSetupToModel(*pNewSetup, true, *pDgnModel);

	IndexedViewSet::FullUpdateInfo info;
	info.SetStopEvents(StopEvents(false, true, true, true, false, false));
	viewSet.UpdateView(pViewport, DgnDrawMode::DRAW_MODE_Normal, DrawPurpose::Update, info);
}