Пример #1
0
	void
RAS_FramingManager::
ComputeBestFitViewRect(
	const RAS_Rect &availableViewport,
	const float design_aspect_ratio,
	RAS_Rect &viewport
){
	// try and honour the aspect ratio when setting the 
	// drawable area. If we don't do this we are liable
	// to get a lot of distortion in the rendered image.
	
	int width = availableViewport.GetWidth();
	int height = availableViewport.GetHeight();
	float window_aspect = float(width)/float(height);

	if (window_aspect < design_aspect_ratio) {
		int v_height = (int)(width / design_aspect_ratio); 
		int left_over = (height - v_height) / 2; 
			
		viewport.SetLeft(availableViewport.GetLeft());
		viewport.SetBottom(availableViewport.GetBottom() + left_over);
		viewport.SetRight(availableViewport.GetLeft() + width);
		viewport.SetTop(availableViewport.GetBottom() + left_over + v_height);

	} else {
		int v_width = (int)(height * design_aspect_ratio);
		int left_over = (width - v_width) / 2; 

		viewport.SetLeft(availableViewport.GetLeft() + left_over);
		viewport.SetBottom(availableViewport.GetBottom());
		viewport.SetRight(availableViewport.GetLeft() + v_width + left_over);
		viewport.SetTop(availableViewport.GetBottom() + height);
	}
}
void RAS_OpenGLRasterizer::SetRenderArea()
{
	RAS_Rect area;
	// only above/below stereo method needs viewport adjustment
	switch (m_stereomode)
	{
		case RAS_STEREO_ABOVEBELOW:
			switch (m_curreye) {
				case RAS_STEREO_LEFTEYE:
					// upper half of window
					area.SetLeft(0);
					area.SetBottom(m_2DCanvas->GetHeight() -
						int(m_2DCanvas->GetHeight() - m_noOfScanlines) / 2);
	
					area.SetRight(int(m_2DCanvas->GetWidth()));
					area.SetTop(int(m_2DCanvas->GetHeight()));
					m_2DCanvas->SetDisplayArea(&area);
					break;
				case RAS_STEREO_RIGHTEYE:
					// lower half of window
					area.SetLeft(0);
					area.SetBottom(0);
					area.SetRight(int(m_2DCanvas->GetWidth()));
					area.SetTop(int(m_2DCanvas->GetHeight() - m_noOfScanlines) / 2);
					m_2DCanvas->SetDisplayArea(&area);
					break;
			}
			break;
		case RAS_STEREO_SIDEBYSIDE:
			switch (m_curreye)
			{
				case RAS_STEREO_LEFTEYE:
					// Left half of window
					area.SetLeft(0);
					area.SetBottom(0);
					area.SetRight(m_2DCanvas->GetWidth()/2);
					area.SetTop(m_2DCanvas->GetHeight());
					m_2DCanvas->SetDisplayArea(&area);
					break;
				case RAS_STEREO_RIGHTEYE:
					// Right half of window
					area.SetLeft(m_2DCanvas->GetWidth()/2);
					area.SetBottom(0);
					area.SetRight(m_2DCanvas->GetWidth());
					area.SetTop(m_2DCanvas->GetHeight());
					m_2DCanvas->SetDisplayArea(&area);
					break;
			}
			break;
		default:
			// every available pixel
			area.SetLeft(0);
			area.SetBottom(0);
			area.SetRight(int(m_2DCanvas->GetWidth()));
			area.SetTop(int(m_2DCanvas->GetHeight()));
			m_2DCanvas->SetDisplayArea(&area);
			break;
	}
}
Пример #3
0
void KX_KetsjiEngine::GetSceneViewport(KX_Scene *scene, KX_Camera* cam, RAS_Rect& area, RAS_Rect& viewport)
{
	// In this function we make sure the rasterizer settings are upto
	// date. We compute the viewport so that logic
	// using this information is upto date.

	// Note we postpone computation of the projection matrix
	// so that we are using the latest camera position.
	if (cam->GetViewport()) {
		RAS_Rect userviewport;

		userviewport.SetLeft(cam->GetViewportLeft()); 
		userviewport.SetBottom(cam->GetViewportBottom());
		userviewport.SetRight(cam->GetViewportRight());
		userviewport.SetTop(cam->GetViewportTop());

		// Don't do bars on user specified viewport
		RAS_FrameSettings settings = scene->GetFramingType();
		if(settings.FrameType() == RAS_FrameSettings::e_frame_bars)
			settings.SetFrameType(RAS_FrameSettings::e_frame_extend);

		RAS_FramingManager::ComputeViewport(
			scene->GetFramingType(),
			userviewport,
			viewport
		);

		area = userviewport;
	}
	else if ( !m_overrideCam || (scene->GetName() != m_overrideSceneName) ||  m_overrideCamUseOrtho ) {
		RAS_FramingManager::ComputeViewport(
			scene->GetFramingType(),
			m_canvas->GetDisplayArea(),
			viewport
		);

		area = m_canvas->GetDisplayArea();
	} else {
		viewport.SetLeft(0); 
		viewport.SetBottom(0);
		viewport.SetRight(int(m_canvas->GetWidth()));
		viewport.SetTop(int(m_canvas->GetHeight()));

		area = m_canvas->GetDisplayArea();
	}
}
Пример #4
0
	void
RAS_FramingManager::
ComputeViewport(
	const RAS_FrameSettings &settings,
	const RAS_Rect &availableViewport,
	RAS_Rect &viewport
){

	RAS_FrameSettings::RAS_FrameType type = settings.FrameType();
	const int winx = availableViewport.GetWidth();
	const int winy = availableViewport.GetHeight();

	const float design_width = float(settings.DesignAspectWidth());
	const float design_height = float(settings.DesignAspectHeight());

	float design_aspect_ratio = float(1);

	if (design_height == float(0)) {
		// well this is ill defined 
		// lets just scale the thing

		type = RAS_FrameSettings::e_frame_scale;
	} else {
		design_aspect_ratio = design_width/design_height;
	}

	switch (type) {

		case RAS_FrameSettings::e_frame_scale :
		case RAS_FrameSettings::e_frame_extend:
		{
			viewport.SetLeft(availableViewport.GetLeft());
			viewport.SetBottom(availableViewport.GetBottom());
			viewport.SetRight(availableViewport.GetLeft() + int(winx));
			viewport.SetTop(availableViewport.GetBottom() + int(winy));

			break;
		}

		case RAS_FrameSettings::e_frame_bars:
		{
			ComputeBestFitViewRect(
				availableViewport,
				design_aspect_ratio,	
				viewport
			);
		
			break;
		}
		default :
			break;
	}
}