Add minimal head model and world scale, ref #43

--HG--
branch : multipass-stereo

code/nel/include/nel/3d/stereo_hmd.h

@@ -52,14 +52,18 @@ public:
 	
 	/// Get the HMD orientation
 	virtual NLMISC::CQuat getOrientation() const = 0;
-	
+
-	/// Set the head model, eye position relative to orientation point
-	// virtual void setEyePosition(const NLMISC::CVector &v) = 0;
-	/// Get the head model, eye position relative to orientation point
-	// virtual const NLMISC::CVector &getEyePosition() const = 0;
 	/// Get GUI center (1 = width, 1 = height, 0 = center)
 	virtual void getInterface2DShift(uint cid, float &x, float &y, float distance) const = 0;
 	
+	/// Set the head model, eye position relative to orientation point
+	virtual void setEyePosition(const NLMISC::CVector &v) = 0;
+	/// Get the head model, eye position relative to orientation point
+	virtual const NLMISC::CVector &getEyePosition() const = 0;
+
+	/// Set the scale of the game in units per meter
+	virtual void setScale(float s) = 0;
+	
 }; /* class IStereoHMD */
 
 } /* namespace NL3D */

code/nel/include/nel/3d/stereo_ovr.h

@@ -117,9 +117,18 @@ public:
 
 	/// Get the HMD orientation
 	virtual NLMISC::CQuat getOrientation() const;
+
 	/// Get GUI center (1 = width, 1 = height, 0 = center)
 	virtual void getInterface2DShift(uint cid, float &x, float &y, float distance) const;
 
+	/// Set the head model, eye position relative to orientation point
+	virtual void setEyePosition(const NLMISC::CVector &v);
+	/// Get the head model, eye position relative to orientation point
+	virtual const NLMISC::CVector &getEyePosition() const;
+
+	/// Set the scale of the game in units per meter
+	virtual void setScale(float s);
+
 
 	static void listDevices(std::vector<CStereoDeviceInfo> &devicesOut);
 	static bool isLibraryInUse();
@@ -150,6 +159,8 @@ private:
 	NLMISC::CQuadUV m_BarrelQuadLeft;
 	NLMISC::CQuadUV m_BarrelQuadRight;
 	CPixelProgram *m_PixelProgram;
+	NLMISC::CVector m_EyePosition;
+	float m_Scale;
 
 }; /* class CStereoOVR */
 

code/nel/src/3d/stereo_ovr.cpp

@@ -165,7 +165,7 @@ public:
 	OVR::HMDInfo HMDInfo;
 };
 
-CStereoOVR::CStereoOVR(const CStereoOVRDeviceHandle *handle) : m_Stage(0), m_SubStage(0), m_OrientationCached(false), m_Driver(NULL), m_BarrelTexU(NULL), m_PixelProgram(NULL)
+CStereoOVR::CStereoOVR(const CStereoOVRDeviceHandle *handle) : m_Stage(0), m_SubStage(0), m_OrientationCached(false), m_Driver(NULL), m_BarrelTexU(NULL), m_PixelProgram(NULL), m_EyePosition(0.0f, 0.09f, 0.15f), m_Scale(1.0f)
 {
 	++s_DeviceCounter;
 	m_DevicePtr = new CStereoOVRDevicePtr();
@@ -433,8 +433,8 @@ void CStereoOVR::getCurrentFrustum(uint cid, NL3D::UCamera *camera) const
 void CStereoOVR::getCurrentMatrix(uint cid, NL3D::UCamera *camera) const
 {
 	CMatrix translate;
-	if (m_Stage % 2) translate.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * -0.5f, 0.f, 0.f));
+	if (m_Stage % 2) translate.translate(CVector((m_DevicePtr->HMDInfo.InterpupillaryDistance * m_Scale) * -0.5f, 0.f, 0.f));
-	else translate.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * 0.5f, 0.f, 0.f));
+	else translate.translate(CVector((m_DevicePtr->HMDInfo.InterpupillaryDistance * m_Scale) * 0.5f, 0.f, 0.f));
 	camera->setTransformMode(NL3D::UTransformable::DirectMatrix);
 	camera->setMatrix(m_CameraMatrix[cid] * translate);
 }
@@ -594,6 +594,8 @@ void CStereoOVR::getInterface2DShift(uint cid, float &x, float &y, float distanc
 {
 #if 0
 
+	// todo: take into account m_EyePosition
+
 	NLMISC::CVector vector = CVector(0.f, -distance, 0.f);
 	NLMISC::CQuat rot = getOrientation();
 	rot.invert();
@@ -616,11 +618,12 @@ void CStereoOVR::getInterface2DShift(uint cid, float &x, float &y, float distanc
 #elif 1
 
 	// Alternative method
+	// todo: take into account m_EyePosition
 
 	NLMISC::CVector vec = CVector(0.f, -distance, 0.f);
 	NLMISC::CVector ipd;
-	if (m_Stage % 2) ipd = CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * -0.5f, 0.f, 0.f);
+	if (m_Stage % 2) ipd = CVector((m_DevicePtr->HMDInfo.InterpupillaryDistance * m_Scale) * -0.5f, 0.f, 0.f);
-	else ipd = CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * 0.5f, 0.f, 0.f);
+	else ipd = CVector((m_DevicePtr->HMDInfo.InterpupillaryDistance * m_Scale) * 0.5f, 0.f, 0.f);
 	
 
 	NLMISC::CQuat rot = getOrientation();
@@ -640,6 +643,22 @@ void CStereoOVR::getInterface2DShift(uint cid, float &x, float &y, float distanc
 #endif
 }
 
+void CStereoOVR::setEyePosition(const NLMISC::CVector &v)
+{
+	m_EyePosition = v;
+}
+
+const NLMISC::CVector &CStereoOVR::getEyePosition() const
+{
+	return m_EyePosition;
+}
+
+void CStereoOVR::setScale(float s)
+{
+	m_EyePosition = m_EyePosition * (s / m_Scale);
+	m_Scale = s;
+}
+
 void CStereoOVR::listDevices(std::vector<CStereoDeviceInfo> &devicesOut)
 {
 	s_StereoOVRSystem.Init();

code/snowballs2/client/src/camera.cpp

@@ -119,6 +119,7 @@ void	initCamera()
 				{
 					nlinfo("Stereo display device is a HMD");
 					StereoHMD = static_cast<IStereoHMD *>(StereoDisplay);
+					StereoHMD->setScale(3.0f); // snowballs is about 4 units per meter
 				}
 				StereoDisplay->setDriver(Driver); // move after driver creation, move stereodisplay before driver creation
 			}
@@ -189,7 +190,9 @@ void updateCamera()
 		NLMISC::CMatrix camMatrix = Camera.getMatrix();
 		NLMISC::CMatrix hmdMatrix;
 		hmdMatrix.setRot(hmdOrient);
-		Camera.setMatrix(camMatrix * hmdMatrix);
+		NLMISC::CMatrix posMatrix; // minimal head modeling, will be changed in the future
+		posMatrix.translate(StereoHMD->getEyePosition());
+		Camera.setMatrix((camMatrix * hmdMatrix) * posMatrix);
 	}
 	// Set the new position of the snow emitter
 	CMatrix	mat = CMatrix::Identity;

code/snowballs2/client/src/commands.cpp

@@ -388,7 +388,7 @@ void	updateCommands()
 	if (StereoHMD)
 	{
 		float xshift, yshift;
-		StereoHMD->getInterface2DShift(0, xshift, yshift, 1.f);
+		StereoHMD->getInterface2DShift(0, xshift, yshift, 4.f);
 		// snap to pixels
 		xshift = ((float)(sint32)(xshift * width)) / width;
 		yshift = ((float)(sint32)(yshift * height)) / height;

code/snowballs2/client/src/compass.cpp

@@ -98,7 +98,7 @@ void updateCompass ()
 	if (StereoHMD)
 	{
 		float xshift, yshift;
-		StereoHMD->getInterface2DShift(0, xshift, yshift, 1.f);
+		StereoHMD->getInterface2DShift(0, xshift, yshift, 4.f);
 		x += xshift;
 		y += yshift;
 	}

code/snowballs2/client/src/snowballs_client.cpp

@@ -933,6 +933,8 @@ void renderInformation()
 	TextContext->setColor(CRGBA(255, 255, 255, 255));
 	TextContext->setFontSize(14);
 	TextContext->printfAt(0.01f, 0.99f, "%.2f(%.2f)fps %.3fs", FramesPerSecondSmooth, FramesPerSecond, (float)LocalTimeDelta);
+	CVector camPos = Camera.getMatrix().getPos();
+	TextContext->printfAt(0.01f, 0.89f, "CAM POS: %.3f %.3f %.3f", camPos.x, camPos.y, camPos.z);
 
 	// one more frame
 	FpsGraph.addValue(1.0f);