Init

physx/samples/samplebase/SampleCamera.h

@@ -0,0 +1,157 @@
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
+
+#ifndef SAMPLE_CAMERA_H
+#define SAMPLE_CAMERA_H
+
+#include "SampleAllocator.h"
+#include "RendererProjection.h"
+#include "foundation/PxPlane.h"
+
+	class RenderPhysX3Debug;
+
+	struct Viewport : public SampleAllocateable
+	{
+				Viewport() : mClientWidth(0), mClientHeight(0), mWindowWidth(0), mWindowHeight(0)	{}
+
+		PxU32	mClientWidth;
+		PxU32	mClientHeight;
+		PxU32	mWindowWidth;
+		PxU32	mWindowHeight;
+
+		PX_FORCE_INLINE	PxReal	computeRatio()	const	{ return PxReal(mWindowWidth)/PxReal(mWindowHeight);	}
+	};
+
+	enum PlaneAABBCode
+	{
+		PLANEAABB_EXCLUSION,
+		PLANEAABB_INTERSECT,
+		PLANEAABB_INCLUSION
+	};
+
+	class Camera : public SampleAllocateable
+	{
+		public:
+													Camera();
+													~Camera();
+
+		///////////////////////////////////////////////////////////////////////////////
+
+		// Projection part
+
+		PX_FORCE_INLINE	PxReal						getFOV()			const	{ return mFOV;						}
+		PX_FORCE_INLINE	PxReal						getNearPlane()		const	{ return mNearPlane;				}
+		PX_FORCE_INLINE	PxReal						getFarPlane()		const	{ return mFarPlane;					}
+		PX_FORCE_INLINE	PxU32						getScreenWidth()	const	{ return mViewport.mClientWidth;	}
+		PX_FORCE_INLINE	PxU32						getScreenHeight()	const	{ return mViewport.mClientHeight;	}
+
+		PX_FORCE_INLINE	void						setFOV(PxReal fov)			{ mFOV			= fov;	mDirtyProj = true;	}
+		PX_FORCE_INLINE	void						setNearPlane(PxReal d)		{ mNearPlane	= d;	mDirtyProj = true;	}
+		PX_FORCE_INLINE	void						setFarPlane(PxReal d)		{ mFarPlane		= d;	mDirtyProj = true;	}
+		PX_FORCE_INLINE	void						setScreenSize(PxU32 clientWidth, PxU32 clientHeight, PxU32 windowWidth, PxU32 windowHeight)
+													{
+														mViewport.mClientWidth	= clientWidth;
+														mViewport.mClientHeight	= clientHeight;
+														mViewport.mWindowWidth	= windowWidth;
+														mViewport.mWindowHeight	= windowHeight;
+														mDirtyProj				= true;
+													}
+
+		PX_FORCE_INLINE	const SampleRenderer::RendererProjection&
+													getProjMatrix()		const
+													{
+														if(mDirtyProj)
+															const_cast<Camera*>(this)->updateInternals();
+
+														return mProjMatrix;
+													}
+
+		///////////////////////////////////////////////////////////////////////////////
+
+		// View part
+
+		PX_FORCE_INLINE	const PxVec3&				getPos()					const	{ return mPos;								}
+		PX_FORCE_INLINE	const PxVec3&				getRot()					const	{ return mRot;								}
+
+		PX_FORCE_INLINE	void						setPos(const PxVec3& pos)			{ mPos = pos;			mDirtyView = true;	}
+		PX_FORCE_INLINE	void						setRot(const PxVec3& rot)			{ mRot = rot;			mDirtyView = true;	}
+		PX_FORCE_INLINE	void						setView(const PxTransform& view)	{ mViewMatrix = view;	mPos = view.p; mDirtyView = false;	}
+
+		PX_FORCE_INLINE	const PxTransform&			getViewMatrix()				const
+													{
+														if(mDirtyView)
+															const_cast<Camera*>(this)->updateInternals();
+
+														return mViewMatrix;
+													}
+
+						PxVec3						getViewDir()				const;
+						void						lookAt(const PxVec3& position, const PxVec3& target);
+
+		///////////////////////////////////////////////////////////////////////////////
+
+		PX_FORCE_INLINE	const PxVec3*				getFrustumVerts()	const	{ return mFrustum;	}
+
+		///////////////////////////////////////////////////////////////////////////////
+
+		// Culling
+
+						PlaneAABBCode				cull(const PxBounds3& aabb)	const;
+						bool						mDrawDebugData;
+						bool						mFreezeFrustum;
+						bool						mPerformVFC;
+
+		///////////////////////////////////////////////////////////////////////////////
+
+						void						drawDebug(RenderPhysX3Debug*);
+		private:
+		mutable			SampleRenderer::RendererProjection
+													mProjMatrix;
+		mutable			PxTransform					mViewMatrix;
+
+						PxVec3						mPos;
+						PxVec3						mRot;
+
+						Viewport					mViewport;
+						PxReal						mFOV;
+						PxReal						mNearPlane;
+						PxReal						mFarPlane;
+
+						PxVec3						mFrustum[8];	//!< Frustum's vertices
+						PxPlane						mPlanes[6];		//!< Frustum's planes
+
+						bool						mDirtyProj;
+						bool						mDirtyView;
+
+						void						updateInternals();
+	public:
+						void						BuildFrustum();
+	};
+
+#endif