alexpete
104 lines
3.8 KiB
C++
104 lines
3.8 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#ifndef CRYINCLUDE_CRY3DENGINE_RENDERMESHUTILS_H
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#define CRYINCLUDE_CRY3DENGINE_RENDERMESHUTILS_H
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#pragma once
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struct SIntersectionData;
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//////////////////////////////////////////////////////////////////////////
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// RenderMesh utilities.
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//////////////////////////////////////////////////////////////////////////
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class CRenderMeshUtils
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: public Cry3DEngineBase
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{
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public:
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// Do a render-mesh vs Ray intersection, return true for intersection.
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static bool RayIntersection(IRenderMesh* pRenderMesh, SRayHitInfo& hitInfo, _smart_ptr<IMaterial> pMtl = 0);
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static bool RayIntersectionFast(IRenderMesh* pRenderMesh, SRayHitInfo& hitInfo, _smart_ptr<IMaterial> pCustomMtl = 0);
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// async versions, aren't using the cache, and are used by the deferredrayintersection class
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static void RayIntersectionAsync(SIntersectionData* pIntersectionRMData);
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static void ClearHitCache();
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//////////////////////////////////////////////////////////////////////////
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//void FindCollisionWithRenderMesh( IRenderMesh *pRenderMesh, SRayHitInfo &hitInfo );
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// void FindCollisionWithRenderMesh( IPhysiIRenderMesh2 *pRenderMesh, SRayHitInfo &hitInfo );
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private:
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// functions implementing the logic for RayIntersection
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static bool RayIntersectionImpl(SIntersectionData* pIntersectionRMData, SRayHitInfo* phitInfo, _smart_ptr<IMaterial> pCustomMtl, bool bAsync);
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static bool RayIntersectionFastImpl(SIntersectionData& rIntersectionRMData, SRayHitInfo& hitInfo, _smart_ptr<IMaterial> pCustomMtl, bool bAsync);
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static bool ProcessBoxIntersection(Ray& inRay, SRayHitInfo& hitInfo, SIntersectionData& rIntersectionRMData, _smart_ptr<IMaterial> pMtl, vtx_idx* pInds, int nVerts, uint8* pPos, int nPosStride, uint8* pUV, int nUVStride, uint8* pCol, int nColStride, int nInds, bool& bAnyHit, float& fBestDist, Vec3& vHitPos, Vec3* tri);
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};
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// struct to collect parameters for the wrapped RayInterseciton functions
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struct SIntersectionData
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{
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SIntersectionData()
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: pRenderMesh(NULL)
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, nVerts(0)
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, nInds(0)
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, nPosStride(0)
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, pPos(NULL)
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, pInds(NULL)
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, nUVStride(0)
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, pUV(NULL)
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, nColStride(0)
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, pCol(NULL)
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, nTangsStride(0)
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, pTangs(NULL)
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, bResult(false)
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, bNeedFallback(false)
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, fDecalPlacementTestMaxSize(1000.f)
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, bDecalPlacementTestRequested(false)
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, pHitInfo(0)
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, pMtl(0)
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{
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}
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bool Init(IRenderMesh* pRenderMesh, SRayHitInfo* _pHitInfo, _smart_ptr<IMaterial> _pMtl, bool _bRequestDecalPlacementTest = false);
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IRenderMesh* pRenderMesh;
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SRayHitInfo* pHitInfo;
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_smart_ptr<IMaterial> pMtl;
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bool bDecalPlacementTestRequested;
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int nVerts;
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int nInds;
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int nPosStride;
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uint8* pPos;
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vtx_idx* pInds;
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int nUVStride;
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uint8* pUV;
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int nColStride;
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uint8* pCol;
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int nTangsStride;
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byte* pTangs;
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bool bResult;
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float fDecalPlacementTestMaxSize; // decal will look acceptable in this place
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bool bNeedFallback;
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};
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template <class T>
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bool GetBarycentricCoordinates(const T& a, const T& b, const T& c, const T& p, float& u, float& v, float& w, float fBorder = 0.f);
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#endif // CRYINCLUDE_CRY3DENGINE_RENDERMESHUTILS_H
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