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114 lines
2.9 KiB
C++
114 lines
2.9 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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#include "Cry3DEngine_precompiled.h"
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#include "IndexedMesh.h"
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#include "MeshCompiler/MeshCompiler.h"
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DEFINE_INTRUSIVE_LINKED_LIST(CIndexedMesh)
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CIndexedMesh::CIndexedMesh()
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{
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}
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CIndexedMesh::~CIndexedMesh()
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{
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}
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void CIndexedMesh::GetMemoryUsage(ICrySizer* pSizer) const
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{
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pSizer->AddObject(this, sizeof(*this));
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CMesh::GetMemoryUsage(pSizer);
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}
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void CIndexedMesh::RestoreFacesFromIndices()
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{
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const int indexCount = GetIndexCount();
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SetFaceCount(indexCount / 3);
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memset(m_pFaces, 0, GetFaceCount() * sizeof(m_pFaces[0]));
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int nFaceId = 0;
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for (int i = 0; i < indexCount; i += 3)
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{
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if (m_pIndices[i] != (vtx_idx) - 1) // deleted faces have -1 here
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{
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for (int v = 0; v < 3; ++v)
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{
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assert((int)m_pIndices[i + v] < GetVertexCount());
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m_pFaces[nFaceId].v[v] = m_pIndices[i + v];
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}
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++nFaceId;
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}
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}
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SetFaceCount(nFaceId);
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}
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void CIndexedMesh::Optimize(const char* szComment)
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{
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mesh_compiler::CMeshCompiler meshCompiler;
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if (szComment)
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{
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// mesh_compiler::MESH_COMPILE_OPTIMIZE is a bit expensive so we show a warning if it's used at run time
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Warning("CIndexedMesh::Optimize is called at run time by %s", szComment);
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}
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if (!meshCompiler.Compile(*this, (mesh_compiler::MESH_COMPILE_TANGENTS | mesh_compiler::MESH_COMPILE_OPTIMIZE)))
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{
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Warning("CIndexedMesh::Optimize failed: %s", meshCompiler.GetLastError());
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}
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}
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void CIndexedMesh::CalcBBox()
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{
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const int vertexCount = GetVertexCount();
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if (vertexCount == 0 || !m_pPositions)
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{
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m_bbox = AABB(Vec3(0, 0, 0), Vec3(0, 0, 0));
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return;
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}
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assert(m_pPositionsF16 == 0);
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m_bbox.Reset();
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const int faceCount = GetFaceCount();
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if (faceCount > 0)
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{
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for (int i = 0; i < faceCount; ++i)
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{
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for (int v = 0; v < 3; ++v)
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{
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const int nIndex = m_pFaces[i].v[v];
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assert(nIndex >= 0 && nIndex < vertexCount);
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m_bbox.Add(m_pPositions[nIndex]);
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}
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}
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}
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else
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{
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const int indexCount = GetIndexCount();
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for (int i = 0; i < indexCount; ++i)
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{
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m_bbox.Add(m_pPositions[m_pIndices[i]]);
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}
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}
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}
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