delete src/mesh/assimp-master

1 files changed, 0 insertions, 889 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/SIB/SIBImporter.cpp b/src/mesh/assimp-master/code/AssetLib/SIB/SIBImporter.cpp
deleted file mode 100644
index 7b66afa..0000000
--- a/src/mesh/assimp-master/code/AssetLib/SIB/SIBImporter.cpp
+++ /dev/null
@@ -1,889 +0,0 @@
-/*
----------------------------------------------------------------------------
-Open Asset Import Library (assimp)
----------------------------------------------------------------------------
-
-Copyright (c) 2006-2022, assimp team
-
-All rights reserved.
-
-Redistribution and use of this software 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 the assimp team, nor the names of its
-  contributors may be used to endorse or promote products
-  derived from this software without specific prior
-  written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"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.
----------------------------------------------------------------------------
-*/
-
-/** @file  SIBImporter.cpp
- *  @brief Implementation of the SIB importer class.
- *
- *  The Nevercenter Silo SIB format is undocumented.
- *  All details here have been reverse engineered from
- *  studying the binary files output by Silo.
- *
- *  Nevertheless, this implementation is reasonably complete.
- */
-
-#ifndef ASSIMP_BUILD_NO_SIB_IMPORTER
-
-// internal headers
-#include "SIBImporter.h"
-#include <assimp/ByteSwapper.h>
-#include <assimp/StreamReader.h>
-#include <assimp/TinyFormatter.h>
-#ifdef ASSIMP_USE_HUNTER
-#include <utf8.h>
-#else
-#include "../contrib/utf8cpp/source/utf8.h"
-#endif
-#include <assimp/importerdesc.h>
-#include <assimp/scene.h>
-#include <assimp/DefaultLogger.hpp>
-#include <assimp/IOSystem.hpp>
-#include <assimp/StringUtils.h>
-
-#include <map>
-
-using namespace Assimp;
-
-static const aiImporterDesc desc = {
-    "Silo SIB Importer",
-    "Richard Mitton (http://www.codersnotes.com/about)",
-    "",
-    "Does not apply subdivision.",
-    aiImporterFlags_SupportBinaryFlavour,
-    0, 0,
-    0, 0,
-    "sib"
-};
-
-struct SIBChunk {
-    uint32_t Tag;
-    uint32_t Size;
-} PACK_STRUCT;
-
-enum {
-    POS,
-    NRM,
-    UV,
-    N
-};
-
-typedef std::pair<uint32_t, uint32_t> SIBPair;
-
-struct SIBEdge {
-    uint32_t faceA, faceB;
-    bool creased;
-};
-
-struct SIBMesh {
-    aiMatrix4x4 axis;
-    uint32_t numPts;
-    std::vector<aiVector3D> pos, nrm, uv;
-    std::vector<uint32_t> idx;
-    std::vector<uint32_t> faceStart;
-    std::vector<uint32_t> mtls;
-    std::vector<SIBEdge> edges;
-    std::map<SIBPair, uint32_t> edgeMap;
-};
-
-struct SIBObject {
-    aiString name;
-    aiMatrix4x4 axis;
-    size_t meshIdx, meshCount;
-};
-
-struct SIB {
-    std::vector<aiMaterial *> mtls;
-    std::vector<aiMesh *> meshes;
-    std::vector<aiLight *> lights;
-    std::vector<SIBObject> objs, insts;
-};
-
-// ------------------------------------------------------------------------------------------------
-static SIBEdge &GetEdge(SIBMesh *mesh, uint32_t posA, uint32_t posB) {
-    SIBPair pair = (posA < posB) ? SIBPair(posA, posB) : SIBPair(posB, posA);
-    std::map<SIBPair, uint32_t>::iterator it = mesh->edgeMap.find(pair);
-    if (it != mesh->edgeMap.end())
-        return mesh->edges[it->second];
-
-    SIBEdge edge;
-    edge.creased = false;
-    edge.faceA = edge.faceB = 0xffffffff;
-    mesh->edgeMap[pair] = static_cast<uint32_t>(mesh->edges.size());
-    mesh->edges.push_back(edge);
-    return mesh->edges.back();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Helpers for reading chunked data.
-
-#define TAG(A, B, C, D) ((A << 24) | (B << 16) | (C << 8) | D)
-
-static SIBChunk ReadChunk(StreamReaderLE *stream) {
-    SIBChunk chunk;
-    chunk.Tag = stream->GetU4();
-    chunk.Size = stream->GetU4();
-    if (chunk.Size > stream->GetRemainingSizeToLimit())
-        ASSIMP_LOG_ERROR("SIB: Chunk overflow");
-    ByteSwap::Swap4(&chunk.Tag);
-    return chunk;
-}
-
-static aiColor3D ReadColor(StreamReaderLE *stream) {
-    float r = stream->GetF4();
-    float g = stream->GetF4();
-    float b = stream->GetF4();
-    stream->GetU4(); // Colors have an unused(?) 4th component.
-    return aiColor3D(r, g, b);
-}
-
-static void UnknownChunk(StreamReaderLE * /*stream*/, const SIBChunk &chunk) {
-    char temp[4] = {
-        static_cast<char>((chunk.Tag >> 24) & 0xff),
-        static_cast<char>((chunk.Tag >> 16) & 0xff),
-        static_cast<char>((chunk.Tag >> 8) & 0xff),
-        static_cast<char>(chunk.Tag & 0xff)
-    };
-
-    ASSIMP_LOG_WARN("SIB: Skipping unknown '", ai_str_toprintable(temp, 4), "' chunk.");
-}
-
-// Reads a UTF-16LE string and returns it at UTF-8.
-static aiString ReadString(StreamReaderLE *stream, uint32_t numWChars) {
-    if (nullptr == stream || 0 == numWChars) {
-        return aiString();
-    }
-
-    // Allocate buffers (max expansion is 1 byte -> 4 bytes for UTF-8)
-    std::vector<unsigned char> str;
-    str.reserve(numWChars * 4 + 1);
-    uint16_t *temp = new uint16_t[numWChars];
-    for (uint32_t n = 0; n < numWChars; ++n) {
-        temp[n] = stream->GetU2();
-    }
-
-    // Convert it and NUL-terminate.
-    const uint16_t *start(temp), *end(temp + numWChars);
-    utf8::utf16to8(start, end, back_inserter(str));
-    str[str.size() - 1] = '\0';
-
-    // Return the final string.
-    aiString result = aiString((const char *)&str[0]);
-    delete[] temp;
-
-    return result;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Constructor to be privately used by Importer
-SIBImporter::SIBImporter() {
-    // empty
-}
-
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-SIBImporter::~SIBImporter() {
-    // empty
-}
-
-// ------------------------------------------------------------------------------------------------
-// Returns whether the class can handle the format of the given file.
-bool SIBImporter::CanRead(const std::string &filename, IOSystem * /*pIOHandler*/, bool /*checkSig*/) const {
-    return SimpleExtensionCheck(filename, "sib");
-}
-
-// ------------------------------------------------------------------------------------------------
-const aiImporterDesc *SIBImporter::GetInfo() const {
-    return &desc;
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadVerts(SIBMesh *mesh, StreamReaderLE *stream, uint32_t count) {
-    if (nullptr == mesh || nullptr == stream) {
-        return;
-    }
-
-    mesh->pos.resize(count);
-    for (uint32_t n = 0; n < count; ++n) {
-        mesh->pos[n].x = stream->GetF4();
-        mesh->pos[n].y = stream->GetF4();
-        mesh->pos[n].z = stream->GetF4();
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadFaces(SIBMesh *mesh, StreamReaderLE *stream) {
-    uint32_t ptIdx = 0;
-    while (stream->GetRemainingSizeToLimit() > 0) {
-        uint32_t numPoints = stream->GetU4();
-
-        // Store room for the N index channels, plus the point count.
-        size_t pos = mesh->idx.size() + 1;
-        mesh->idx.resize(pos + numPoints * N);
-        mesh->idx[pos - 1] = numPoints;
-        uint32_t *idx = &mesh->idx[pos];
-
-        mesh->faceStart.push_back(static_cast<uint32_t>(pos - 1));
-        mesh->mtls.push_back(0);
-
-        // Read all the position data.
-        // UV/normals will be supplied later.
-        // Positions are supplied indexed already, so we preserve that
-        // mapping. UVs are supplied uniquely, so we allocate unique indices.
-        for (uint32_t n = 0; n < numPoints; n++, idx += N, ptIdx++) {
-            uint32_t p = stream->GetU4();
-            if (p >= mesh->pos.size())
-                throw DeadlyImportError("Vertex index is out of range.");
-            idx[POS] = p;
-            idx[NRM] = ptIdx;
-            idx[UV] = ptIdx;
-        }
-    }
-
-    // Allocate data channels for normals/UVs.
-    mesh->nrm.resize(ptIdx, aiVector3D(0, 0, 0));
-    mesh->uv.resize(ptIdx, aiVector3D(0, 0, 0));
-
-    mesh->numPts = ptIdx;
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadUVs(SIBMesh *mesh, StreamReaderLE *stream) {
-    while (stream->GetRemainingSizeToLimit() > 0) {
-        uint32_t faceIdx = stream->GetU4();
-        uint32_t numPoints = stream->GetU4();
-
-        if (faceIdx >= mesh->faceStart.size())
-            throw DeadlyImportError("Invalid face index.");
-
-        uint32_t pos = mesh->faceStart[faceIdx];
-        uint32_t *idx = &mesh->idx[pos + 1];
-
-        for (uint32_t n = 0; n < numPoints; n++, idx += N) {
-            uint32_t id = idx[UV];
-            mesh->uv[id].x = stream->GetF4();
-            mesh->uv[id].y = stream->GetF4();
-        }
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadMtls(SIBMesh *mesh, StreamReaderLE *stream) {
-    // Material assignments are stored run-length encoded.
-    // Also, we add 1 to each material so that we can use mtl #0
-    // as the default material.
-    uint32_t prevFace = stream->GetU4();
-    uint32_t prevMtl = stream->GetU4() + 1;
-    while (stream->GetRemainingSizeToLimit() > 0) {
-        uint32_t face = stream->GetU4();
-        uint32_t mtl = stream->GetU4() + 1;
-        while (prevFace < face) {
-            if (prevFace >= mesh->mtls.size())
-                throw DeadlyImportError("Invalid face index.");
-            mesh->mtls[prevFace++] = prevMtl;
-        }
-
-        prevFace = face;
-        prevMtl = mtl;
-    }
-
-    while (prevFace < mesh->mtls.size())
-        mesh->mtls[prevFace++] = prevMtl;
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadAxis(aiMatrix4x4 &axis, StreamReaderLE *stream) {
-    axis.a4 = stream->GetF4();
-    axis.b4 = stream->GetF4();
-    axis.c4 = stream->GetF4();
-    axis.d4 = 1;
-    axis.a1 = stream->GetF4();
-    axis.b1 = stream->GetF4();
-    axis.c1 = stream->GetF4();
-    axis.d1 = 0;
-    axis.a2 = stream->GetF4();
-    axis.b2 = stream->GetF4();
-    axis.c2 = stream->GetF4();
-    axis.d2 = 0;
-    axis.a3 = stream->GetF4();
-    axis.b3 = stream->GetF4();
-    axis.c3 = stream->GetF4();
-    axis.d3 = 0;
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadEdges(SIBMesh *mesh, StreamReaderLE *stream) {
-    while (stream->GetRemainingSizeToLimit() > 0) {
-        uint32_t posA = stream->GetU4();
-        uint32_t posB = stream->GetU4();
-        GetEdge(mesh, posA, posB);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadCreases(SIBMesh *mesh, StreamReaderLE *stream) {
-    while (stream->GetRemainingSizeToLimit() > 0) {
-        uint32_t edge = stream->GetU4();
-        if (edge >= mesh->edges.size())
-            throw DeadlyImportError("SIB: Invalid edge index.");
-        mesh->edges[edge].creased = true;
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ConnectFaces(SIBMesh *mesh) {
-    // Find faces connected to each edge.
-    size_t numFaces = mesh->faceStart.size();
-    for (size_t faceIdx = 0; faceIdx < numFaces; faceIdx++) {
-        uint32_t *idx = &mesh->idx[mesh->faceStart[faceIdx]];
-        uint32_t numPoints = *idx++;
-        uint32_t prev = idx[(numPoints - 1) * N + POS];
-
-        for (uint32_t i = 0; i < numPoints; i++, idx += N) {
-            uint32_t next = idx[POS];
-
-            // Find this edge.
-            SIBEdge &edge = GetEdge(mesh, prev, next);
-
-            // Link this face onto it.
-            // This gives potentially undesirable normals when used
-            // with non-2-manifold surfaces, but then so does Silo to begin with.
-            if (edge.faceA == 0xffffffff)
-                edge.faceA = static_cast<uint32_t>(faceIdx);
-            else if (edge.faceB == 0xffffffff)
-                edge.faceB = static_cast<uint32_t>(faceIdx);
-
-            prev = next;
-        }
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-static aiVector3D CalculateVertexNormal(SIBMesh *mesh, uint32_t faceIdx, uint32_t pos,
-        const std::vector<aiVector3D> &faceNormals) {
-    // Creased edges complicate this. We need to find the start/end range of the
-    // ring of faces that touch this position.
-    // We do this in two passes. The first pass is to find the end of the range,
-    // the second is to work backwards to the start and calculate the final normal.
-    aiVector3D vtxNormal;
-    for (int pass = 0; pass < 2; pass++) {
-        vtxNormal = aiVector3D(0, 0, 0);
-        uint32_t startFaceIdx = faceIdx;
-        uint32_t prevFaceIdx = faceIdx;
-
-        // Process each connected face.
-        while (true) {
-            // Accumulate the face normal.
-            vtxNormal += faceNormals[faceIdx];
-
-            uint32_t nextFaceIdx = 0xffffffff;
-
-            // Move to the next edge sharing this position.
-            uint32_t *idx = &mesh->idx[mesh->faceStart[faceIdx]];
-            uint32_t numPoints = *idx++;
-            uint32_t posA = idx[(numPoints - 1) * N + POS];
-            for (uint32_t n = 0; n < numPoints; n++, idx += N) {
-                uint32_t posB = idx[POS];
-
-                // Test if this edge shares our target position.
-                if (posA == pos || posB == pos) {
-                    SIBEdge &edge = GetEdge(mesh, posA, posB);
-
-                    // Non-manifold meshes can produce faces which share
-                    // positions but have no edge entry, so check it.
-                    if (edge.faceA == faceIdx || edge.faceB == faceIdx) {
-                        // Move to whichever side we didn't just come from.
-                        if (!edge.creased) {
-                            if (edge.faceA != prevFaceIdx && edge.faceA != faceIdx && edge.faceA != 0xffffffff)
-                                nextFaceIdx = edge.faceA;
-                            else if (edge.faceB != prevFaceIdx && edge.faceB != faceIdx && edge.faceB != 0xffffffff)
-                                nextFaceIdx = edge.faceB;
-                        }
-                    }
-                }
-
-                posA = posB;
-            }
-
-            // Stop once we hit either an creased/unconnected edge, or we
-            // wrapped around and hit our start point.
-            if (nextFaceIdx == 0xffffffff || nextFaceIdx == startFaceIdx)
-                break;
-
-            prevFaceIdx = faceIdx;
-            faceIdx = nextFaceIdx;
-        }
-    }
-
-    // Normalize it.
-    float len = vtxNormal.Length();
-    if (len > 0.000000001f)
-        vtxNormal /= len;
-    return vtxNormal;
-}
-
-// ------------------------------------------------------------------------------------------------
-static void CalculateNormals(SIBMesh *mesh) {
-    size_t numFaces = mesh->faceStart.size();
-
-    // Calculate face normals.
-    std::vector<aiVector3D> faceNormals(numFaces);
-    for (size_t faceIdx = 0; faceIdx < numFaces; faceIdx++) {
-        uint32_t *idx = &mesh->idx[mesh->faceStart[faceIdx]];
-        uint32_t numPoints = *idx++;
-
-        aiVector3D faceNormal(0, 0, 0);
-
-        uint32_t *prev = &idx[(numPoints - 1) * N];
-
-        for (uint32_t i = 0; i < numPoints; i++) {
-            uint32_t *next = &idx[i * N];
-
-            faceNormal += mesh->pos[prev[POS]] ^ mesh->pos[next[POS]];
-            prev = next;
-        }
-
-        faceNormals[faceIdx] = faceNormal;
-    }
-
-    // Calculate vertex normals.
-    for (size_t faceIdx = 0; faceIdx < numFaces; faceIdx++) {
-        uint32_t *idx = &mesh->idx[mesh->faceStart[faceIdx]];
-        uint32_t numPoints = *idx++;
-
-        for (uint32_t i = 0; i < numPoints; i++) {
-            uint32_t pos = idx[i * N + POS];
-            uint32_t nrm = idx[i * N + NRM];
-            aiVector3D vtxNorm = CalculateVertexNormal(mesh, static_cast<uint32_t>(faceIdx), pos, faceNormals);
-            mesh->nrm[nrm] = vtxNorm;
-        }
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-struct TempMesh {
-    std::vector<aiVector3D> vtx;
-    std::vector<aiVector3D> nrm;
-    std::vector<aiVector3D> uv;
-    std::vector<aiFace> faces;
-};
-
-static void ReadShape(SIB *sib, StreamReaderLE *stream) {
-    SIBMesh smesh;
-    aiString name;
-
-    while (stream->GetRemainingSizeToLimit() >= sizeof(SIBChunk)) {
-        SIBChunk chunk = ReadChunk(stream);
-        unsigned oldLimit = stream->SetReadLimit(stream->GetCurrentPos() + chunk.Size);
-
-        switch (chunk.Tag) {
-        case TAG('M', 'I', 'R', 'P'): break; // mirror plane maybe?
-        case TAG('I', 'M', 'R', 'P'): break; // instance mirror? (not supported here yet)
-        case TAG('D', 'I', 'N', 'F'): break; // display info, not needed
-        case TAG('P', 'I', 'N', 'F'): break; // ?
-        case TAG('V', 'M', 'I', 'R'): break; // ?
-        case TAG('F', 'M', 'I', 'R'): break; // ?
-        case TAG('T', 'X', 'S', 'M'): break; // ?
-        case TAG('F', 'A', 'H', 'S'): break; // ?
-        case TAG('V', 'R', 'T', 'S'): ReadVerts(&smesh, stream, chunk.Size / 12); break;
-        case TAG('F', 'A', 'C', 'S'): ReadFaces(&smesh, stream); break;
-        case TAG('F', 'T', 'V', 'S'): ReadUVs(&smesh, stream); break;
-        case TAG('S', 'N', 'A', 'M'): name = ReadString(stream, chunk.Size / 2); break;
-        case TAG('F', 'A', 'M', 'A'): ReadMtls(&smesh, stream); break;
-        case TAG('A', 'X', 'I', 'S'): ReadAxis(smesh.axis, stream); break;
-        case TAG('E', 'D', 'G', 'S'): ReadEdges(&smesh, stream); break;
-        case TAG('E', 'C', 'R', 'S'): ReadCreases(&smesh, stream); break;
-        default: UnknownChunk(stream, chunk); break;
-        }
-
-        stream->SetCurrentPos(stream->GetReadLimit());
-        stream->SetReadLimit(oldLimit);
-    }
-
-    ai_assert(smesh.faceStart.size() == smesh.mtls.size()); // sanity check
-
-    // Silo doesn't store any normals in the file - we need to compute
-    // them ourselves. We can't let AssImp handle it as AssImp doesn't
-    // know about our creased edges.
-    ConnectFaces(&smesh);
-    CalculateNormals(&smesh);
-
-    // Construct the transforms.
-    aiMatrix4x4 worldToLocal = smesh.axis;
-    worldToLocal.Inverse();
-    aiMatrix4x4 worldToLocalN = worldToLocal;
-    worldToLocalN.a4 = worldToLocalN.b4 = worldToLocalN.c4 = 0.0f;
-    worldToLocalN.Inverse().Transpose();
-
-    // Allocate final mesh data.
-    // We'll allocate one mesh for each material. (we'll strip unused ones after)
-    std::vector<TempMesh> meshes(sib->mtls.size());
-
-    // Un-index the source data and apply to each vertex.
-    for (unsigned fi = 0; fi < smesh.faceStart.size(); fi++) {
-        uint32_t start = smesh.faceStart[fi];
-        uint32_t mtl = smesh.mtls[fi];
-        uint32_t *idx = &smesh.idx[start];
-
-        if (mtl >= meshes.size()) {
-            ASSIMP_LOG_ERROR("SIB: Face material index is invalid.");
-            mtl = 0;
-        }
-
-        TempMesh &dest = meshes[mtl];
-
-        aiFace face;
-        face.mNumIndices = *idx++;
-        face.mIndices = new unsigned[face.mNumIndices];
-        for (unsigned pt = 0; pt < face.mNumIndices; pt++, idx += N) {
-            size_t vtxIdx = dest.vtx.size();
-            face.mIndices[pt] = static_cast<unsigned int>(vtxIdx);
-
-            // De-index it. We don't need to validate here as
-            // we did it when creating the data.
-            aiVector3D pos = smesh.pos[idx[POS]];
-            aiVector3D nrm = smesh.nrm[idx[NRM]];
-            aiVector3D uv = smesh.uv[idx[UV]];
-
-            // The verts are supplied in world-space, so let's
-            // transform them back into the local space of this mesh:
-            pos = worldToLocal * pos;
-            nrm = worldToLocalN * nrm;
-
-            dest.vtx.push_back(pos);
-            dest.nrm.push_back(nrm);
-            dest.uv.push_back(uv);
-        }
-        dest.faces.push_back(face);
-    }
-
-    SIBObject obj;
-    obj.name = name;
-    obj.axis = smesh.axis;
-    obj.meshIdx = sib->meshes.size();
-
-    // Now that we know the size of everything,
-    // we can build the final one-material-per-mesh data.
-    for (size_t n = 0; n < meshes.size(); n++) {
-        TempMesh &src = meshes[n];
-        if (src.faces.empty())
-            continue;
-
-        aiMesh *mesh = new aiMesh;
-        mesh->mName = name;
-        mesh->mNumFaces = static_cast<unsigned int>(src.faces.size());
-        mesh->mFaces = new aiFace[mesh->mNumFaces];
-        mesh->mNumVertices = static_cast<unsigned int>(src.vtx.size());
-        mesh->mVertices = new aiVector3D[mesh->mNumVertices];
-        mesh->mNormals = new aiVector3D[mesh->mNumVertices];
-        mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
-        mesh->mNumUVComponents[0] = 2;
-        mesh->mMaterialIndex = static_cast<unsigned int>(n);
-
-        for (unsigned i = 0; i < mesh->mNumVertices; i++) {
-            mesh->mVertices[i] = src.vtx[i];
-            mesh->mNormals[i] = src.nrm[i];
-            mesh->mTextureCoords[0][i] = src.uv[i];
-        }
-        for (unsigned i = 0; i < mesh->mNumFaces; i++) {
-            mesh->mFaces[i] = src.faces[i];
-        }
-
-        sib->meshes.push_back(mesh);
-    }
-
-    obj.meshCount = sib->meshes.size() - obj.meshIdx;
-    sib->objs.push_back(obj);
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadMaterial(SIB *sib, StreamReaderLE *stream) {
-    aiColor3D diff = ReadColor(stream);
-    aiColor3D ambi = ReadColor(stream);
-    aiColor3D spec = ReadColor(stream);
-    aiColor3D emis = ReadColor(stream);
-    float shiny = (float)stream->GetU4();
-
-    uint32_t nameLen = stream->GetU4();
-    aiString name = ReadString(stream, nameLen / 2);
-    uint32_t texLen = stream->GetU4();
-    aiString tex = ReadString(stream, texLen / 2);
-
-    aiMaterial *mtl = new aiMaterial();
-    mtl->AddProperty(&diff, 1, AI_MATKEY_COLOR_DIFFUSE);
-    mtl->AddProperty(&ambi, 1, AI_MATKEY_COLOR_AMBIENT);
-    mtl->AddProperty(&spec, 1, AI_MATKEY_COLOR_SPECULAR);
-    mtl->AddProperty(&emis, 1, AI_MATKEY_COLOR_EMISSIVE);
-    mtl->AddProperty(&shiny, 1, AI_MATKEY_SHININESS);
-    mtl->AddProperty(&name, AI_MATKEY_NAME);
-    if (tex.length > 0) {
-        mtl->AddProperty(&tex, AI_MATKEY_TEXTURE_DIFFUSE(0));
-        mtl->AddProperty(&tex, AI_MATKEY_TEXTURE_AMBIENT(0));
-    }
-
-    sib->mtls.push_back(mtl);
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadLightInfo(aiLight *light, StreamReaderLE *stream) {
-    uint32_t type = stream->GetU4();
-    switch (type) {
-    case 0: light->mType = aiLightSource_POINT; break;
-    case 1: light->mType = aiLightSource_SPOT; break;
-    case 2: light->mType = aiLightSource_DIRECTIONAL; break;
-    default: light->mType = aiLightSource_UNDEFINED; break;
-    }
-
-    light->mPosition.x = stream->GetF4();
-    light->mPosition.y = stream->GetF4();
-    light->mPosition.z = stream->GetF4();
-    light->mDirection.x = stream->GetF4();
-    light->mDirection.y = stream->GetF4();
-    light->mDirection.z = stream->GetF4();
-    light->mColorDiffuse = ReadColor(stream);
-    light->mColorAmbient = ReadColor(stream);
-    light->mColorSpecular = ReadColor(stream);
-    ai_real spotExponent = stream->GetF4();
-    ai_real spotCutoff = stream->GetF4();
-    light->mAttenuationConstant = stream->GetF4();
-    light->mAttenuationLinear = stream->GetF4();
-    light->mAttenuationQuadratic = stream->GetF4();
-
-    // Silo uses the OpenGL default lighting model for it's
-    // spot cutoff/exponent. AssImp unfortunately, does not.
-    // Let's try and approximate it by solving for the
-    // 99% and 1% percentiles.
-    //    OpenGL: I = cos(angle)^E
-    //   Solving: angle = acos(I^(1/E))
-    ai_real E = ai_real(1.0) / std::max(spotExponent, (ai_real)0.00001);
-    ai_real inner = std::acos(std::pow((ai_real)0.99, E));
-    ai_real outer = std::acos(std::pow((ai_real)0.01, E));
-
-    // Apply the cutoff.
-    outer = std::min(outer, AI_DEG_TO_RAD(spotCutoff));
-
-    light->mAngleInnerCone = std::min(inner, outer);
-    light->mAngleOuterCone = outer;
-}
-
-static void ReadLight(SIB *sib, StreamReaderLE *stream) {
-    aiLight *light = new aiLight();
-
-    while (stream->GetRemainingSizeToLimit() >= sizeof(SIBChunk)) {
-        SIBChunk chunk = ReadChunk(stream);
-        unsigned oldLimit = stream->SetReadLimit(stream->GetCurrentPos() + chunk.Size);
-
-        switch (chunk.Tag) {
-        case TAG('L', 'N', 'F', 'O'): ReadLightInfo(light, stream); break;
-        case TAG('S', 'N', 'A', 'M'): light->mName = ReadString(stream, chunk.Size / 2); break;
-        default: UnknownChunk(stream, chunk); break;
-        }
-
-        stream->SetCurrentPos(stream->GetReadLimit());
-        stream->SetReadLimit(oldLimit);
-    }
-
-    sib->lights.push_back(light);
-}
-
-// ------------------------------------------------------------------------------------------------
-static void ReadScale(aiMatrix4x4 &axis, StreamReaderLE *stream) {
-    aiMatrix4x4 scale;
-    scale.a1 = stream->GetF4();
-    scale.b1 = stream->GetF4();
-    scale.c1 = stream->GetF4();
-    scale.d1 = stream->GetF4();
-    scale.a2 = stream->GetF4();
-    scale.b2 = stream->GetF4();
-    scale.c2 = stream->GetF4();
-    scale.d2 = stream->GetF4();
-    scale.a3 = stream->GetF4();
-    scale.b3 = stream->GetF4();
-    scale.c3 = stream->GetF4();
-    scale.d3 = stream->GetF4();
-    scale.a4 = stream->GetF4();
-    scale.b4 = stream->GetF4();
-    scale.c4 = stream->GetF4();
-    scale.d4 = stream->GetF4();
-
-    axis = axis * scale;
-}
-
-static void ReadInstance(SIB *sib, StreamReaderLE *stream) {
-    SIBObject inst;
-    uint32_t shapeIndex = 0;
-
-    while (stream->GetRemainingSizeToLimit() >= sizeof(SIBChunk)) {
-        SIBChunk chunk = ReadChunk(stream);
-        unsigned oldLimit = stream->SetReadLimit(stream->GetCurrentPos() + chunk.Size);
-
-        switch (chunk.Tag) {
-        case TAG('D', 'I', 'N', 'F'): break; // display info, not needed
-        case TAG('P', 'I', 'N', 'F'): break; // ?
-        case TAG('A', 'X', 'I', 'S'): ReadAxis(inst.axis, stream); break;
-        case TAG('I', 'N', 'S', 'I'): shapeIndex = stream->GetU4(); break;
-        case TAG('S', 'M', 'T', 'X'): ReadScale(inst.axis, stream); break;
-        case TAG('S', 'N', 'A', 'M'): inst.name = ReadString(stream, chunk.Size / 2); break;
-        default: UnknownChunk(stream, chunk); break;
-        }
-
-        stream->SetCurrentPos(stream->GetReadLimit());
-        stream->SetReadLimit(oldLimit);
-    }
-
-    if (shapeIndex >= sib->objs.size()) {
-        throw DeadlyImportError("SIB: Invalid shape index.");
-    }
-
-    const SIBObject &src = sib->objs[shapeIndex];
-    inst.meshIdx = src.meshIdx;
-    inst.meshCount = src.meshCount;
-    sib->insts.push_back(inst);
-}
-
-// ------------------------------------------------------------------------------------------------
-static void CheckVersion(StreamReaderLE *stream) {
-    uint32_t version = stream->GetU4();
-    if (version < 1 || version > 2) {
-        throw DeadlyImportError("SIB: Unsupported file version.");
-    }
-}
-
-static void ReadScene(SIB *sib, StreamReaderLE *stream) {
-    // Parse each chunk in turn.
-    while (stream->GetRemainingSizeToLimit() >= sizeof(SIBChunk)) {
-        SIBChunk chunk = ReadChunk(stream);
-        unsigned oldLimit = stream->SetReadLimit(stream->GetCurrentPos() + chunk.Size);
-
-        switch (chunk.Tag) {
-        case TAG('H', 'E', 'A', 'D'): CheckVersion(stream); break;
-        case TAG('S', 'H', 'A', 'P'): ReadShape(sib, stream); break;
-        case TAG('G', 'R', 'P', 'S'): break; // group assignment, we don't import this
-        case TAG('T', 'E', 'X', 'P'): break; // ?
-        case TAG('I', 'N', 'S', 'T'): ReadInstance(sib, stream); break;
-        case TAG('M', 'A', 'T', 'R'): ReadMaterial(sib, stream); break;
-        case TAG('L', 'G', 'H', 'T'): ReadLight(sib, stream); break;
-        default: UnknownChunk(stream, chunk); break;
-        }
-
-        stream->SetCurrentPos(stream->GetReadLimit());
-        stream->SetReadLimit(oldLimit);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Imports the given file into the given scene structure.
-void SIBImporter::InternReadFile(const std::string &pFile,
-        aiScene *pScene, IOSystem *pIOHandler) {
-
-    auto file = pIOHandler->Open(pFile, "rb");
-    if (!file)
-        throw DeadlyImportError("SIB: Could not open ", pFile);
-
-    StreamReaderLE stream(file);
-
-    // We should have at least one chunk
-    if (stream.GetRemainingSize() < 16)
-        throw DeadlyImportError("SIB file is either empty or corrupt: ", pFile);
-
-    SIB sib;
-
-    // Default material.
-    aiMaterial *defmtl = new aiMaterial;
-    aiString defname = aiString(AI_DEFAULT_MATERIAL_NAME);
-    defmtl->AddProperty(&defname, AI_MATKEY_NAME);
-    sib.mtls.push_back(defmtl);
-
-    // Read it all.
-    ReadScene(&sib, &stream);
-
-    // Join the instances and objects together.
-    size_t firstInst = sib.objs.size();
-    sib.objs.insert(sib.objs.end(), sib.insts.begin(), sib.insts.end());
-    sib.insts.clear();
-
-    // Transfer to the aiScene.
-    pScene->mNumMaterials = static_cast<unsigned int>(sib.mtls.size());
-    pScene->mNumMeshes = static_cast<unsigned int>(sib.meshes.size());
-    pScene->mNumLights = static_cast<unsigned int>(sib.lights.size());
-    pScene->mMaterials = pScene->mNumMaterials ? new aiMaterial *[pScene->mNumMaterials] : nullptr;
-    pScene->mMeshes = pScene->mNumMeshes ? new aiMesh *[pScene->mNumMeshes] : nullptr;
-    pScene->mLights = pScene->mNumLights ? new aiLight *[pScene->mNumLights] : nullptr;
-    if (pScene->mNumMaterials)
-        memcpy(pScene->mMaterials, &sib.mtls[0], sizeof(aiMaterial *) * pScene->mNumMaterials);
-    if (pScene->mNumMeshes)
-        memcpy(pScene->mMeshes, &sib.meshes[0], sizeof(aiMesh *) * pScene->mNumMeshes);
-    if (pScene->mNumLights)
-        memcpy(pScene->mLights, &sib.lights[0], sizeof(aiLight *) * pScene->mNumLights);
-
-    // Construct the root node.
-    size_t childIdx = 0;
-    aiNode *root = new aiNode();
-    root->mName.Set("<SIBRoot>");
-    root->mNumChildren = static_cast<unsigned int>(sib.objs.size() + sib.lights.size());
-    root->mChildren = root->mNumChildren ? new aiNode *[root->mNumChildren] : nullptr;
-    pScene->mRootNode = root;
-
-    // Add nodes for each object.
-    for (size_t n = 0; n < sib.objs.size(); n++) {
-        ai_assert(root->mChildren);
-        SIBObject &obj = sib.objs[n];
-        aiNode *node = new aiNode;
-        root->mChildren[childIdx++] = node;
-        node->mName = obj.name;
-        node->mParent = root;
-        node->mTransformation = obj.axis;
-
-        node->mNumMeshes = static_cast<unsigned int>(obj.meshCount);
-        node->mMeshes = node->mNumMeshes ? new unsigned[node->mNumMeshes] : nullptr;
-        for (unsigned i = 0; i < node->mNumMeshes; i++)
-            node->mMeshes[i] = static_cast<unsigned int>(obj.meshIdx + i);
-
-        // Mark instanced objects as being so.
-        if (n >= firstInst) {
-            node->mMetaData = aiMetadata::Alloc(1);
-            node->mMetaData->Set(0, "IsInstance", true);
-        }
-    }
-
-    // Add nodes for each light.
-    // (no transformation as the light is already in world space)
-    for (size_t n = 0; n < sib.lights.size(); n++) {
-        ai_assert(root->mChildren);
-        aiLight *light = sib.lights[n];
-        if (nullptr != light) {
-            aiNode *node = new aiNode;
-            root->mChildren[childIdx++] = node;
-            node->mName = light->mName;
-            node->mParent = root;
-        }
-    }
-}
-
-#endif // !! ASSIMP_BUILD_NO_SIB_IMPORTER