1420 lines
49 KiB
C++
1420 lines
49 KiB
C++
/*
|
|
Open Asset Import Library (assimp)
|
|
----------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006-2020, 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.
|
|
|
|
----------------------------------------------------------------------
|
|
*/
|
|
|
|
#include <assimp/StringUtils.h>
|
|
#include <iomanip>
|
|
|
|
// Header files, Assimp
|
|
#include <assimp/DefaultLogger.hpp>
|
|
|
|
#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
|
|
// Header files, Open3DGC.
|
|
#include <Open3DGC/o3dgcSC3DMCDecoder.h>
|
|
#endif
|
|
|
|
using namespace Assimp;
|
|
using namespace glTFCommon;
|
|
|
|
namespace glTF {
|
|
|
|
namespace {
|
|
|
|
#if _MSC_VER
|
|
# pragma warning(push)
|
|
# pragma warning(disable : 4706)
|
|
#endif // _MSC_VER
|
|
|
|
//
|
|
// JSON Value reading helpers
|
|
//
|
|
|
|
template <class T>
|
|
struct ReadHelper {
|
|
static bool Read(Value &val, T &out) {
|
|
return val.IsInt() ? out = static_cast<T>(val.GetInt()), true : false;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<bool> {
|
|
static bool Read(Value &val, bool &out) {
|
|
return val.IsBool() ? out = val.GetBool(), true : false;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<float> {
|
|
static bool Read(Value &val, float &out) {
|
|
return val.IsNumber() ? out = static_cast<float>(val.GetDouble()), true : false;
|
|
}
|
|
};
|
|
|
|
template <unsigned int N>
|
|
struct ReadHelper<float[N]> {
|
|
static bool Read(Value &val, float (&out)[N]) {
|
|
if (!val.IsArray() || val.Size() != N) return false;
|
|
for (unsigned int i = 0; i < N; ++i) {
|
|
if (val[i].IsNumber())
|
|
out[i] = static_cast<float>(val[i].GetDouble());
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<const char *> {
|
|
static bool Read(Value &val, const char *&out) {
|
|
return val.IsString() ? (out = val.GetString(), true) : false;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<std::string> {
|
|
static bool Read(Value &val, std::string &out) {
|
|
return val.IsString() ? (out = std::string(val.GetString(), val.GetStringLength()), true) : false;
|
|
}
|
|
};
|
|
|
|
template <class T>
|
|
struct ReadHelper<Nullable<T>> {
|
|
static bool Read(Value &val, Nullable<T> &out) {
|
|
return out.isPresent = ReadHelper<T>::Read(val, out.value);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<uint64_t> {
|
|
static bool Read(Value &val, uint64_t &out) {
|
|
return val.IsUint64() ? out = val.GetUint64(), true : false;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ReadHelper<int64_t> {
|
|
static bool Read(Value &val, int64_t &out) {
|
|
return val.IsInt64() ? out = val.GetInt64(), true : false;
|
|
}
|
|
};
|
|
|
|
template <class T>
|
|
inline static bool ReadValue(Value &val, T &out) {
|
|
return ReadHelper<T>::Read(val, out);
|
|
}
|
|
|
|
template <class T>
|
|
inline static bool ReadMember(Value &obj, const char *id, T &out) {
|
|
Value::MemberIterator it = obj.FindMember(id);
|
|
if (it != obj.MemberEnd()) {
|
|
return ReadHelper<T>::Read(it->value, out);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
template <class T>
|
|
inline static T MemberOrDefault(Value &obj, const char *id, T defaultValue) {
|
|
T out;
|
|
return ReadMember(obj, id, out) ? out : defaultValue;
|
|
}
|
|
|
|
inline Value *FindMember(Value &val, const char *id) {
|
|
Value::MemberIterator it = val.FindMember(id);
|
|
return (it != val.MemberEnd()) ? &it->value : 0;
|
|
}
|
|
|
|
inline Value *FindString(Value &val, const char *id) {
|
|
Value::MemberIterator it = val.FindMember(id);
|
|
return (it != val.MemberEnd() && it->value.IsString()) ? &it->value : 0;
|
|
}
|
|
|
|
inline Value *FindNumber(Value &val, const char *id) {
|
|
Value::MemberIterator it = val.FindMember(id);
|
|
return (it != val.MemberEnd() && it->value.IsNumber()) ? &it->value : 0;
|
|
}
|
|
|
|
inline Value *FindArray(Value &val, const char *id) {
|
|
Value::MemberIterator it = val.FindMember(id);
|
|
return (it != val.MemberEnd() && it->value.IsArray()) ? &it->value : 0;
|
|
}
|
|
|
|
inline Value *FindObject(Value &val, const char *id) {
|
|
Value::MemberIterator it = val.FindMember(id);
|
|
return (it != val.MemberEnd() && it->value.IsObject()) ? &it->value : 0;
|
|
}
|
|
} // namespace
|
|
|
|
//
|
|
// LazyDict methods
|
|
//
|
|
|
|
template <class T>
|
|
inline LazyDict<T>::LazyDict(Asset &asset, const char *dictId, const char *extId) :
|
|
mDictId(dictId), mExtId(extId), mDict(0), mAsset(asset) {
|
|
asset.mDicts.push_back(this); // register to the list of dictionaries
|
|
}
|
|
|
|
template <class T>
|
|
inline LazyDict<T>::~LazyDict() {
|
|
for (size_t i = 0; i < mObjs.size(); ++i) {
|
|
delete mObjs[i];
|
|
}
|
|
}
|
|
|
|
template <class T>
|
|
inline void LazyDict<T>::AttachToDocument(Document &doc) {
|
|
Value *container = 0;
|
|
|
|
if (mExtId) {
|
|
if (Value *exts = FindObject(doc, "extensions")) {
|
|
container = FindObject(*exts, mExtId);
|
|
}
|
|
} else {
|
|
container = &doc;
|
|
}
|
|
|
|
if (container) {
|
|
mDict = FindObject(*container, mDictId);
|
|
}
|
|
}
|
|
|
|
template <class T>
|
|
inline void LazyDict<T>::DetachFromDocument() {
|
|
mDict = 0;
|
|
}
|
|
|
|
template <class T>
|
|
Ref<T> LazyDict<T>::Get(unsigned int i) {
|
|
return Ref<T>(mObjs, i);
|
|
}
|
|
|
|
template <class T>
|
|
Ref<T> LazyDict<T>::Get(const char *id) {
|
|
id = T::TranslateId(mAsset, id);
|
|
|
|
typename Dict::iterator it = mObjsById.find(id);
|
|
if (it != mObjsById.end()) { // already created?
|
|
return Ref<T>(mObjs, it->second);
|
|
}
|
|
|
|
// read it from the JSON object
|
|
if (!mDict) {
|
|
throw DeadlyImportError("GLTF: Missing section \"", mDictId, "\"");
|
|
}
|
|
|
|
Value::MemberIterator obj = mDict->FindMember(id);
|
|
if (obj == mDict->MemberEnd()) {
|
|
throw DeadlyImportError("GLTF: Missing object with id \"", id, "\" in \"", mDictId, "\"");
|
|
}
|
|
if (!obj->value.IsObject()) {
|
|
throw DeadlyImportError("GLTF: Object with id \"", id, "\" is not a JSON object");
|
|
}
|
|
|
|
// create an instance of the given type
|
|
T *inst = new T();
|
|
inst->id = id;
|
|
ReadMember(obj->value, "name", inst->name);
|
|
inst->Read(obj->value, mAsset);
|
|
return Add(inst);
|
|
}
|
|
|
|
template <class T>
|
|
Ref<T> LazyDict<T>::Add(T *obj) {
|
|
unsigned int idx = unsigned(mObjs.size());
|
|
mObjs.push_back(obj);
|
|
mObjsById[obj->id] = idx;
|
|
mAsset.mUsedIds[obj->id] = true;
|
|
return Ref<T>(mObjs, idx);
|
|
}
|
|
|
|
template <class T>
|
|
Ref<T> LazyDict<T>::Create(const char *id) {
|
|
Asset::IdMap::iterator it = mAsset.mUsedIds.find(id);
|
|
if (it != mAsset.mUsedIds.end()) {
|
|
throw DeadlyImportError("GLTF: two objects with the same ID exist");
|
|
}
|
|
T *inst = new T();
|
|
inst->id = id;
|
|
return Add(inst);
|
|
}
|
|
|
|
//
|
|
// glTF dictionary objects methods
|
|
//
|
|
|
|
inline Buffer::Buffer() :
|
|
byteLength(0), type(Type_arraybuffer), EncodedRegion_Current(nullptr), mIsSpecial(false) {}
|
|
|
|
inline Buffer::~Buffer() {
|
|
for (SEncodedRegion *reg : EncodedRegion_List)
|
|
delete reg;
|
|
}
|
|
|
|
inline const char *Buffer::TranslateId(Asset &r, const char *id) {
|
|
// Compatibility with old spec
|
|
if (r.extensionsUsed.KHR_binary_glTF && strcmp(id, "KHR_binary_glTF") == 0) {
|
|
return "binary_glTF";
|
|
}
|
|
|
|
return id;
|
|
}
|
|
|
|
inline void Buffer::Read(Value &obj, Asset &r) {
|
|
size_t statedLength = MemberOrDefault<size_t>(obj, "byteLength", 0);
|
|
byteLength = statedLength;
|
|
|
|
Value *it = FindString(obj, "uri");
|
|
if (!it) {
|
|
if (statedLength > 0) {
|
|
throw DeadlyImportError("GLTF: buffer with non-zero length missing the \"uri\" attribute");
|
|
}
|
|
return;
|
|
}
|
|
|
|
const char *uri = it->GetString();
|
|
|
|
glTFCommon::Util::DataURI dataURI;
|
|
if (ParseDataURI(uri, it->GetStringLength(), dataURI)) {
|
|
if (dataURI.base64) {
|
|
uint8_t *data = 0;
|
|
this->byteLength = Util::DecodeBase64(dataURI.data, dataURI.dataLength, data);
|
|
this->mData.reset(data, std::default_delete<uint8_t[]>());
|
|
|
|
if (statedLength > 0 && this->byteLength != statedLength) {
|
|
throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", to_string(statedLength),
|
|
" bytes, but found ", to_string(dataURI.dataLength));
|
|
}
|
|
} else { // assume raw data
|
|
if (statedLength != dataURI.dataLength) {
|
|
throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", to_string(statedLength),
|
|
" bytes, but found ", to_string(dataURI.dataLength));
|
|
}
|
|
|
|
this->mData.reset(new uint8_t[dataURI.dataLength], std::default_delete<uint8_t[]>());
|
|
memcpy(this->mData.get(), dataURI.data, dataURI.dataLength);
|
|
}
|
|
} else { // Local file
|
|
if (byteLength > 0) {
|
|
std::string dir = !r.mCurrentAssetDir.empty() ? (r.mCurrentAssetDir) : "";
|
|
|
|
IOStream *file = r.OpenFile(dir + uri, "rb");
|
|
if (file) {
|
|
bool ok = LoadFromStream(*file, byteLength);
|
|
delete file;
|
|
|
|
if (!ok)
|
|
throw DeadlyImportError("GLTF: error while reading referenced file \"", uri, "\"");
|
|
} else {
|
|
throw DeadlyImportError("GLTF: could not open referenced file \"", uri, "\"");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
inline bool Buffer::LoadFromStream(IOStream &stream, size_t length, size_t baseOffset) {
|
|
byteLength = length ? length : stream.FileSize();
|
|
|
|
if (baseOffset) {
|
|
stream.Seek(baseOffset, aiOrigin_SET);
|
|
}
|
|
|
|
mData.reset(new uint8_t[byteLength], std::default_delete<uint8_t[]>());
|
|
|
|
if (stream.Read(mData.get(), byteLength, 1) != 1) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
inline void Buffer::EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID) {
|
|
// Check pointer to data
|
|
if (pDecodedData == nullptr) throw DeadlyImportError("GLTF: for marking encoded region pointer to decoded data must be provided.");
|
|
|
|
// Check offset
|
|
if (pOffset > byteLength) {
|
|
const uint8_t val_size = 32;
|
|
|
|
char val[val_size];
|
|
|
|
ai_snprintf(val, val_size, AI_SIZEFMT, pOffset);
|
|
throw DeadlyImportError("GLTF: incorrect offset value (", val, ") for marking encoded region.");
|
|
}
|
|
|
|
// Check length
|
|
if ((pOffset + pEncodedData_Length) > byteLength) {
|
|
const uint8_t val_size = 64;
|
|
|
|
char val[val_size];
|
|
|
|
ai_snprintf(val, val_size, AI_SIZEFMT "/" AI_SIZEFMT, pOffset, pEncodedData_Length);
|
|
throw DeadlyImportError("GLTF: encoded region with offset/length (", val, ") is out of range.");
|
|
}
|
|
|
|
// Add new region
|
|
EncodedRegion_List.push_back(new SEncodedRegion(pOffset, pEncodedData_Length, pDecodedData, pDecodedData_Length, pID));
|
|
// And set new value for "byteLength"
|
|
byteLength += (pDecodedData_Length - pEncodedData_Length);
|
|
}
|
|
|
|
inline void Buffer::EncodedRegion_SetCurrent(const std::string &pID) {
|
|
if ((EncodedRegion_Current != nullptr) && (EncodedRegion_Current->ID == pID)) return;
|
|
|
|
for (SEncodedRegion *reg : EncodedRegion_List) {
|
|
if (reg->ID == pID) {
|
|
EncodedRegion_Current = reg;
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
throw DeadlyImportError("GLTF: EncodedRegion with ID: \"", pID, "\" not found.");
|
|
}
|
|
|
|
inline bool Buffer::ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count) {
|
|
const size_t new_data_size = byteLength + pReplace_Count - pBufferData_Count;
|
|
|
|
uint8_t *new_data;
|
|
|
|
if ((pBufferData_Count == 0) || (pReplace_Count == 0) || (pReplace_Data == nullptr)) return false;
|
|
|
|
new_data = new uint8_t[new_data_size];
|
|
// Copy data which place before replacing part.
|
|
memcpy(new_data, mData.get(), pBufferData_Offset);
|
|
// Copy new data.
|
|
memcpy(&new_data[pBufferData_Offset], pReplace_Data, pReplace_Count);
|
|
// Copy data which place after replacing part.
|
|
memcpy(&new_data[pBufferData_Offset + pReplace_Count], &mData.get()[pBufferData_Offset + pBufferData_Count], pBufferData_Offset);
|
|
// Apply new data
|
|
mData.reset(new_data, std::default_delete<uint8_t[]>());
|
|
byteLength = new_data_size;
|
|
|
|
return true;
|
|
}
|
|
|
|
inline size_t Buffer::AppendData(uint8_t *data, size_t length) {
|
|
size_t offset = this->byteLength;
|
|
Grow(length);
|
|
memcpy(mData.get() + offset, data, length);
|
|
return offset;
|
|
}
|
|
|
|
inline void Buffer::Grow(size_t amount) {
|
|
if (amount <= 0) return;
|
|
if (capacity >= byteLength + amount) {
|
|
byteLength += amount;
|
|
return;
|
|
}
|
|
|
|
// Shift operation is standard way to divide integer by 2, it doesn't cast it to float back and forth, also works for odd numbers,
|
|
// originally it would look like: static_cast<size_t>(capacity * 1.5f)
|
|
capacity = std::max(capacity + (capacity >> 1), byteLength + amount);
|
|
|
|
uint8_t *b = new uint8_t[capacity];
|
|
if (mData) memcpy(b, mData.get(), byteLength);
|
|
mData.reset(b, std::default_delete<uint8_t[]>());
|
|
byteLength += amount;
|
|
}
|
|
|
|
//
|
|
// struct BufferView
|
|
//
|
|
|
|
inline void BufferView::Read(Value &obj, Asset &r) {
|
|
const char *bufferId = MemberOrDefault<const char *>(obj, "buffer", 0);
|
|
if (bufferId) {
|
|
buffer = r.buffers.Get(bufferId);
|
|
}
|
|
|
|
byteOffset = MemberOrDefault(obj, "byteOffset", 0u);
|
|
byteLength = MemberOrDefault(obj, "byteLength", 0u);
|
|
}
|
|
|
|
//
|
|
// struct Accessor
|
|
//
|
|
|
|
inline void Accessor::Read(Value &obj, Asset &r) {
|
|
const char *bufferViewId = MemberOrDefault<const char *>(obj, "bufferView", 0);
|
|
if (bufferViewId) {
|
|
bufferView = r.bufferViews.Get(bufferViewId);
|
|
}
|
|
|
|
byteOffset = MemberOrDefault(obj, "byteOffset", 0u);
|
|
byteStride = MemberOrDefault(obj, "byteStride", 0u);
|
|
componentType = MemberOrDefault(obj, "componentType", ComponentType_BYTE);
|
|
count = MemberOrDefault(obj, "count", 0u);
|
|
|
|
const char *typestr;
|
|
type = ReadMember(obj, "type", typestr) ? AttribType::FromString(typestr) : AttribType::SCALAR;
|
|
}
|
|
|
|
inline unsigned int Accessor::GetNumComponents() {
|
|
return AttribType::GetNumComponents(type);
|
|
}
|
|
|
|
inline unsigned int Accessor::GetBytesPerComponent() {
|
|
return int(ComponentTypeSize(componentType));
|
|
}
|
|
|
|
inline unsigned int Accessor::GetElementSize() {
|
|
return GetNumComponents() * GetBytesPerComponent();
|
|
}
|
|
|
|
inline uint8_t *Accessor::GetPointer() {
|
|
if (!bufferView || !bufferView->buffer) return 0;
|
|
uint8_t *basePtr = bufferView->buffer->GetPointer();
|
|
if (!basePtr) return 0;
|
|
|
|
size_t offset = byteOffset + bufferView->byteOffset;
|
|
|
|
// Check if region is encoded.
|
|
if (bufferView->buffer->EncodedRegion_Current != nullptr) {
|
|
const size_t begin = bufferView->buffer->EncodedRegion_Current->Offset;
|
|
const size_t end = begin + bufferView->buffer->EncodedRegion_Current->DecodedData_Length;
|
|
|
|
if ((offset >= begin) && (offset < end))
|
|
return &bufferView->buffer->EncodedRegion_Current->DecodedData[offset - begin];
|
|
}
|
|
|
|
return basePtr + offset;
|
|
}
|
|
|
|
namespace {
|
|
inline void CopyData(size_t count,
|
|
const uint8_t *src, size_t src_stride,
|
|
uint8_t *dst, size_t dst_stride) {
|
|
if (src_stride == dst_stride) {
|
|
memcpy(dst, src, count * src_stride);
|
|
} else {
|
|
size_t sz = std::min(src_stride, dst_stride);
|
|
for (size_t i = 0; i < count; ++i) {
|
|
memcpy(dst, src, sz);
|
|
if (sz < dst_stride) {
|
|
memset(dst + sz, 0, dst_stride - sz);
|
|
}
|
|
src += src_stride;
|
|
dst += dst_stride;
|
|
}
|
|
}
|
|
}
|
|
} // namespace
|
|
|
|
template <class T>
|
|
bool Accessor::ExtractData(T *&outData) {
|
|
uint8_t *data = GetPointer();
|
|
if (!data) return false;
|
|
|
|
const size_t elemSize = GetElementSize();
|
|
const size_t totalSize = elemSize * count;
|
|
|
|
const size_t stride = byteStride ? byteStride : elemSize;
|
|
|
|
const size_t targetElemSize = sizeof(T);
|
|
ai_assert(elemSize <= targetElemSize);
|
|
|
|
ai_assert(count * stride <= bufferView->byteLength);
|
|
|
|
outData = new T[count];
|
|
if (stride == elemSize && targetElemSize == elemSize) {
|
|
memcpy(outData, data, totalSize);
|
|
} else {
|
|
for (size_t i = 0; i < count; ++i) {
|
|
memcpy(outData + i, data + i * stride, elemSize);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
inline void Accessor::WriteData(size_t cnt, const void *src_buffer, size_t src_stride) {
|
|
uint8_t *buffer_ptr = bufferView->buffer->GetPointer();
|
|
size_t offset = byteOffset + bufferView->byteOffset;
|
|
|
|
size_t dst_stride = GetNumComponents() * GetBytesPerComponent();
|
|
|
|
const uint8_t *src = reinterpret_cast<const uint8_t *>(src_buffer);
|
|
uint8_t *dst = reinterpret_cast<uint8_t *>(buffer_ptr + offset);
|
|
|
|
ai_assert(dst + count * dst_stride <= buffer_ptr + bufferView->buffer->byteLength);
|
|
CopyData(cnt, src, src_stride, dst, dst_stride);
|
|
}
|
|
|
|
inline Accessor::Indexer::Indexer(Accessor &acc) :
|
|
accessor(acc), data(acc.GetPointer()), elemSize(acc.GetElementSize()), stride(acc.byteStride ? acc.byteStride : elemSize) {
|
|
}
|
|
|
|
//! Accesses the i-th value as defined by the accessor
|
|
template <class T>
|
|
T Accessor::Indexer::GetValue(int i) {
|
|
ai_assert(data);
|
|
ai_assert(i * stride < accessor.bufferView->byteLength);
|
|
T value = T();
|
|
memcpy(&value, data + i * stride, elemSize);
|
|
//value >>= 8 * (sizeof(T) - elemSize);
|
|
return value;
|
|
}
|
|
|
|
inline Image::Image() :
|
|
width(0), height(0), mDataLength(0) {
|
|
}
|
|
|
|
inline void Image::Read(Value &obj, Asset &r) {
|
|
// Check for extensions first (to detect binary embedded data)
|
|
if (Value *extensions = FindObject(obj, "extensions")) {
|
|
if (r.extensionsUsed.KHR_binary_glTF) {
|
|
if (Value *ext = FindObject(*extensions, "KHR_binary_glTF")) {
|
|
|
|
width = MemberOrDefault(*ext, "width", 0);
|
|
height = MemberOrDefault(*ext, "height", 0);
|
|
|
|
ReadMember(*ext, "mimeType", mimeType);
|
|
|
|
const char *bufferViewId;
|
|
if (ReadMember(*ext, "bufferView", bufferViewId)) {
|
|
Ref<BufferView> bv = r.bufferViews.Get(bufferViewId);
|
|
if (bv) {
|
|
mDataLength = bv->byteLength;
|
|
mData.reset(new uint8_t[mDataLength]);
|
|
memcpy(mData.get(), bv->buffer->GetPointer() + bv->byteOffset, mDataLength);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mDataLength) {
|
|
Value *curUri = FindString(obj, "uri");
|
|
if (nullptr != curUri) {
|
|
const char *uristr = curUri->GetString();
|
|
|
|
glTFCommon::Util::DataURI dataURI;
|
|
if (ParseDataURI(uristr, curUri->GetStringLength(), dataURI)) {
|
|
mimeType = dataURI.mediaType;
|
|
if (dataURI.base64) {
|
|
uint8_t *ptr = nullptr;
|
|
mDataLength = glTFCommon::Util::DecodeBase64(dataURI.data, dataURI.dataLength, ptr);
|
|
mData.reset(ptr);
|
|
}
|
|
} else {
|
|
this->uri = uristr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
inline uint8_t *Image::StealData() {
|
|
mDataLength = 0;
|
|
return mData.release();
|
|
}
|
|
|
|
inline void Image::SetData(uint8_t *data, size_t length, Asset &r) {
|
|
Ref<Buffer> b = r.GetBodyBuffer();
|
|
if (b) { // binary file: append to body
|
|
std::string bvId = r.FindUniqueID(this->id, "imgdata");
|
|
bufferView = r.bufferViews.Create(bvId);
|
|
|
|
bufferView->buffer = b;
|
|
bufferView->byteLength = length;
|
|
bufferView->byteOffset = b->AppendData(data, length);
|
|
} else { // text file: will be stored as a data uri
|
|
uint8_t *temp = new uint8_t[length];
|
|
memcpy(temp, data, length);
|
|
this->mData.reset(temp);
|
|
this->mDataLength = length;
|
|
}
|
|
}
|
|
|
|
inline void Sampler::Read(Value &obj, Asset & /*r*/) {
|
|
SetDefaults();
|
|
|
|
ReadMember(obj, "magFilter", magFilter);
|
|
ReadMember(obj, "minFilter", minFilter);
|
|
ReadMember(obj, "wrapS", wrapS);
|
|
ReadMember(obj, "wrapT", wrapT);
|
|
}
|
|
|
|
inline void Sampler::SetDefaults() {
|
|
magFilter = SamplerMagFilter_Linear;
|
|
minFilter = SamplerMinFilter_Linear;
|
|
wrapS = SamplerWrap_Repeat;
|
|
wrapT = SamplerWrap_Repeat;
|
|
}
|
|
|
|
inline void Texture::Read(Value &obj, Asset &r) {
|
|
const char *sourcestr;
|
|
if (ReadMember(obj, "source", sourcestr)) {
|
|
source = r.images.Get(sourcestr);
|
|
}
|
|
|
|
const char *samplerstr;
|
|
if (ReadMember(obj, "sampler", samplerstr)) {
|
|
sampler = r.samplers.Get(samplerstr);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
inline void ReadMaterialProperty(Asset &r, Value &vals, const char *propName, TexProperty &out) {
|
|
if (Value *prop = FindMember(vals, propName)) {
|
|
if (prop->IsString()) {
|
|
out.texture = r.textures.Get(prop->GetString());
|
|
} else {
|
|
ReadValue(*prop, out.color);
|
|
}
|
|
}
|
|
}
|
|
} // namespace
|
|
|
|
inline void Material::Read(Value &material, Asset &r) {
|
|
SetDefaults();
|
|
|
|
if (Value *values = FindObject(material, "values")) {
|
|
ReadMaterialProperty(r, *values, "ambient", this->ambient);
|
|
ReadMaterialProperty(r, *values, "diffuse", this->diffuse);
|
|
ReadMaterialProperty(r, *values, "specular", this->specular);
|
|
|
|
ReadMember(*values, "transparency", transparency);
|
|
ReadMember(*values, "shininess", shininess);
|
|
}
|
|
|
|
if (Value *extensions = FindObject(material, "extensions")) {
|
|
if (r.extensionsUsed.KHR_materials_common) {
|
|
if (Value *ext = FindObject(*extensions, "KHR_materials_common")) {
|
|
if (Value *tnq = FindString(*ext, "technique")) {
|
|
const char *t = tnq->GetString();
|
|
if (strcmp(t, "BLINN") == 0)
|
|
technique = Technique_BLINN;
|
|
else if (strcmp(t, "PHONG") == 0)
|
|
technique = Technique_PHONG;
|
|
else if (strcmp(t, "LAMBERT") == 0)
|
|
technique = Technique_LAMBERT;
|
|
else if (strcmp(t, "CONSTANT") == 0)
|
|
technique = Technique_CONSTANT;
|
|
}
|
|
|
|
if (Value *values = FindObject(*ext, "values")) {
|
|
ReadMaterialProperty(r, *values, "ambient", this->ambient);
|
|
ReadMaterialProperty(r, *values, "diffuse", this->diffuse);
|
|
ReadMaterialProperty(r, *values, "specular", this->specular);
|
|
|
|
ReadMember(*values, "doubleSided", doubleSided);
|
|
ReadMember(*values, "transparent", transparent);
|
|
ReadMember(*values, "transparency", transparency);
|
|
ReadMember(*values, "shininess", shininess);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
void SetVector(vec4 &v, float x, float y, float z, float w) {
|
|
v[0] = x;
|
|
v[1] = y;
|
|
v[2] = z;
|
|
v[3] = w;
|
|
}
|
|
} // namespace
|
|
|
|
inline void Material::SetDefaults() {
|
|
SetVector(ambient.color, 0, 0, 0, 1);
|
|
SetVector(diffuse.color, 0, 0, 0, 1);
|
|
SetVector(specular.color, 0, 0, 0, 1);
|
|
SetVector(emission.color, 0, 0, 0, 1);
|
|
|
|
doubleSided = false;
|
|
transparent = false;
|
|
transparency = 1.0;
|
|
shininess = 0.0;
|
|
|
|
technique = Technique_undefined;
|
|
}
|
|
|
|
namespace {
|
|
|
|
template <int N>
|
|
inline int Compare(const char *attr, const char (&str)[N]) {
|
|
return (strncmp(attr, str, N - 1) == 0) ? N - 1 : 0;
|
|
}
|
|
|
|
inline bool GetAttribVector(Mesh::Primitive &p, const char *attr, Mesh::AccessorList *&v, int &pos) {
|
|
if ((pos = Compare(attr, "POSITION"))) {
|
|
v = &(p.attributes.position);
|
|
} else if ((pos = Compare(attr, "NORMAL"))) {
|
|
v = &(p.attributes.normal);
|
|
} else if ((pos = Compare(attr, "TEXCOORD"))) {
|
|
v = &(p.attributes.texcoord);
|
|
} else if ((pos = Compare(attr, "COLOR"))) {
|
|
v = &(p.attributes.color);
|
|
} else if ((pos = Compare(attr, "JOINT"))) {
|
|
v = &(p.attributes.joint);
|
|
} else if ((pos = Compare(attr, "JOINTMATRIX"))) {
|
|
v = &(p.attributes.jointmatrix);
|
|
} else if ((pos = Compare(attr, "WEIGHT"))) {
|
|
v = &(p.attributes.weight);
|
|
} else
|
|
return false;
|
|
return true;
|
|
}
|
|
} // namespace
|
|
|
|
inline void Mesh::Read(Value &pJSON_Object, Asset &pAsset_Root) {
|
|
/****************** Mesh primitives ******************/
|
|
Value *curPrimitives = FindArray(pJSON_Object, "primitives");
|
|
if (nullptr != curPrimitives) {
|
|
this->primitives.resize(curPrimitives->Size());
|
|
for (unsigned int i = 0; i < curPrimitives->Size(); ++i) {
|
|
Value &primitive = (*curPrimitives)[i];
|
|
|
|
Primitive &prim = this->primitives[i];
|
|
prim.mode = MemberOrDefault(primitive, "mode", PrimitiveMode_TRIANGLES);
|
|
|
|
if (Value *attrs = FindObject(primitive, "attributes")) {
|
|
for (Value::MemberIterator it = attrs->MemberBegin(); it != attrs->MemberEnd(); ++it) {
|
|
if (!it->value.IsString()) continue;
|
|
const char *attr = it->name.GetString();
|
|
// Valid attribute semantics include POSITION, NORMAL, TEXCOORD, COLOR, JOINT, JOINTMATRIX,
|
|
// and WEIGHT.Attribute semantics can be of the form[semantic]_[set_index], e.g., TEXCOORD_0, TEXCOORD_1, etc.
|
|
|
|
int undPos = 0;
|
|
Mesh::AccessorList *vec = 0;
|
|
if (GetAttribVector(prim, attr, vec, undPos)) {
|
|
size_t idx = (attr[undPos] == '_') ? atoi(attr + undPos + 1) : 0;
|
|
if ((*vec).size() <= idx) (*vec).resize(idx + 1);
|
|
(*vec)[idx] = pAsset_Root.accessors.Get(it->value.GetString());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Value *indices = FindString(primitive, "indices")) {
|
|
prim.indices = pAsset_Root.accessors.Get(indices->GetString());
|
|
}
|
|
|
|
if (Value *material = FindString(primitive, "material")) {
|
|
prim.material = pAsset_Root.materials.Get(material->GetString());
|
|
}
|
|
}
|
|
}
|
|
|
|
/****************** Mesh extensions ******************/
|
|
Value *json_extensions = FindObject(pJSON_Object, "extensions");
|
|
|
|
if (json_extensions == nullptr) goto mr_skip_extensions;
|
|
|
|
#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
|
|
for (Value::MemberIterator it_memb = json_extensions->MemberBegin(); it_memb != json_extensions->MemberEnd(); it_memb++) {
|
|
if (it_memb->name.GetString() == std::string("Open3DGC-compression")) {
|
|
// Search for compressed data.
|
|
// Compressed data contain description of part of "buffer" which is encoded. This part must be decoded and
|
|
// new data will replace old encoded part by request. In fact \"compressedData\" is kind of "accessor" structure.
|
|
Value *comp_data = FindObject(it_memb->value, "compressedData");
|
|
|
|
if (comp_data == nullptr) throw DeadlyImportError("GLTF: \"Open3DGC-compression\" must has \"compressedData\".");
|
|
|
|
ASSIMP_LOG_INFO("GLTF: Decompressing Open3DGC data.");
|
|
|
|
/************** Read data from JSON-document **************/
|
|
#define MESH_READ_COMPRESSEDDATA_MEMBER(pFieldName, pOut) \
|
|
if (!ReadMember(*comp_data, pFieldName, pOut)) { \
|
|
throw DeadlyImportError("GLTF: \"compressedData\" must has \"", pFieldName, "\"."); \
|
|
}
|
|
|
|
const char *mode_str;
|
|
const char *type_str;
|
|
ComponentType component_type;
|
|
SCompression_Open3DGC *ext_o3dgc = new SCompression_Open3DGC;
|
|
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("buffer", ext_o3dgc->Buffer);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("byteOffset", ext_o3dgc->Offset);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("componentType", component_type);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("type", type_str);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("count", ext_o3dgc->Count);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("mode", mode_str);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("indicesCount", ext_o3dgc->IndicesCount);
|
|
MESH_READ_COMPRESSEDDATA_MEMBER("verticesCount", ext_o3dgc->VerticesCount);
|
|
|
|
#undef MESH_READ_COMPRESSEDDATA_MEMBER
|
|
|
|
// Check some values
|
|
if (strcmp(type_str, "SCALAR")) throw DeadlyImportError("GLTF: only \"SCALAR\" type is supported for compressed data.");
|
|
if (component_type != ComponentType_UNSIGNED_BYTE) throw DeadlyImportError("GLTF: only \"UNSIGNED_BYTE\" component type is supported for compressed data.");
|
|
|
|
// Set read/write data mode.
|
|
if (strcmp(mode_str, "binary") == 0)
|
|
ext_o3dgc->Binary = true;
|
|
else if (strcmp(mode_str, "ascii") == 0)
|
|
ext_o3dgc->Binary = false;
|
|
else
|
|
throw DeadlyImportError("GLTF: for compressed data supported modes is: \"ascii\", \"binary\". Not the: \"", mode_str, "\".");
|
|
|
|
/************************ Decoding ************************/
|
|
Decode_O3DGC(*ext_o3dgc, pAsset_Root);
|
|
Extension.push_back(ext_o3dgc); // store info in mesh extensions list.
|
|
} // if(it_memb->name.GetString() == "Open3DGC-compression")
|
|
else
|
|
{
|
|
throw DeadlyImportError("GLTF: Unknown mesh extension: \"", it_memb->name.GetString(), "\".");
|
|
}
|
|
} // for(Value::MemberIterator it_memb = json_extensions->MemberBegin(); it_memb != json_extensions->MemberEnd(); json_extensions++)
|
|
#endif
|
|
|
|
mr_skip_extensions:
|
|
|
|
return; // After label some operators must be present.
|
|
}
|
|
|
|
#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
|
|
inline void Mesh::Decode_O3DGC(const SCompression_Open3DGC &pCompression_Open3DGC, Asset &pAsset_Root) {
|
|
typedef unsigned short IndicesType; ///< \sa glTFExporter::ExportMeshes.
|
|
|
|
o3dgc::SC3DMCDecoder<IndicesType> decoder;
|
|
o3dgc::IndexedFaceSet<IndicesType> ifs;
|
|
o3dgc::BinaryStream bstream;
|
|
uint8_t *decoded_data;
|
|
size_t decoded_data_size = 0;
|
|
Ref<Buffer> buf = pAsset_Root.buffers.Get(pCompression_Open3DGC.Buffer);
|
|
|
|
// Read data from buffer and place it in BinaryStream for decoder.
|
|
// Just "Count" because always is used type equivalent to uint8_t.
|
|
bstream.LoadFromBuffer(&buf->GetPointer()[pCompression_Open3DGC.Offset], static_cast<unsigned long>(pCompression_Open3DGC.Count));
|
|
|
|
// After decoding header we can get size of primitives.
|
|
if (decoder.DecodeHeader(ifs, bstream) != o3dgc::O3DGC_OK) throw DeadlyImportError("GLTF: can not decode Open3DGC header.");
|
|
|
|
/****************** Get sizes of arrays and check sizes ******************/
|
|
// Note. See "Limitations for meshes when using Open3DGC-compression".
|
|
|
|
// Indices
|
|
size_t size_coordindex = ifs.GetNCoordIndex() * 3; // See float attributes note.
|
|
|
|
if (primitives[0].indices->count != size_coordindex)
|
|
throw DeadlyImportError("GLTF: Open3DGC. Compressed indices count (", to_string(size_coordindex),
|
|
") not equal to uncompressed (", to_string(primitives[0].indices->count), ").");
|
|
|
|
size_coordindex *= sizeof(IndicesType);
|
|
// Coordinates
|
|
size_t size_coord = ifs.GetNCoord(); // See float attributes note.
|
|
|
|
if (primitives[0].attributes.position[0]->count != size_coord)
|
|
throw DeadlyImportError("GLTF: Open3DGC. Compressed positions count (", to_string(size_coord),
|
|
") not equal to uncompressed (", to_string(primitives[0].attributes.position[0]->count), ").");
|
|
|
|
size_coord *= 3 * sizeof(float);
|
|
// Normals
|
|
size_t size_normal = ifs.GetNNormal(); // See float attributes note.
|
|
|
|
if (primitives[0].attributes.normal[0]->count != size_normal)
|
|
throw DeadlyImportError("GLTF: Open3DGC. Compressed normals count (", to_string(size_normal),
|
|
") not equal to uncompressed (", to_string(primitives[0].attributes.normal[0]->count), ").");
|
|
|
|
size_normal *= 3 * sizeof(float);
|
|
// Additional attributes.
|
|
std::vector<size_t> size_floatattr;
|
|
std::vector<size_t> size_intattr;
|
|
|
|
size_floatattr.resize(ifs.GetNumFloatAttributes());
|
|
size_intattr.resize(ifs.GetNumIntAttributes());
|
|
|
|
decoded_data_size = size_coordindex + size_coord + size_normal;
|
|
for (size_t idx = 0, idx_end = size_floatattr.size(), idx_texcoord = 0; idx < idx_end; idx++) {
|
|
// size = number_of_elements * components_per_element * size_of_component.
|
|
// Note. But as you can see above, at first we are use this variable in meaning "count". After checking count of objects...
|
|
size_t tval = ifs.GetNFloatAttribute(static_cast<unsigned long>(idx));
|
|
|
|
switch (ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))) {
|
|
case o3dgc::O3DGC_IFS_FLOAT_ATTRIBUTE_TYPE_TEXCOORD:
|
|
// Check situation when encoded data contain texture coordinates but primitive not.
|
|
if (idx_texcoord < primitives[0].attributes.texcoord.size()) {
|
|
if (primitives[0].attributes.texcoord[idx]->count != tval)
|
|
throw DeadlyImportError("GLTF: Open3DGC. Compressed texture coordinates count (", to_string(tval),
|
|
") not equal to uncompressed (", to_string(primitives[0].attributes.texcoord[idx]->count), ").");
|
|
|
|
idx_texcoord++;
|
|
} else {
|
|
ifs.SetNFloatAttribute(static_cast<unsigned long>(idx), 0ul); // Disable decoding this attribute.
|
|
}
|
|
|
|
break;
|
|
default:
|
|
throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of float attribute: ", to_string(ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))));
|
|
}
|
|
|
|
tval *= ifs.GetFloatAttributeDim(static_cast<unsigned long>(idx)) * sizeof(o3dgc::Real); // After checking count of objects we can get size of array.
|
|
size_floatattr[idx] = tval;
|
|
decoded_data_size += tval;
|
|
}
|
|
|
|
for (size_t idx = 0, idx_end = size_intattr.size(); idx < idx_end; idx++) {
|
|
// size = number_of_elements * components_per_element * size_of_component. See float attributes note.
|
|
size_t tval = ifs.GetNIntAttribute(static_cast<unsigned long>(idx));
|
|
switch (ifs.GetIntAttributeType(static_cast<unsigned long>(idx))) {
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_UNKOWN:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_JOINT_ID:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX_BUFFER_ID:
|
|
break;
|
|
|
|
default:
|
|
throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of int attribute: ", to_string(ifs.GetIntAttributeType(static_cast<unsigned long>(idx))));
|
|
}
|
|
|
|
tval *= ifs.GetIntAttributeDim(static_cast<unsigned long>(idx)) * sizeof(long); // See float attributes note.
|
|
size_intattr[idx] = tval;
|
|
decoded_data_size += tval;
|
|
}
|
|
|
|
// Create array for decoded data.
|
|
decoded_data = new uint8_t[decoded_data_size];
|
|
|
|
/****************** Set right array regions for decoder ******************/
|
|
|
|
auto get_buf_offset = [](Ref<Accessor> &pAccessor) -> size_t { return pAccessor->byteOffset + pAccessor->bufferView->byteOffset; };
|
|
|
|
// Indices
|
|
ifs.SetCoordIndex((IndicesType *const)(decoded_data + get_buf_offset(primitives[0].indices)));
|
|
// Coordinates
|
|
ifs.SetCoord((o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.position[0])));
|
|
// Normals
|
|
if (size_normal) {
|
|
ifs.SetNormal((o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.normal[0])));
|
|
}
|
|
|
|
for (size_t idx = 0, idx_end = size_floatattr.size(), idx_texcoord = 0; idx < idx_end; idx++) {
|
|
switch (ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))) {
|
|
case o3dgc::O3DGC_IFS_FLOAT_ATTRIBUTE_TYPE_TEXCOORD:
|
|
if (idx_texcoord < primitives[0].attributes.texcoord.size()) {
|
|
// See above about absent attributes.
|
|
ifs.SetFloatAttribute(static_cast<unsigned long>(idx), (o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.texcoord[idx])));
|
|
idx_texcoord++;
|
|
}
|
|
|
|
break;
|
|
default:
|
|
throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of float attribute: ", to_string(ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))));
|
|
}
|
|
}
|
|
|
|
for (size_t idx = 0, idx_end = size_intattr.size(); idx < idx_end; idx++) {
|
|
switch (ifs.GetIntAttributeType(static_cast<unsigned int>(idx))) {
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_UNKOWN:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_JOINT_ID:
|
|
case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX_BUFFER_ID:
|
|
break;
|
|
|
|
// ifs.SetIntAttribute(idx, (long* const)(decoded_data + get_buf_offset(primitives[0].attributes.joint)));
|
|
default:
|
|
throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of int attribute: ", to_string(ifs.GetIntAttributeType(static_cast<unsigned long>(idx))));
|
|
}
|
|
}
|
|
|
|
//
|
|
// Decode data
|
|
//
|
|
if (decoder.DecodePayload(ifs, bstream) != o3dgc::O3DGC_OK) {
|
|
throw DeadlyImportError("GLTF: can not decode Open3DGC data.");
|
|
}
|
|
|
|
// Set encoded region for "buffer".
|
|
buf->EncodedRegion_Mark(pCompression_Open3DGC.Offset, pCompression_Open3DGC.Count, decoded_data, decoded_data_size, id);
|
|
// No. Do not delete "output_data". After calling "EncodedRegion_Mark" bufferView is owner of "output_data".
|
|
// "delete [] output_data;"
|
|
}
|
|
#endif
|
|
|
|
inline void Camera::Read(Value &obj, Asset & /*r*/) {
|
|
type = MemberOrDefault(obj, "type", Camera::Perspective);
|
|
|
|
const char *subobjId = (type == Camera::Orthographic) ? "orthographic" : "perspective";
|
|
|
|
Value *it = FindObject(obj, subobjId);
|
|
if (!it) throw DeadlyImportError("GLTF: Camera missing its parameters");
|
|
|
|
if (type == Camera::Perspective) {
|
|
perspective.aspectRatio = MemberOrDefault(*it, "aspectRatio", 0.f);
|
|
perspective.yfov = MemberOrDefault(*it, "yfov", 3.1415f / 2.f);
|
|
perspective.zfar = MemberOrDefault(*it, "zfar", 100.f);
|
|
perspective.znear = MemberOrDefault(*it, "znear", 0.01f);
|
|
} else {
|
|
ortographic.xmag = MemberOrDefault(*it, "xmag", 1.f);
|
|
ortographic.ymag = MemberOrDefault(*it, "ymag", 1.f);
|
|
ortographic.zfar = MemberOrDefault(*it, "zfar", 100.f);
|
|
ortographic.znear = MemberOrDefault(*it, "znear", 0.01f);
|
|
}
|
|
}
|
|
|
|
inline void Light::Read(Value &obj, Asset & /*r*/) {
|
|
SetDefaults();
|
|
|
|
Value *curType = FindString(obj, "type");
|
|
if (nullptr != curType) {
|
|
const char *t = curType->GetString();
|
|
if (strcmp(t, "ambient") == 0)
|
|
this->type = Type_ambient;
|
|
else if (strcmp(t, "directional") == 0)
|
|
this->type = Type_directional;
|
|
else if (strcmp(t, "point") == 0)
|
|
this->type = Type_point;
|
|
else if (strcmp(t, "spot") == 0)
|
|
this->type = Type_spot;
|
|
|
|
if (this->type != Type_undefined) {
|
|
if (Value *vals = FindString(obj, t)) {
|
|
ReadMember(*vals, "color", color);
|
|
|
|
ReadMember(*vals, "constantAttenuation", constantAttenuation);
|
|
ReadMember(*vals, "linearAttenuation", linearAttenuation);
|
|
ReadMember(*vals, "quadraticAttenuation", quadraticAttenuation);
|
|
ReadMember(*vals, "distance", distance);
|
|
|
|
ReadMember(*vals, "falloffAngle", falloffAngle);
|
|
ReadMember(*vals, "falloffExponent", falloffExponent);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void Light::SetDefaults() {
|
|
#ifndef M_PI
|
|
const float M_PI = 3.14159265358979323846f;
|
|
#endif
|
|
|
|
type = Type_undefined;
|
|
|
|
SetVector(color, 0.f, 0.f, 0.f, 1.f);
|
|
|
|
constantAttenuation = 0.f;
|
|
linearAttenuation = 1.f;
|
|
quadraticAttenuation = 1.f;
|
|
distance = 0.f;
|
|
|
|
falloffAngle = static_cast<float>(M_PI / 2.f);
|
|
falloffExponent = 0.f;
|
|
}
|
|
|
|
inline void Node::Read(Value &obj, Asset &r) {
|
|
if (name.empty()) {
|
|
name = id;
|
|
}
|
|
|
|
Value *curChildren = FindArray(obj, "children");
|
|
if (nullptr != curChildren) {
|
|
this->children.reserve(curChildren->Size());
|
|
for (unsigned int i = 0; i < curChildren->Size(); ++i) {
|
|
Value &child = (*curChildren)[i];
|
|
if (child.IsString()) {
|
|
// get/create the child node
|
|
Ref<Node> chn = r.nodes.Get(child.GetString());
|
|
if (chn) this->children.push_back(chn);
|
|
}
|
|
}
|
|
}
|
|
|
|
Value *curMatrix = FindArray(obj, "matrix");
|
|
if (nullptr != curMatrix) {
|
|
ReadValue(*curMatrix, this->matrix);
|
|
} else {
|
|
ReadMember(obj, "translation", translation);
|
|
ReadMember(obj, "scale", scale);
|
|
ReadMember(obj, "rotation", rotation);
|
|
}
|
|
|
|
Value *curMeshes = FindArray(obj, "meshes");
|
|
if (nullptr != curMeshes) {
|
|
unsigned int numMeshes = (unsigned int)curMeshes->Size();
|
|
|
|
std::vector<unsigned int> meshList;
|
|
|
|
this->meshes.reserve(numMeshes);
|
|
for (unsigned i = 0; i < numMeshes; ++i) {
|
|
if ((*curMeshes)[i].IsString()) {
|
|
Ref<Mesh> mesh = r.meshes.Get((*curMeshes)[i].GetString());
|
|
if (mesh) {
|
|
this->meshes.push_back(mesh);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Value *curCamera = FindString(obj, "camera");
|
|
if (nullptr != curCamera) {
|
|
this->camera = r.cameras.Get(curCamera->GetString());
|
|
if (this->camera) {
|
|
this->camera->id = this->id;
|
|
}
|
|
}
|
|
|
|
// TODO load "skeletons", "skin", "jointName"
|
|
|
|
if (Value *extensions = FindObject(obj, "extensions")) {
|
|
if (r.extensionsUsed.KHR_materials_common) {
|
|
|
|
if (Value *ext = FindObject(*extensions, "KHR_materials_common")) {
|
|
Value *curLight = FindString(*ext, "light");
|
|
if (nullptr != curLight) {
|
|
this->light = r.lights.Get(curLight->GetString());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void Scene::Read(Value &obj, Asset &r) {
|
|
if (Value *array = FindArray(obj, "nodes")) {
|
|
for (unsigned int i = 0; i < array->Size(); ++i) {
|
|
if (!(*array)[i].IsString()) continue;
|
|
Ref<Node> node = r.nodes.Get((*array)[i].GetString());
|
|
if (node)
|
|
this->nodes.push_back(node);
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void AssetMetadata::Read(Document &doc) {
|
|
// read the version, etc.
|
|
if (Value *obj = FindObject(doc, "asset")) {
|
|
ReadMember(*obj, "copyright", copyright);
|
|
ReadMember(*obj, "generator", generator);
|
|
|
|
premultipliedAlpha = MemberOrDefault(*obj, "premultipliedAlpha", false);
|
|
|
|
if (Value *versionString = FindString(*obj, "version")) {
|
|
version = versionString->GetString();
|
|
} else if (Value *versionNumber = FindNumber(*obj, "version")) {
|
|
char buf[4];
|
|
|
|
ai_snprintf(buf, 4, "%.1f", versionNumber->GetDouble());
|
|
|
|
version = buf;
|
|
}
|
|
|
|
Value *curProfile = FindObject(*obj, "profile");
|
|
if (nullptr != curProfile) {
|
|
ReadMember(*curProfile, "api", this->profile.api);
|
|
ReadMember(*curProfile, "version", this->profile.version);
|
|
}
|
|
}
|
|
|
|
if (version.empty() || version[0] != '1') {
|
|
throw DeadlyImportError("GLTF: Unsupported glTF version: ", version);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Asset methods implementation
|
|
//
|
|
|
|
inline void Asset::ReadBinaryHeader(IOStream &stream) {
|
|
GLB_Header header;
|
|
if (stream.Read(&header, sizeof(header), 1) != 1) {
|
|
throw DeadlyImportError("GLTF: Unable to read the file header");
|
|
}
|
|
|
|
if (strncmp((char *)header.magic, AI_GLB_MAGIC_NUMBER, sizeof(header.magic)) != 0) {
|
|
throw DeadlyImportError("GLTF: Invalid binary glTF file");
|
|
}
|
|
|
|
AI_SWAP4(header.version);
|
|
asset.version = to_string(header.version);
|
|
if (header.version != 1) {
|
|
throw DeadlyImportError("GLTF: Unsupported binary glTF version");
|
|
}
|
|
|
|
AI_SWAP4(header.sceneFormat);
|
|
if (header.sceneFormat != SceneFormat_JSON) {
|
|
throw DeadlyImportError("GLTF: Unsupported binary glTF scene format");
|
|
}
|
|
|
|
AI_SWAP4(header.length);
|
|
AI_SWAP4(header.sceneLength);
|
|
|
|
mSceneLength = static_cast<size_t>(header.sceneLength);
|
|
|
|
mBodyOffset = sizeof(header) + mSceneLength;
|
|
mBodyOffset = (mBodyOffset + 3) & ~3; // Round up to next multiple of 4
|
|
|
|
mBodyLength = header.length - mBodyOffset;
|
|
}
|
|
|
|
inline void Asset::Load(const std::string &pFile, bool isBinary) {
|
|
mCurrentAssetDir.clear();
|
|
|
|
/*int pos = std::max(int(pFile.rfind('/')), int(pFile.rfind('\\')));
|
|
if (pos != int(std::string::npos)) mCurrentAssetDir = pFile.substr(0, pos + 1);*/
|
|
mCurrentAssetDir = getCurrentAssetDir(pFile);
|
|
|
|
shared_ptr<IOStream> stream(OpenFile(pFile.c_str(), "rb", true));
|
|
if (!stream) {
|
|
throw DeadlyImportError("GLTF: Could not open file for reading");
|
|
}
|
|
|
|
// is binary? then read the header
|
|
if (isBinary) {
|
|
SetAsBinary(); // also creates the body buffer
|
|
ReadBinaryHeader(*stream);
|
|
} else {
|
|
mSceneLength = stream->FileSize();
|
|
mBodyLength = 0;
|
|
}
|
|
|
|
// read the scene data
|
|
|
|
std::vector<char> sceneData(mSceneLength + 1);
|
|
sceneData[mSceneLength] = '\0';
|
|
|
|
if (stream->Read(&sceneData[0], 1, mSceneLength) != mSceneLength) {
|
|
throw DeadlyImportError("GLTF: Could not read the file contents");
|
|
}
|
|
|
|
// parse the JSON document
|
|
|
|
Document doc;
|
|
doc.ParseInsitu(&sceneData[0]);
|
|
|
|
if (doc.HasParseError()) {
|
|
char buffer[32];
|
|
ai_snprintf(buffer, 32, "%d", static_cast<int>(doc.GetErrorOffset()));
|
|
throw DeadlyImportError("GLTF: JSON parse error, offset ", buffer, ": ", GetParseError_En(doc.GetParseError()));
|
|
}
|
|
|
|
if (!doc.IsObject()) {
|
|
throw DeadlyImportError("GLTF: JSON document root must be a JSON object");
|
|
}
|
|
|
|
// Fill the buffer instance for the current file embedded contents
|
|
if (mBodyLength > 0) {
|
|
if (!mBodyBuffer->LoadFromStream(*stream, mBodyLength, mBodyOffset)) {
|
|
throw DeadlyImportError("GLTF: Unable to read gltf file");
|
|
}
|
|
}
|
|
|
|
// Load the metadata
|
|
asset.Read(doc);
|
|
ReadExtensionsUsed(doc);
|
|
|
|
// Prepare the dictionaries
|
|
for (size_t i = 0; i < mDicts.size(); ++i) {
|
|
mDicts[i]->AttachToDocument(doc);
|
|
}
|
|
|
|
// Read the "scene" property, which specifies which scene to load
|
|
// and recursively load everything referenced by it
|
|
Value *curScene = FindString(doc, "scene");
|
|
if (nullptr != curScene) {
|
|
this->scene = scenes.Get(curScene->GetString());
|
|
}
|
|
|
|
// Clean up
|
|
for (size_t i = 0; i < mDicts.size(); ++i) {
|
|
mDicts[i]->DetachFromDocument();
|
|
}
|
|
}
|
|
|
|
inline void Asset::SetAsBinary() {
|
|
if (!extensionsUsed.KHR_binary_glTF) {
|
|
extensionsUsed.KHR_binary_glTF = true;
|
|
mBodyBuffer = buffers.Create("binary_glTF");
|
|
mBodyBuffer->MarkAsSpecial();
|
|
}
|
|
}
|
|
|
|
inline void Asset::ReadExtensionsUsed(Document &doc) {
|
|
Value *extsUsed = FindArray(doc, "extensionsUsed");
|
|
if (!extsUsed) return;
|
|
|
|
std::gltf_unordered_map<std::string, bool> exts;
|
|
|
|
for (unsigned int i = 0; i < extsUsed->Size(); ++i) {
|
|
if ((*extsUsed)[i].IsString()) {
|
|
exts[(*extsUsed)[i].GetString()] = true;
|
|
}
|
|
}
|
|
|
|
CHECK_EXT(KHR_binary_glTF);
|
|
CHECK_EXT(KHR_materials_common);
|
|
|
|
#undef CHECK_EXT
|
|
}
|
|
|
|
inline IOStream *Asset::OpenFile(std::string path, const char *mode, bool absolute) {
|
|
#ifdef ASSIMP_API
|
|
(void)absolute;
|
|
return mIOSystem->Open(path, mode);
|
|
#else
|
|
if (path.size() < 2) return 0;
|
|
if (!absolute && path[1] != ':' && path[0] != '/') { // relative?
|
|
path = mCurrentAssetDir + path;
|
|
}
|
|
FILE *f = fopen(path.c_str(), mode);
|
|
return f ? new IOStream(f) : 0;
|
|
#endif
|
|
}
|
|
|
|
inline std::string Asset::FindUniqueID(const std::string &str, const char *suffix) {
|
|
std::string id = str;
|
|
|
|
if (!id.empty()) {
|
|
if (mUsedIds.find(id) == mUsedIds.end())
|
|
return id;
|
|
|
|
id += "_";
|
|
}
|
|
|
|
id += suffix;
|
|
|
|
Asset::IdMap::iterator it = mUsedIds.find(id);
|
|
if (it == mUsedIds.end())
|
|
return id;
|
|
|
|
char buffer[1024];
|
|
int offset = ai_snprintf(buffer, sizeof(buffer), "%s_", id.c_str());
|
|
for (int i = 0; it != mUsedIds.end(); ++i) {
|
|
ai_snprintf(buffer + offset, sizeof(buffer) - offset, "%d", i);
|
|
id = buffer;
|
|
it = mUsedIds.find(id);
|
|
}
|
|
|
|
return id;
|
|
}
|
|
|
|
#if _MSC_VER
|
|
# pragma warning(pop)
|
|
#endif // _MSC_VER
|
|
|
|
} // namespace glTF
|