Duplicate gltfImporter as gltf2Importer; Include glTF2 importer in CMake List

pull/1423/head
Daniel Hritzkiv 2017-08-24 17:15:48 -04:00
parent f7d39cfa71
commit 63d3655f1b
No known key found for this signature in database
GPG Key ID: D1D19875679D5CBF
4 changed files with 775 additions and 2 deletions

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@ -665,6 +665,8 @@ ADD_ASSIMP_IMPORTER( GLTF
glTF2Asset.inl
glTF2AssetWriter.h
glTF2AssetWriter.inl
glTF2Importer.cpp
glTF2Importer.h
glTF2Exporter.h
glTF2Exporter.cpp
)

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@ -181,7 +181,7 @@ corresponding preprocessor flag to selectively disable formats.
# include "AssbinLoader.h"
#endif
#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
# include "glTFImporter.h"
# include "glTF2Importer.h"
#endif
#ifndef ASSIMP_BUILD_NO_C4D_IMPORTER
# include "C4DImporter.h"
@ -335,7 +335,7 @@ void GetImporterInstanceList(std::vector< BaseImporter* >& out)
out.push_back( new AssbinImporter() );
#endif
#if ( !defined ASSIMP_BUILD_NO_GLTF_IMPORTER )
out.push_back( new glTFImporter() );
out.push_back( new glTF2Importer() );
#endif
#if ( !defined ASSIMP_BUILD_NO_C4D_IMPORTER )
out.push_back( new C4DImporter() );

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@ -0,0 +1,680 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2017, 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.
----------------------------------------------------------------------
*/
#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
#include "glTF2Importer.h"
#include "StringComparison.h"
#include "StringUtils.h"
#include <assimp/Importer.hpp>
#include <assimp/scene.h>
#include <assimp/ai_assert.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/importerdesc.h>
#include <memory>
#include "MakeVerboseFormat.h"
#include "glTF2Asset.h"
// This is included here so WriteLazyDict<T>'s definition is found.
#include "glTF2AssetWriter.h"
using namespace Assimp;
using namespace glTF2;
//
// glTF2Importer
//
static const aiImporterDesc desc = {
"glTF2 Importer",
"",
"",
"",
aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour | aiImporterFlags_SupportCompressedFlavour
| aiImporterFlags_LimitedSupport | aiImporterFlags_Experimental,
0,
0,
0,
0,
"gltf glb"
};
glTF2Importer::glTF2Importer()
: BaseImporter()
, meshOffsets()
, embeddedTexIdxs()
, mScene( NULL ) {
// empty
}
glTF2Importer::~glTF2Importer() {
// empty
}
const aiImporterDesc* glTF2Importer::GetInfo() const
{
return &desc;
}
bool glTF2Importer::CanRead(const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
{
const std::string& extension = GetExtension(pFile);
if (extension == "gltf" || extension == "glb")
return true;
if ((checkSig || !extension.length()) && pIOHandler) {
char buffer[4];
std::unique_ptr<IOStream> pStream(pIOHandler->Open(pFile));
if (pStream && pStream->Read(buffer, sizeof(buffer), 1) == 1) {
if (memcmp(buffer, AI_GLB_MAGIC_NUMBER, sizeof(buffer)) == 0) {
return true; // Has GLB header
}
else if (memcmp(buffer, "{\r\n ", sizeof(buffer)) == 0
|| memcmp(buffer, "{\n ", sizeof(buffer)) == 0) {
// seems a JSON file, and we're the only format that can read them
return true;
}
}
}
return false;
}
//static void CopyValue(const glTF2::vec3& v, aiColor3D& out)
//{
// out.r = v[0]; out.g = v[1]; out.b = v[2];
//}
static void CopyValue(const glTF2::vec4& v, aiColor4D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2]; out.a = v[3];
}
static void CopyValue(const glTF2::vec4& v, aiColor3D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2];
}
static void CopyValue(const glTF2::vec3& v, aiVector3D& out)
{
out.x = v[0]; out.y = v[1]; out.z = v[2];
}
static void CopyValue(const glTF2::vec4& v, aiQuaternion& out)
{
out.x = v[0]; out.y = v[1]; out.z = v[2]; out.w = v[3];
}
static void CopyValue(const glTF2::mat4& v, aiMatrix4x4& o)
{
o.a1 = v[ 0]; o.b1 = v[ 1]; o.c1 = v[ 2]; o.d1 = v[ 3];
o.a2 = v[ 4]; o.b2 = v[ 5]; o.c2 = v[ 6]; o.d2 = v[ 7];
o.a3 = v[ 8]; o.b3 = v[ 9]; o.c3 = v[10]; o.d3 = v[11];
o.a4 = v[12]; o.b4 = v[13]; o.c4 = v[14]; o.d4 = v[15];
}
inline void SetMaterialColorProperty(std::vector<int>& embeddedTexIdxs, Asset& r, glTF2::TexProperty prop, aiMaterial* mat,
aiTextureType texType, const char* pKey, unsigned int type, unsigned int idx)
{
if (prop.texture) {
if (prop.texture->source) {
aiString uri(prop.texture->source->uri);
int texIdx = embeddedTexIdxs[prop.texture->source.GetIndex()];
if (texIdx != -1) { // embedded
// setup texture reference string (copied from ColladaLoader::FindFilenameForEffectTexture)
uri.data[0] = '*';
uri.length = 1 + ASSIMP_itoa10(uri.data + 1, MAXLEN - 1, texIdx);
}
mat->AddProperty(&uri, _AI_MATKEY_TEXTURE_BASE, texType, 0);
}
}
else {
aiColor4D col;
CopyValue(prop.color, col);
mat->AddProperty(&col, 1, pKey, type, idx);
}
}
void glTF2Importer::ImportMaterials(glTF2::Asset& r)
{
mScene->mNumMaterials = unsigned(r.materials.Size());
mScene->mMaterials = new aiMaterial*[mScene->mNumMaterials];
for (unsigned int i = 0; i < mScene->mNumMaterials; ++i) {
aiMaterial* aimat = mScene->mMaterials[i] = new aiMaterial();
Material& mat = r.materials[i];
/*if (!mat.name.empty())*/ {
aiString str(mat.id /*mat.name*/);
aimat->AddProperty(&str, AI_MATKEY_NAME);
}
SetMaterialColorProperty(embeddedTexIdxs, r, mat.diffuse, aimat, aiTextureType_DIFFUSE, AI_MATKEY_COLOR_DIFFUSE);
SetMaterialColorProperty(embeddedTexIdxs, r, mat.specular, aimat, aiTextureType_SPECULAR, AI_MATKEY_COLOR_SPECULAR);
SetMaterialColorProperty(embeddedTexIdxs, r, mat.ambient, aimat, aiTextureType_AMBIENT, AI_MATKEY_COLOR_AMBIENT);
if (mat.shininess > 0.f) {
aimat->AddProperty(&mat.shininess, 1, AI_MATKEY_SHININESS);
}
}
}
static inline void SetFace(aiFace& face, int a)
{
face.mNumIndices = 1;
face.mIndices = new unsigned int[1];
face.mIndices[0] = a;
}
static inline void SetFace(aiFace& face, int a, int b)
{
face.mNumIndices = 2;
face.mIndices = new unsigned int[2];
face.mIndices[0] = a;
face.mIndices[1] = b;
}
static inline void SetFace(aiFace& face, int a, int b, int c)
{
face.mNumIndices = 3;
face.mIndices = new unsigned int[3];
face.mIndices[0] = a;
face.mIndices[1] = b;
face.mIndices[2] = c;
}
static inline bool CheckValidFacesIndices(aiFace* faces, unsigned nFaces, unsigned nVerts)
{
for (unsigned i = 0; i < nFaces; ++i) {
for (unsigned j = 0; j < faces[i].mNumIndices; ++j) {
unsigned idx = faces[i].mIndices[j];
if (idx >= nVerts)
return false;
}
}
return true;
}
void glTF2Importer::ImportMeshes(glTF2::Asset& r)
{
std::vector<aiMesh*> meshes;
unsigned int k = 0;
for (unsigned int m = 0; m < r.meshes.Size(); ++m) {
Mesh& mesh = r.meshes[m];
// Check if mesh extensions is used
if(mesh.Extension.size() > 0)
{
for(Mesh::SExtension* cur_ext : mesh.Extension)
{
#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
if(cur_ext->Type == Mesh::SExtension::EType::Compression_Open3DGC)
{
// Limitations for meshes when using Open3DGC-compression.
// It's a current limitation of sp... Specification have not this part still - about mesh compression. Why only one primitive?
// Because glTF is very flexibly. But in fact it ugly flexible. Every primitive can has own set of accessors and accessors can
// point to a-a-a-a-any part of buffer (through bufferview of course) and even to another buffer. We know that "Open3DGC-compression"
// is applicable only to part of buffer. As we can't guaranty continuity of the data for decoder, we will limit quantity of primitives.
// Yes indices, coordinates etc. still can br stored in different buffers, but with current specification it's a exporter problem.
// Also primitive can has only one of "POSITION", "NORMAL" and less then "AI_MAX_NUMBER_OF_TEXTURECOORDS" of "TEXCOORD". All accessor
// of primitive must point to one continuous region of the buffer.
if(mesh.primitives.size() > 2) throw DeadlyImportError("GLTF: When using Open3DGC compression then only one primitive per mesh are allowed.");
Mesh::SCompression_Open3DGC* o3dgc_ext = (Mesh::SCompression_Open3DGC*)cur_ext;
Ref<Buffer> buf = r.buffers.Get(o3dgc_ext->Buffer);
buf->EncodedRegion_SetCurrent(mesh.id);
}
else
#endif
{
throw DeadlyImportError("GLTF: Can not import mesh: unknown mesh extension (code: \"" + to_string(cur_ext->Type) +
"\"), only Open3DGC is supported.");
}
}
}// if(mesh.Extension.size() > 0)
meshOffsets.push_back(k);
k += unsigned(mesh.primitives.size());
for (unsigned int p = 0; p < mesh.primitives.size(); ++p) {
Mesh::Primitive& prim = mesh.primitives[p];
aiMesh* aim = new aiMesh();
meshes.push_back(aim);
aim->mName = mesh.id;
if (mesh.primitives.size() > 1) {
size_t& len = aim->mName.length;
aim->mName.data[len] = '-';
len += 1 + ASSIMP_itoa10(aim->mName.data + len + 1, unsigned(MAXLEN - len - 1), p);
}
switch (prim.mode) {
case PrimitiveMode_POINTS:
aim->mPrimitiveTypes |= aiPrimitiveType_POINT;
break;
case PrimitiveMode_LINES:
case PrimitiveMode_LINE_LOOP:
case PrimitiveMode_LINE_STRIP:
aim->mPrimitiveTypes |= aiPrimitiveType_LINE;
break;
case PrimitiveMode_TRIANGLES:
case PrimitiveMode_TRIANGLE_STRIP:
case PrimitiveMode_TRIANGLE_FAN:
aim->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE;
break;
}
Mesh::Primitive::Attributes& attr = prim.attributes;
if (attr.position.size() > 0 && attr.position[0]) {
aim->mNumVertices = attr.position[0]->count;
attr.position[0]->ExtractData(aim->mVertices);
}
if (attr.normal.size() > 0 && attr.normal[0]) attr.normal[0]->ExtractData(aim->mNormals);
for (size_t tc = 0; tc < attr.texcoord.size() && tc < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++tc) {
attr.texcoord[tc]->ExtractData(aim->mTextureCoords[tc]);
aim->mNumUVComponents[tc] = attr.texcoord[tc]->GetNumComponents();
aiVector3D* values = aim->mTextureCoords[tc];
for (unsigned int i = 0; i < aim->mNumVertices; ++i) {
values[i].y = 1 - values[i].y; // Flip Y coords
}
}
if (prim.indices) {
aiFace* faces = 0;
unsigned int nFaces = 0;
unsigned int count = prim.indices->count;
Accessor::Indexer data = prim.indices->GetIndexer();
ai_assert(data.IsValid());
switch (prim.mode) {
case PrimitiveMode_POINTS: {
nFaces = count;
faces = new aiFace[nFaces];
for (unsigned int i = 0; i < count; ++i) {
SetFace(faces[i], data.GetUInt(i));
}
break;
}
case PrimitiveMode_LINES: {
nFaces = count / 2;
faces = new aiFace[nFaces];
for (unsigned int i = 0; i < count; i += 2) {
SetFace(faces[i / 2], data.GetUInt(i), data.GetUInt(i + 1));
}
break;
}
case PrimitiveMode_LINE_LOOP:
case PrimitiveMode_LINE_STRIP: {
nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
faces = new aiFace[nFaces];
SetFace(faces[0], data.GetUInt(0), data.GetUInt(1));
for (unsigned int i = 2; i < count; ++i) {
SetFace(faces[i - 1], faces[i - 2].mIndices[1], data.GetUInt(i));
}
if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
}
break;
}
case PrimitiveMode_TRIANGLES: {
nFaces = count / 3;
faces = new aiFace[nFaces];
for (unsigned int i = 0; i < count; i += 3) {
SetFace(faces[i / 3], data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
}
break;
}
case PrimitiveMode_TRIANGLE_STRIP: {
nFaces = count - 2;
faces = new aiFace[nFaces];
SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
for (unsigned int i = 3; i < count; ++i) {
SetFace(faces[i - 2], faces[i - 1].mIndices[1], faces[i - 1].mIndices[2], data.GetUInt(i));
}
break;
}
case PrimitiveMode_TRIANGLE_FAN:
nFaces = count - 2;
faces = new aiFace[nFaces];
SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
for (unsigned int i = 3; i < count; ++i) {
SetFace(faces[i - 2], faces[0].mIndices[0], faces[i - 1].mIndices[2], data.GetUInt(i));
}
break;
}
if (faces) {
aim->mFaces = faces;
aim->mNumFaces = nFaces;
ai_assert(CheckValidFacesIndices(faces, nFaces, aim->mNumVertices));
}
}
if (prim.material) {
aim->mMaterialIndex = prim.material.GetIndex();
}
}
}
meshOffsets.push_back(k);
CopyVector(meshes, mScene->mMeshes, mScene->mNumMeshes);
}
void glTF2Importer::ImportCameras(glTF2::Asset& r)
{
if (!r.cameras.Size()) return;
mScene->mNumCameras = r.cameras.Size();
mScene->mCameras = new aiCamera*[r.cameras.Size()];
for (size_t i = 0; i < r.cameras.Size(); ++i) {
Camera& cam = r.cameras[i];
aiCamera* aicam = mScene->mCameras[i] = new aiCamera();
if (cam.type == Camera::Perspective) {
aicam->mAspect = cam.cameraProperties.perspective.aspectRatio;
aicam->mHorizontalFOV = cam.cameraProperties.perspective.yfov * aicam->mAspect;
aicam->mClipPlaneFar = cam.cameraProperties.perspective.zfar;
aicam->mClipPlaneNear = cam.cameraProperties.perspective.znear;
}
else {
// assimp does not support orthographic cameras
}
}
}
void glTF2Importer::ImportLights(glTF2::Asset& r)
{
if (!r.lights.Size()) return;
mScene->mNumLights = r.lights.Size();
mScene->mLights = new aiLight*[r.lights.Size()];
for (size_t i = 0; i < r.lights.Size(); ++i) {
Light& l = r.lights[i];
aiLight* ail = mScene->mLights[i] = new aiLight();
switch (l.type) {
case Light::Type_directional:
ail->mType = aiLightSource_DIRECTIONAL; break;
case Light::Type_spot:
ail->mType = aiLightSource_SPOT; break;
case Light::Type_ambient:
ail->mType = aiLightSource_AMBIENT; break;
default: // Light::Type_point
ail->mType = aiLightSource_POINT; break;
}
CopyValue(l.color, ail->mColorAmbient);
CopyValue(l.color, ail->mColorDiffuse);
CopyValue(l.color, ail->mColorSpecular);
ail->mAngleOuterCone = l.falloffAngle;
ail->mAngleInnerCone = l.falloffExponent; // TODO fix this, it does not look right at all
ail->mAttenuationConstant = l.constantAttenuation;
ail->mAttenuationLinear = l.linearAttenuation;
ail->mAttenuationQuadratic = l.quadraticAttenuation;
}
}
aiNode* ImportNode(aiScene* pScene, glTF2::Asset& r, std::vector<unsigned int>& meshOffsets, glTF2::Ref<glTF2::Node>& ptr)
{
Node& node = *ptr;
aiNode* ainode = new aiNode(node.id);
if (!node.children.empty()) {
ainode->mNumChildren = unsigned(node.children.size());
ainode->mChildren = new aiNode*[ainode->mNumChildren];
for (unsigned int i = 0; i < ainode->mNumChildren; ++i) {
aiNode* child = ImportNode(pScene, r, meshOffsets, node.children[i]);
child->mParent = ainode;
ainode->mChildren[i] = child;
}
}
aiMatrix4x4& matrix = ainode->mTransformation;
if (node.matrix.isPresent) {
CopyValue(node.matrix.value, matrix);
}
else {
if (node.translation.isPresent) {
aiVector3D trans;
CopyValue(node.translation.value, trans);
aiMatrix4x4 t;
aiMatrix4x4::Translation(trans, t);
matrix = t * matrix;
}
if (node.scale.isPresent) {
aiVector3D scal(1.f);
CopyValue(node.scale.value, scal);
aiMatrix4x4 s;
aiMatrix4x4::Scaling(scal, s);
matrix = s * matrix;
}
if (node.rotation.isPresent) {
aiQuaternion rot;
CopyValue(node.rotation.value, rot);
matrix = aiMatrix4x4(rot.GetMatrix()) * matrix;
}
}
if (!node.meshes.empty()) {
int count = 0;
for (size_t i = 0; i < node.meshes.size(); ++i) {
int idx = node.meshes[i].GetIndex();
count += meshOffsets[idx + 1] - meshOffsets[idx];
}
ainode->mNumMeshes = count;
ainode->mMeshes = new unsigned int[count];
int k = 0;
for (size_t i = 0; i < node.meshes.size(); ++i) {
int idx = node.meshes[i].GetIndex();
for (unsigned int j = meshOffsets[idx]; j < meshOffsets[idx + 1]; ++j, ++k) {
ainode->mMeshes[k] = j;
}
}
}
if (node.camera) {
pScene->mCameras[node.camera.GetIndex()]->mName = ainode->mName;
}
if (node.light) {
pScene->mLights[node.light.GetIndex()]->mName = ainode->mName;
}
return ainode;
}
void glTF2Importer::ImportNodes(glTF2::Asset& r)
{
if (!r.scene) return;
std::vector< Ref<Node> > rootNodes = r.scene->nodes;
// The root nodes
unsigned int numRootNodes = unsigned(rootNodes.size());
if (numRootNodes == 1) { // a single root node: use it
mScene->mRootNode = ImportNode(mScene, r, meshOffsets, rootNodes[0]);
}
else if (numRootNodes > 1) { // more than one root node: create a fake root
aiNode* root = new aiNode("ROOT");
root->mChildren = new aiNode*[numRootNodes];
for (unsigned int i = 0; i < numRootNodes; ++i) {
aiNode* node = ImportNode(mScene, r, meshOffsets, rootNodes[i]);
node->mParent = root;
root->mChildren[root->mNumChildren++] = node;
}
mScene->mRootNode = root;
}
//if (!mScene->mRootNode) {
// mScene->mRootNode = new aiNode("EMPTY");
//}
}
void glTF2Importer::ImportEmbeddedTextures(glTF2::Asset& r)
{
embeddedTexIdxs.resize(r.images.Size(), -1);
int numEmbeddedTexs = 0;
for (size_t i = 0; i < r.images.Size(); ++i) {
if (r.images[i].HasData())
numEmbeddedTexs += 1;
}
if (numEmbeddedTexs == 0)
return;
mScene->mTextures = new aiTexture*[numEmbeddedTexs];
// Add the embedded textures
for (size_t i = 0; i < r.images.Size(); ++i) {
Image img = r.images[i];
if (!img.HasData()) continue;
int idx = mScene->mNumTextures++;
embeddedTexIdxs[i] = idx;
aiTexture* tex = mScene->mTextures[idx] = new aiTexture();
size_t length = img.GetDataLength();
void* data = img.StealData();
tex->mWidth = static_cast<unsigned int>(length);
tex->mHeight = 0;
tex->pcData = reinterpret_cast<aiTexel*>(data);
if (!img.mimeType.empty()) {
const char* ext = strchr(img.mimeType.c_str(), '/') + 1;
if (ext) {
if (strcmp(ext, "jpeg") == 0) ext = "jpg";
size_t len = strlen(ext);
if (len <= 3) {
strcpy(tex->achFormatHint, ext);
}
}
}
}
}
void glTF2Importer::InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) {
this->mScene = pScene;
// read the asset file
glTF2::Asset asset(pIOHandler);
asset.Load(pFile, GetExtension(pFile) == "glb");
//
// Copy the data out
//
ImportEmbeddedTextures(asset);
ImportMaterials(asset);
ImportMeshes(asset);
ImportCameras(asset);
ImportLights(asset);
ImportNodes(asset);
// TODO: it does not split the loaded vertices, should it?
//pScene->mFlags |= AI_SCENE_FLAGS_NON_VERBOSE_FORMAT;
MakeVerboseFormatProcess process;
process.Execute(pScene);
if (pScene->mNumMeshes == 0) {
pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
}
}
#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER

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@ -0,0 +1,91 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2017, 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.
----------------------------------------------------------------------
*/
#ifndef AI_GLTF2IMPORTER_H_INC
#define AI_GLTF2IMPORTER_H_INC
#include "BaseImporter.h"
#include <assimp/DefaultIOSystem.h>
struct aiNode;
namespace glTF2
{
class Asset;
}
namespace Assimp {
/**
* Load the glTF2 format.
* https://github.com/KhronosGroup/glTF/tree/master/specification
*/
class glTF2Importer : public BaseImporter{
public:
glTF2Importer();
virtual ~glTF2Importer();
virtual bool CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig ) const;
protected:
virtual const aiImporterDesc* GetInfo() const;
virtual void InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler );
private:
std::vector<unsigned int> meshOffsets;
std::vector<int> embeddedTexIdxs;
aiScene* mScene;
void ImportEmbeddedTextures(glTF2::Asset& a);
void ImportMaterials(glTF2::Asset& a);
void ImportMeshes(glTF2::Asset& a);
void ImportCameras(glTF2::Asset& a);
void ImportLights(glTF2::Asset& a);
void ImportNodes(glTF2::Asset& a);
};
} // Namespace assimp
#endif // AI_GLTF2IMPORTER_H_INC