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update assimp to 5.2.3 Bugfix-Release

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AzaezelX 2022-04-26 11:56:24 -05:00
parent 3f796d2a06
commit f297476092
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Engine/lib/assimp/code/AssetLib/M3D/M3DExporter.cpp Normal file
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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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_EXPORT
#ifndef ASSIMP_BUILD_NO_M3D_EXPORTER
#define M3D_IMPLEMENTATION
#define M3D_NOIMPORTER
#define M3D_EXPORTER
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#define M3D_NODUP
// Header files, standard library.
#include <memory> // shared_ptr
#include <string>
#include <vector>
#include <assimp/Exceptional.h> // DeadlyExportError
#include <assimp/StreamWriter.h> // StreamWriterLE
#include <assimp/material.h> // aiTextureType
#include <assimp/mesh.h>
#include <assimp/scene.h>
#include <assimp/version.h> // aiGetVersion
#include <assimp/DefaultLogger.hpp>
#include <assimp/Exporter.hpp>
#include <assimp/IOSystem.hpp>
#include "M3DExporter.h"
#include "M3DMaterials.h"
#include "M3DWrapper.h"
// RESOURCES:
// https://gitlab.com/bztsrc/model3d/blob/master/docs/m3d_format.md
// https://gitlab.com/bztsrc/model3d/blob/master/docs/a3d_format.md
/*
* Currently supports static meshes, vertex colors, materials, textures
*
* For animation, it would require the following conversions:
* - aiNode (bones) -> m3d_t.bone (with parent id, position vector and orientation quaternion)
* - aiMesh.aiBone -> m3d_t.skin (per vertex, with bone id, weight pairs)
* - aiAnimation -> m3d_action (frame with timestamp and list of bone id, position, orientation
* triplets, instead of per bone timestamp + lists)
*/
// ------------------------------------------------------------------------------------------------
// Conversion functions
// ------------------------------------------------------------------------------------------------
// helper to add a vertex (private to NodeWalk)
m3dv_t *AddVrtx(m3dv_t *vrtx, uint32_t *numvrtx, m3dv_t *v, uint32_t *idx) {
if (v->x == (M3D_FLOAT)-0.0) v->x = (M3D_FLOAT)0.0;
if (v->y == (M3D_FLOAT)-0.0) v->y = (M3D_FLOAT)0.0;
if (v->z == (M3D_FLOAT)-0.0) v->z = (M3D_FLOAT)0.0;
if (v->w == (M3D_FLOAT)-0.0) v->w = (M3D_FLOAT)0.0;
vrtx = (m3dv_t *)M3D_REALLOC(vrtx, ((*numvrtx) + 1) * sizeof(m3dv_t));
memcpy(&vrtx[*numvrtx], v, sizeof(m3dv_t));
*idx = *numvrtx;
(*numvrtx)++;
return vrtx;
}
// ------------------------------------------------------------------------------------------------
// helper to add a tmap (private to NodeWalk)
m3dti_t *AddTmap(m3dti_t *tmap, uint32_t *numtmap, m3dti_t *ti, uint32_t *idx) {
tmap = (m3dti_t *)M3D_REALLOC(tmap, ((*numtmap) + 1) * sizeof(m3dti_t));
memcpy(&tmap[*numtmap], ti, sizeof(m3dti_t));
*idx = *numtmap;
(*numtmap)++;
return tmap;
}
// ------------------------------------------------------------------------------------------------
// convert aiColor4D into uint32_t
uint32_t mkColor(aiColor4D *c) {
return ((uint8_t)(c->a * 255) << 24L) |
((uint8_t)(c->b * 255) << 16L) |
((uint8_t)(c->g * 255) << 8L) |
((uint8_t)(c->r * 255) << 0L);
}
// ------------------------------------------------------------------------------------------------
// add a material property to the output
void addProp(m3dm_t *m, uint8_t type, uint32_t value) {
unsigned int i;
i = m->numprop++;
m->prop = (m3dp_t *)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t));
if (!m->prop) {
throw DeadlyExportError("memory allocation error");
}
m->prop[i].type = type;
m->prop[i].value.num = value;
}
// ------------------------------------------------------------------------------------------------
// convert aiString to identifier safe C string. This is a duplication of _m3d_safestr
char *SafeStr(aiString str, bool isStrict) {
char *s = (char *)&str.data;
char *d, *ret;
int i, len;
for (len = str.length + 1; *s && (*s == ' ' || *s == '\t'); s++, len--)
;
if (len > 255) len = 255;
ret = (char *)M3D_MALLOC(len + 1);
if (!ret) {
throw DeadlyExportError("memory allocation error");
}
for (i = 0, d = ret; i < len && *s && *s != '\r' && *s != '\n'; s++, d++, i++) {
*d = isStrict && (*s == ' ' || *s == '\t' || *s == '/' || *s == '\\') ? '_' : (*s == '\t' ? ' ' : *s);
}
for (; d > ret && (*(d - 1) == ' ' || *(d - 1) == '\t'); d--)
;
*d = 0;
return ret;
}
// ------------------------------------------------------------------------------------------------
// add a material to the output
M3D_INDEX addMaterial(const Assimp::M3DWrapper &m3d, const aiMaterial *mat) {
unsigned int mi = M3D_NOTDEFINED;
aiColor4D c;
aiString name;
ai_real f;
char *fn;
if (mat && mat->Get(AI_MATKEY_NAME, name) == AI_SUCCESS && name.length &&
strcmp((char *)&name.data, AI_DEFAULT_MATERIAL_NAME)) {
// check if we have saved a material by this name. This has to be done
// because only the referenced materials should be added to the output
for (unsigned int i = 0; i < m3d->nummaterial; i++)
if (!strcmp((char *)&name.data, m3d->material[i].name)) {
mi = i;
break;
}
// if not found, add the material to the output
if (mi == M3D_NOTDEFINED) {
unsigned int k;
mi = m3d->nummaterial++;
m3d->material = (m3dm_t *)M3D_REALLOC(m3d->material, m3d->nummaterial * sizeof(m3dm_t));
if (!m3d->material) {
throw DeadlyExportError("memory allocation error");
}
m3d->material[mi].name = SafeStr(name, true);
m3d->material[mi].numprop = 0;
m3d->material[mi].prop = nullptr;
// iterate through the material property table and see what we got
for (k = 0; k < 15; k++) {
unsigned int j;
if (m3d_propertytypes[k].format == m3dpf_map)
continue;
if (aiProps[k].pKey) {
switch (m3d_propertytypes[k].format) {
case m3dpf_color:
if (mat->Get(aiProps[k].pKey, aiProps[k].type,
aiProps[k].index, c) == AI_SUCCESS)
addProp(&m3d->material[mi],
m3d_propertytypes[k].id, mkColor(&c));
break;
case m3dpf_float:
if (mat->Get(aiProps[k].pKey, aiProps[k].type,
aiProps[k].index, f) == AI_SUCCESS) {
uint32_t f_uint32;
memcpy(&f_uint32, &f, sizeof(uint32_t));
addProp(&m3d->material[mi],
m3d_propertytypes[k].id,
/* not (uint32_t)f, because we don't want to convert
* it, we want to see it as 32 bits of memory */
f_uint32);
}
break;
case m3dpf_uint8:
if (mat->Get(aiProps[k].pKey, aiProps[k].type,
aiProps[k].index, j) == AI_SUCCESS) {
// special conversion for illumination model property
if (m3d_propertytypes[k].id == m3dp_il) {
switch (j) {
case aiShadingMode_NoShading: j = 0; break;
case aiShadingMode_Phong: j = 2; break;
default: j = 1; break;
}
}
addProp(&m3d->material[mi],
m3d_propertytypes[k].id, j);
}
break;
default:
if (mat->Get(aiProps[k].pKey, aiProps[k].type,
aiProps[k].index, j) == AI_SUCCESS)
addProp(&m3d->material[mi],
m3d_propertytypes[k].id, j);
break;
}
}
if (aiTxProps[k].pKey &&
mat->GetTexture((aiTextureType)aiTxProps[k].type,
aiTxProps[k].index, &name, nullptr, nullptr, nullptr,
nullptr, nullptr) == AI_SUCCESS) {
unsigned int i;
for (j = name.length - 1; j > 0 && name.data[j] != '.'; j++)
;
if (j && name.data[j] == '.' &&
(name.data[j + 1] == 'p' || name.data[j + 1] == 'P') &&
(name.data[j + 1] == 'n' || name.data[j + 1] == 'N') &&
(name.data[j + 1] == 'g' || name.data[j + 1] == 'G'))
name.data[j] = 0;
// do we have this texture saved already?
fn = SafeStr(name, true);
for (j = 0, i = M3D_NOTDEFINED; j < m3d->numtexture; j++)
if (!strcmp(fn, m3d->texture[j].name)) {
i = j;
free(fn);
break;
}
if (i == M3D_NOTDEFINED) {
i = m3d->numtexture++;
m3d->texture = (m3dtx_t *)M3D_REALLOC(
m3d->texture,
m3d->numtexture * sizeof(m3dtx_t));
if (!m3d->texture) {
throw DeadlyExportError("memory allocation error");
}
// we don't need the texture itself, only its name
m3d->texture[i].name = fn;
m3d->texture[i].w = 0;
m3d->texture[i].h = 0;
m3d->texture[i].d = nullptr;
}
addProp(&m3d->material[mi],
m3d_propertytypes[k].id + 128, i);
}
}
}
}
return mi;
}
namespace Assimp {
// ---------------------------------------------------------------------
// Worker function for exporting a scene to binary M3D.
// Prototyped and registered in Exporter.cpp
void ExportSceneM3D(
const char *pFile,
IOSystem *pIOSystem,
const aiScene *pScene,
const ExportProperties *pProperties) {
// initialize the exporter
M3DExporter exporter(pScene, pProperties);
// perform binary export
exporter.doExport(pFile, pIOSystem, false);
}
// ---------------------------------------------------------------------
// Worker function for exporting a scene to ASCII A3D.
// Prototyped and registered in Exporter.cpp
void ExportSceneM3DA(
const char *pFile,
IOSystem *pIOSystem,
const aiScene *pScene,
const ExportProperties *pProperties
) {
// initialize the exporter
M3DExporter exporter(pScene, pProperties);
// perform ascii export
exporter.doExport(pFile, pIOSystem, true);
}
// ------------------------------------------------------------------------------------------------
M3DExporter::M3DExporter(const aiScene *pScene, const ExportProperties *pProperties) :
mScene(pScene),
mProperties(pProperties),
outfile() {
// empty
}
// ------------------------------------------------------------------------------------------------
void M3DExporter::doExport(
const char *pFile,
IOSystem *pIOSystem,
bool toAscii) {
// TODO: convert mProperties into M3D_EXP_* flags
(void)mProperties;
// open the indicated file for writing (in binary / ASCII mode)
outfile.reset(pIOSystem->Open(pFile, toAscii ? "wt" : "wb"));
if (!outfile) {
throw DeadlyExportError("could not open output .m3d file: " + std::string(pFile));
}
M3DWrapper m3d;
if (!m3d) {
throw DeadlyExportError("memory allocation error");
}
m3d->name = SafeStr(mScene->mRootNode->mName, false);
// Create a model from assimp structures
aiMatrix4x4 m;
NodeWalk(m3d, mScene->mRootNode, m);
// serialize the structures
unsigned int size;
unsigned char *output = m3d.Save(M3D_EXP_FLOAT, M3D_EXP_EXTRA | (toAscii ? M3D_EXP_ASCII : 0), size);
if (!output || size < 8) {
throw DeadlyExportError("unable to serialize into Model 3D");
}
// Write out serialized model
outfile->Write(output, size, 1);
// explicitly release file pointer,
// so we don't have to rely on class destruction.
outfile.reset();
M3D_FREE(m3d->name);
m3d->name = nullptr;
}
// ------------------------------------------------------------------------------------------------
// recursive node walker
void M3DExporter::NodeWalk(const M3DWrapper &m3d, const aiNode *pNode, aiMatrix4x4 m) {
aiMatrix4x4 nm = m * pNode->mTransformation;
for (unsigned int i = 0; i < pNode->mNumMeshes; i++) {
const aiMesh *mesh = mScene->mMeshes[pNode->mMeshes[i]];
unsigned int mi = M3D_NOTDEFINED;
if (mScene->mMaterials) {
// get the material for this mesh
mi = addMaterial(m3d, mScene->mMaterials[mesh->mMaterialIndex]);
}
// iterate through the mesh faces
for (unsigned int j = 0; j < mesh->mNumFaces; j++) {
unsigned int n;
const aiFace *face = &(mesh->mFaces[j]);
// only triangle meshes supported for now
if (face->mNumIndices != 3) {
throw DeadlyExportError("use aiProcess_Triangulate before export");
}
// add triangle to the output
n = m3d->numface++;
m3d->face = (m3df_t *)M3D_REALLOC(m3d->face,
m3d->numface * sizeof(m3df_t));
if (!m3d->face) {
throw DeadlyExportError("memory allocation error");
}
/* set all index to -1 by default */
m3d->face[n].vertex[0] = m3d->face[n].vertex[1] = m3d->face[n].vertex[2] =
m3d->face[n].normal[0] = m3d->face[n].normal[1] = m3d->face[n].normal[2] =
m3d->face[n].texcoord[0] = m3d->face[n].texcoord[1] = m3d->face[n].texcoord[2] = M3D_UNDEF;
m3d->face[n].materialid = mi;
for (unsigned int k = 0; k < face->mNumIndices; k++) {
// get the vertex's index
unsigned int l = face->mIndices[k];
unsigned int idx;
m3dv_t vertex;
m3dti_t ti;
// multiply the position vector by the transformation matrix
aiVector3D v = mesh->mVertices[l];
v *= nm;
vertex.x = v.x;
vertex.y = v.y;
vertex.z = v.z;
vertex.w = 1.0;
vertex.color = 0;
vertex.skinid = M3D_UNDEF;
// add color if defined
if (mesh->HasVertexColors(0))
vertex.color = mkColor(&mesh->mColors[0][l]);
// save the vertex to the output
m3d->vertex = AddVrtx(m3d->vertex, &m3d->numvertex,
&vertex, &idx);
m3d->face[n].vertex[k] = (M3D_INDEX)idx;
// do we have texture coordinates?
if (mesh->HasTextureCoords(0)) {
ti.u = mesh->mTextureCoords[0][l].x;
ti.v = mesh->mTextureCoords[0][l].y;
m3d->tmap = AddTmap(m3d->tmap, &m3d->numtmap, &ti, &idx);
m3d->face[n].texcoord[k] = (M3D_INDEX)idx;
}
// do we have normal vectors?
if (mesh->HasNormals()) {
vertex.x = mesh->mNormals[l].x;
vertex.y = mesh->mNormals[l].y;
vertex.z = mesh->mNormals[l].z;
vertex.color = 0;
m3d->vertex = AddVrtx(m3d->vertex, &m3d->numvertex, &vertex, &idx);
m3d->face[n].normal[k] = (M3D_INDEX)idx;
}
}
}
}
// repeat for the children nodes
for (unsigned int i = 0; i < pNode->mNumChildren; i++) {
NodeWalk(m3d, pNode->mChildren[i], nm);
}
}
} // namespace Assimp
#endif
#endif // ASSIMP_BUILD_NO_M3D_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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 M3DExporter.h
* @brief Declares the exporter class to write a scene to a Model 3D file
*/
#ifndef AI_M3DEXPORTER_H_INC
#define AI_M3DEXPORTER_H_INC
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#ifndef ASSIMP_BUILD_NO_M3D_EXPORTER
#include <assimp/types.h>
#include <assimp/StreamWriter.h> // StreamWriterLE
#include <assimp/Exceptional.h> // DeadlyExportError
#include <memory> // shared_ptr
struct aiScene;
struct aiNode;
struct aiMaterial;
struct aiFace;
namespace Assimp {
class IOSystem;
class IOStream;
class ExportProperties;
class M3DWrapper;
// ---------------------------------------------------------------------
/** Helper class to export a given scene to an M3D file. */
// ---------------------------------------------------------------------
class M3DExporter {
public:
/// Constructor for a specific scene to export
M3DExporter(const aiScene* pScene, const ExportProperties* pProperties);
// call this to do the actual export
void doExport(const char* pFile, IOSystem* pIOSystem, bool toAscii);
private:
const aiScene* mScene; // the scene to export
const ExportProperties* mProperties; // currently unused
std::shared_ptr<IOStream> outfile; // file to write to
// helper to do the recursive walking
void NodeWalk(const M3DWrapper &m3d, const aiNode* pNode, aiMatrix4x4 m);
};
}
#endif // #ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#endif // ASSIMP_BUILD_NO_M3D_EXPORTER
#endif // AI_M3DEXPORTER_H_INC

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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_M3D_IMPORTER
#define M3D_IMPLEMENTATION
#define M3D_NONORMALS /* leave the post-processing to Assimp */
#define M3D_NOWEIGHTS
#define M3D_NOANIMATION
#include <assimp/DefaultIOSystem.h>
#include <assimp/IOStreamBuffer.h>
#include <assimp/ai_assert.h>
#include <assimp/importerdesc.h>
#include <assimp/scene.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/Importer.hpp>
#include <memory>
#include "M3DImporter.h"
#include "M3DMaterials.h"
#include "M3DWrapper.h"
// RESOURCES:
// https://gitlab.com/bztsrc/model3d/blob/master/docs/m3d_format.md
// https://gitlab.com/bztsrc/model3d/blob/master/docs/a3d_format.md
/*
Unfortunately aiNode has bone structures and meshes too, yet we can't assign
the mesh to a bone aiNode as a skin may refer to several aiNodes. Therefore
I've decided to import into this structure:
aiScene->mRootNode
| |->mMeshes (all the meshes)
| \->children (empty if there's no skeleton imported, no meshes)
| \->skeleton root aiNode*
| |->bone aiNode
| | \->subbone aiNode
| |->bone aiNode
| | ...
| \->bone aiNode
\->mMeshes[]
\->aiBone, referencing mesh-less aiNodes from above
* - normally one, but if a model has several skeleton roots, then all of them
are listed in aiScene->mRootNode->children, but all without meshes
*/
static const aiImporterDesc desc = {
"Model 3D Importer",
"",
"",
"",
aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour,
0,
0,
0,
0,
"m3d a3d"
};
namespace Assimp {
using namespace std;
// ------------------------------------------------------------------------------------------------
// Default constructor
M3DImporter::M3DImporter() :
mScene(nullptr) {
// empty
}
// ------------------------------------------------------------------------------------------------
// Returns true, if file is a binary or ASCII Model 3D file.
bool M3DImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
// don't use CheckMagicToken because that checks with swapped bytes too, leading to false
// positives. This magic is not uint32_t, but char[4], so memcmp is the best way
std::unique_ptr<IOStream> pStream(pIOHandler->Open(pFile, "rb"));
unsigned char data[4];
if (4 != pStream->Read(data, 1, 4)) {
return false;
}
return !memcmp(data, "3DMO", 4) /* bin */
#ifdef M3D_ASCII
|| !memcmp(data, "3dmo", 4) /* ASCII */
#endif
;
}
// ------------------------------------------------------------------------------------------------
const aiImporterDesc *M3DImporter::GetInfo() const {
return &desc;
}
// ------------------------------------------------------------------------------------------------
// Model 3D import implementation
void M3DImporter::InternReadFile(const std::string &file, aiScene *pScene, IOSystem *pIOHandler) {
// Read file into memory
std::unique_ptr<IOStream> pStream(pIOHandler->Open(file, "rb"));
if (!pStream.get()) {
throw DeadlyImportError("Failed to open file ", file, ".");
}
// Get the file-size and validate it, throwing an exception when fails
size_t fileSize = pStream->FileSize();
if (fileSize < 8) {
throw DeadlyImportError("M3D-file ", file, " is too small.");
}
std::vector<unsigned char> buffer(fileSize);
if (fileSize != pStream->Read(buffer.data(), 1, fileSize)) {
throw DeadlyImportError("Failed to read the file ", file, ".");
}
// extra check for binary format's first 8 bytes. Not done for the ASCII variant
if (!memcmp(buffer.data(), "3DMO", 4) && memcmp(buffer.data() + 4, &fileSize, 4)) {
throw DeadlyImportError("Bad binary header in file ", file, ".");
}
// make sure there's a terminator zero character, as input must be ASCIIZ
if (!memcmp(buffer.data(), "3dmo", 4)) {
buffer.push_back(0);
}
// Get the path for external assets
std::string folderName("./");
std::string::size_type pos = file.find_last_of("\\/");
if (pos != std::string::npos) {
folderName = file.substr(0, pos);
if (!folderName.empty()) {
pIOHandler->PushDirectory(folderName);
}
}
//DefaultLogger::create("/dev/stderr", Logger::VERBOSE);
ASSIMP_LOG_DEBUG("M3D: loading ", file);
// let the C SDK do the hard work for us
M3DWrapper m3d(pIOHandler, buffer);
if (!m3d) {
throw DeadlyImportError("Unable to parse ", file, " as M3D.");
}
// create the root node
pScene->mRootNode = new aiNode;
pScene->mRootNode->mName = aiString(m3d.Name());
pScene->mRootNode->mTransformation = aiMatrix4x4();
pScene->mRootNode->mNumChildren = 0;
mScene = pScene;
ASSIMP_LOG_DEBUG("M3D: root node ", m3d.Name());
// now we just have to fill up the Assimp structures in pScene
importMaterials(m3d);
importTextures(m3d);
importBones(m3d, M3D_NOTDEFINED, pScene->mRootNode);
importMeshes(m3d);
importAnimations(m3d);
// Pop directory stack
if (pIOHandler->StackSize() > 0) {
pIOHandler->PopDirectory();
}
}
// ------------------------------------------------------------------------------------------------
// convert materials. properties are converted using a static table in M3DMaterials.h
void M3DImporter::importMaterials(const M3DWrapper &m3d) {
unsigned int i, j, k, l, n;
m3dm_t *m;
aiString name = aiString(AI_DEFAULT_MATERIAL_NAME);
aiColor4D c;
ai_real f;
ai_assert(mScene != nullptr);
ai_assert(m3d);
mScene->mNumMaterials = m3d->nummaterial + 1;
mScene->mMaterials = new aiMaterial *[mScene->mNumMaterials];
ASSIMP_LOG_DEBUG("M3D: importMaterials ", mScene->mNumMaterials);
// add a default material as first
aiMaterial *defaultMat = new aiMaterial;
defaultMat->AddProperty(&name, AI_MATKEY_NAME);
c.a = 1.0f;
c.b = c.g = c.r = 0.6f;
defaultMat->AddProperty(&c, 1, AI_MATKEY_COLOR_DIFFUSE);
mScene->mMaterials[0] = defaultMat;
if (!m3d->nummaterial || !m3d->material) {
return;
}
for (i = 0; i < m3d->nummaterial; i++) {
m = &m3d->material[i];
aiMaterial *newMat = new aiMaterial;
name.Set(std::string(m->name));
newMat->AddProperty(&name, AI_MATKEY_NAME);
for (j = 0; j < m->numprop; j++) {
// look up property type
// 0 - 127 scalar values,
// 128 - 255 the same properties but for texture maps
k = 256;
for (l = 0; l < sizeof(m3d_propertytypes) / sizeof(m3d_propertytypes[0]); l++)
if (m->prop[j].type == m3d_propertytypes[l].id ||
m->prop[j].type == m3d_propertytypes[l].id + 128) {
k = l;
break;
}
// should never happen, but be safe than sorry
if (k == 256)
continue;
// scalar properties
if (m->prop[j].type < 128 && aiProps[k].pKey) {
switch (m3d_propertytypes[k].format) {
case m3dpf_color:
c = mkColor(m->prop[j].value.color);
newMat->AddProperty(&c, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
break;
case m3dpf_float:
f = m->prop[j].value.fnum;
newMat->AddProperty(&f, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
break;
default:
n = m->prop[j].value.num;
if (m->prop[j].type == m3dp_il) {
switch (n) {
case 0:
n = aiShadingMode_NoShading;
break;
case 2:
n = aiShadingMode_Phong;
break;
default:
n = aiShadingMode_Gouraud;
break;
}
}
newMat->AddProperty(&n, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
break;
}
}
// texture map properties
if (m->prop[j].type >= 128 && aiTxProps[k].pKey &&
// extra check, should never happen, do we have the referred texture?
m->prop[j].value.textureid < m3d->numtexture &&
m3d->texture[m->prop[j].value.textureid].name) {
name.Set(std::string(std::string(m3d->texture[m->prop[j].value.textureid].name) + ".png"));
newMat->AddProperty(&name, aiTxProps[k].pKey, aiTxProps[k].type, aiTxProps[k].index);
n = 0;
newMat->AddProperty(&n, 1, _AI_MATKEY_UVWSRC_BASE, aiProps[k].type, aiProps[k].index);
}
}
mScene->mMaterials[i + 1] = newMat;
}
}
// ------------------------------------------------------------------------------------------------
// import textures, this is the simplest of all
void M3DImporter::importTextures(const M3DWrapper &m3d) {
unsigned int i;
const char *formatHint[] = {
"rgba0800",
"rgba0808",
"rgba8880",
"rgba8888"
};
m3dtx_t *t;
ai_assert(mScene != nullptr);
ai_assert(m3d);
mScene->mNumTextures = m3d->numtexture;
ASSIMP_LOG_DEBUG("M3D: importTextures ", mScene->mNumTextures);
if (!m3d->numtexture || !m3d->texture) {
return;
}
mScene->mTextures = new aiTexture *[m3d->numtexture];
for (i = 0; i < m3d->numtexture; i++) {
unsigned int j, k;
t = &m3d->texture[i];
aiTexture *tx = new aiTexture;
tx->mFilename = aiString(std::string(t->name) + ".png");
if (!t->w || !t->h || !t->f || !t->d) {
/* without ASSIMP_USE_M3D_READFILECB, we only have the filename, but no texture data ever */
tx->mWidth = 0;
tx->mHeight = 0;
memcpy(tx->achFormatHint, "png\000", 4);
tx->pcData = nullptr;
} else {
/* if we have the texture loaded, set format hint and pcData too */
tx->mWidth = t->w;
tx->mHeight = t->h;
strcpy(tx->achFormatHint, formatHint[t->f - 1]);
tx->pcData = new aiTexel[tx->mWidth * tx->mHeight];
for (j = k = 0; j < tx->mWidth * tx->mHeight; j++) {
switch (t->f) {
case 1: tx->pcData[j].g = t->d[k++]; break;
case 2:
tx->pcData[j].g = t->d[k++];
tx->pcData[j].a = t->d[k++];
break;
case 3:
tx->pcData[j].r = t->d[k++];
tx->pcData[j].g = t->d[k++];
tx->pcData[j].b = t->d[k++];
tx->pcData[j].a = 255;
break;
case 4:
tx->pcData[j].r = t->d[k++];
tx->pcData[j].g = t->d[k++];
tx->pcData[j].b = t->d[k++];
tx->pcData[j].a = t->d[k++];
break;
}
}
}
mScene->mTextures[i] = tx;
}
}
// ------------------------------------------------------------------------------------------------
// this is tricky. M3D has a global vertex and UV list, and faces are indexing them
// individually. In assimp there're per mesh vertex and UV lists, and they must be
// indexed simultaneously.
void M3DImporter::importMeshes(const M3DWrapper &m3d) {
ASSIMP_LOG_DEBUG("M3D: importMeshes ", m3d->numface);
if (!m3d->numface || !m3d->face || !m3d->numvertex || !m3d->vertex) {
return;
}
unsigned int i, j, k, l, numpoly = 3, lastMat = M3D_INDEXMAX;
std::vector<aiMesh *> *meshes = new std::vector<aiMesh *>();
std::vector<aiFace> *faces = nullptr;
std::vector<aiVector3D> *vertices = nullptr;
std::vector<aiVector3D> *normals = nullptr;
std::vector<aiVector3D> *texcoords = nullptr;
std::vector<aiColor4D> *colors = nullptr;
std::vector<unsigned int> *vertexids = nullptr;
aiMesh *pMesh = nullptr;
ai_assert(mScene != nullptr);
ai_assert(m3d);
ai_assert(mScene->mRootNode != nullptr);
for (i = 0; i < m3d->numface; i++) {
// we must switch mesh if material changes
if (lastMat != m3d->face[i].materialid) {
lastMat = m3d->face[i].materialid;
if (pMesh && vertices && vertices->size() && faces && faces->size()) {
populateMesh(m3d, pMesh, faces, vertices, normals, texcoords, colors, vertexids);
meshes->push_back(pMesh);
delete faces;
delete vertices;
delete normals;
delete texcoords;
delete colors;
delete vertexids; // this is not stored in pMesh, just to collect bone vertices
}
pMesh = new aiMesh;
pMesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
pMesh->mMaterialIndex = lastMat + 1;
faces = new std::vector<aiFace>();
vertices = new std::vector<aiVector3D>();
normals = new std::vector<aiVector3D>();
texcoords = new std::vector<aiVector3D>();
colors = new std::vector<aiColor4D>();
vertexids = new std::vector<unsigned int>();
}
// add a face to temporary vector
aiFace *pFace = new aiFace;
pFace->mNumIndices = numpoly;
pFace->mIndices = new unsigned int[numpoly];
for (j = 0; j < numpoly; j++) {
aiVector3D pos, uv, norm;
k = static_cast<unsigned int>(vertices->size());
pFace->mIndices[j] = k;
l = m3d->face[i].vertex[j];
if (l >= m3d->numvertex) continue;
pos.x = m3d->vertex[l].x;
pos.y = m3d->vertex[l].y;
pos.z = m3d->vertex[l].z;
vertices->push_back(pos);
colors->push_back(mkColor(m3d->vertex[l].color));
// add a bone to temporary vector
if (m3d->vertex[l].skinid != M3D_UNDEF && m3d->vertex[l].skinid != M3D_INDEXMAX && m3d->skin && m3d->bone) {
// this is complicated, because M3D stores a list of bone id / weight pairs per
// vertex but assimp uses lists of local vertex id/weight pairs per local bone list
vertexids->push_back(l);
}
l = m3d->face[i].texcoord[j];
if (l != M3D_UNDEF && l < m3d->numtmap) {
uv.x = m3d->tmap[l].u;
uv.y = m3d->tmap[l].v;
uv.z = 0.0;
texcoords->push_back(uv);
}
l = m3d->face[i].normal[j];
if (l != M3D_UNDEF && l < m3d->numvertex) {
norm.x = m3d->vertex[l].x;
norm.y = m3d->vertex[l].y;
norm.z = m3d->vertex[l].z;
normals->push_back(norm);
}
}
faces->push_back(*pFace);
delete pFace;
}
// if there's data left in the temporary vectors, flush them
if (pMesh && vertices->size() && faces->size()) {
populateMesh(m3d, pMesh, faces, vertices, normals, texcoords, colors, vertexids);
meshes->push_back(pMesh);
}
// create global mesh list in scene
mScene->mNumMeshes = static_cast<unsigned int>(meshes->size());
mScene->mMeshes = new aiMesh *[mScene->mNumMeshes];
std::copy(meshes->begin(), meshes->end(), mScene->mMeshes);
// create mesh indices in root node
mScene->mRootNode->mNumMeshes = static_cast<unsigned int>(meshes->size());
mScene->mRootNode->mMeshes = new unsigned int[meshes->size()];
for (i = 0; i < meshes->size(); i++) {
mScene->mRootNode->mMeshes[i] = i;
}
delete meshes;
if (faces) delete faces;
if (vertices) delete vertices;
if (normals) delete normals;
if (texcoords) delete texcoords;
if (colors) delete colors;
if (vertexids) delete vertexids;
}
// ------------------------------------------------------------------------------------------------
// a reentrant node parser. Otherwise this is simple
void M3DImporter::importBones(const M3DWrapper &m3d, unsigned int parentid, aiNode *pParent) {
unsigned int i, n;
ai_assert(pParent != nullptr);
ai_assert(mScene != nullptr);
ai_assert(m3d);
ASSIMP_LOG_DEBUG("M3D: importBones ", m3d->numbone, " parentid ", (int)parentid);
if (!m3d->numbone || !m3d->bone) {
return;
}
for (n = 0, i = parentid + 1; i < m3d->numbone; i++) {
if (m3d->bone[i].parent == parentid) {
n++;
}
}
pParent->mChildren = new aiNode *[n];
for (i = parentid + 1; i < m3d->numbone; i++) {
if (m3d->bone[i].parent == parentid) {
aiNode *pChild = new aiNode;
pChild->mParent = pParent;
pChild->mName = aiString(std::string(m3d->bone[i].name));
convertPose(m3d, &pChild->mTransformation, m3d->bone[i].pos, m3d->bone[i].ori);
pChild->mNumChildren = 0;
pParent->mChildren[pParent->mNumChildren] = pChild;
pParent->mNumChildren++;
importBones(m3d, i, pChild);
}
}
}
// ------------------------------------------------------------------------------------------------
// this is another headache. M3D stores list of changed bone id/position/orientation triplets and
// a timestamp per frame, but assimp needs timestamp and lists of position, orientation lists per
// bone, so we have to convert between the two conceptually different representation forms
void M3DImporter::importAnimations(const M3DWrapper &m3d) {
unsigned int i, j, k, l, pos, ori;
double t;
m3da_t *a;
ai_assert(mScene != nullptr);
ai_assert(m3d);
mScene->mNumAnimations = m3d->numaction;
ASSIMP_LOG_DEBUG("M3D: importAnimations ", mScene->mNumAnimations);
if (!m3d->numaction || !m3d->action || !m3d->numbone || !m3d->bone || !m3d->vertex) {
return;
}
mScene->mAnimations = new aiAnimation *[m3d->numaction];
for (i = 0; i < m3d->numaction; i++) {
a = &m3d->action[i];
aiAnimation *pAnim = new aiAnimation;
pAnim->mName = aiString(std::string(a->name));
pAnim->mDuration = ((double)a->durationmsec) / 10;
pAnim->mTicksPerSecond = 100;
// now we know how many bones are referenced in this animation
pAnim->mNumChannels = m3d->numbone;
pAnim->mChannels = new aiNodeAnim *[pAnim->mNumChannels];
for (l = 0; l < m3d->numbone; l++) {
unsigned int n;
pAnim->mChannels[l] = new aiNodeAnim;
pAnim->mChannels[l]->mNodeName = aiString(std::string(m3d->bone[l].name));
// now n is the size of positions / orientations arrays
pAnim->mChannels[l]->mNumPositionKeys = pAnim->mChannels[l]->mNumRotationKeys = a->numframe;
pAnim->mChannels[l]->mPositionKeys = new aiVectorKey[a->numframe];
pAnim->mChannels[l]->mRotationKeys = new aiQuatKey[a->numframe];
pos = m3d->bone[l].pos;
ori = m3d->bone[l].ori;
for (j = n = 0; j < a->numframe; j++) {
t = ((double)a->frame[j].msec) / 10;
for (k = 0; k < a->frame[j].numtransform; k++) {
if (a->frame[j].transform[k].boneid == l) {
pos = a->frame[j].transform[k].pos;
ori = a->frame[j].transform[k].ori;
}
}
if (pos >= m3d->numvertex || ori >= m3d->numvertex) continue;
m3dv_t *v = &m3d->vertex[pos];
m3dv_t *q = &m3d->vertex[ori];
pAnim->mChannels[l]->mPositionKeys[j].mTime = t;
pAnim->mChannels[l]->mPositionKeys[j].mValue.x = v->x;
pAnim->mChannels[l]->mPositionKeys[j].mValue.y = v->y;
pAnim->mChannels[l]->mPositionKeys[j].mValue.z = v->z;
pAnim->mChannels[l]->mRotationKeys[j].mTime = t;
pAnim->mChannels[l]->mRotationKeys[j].mValue.w = q->w;
pAnim->mChannels[l]->mRotationKeys[j].mValue.x = q->x;
pAnim->mChannels[l]->mRotationKeys[j].mValue.y = q->y;
pAnim->mChannels[l]->mRotationKeys[j].mValue.z = q->z;
} // foreach frame
} // foreach bones
mScene->mAnimations[i] = pAnim;
}
}
// ------------------------------------------------------------------------------------------------
// convert uint32_t into aiColor4D
aiColor4D M3DImporter::mkColor(uint32_t c) {
aiColor4D color;
color.a = ((float)((c >> 24) & 0xff)) / 255;
color.b = ((float)((c >> 16) & 0xff)) / 255;
color.g = ((float)((c >> 8) & 0xff)) / 255;
color.r = ((float)((c >> 0) & 0xff)) / 255;
return color;
}
// ------------------------------------------------------------------------------------------------
// convert a position id and orientation id into a 4 x 4 transformation matrix
void M3DImporter::convertPose(const M3DWrapper &m3d, aiMatrix4x4 *m, unsigned int posid, unsigned int orientid) {
ai_assert(m != nullptr);
ai_assert(m3d);
ai_assert(posid != M3D_UNDEF);
ai_assert(posid < m3d->numvertex);
ai_assert(orientid != M3D_UNDEF);
ai_assert(orientid < m3d->numvertex);
if (!m3d->numvertex || !m3d->vertex)
return;
m3dv_t *p = &m3d->vertex[posid];
m3dv_t *q = &m3d->vertex[orientid];
/* quaternion to matrix. Do NOT use aiQuaternion to aiMatrix3x3, gives bad results */
if (q->x == 0.0 && q->y == 0.0 && q->z >= 0.7071065 && q->z <= 0.7071075 && q->w == 0.0) {
m->a2 = m->a3 = m->b1 = m->b3 = m->c1 = m->c2 = 0.0;
m->a1 = m->b2 = m->c3 = -1.0;
} else {
m->a1 = 1 - 2 * (q->y * q->y + q->z * q->z);
if (m->a1 > -M3D_EPSILON && m->a1 < M3D_EPSILON) m->a1 = 0.0;
m->a2 = 2 * (q->x * q->y - q->z * q->w);
if (m->a2 > -M3D_EPSILON && m->a2 < M3D_EPSILON) m->a2 = 0.0;
m->a3 = 2 * (q->x * q->z + q->y * q->w);
if (m->a3 > -M3D_EPSILON && m->a3 < M3D_EPSILON) m->a3 = 0.0;
m->b1 = 2 * (q->x * q->y + q->z * q->w);
if (m->b1 > -M3D_EPSILON && m->b1 < M3D_EPSILON) m->b1 = 0.0;
m->b2 = 1 - 2 * (q->x * q->x + q->z * q->z);
if (m->b2 > -M3D_EPSILON && m->b2 < M3D_EPSILON) m->b2 = 0.0;
m->b3 = 2 * (q->y * q->z - q->x * q->w);
if (m->b3 > -M3D_EPSILON && m->b3 < M3D_EPSILON) m->b3 = 0.0;
m->c1 = 2 * (q->x * q->z - q->y * q->w);
if (m->c1 > -M3D_EPSILON && m->c1 < M3D_EPSILON) m->c1 = 0.0;
m->c2 = 2 * (q->y * q->z + q->x * q->w);
if (m->c2 > -M3D_EPSILON && m->c2 < M3D_EPSILON) m->c2 = 0.0;
m->c3 = 1 - 2 * (q->x * q->x + q->y * q->y);
if (m->c3 > -M3D_EPSILON && m->c3 < M3D_EPSILON) m->c3 = 0.0;
}
/* set translation */
m->a4 = p->x;
m->b4 = p->y;
m->c4 = p->z;
m->d1 = 0;
m->d2 = 0;
m->d3 = 0;
m->d4 = 1;
}
// ------------------------------------------------------------------------------------------------
// find a node by name
aiNode *M3DImporter::findNode(aiNode *pNode, const aiString &name) {
ai_assert(pNode != nullptr);
ai_assert(mScene != nullptr);
if (pNode->mName == name) {
return pNode;
}
for (unsigned int i = 0; i < pNode->mNumChildren; i++) {
aiNode *pChild = findNode(pNode->mChildren[i], name);
if (pChild) {
return pChild;
}
}
return nullptr;
}
// ------------------------------------------------------------------------------------------------
// fills up offsetmatrix in mBones
void M3DImporter::calculateOffsetMatrix(aiNode *pNode, aiMatrix4x4 *m) {
ai_assert(pNode != nullptr);
ai_assert(mScene != nullptr);
if (pNode->mParent) {
calculateOffsetMatrix(pNode->mParent, m);
*m *= pNode->mTransformation;
} else {
*m = pNode->mTransformation;
}
}
// ------------------------------------------------------------------------------------------------
// because M3D has a global mesh, global vertex ids and stores materialid on the face, we need
// temporary lists to collect data for an aiMesh, which requires local arrays and local indices
// this function fills up an aiMesh with those temporary lists
void M3DImporter::populateMesh(const M3DWrapper &m3d, aiMesh *pMesh, std::vector<aiFace> *faces, std::vector<aiVector3D> *vertices,
std::vector<aiVector3D> *normals, std::vector<aiVector3D> *texcoords, std::vector<aiColor4D> *colors,
std::vector<unsigned int> *vertexids) {
ai_assert(pMesh != nullptr);
ai_assert(faces != nullptr);
ai_assert(vertices != nullptr);
ai_assert(normals != nullptr);
ai_assert(texcoords != nullptr);
ai_assert(colors != nullptr);
ai_assert(vertexids != nullptr);
ai_assert(m3d);
ASSIMP_LOG_DEBUG("M3D: populateMesh numvertices ", vertices->size(), " numfaces ", faces->size(),
" numnormals ", normals->size(), " numtexcoord ", texcoords->size(), " numbones ", m3d->numbone);
if (vertices->size() && faces->size()) {
pMesh->mNumFaces = static_cast<unsigned int>(faces->size());
pMesh->mFaces = new aiFace[pMesh->mNumFaces];
std::copy(faces->begin(), faces->end(), pMesh->mFaces);
pMesh->mNumVertices = static_cast<unsigned int>(vertices->size());
pMesh->mVertices = new aiVector3D[pMesh->mNumVertices];
std::copy(vertices->begin(), vertices->end(), pMesh->mVertices);
if (normals->size() == vertices->size()) {
pMesh->mNormals = new aiVector3D[pMesh->mNumVertices];
std::copy(normals->begin(), normals->end(), pMesh->mNormals);
}
if (texcoords->size() == vertices->size()) {
pMesh->mTextureCoords[0] = new aiVector3D[pMesh->mNumVertices];
std::copy(texcoords->begin(), texcoords->end(), pMesh->mTextureCoords[0]);
pMesh->mNumUVComponents[0] = 2;
}
if (colors->size() == vertices->size()) {
pMesh->mColors[0] = new aiColor4D[pMesh->mNumVertices];
std::copy(colors->begin(), colors->end(), pMesh->mColors[0]);
}
// this is complicated, because M3D stores a list of bone id / weight pairs per
// vertex but assimp uses lists of local vertex id/weight pairs per local bone list
pMesh->mNumBones = m3d->numbone;
// we need aiBone with mOffsetMatrix for bones without weights as well
if (pMesh->mNumBones && m3d->numbone && m3d->bone) {
pMesh->mBones = new aiBone *[pMesh->mNumBones];
for (unsigned int i = 0; i < m3d->numbone; i++) {
aiNode *pNode;
pMesh->mBones[i] = new aiBone;
pMesh->mBones[i]->mName = aiString(std::string(m3d->bone[i].name));
pMesh->mBones[i]->mNumWeights = 0;
pNode = findNode(mScene->mRootNode, pMesh->mBones[i]->mName);
if (pNode) {
calculateOffsetMatrix(pNode, &pMesh->mBones[i]->mOffsetMatrix);
pMesh->mBones[i]->mOffsetMatrix.Inverse();
} else
pMesh->mBones[i]->mOffsetMatrix = aiMatrix4x4();
}
if (vertexids->size() && m3d->numvertex && m3d->vertex && m3d->numskin && m3d->skin) {
unsigned int i, j;
// first count how many vertices we have per bone
for (i = 0; i < vertexids->size(); i++) {
if (vertexids->at(i) >= m3d->numvertex) {
continue;
}
unsigned int s = m3d->vertex[vertexids->at(i)].skinid;
if (s != M3D_UNDEF && s != M3D_INDEXMAX) {
for (unsigned int k = 0; k < M3D_NUMBONE && m3d->skin[s].weight[k] > 0.0; k++) {
aiString name = aiString(std::string(m3d->bone[m3d->skin[s].boneid[k]].name));
for (j = 0; j < pMesh->mNumBones; j++) {
if (pMesh->mBones[j]->mName == name) {
pMesh->mBones[j]->mNumWeights++;
break;
}
}
}
}
}
// allocate mWeights
for (j = 0; j < pMesh->mNumBones; j++) {
aiBone *pBone = pMesh->mBones[j];
if (pBone->mNumWeights) {
pBone->mWeights = new aiVertexWeight[pBone->mNumWeights];
pBone->mNumWeights = 0;
}
}
// fill up with data
for (i = 0; i < vertexids->size(); i++) {
if (vertexids->at(i) >= m3d->numvertex) continue;
unsigned int s = m3d->vertex[vertexids->at(i)].skinid;
if (s != M3D_UNDEF && s != M3D_INDEXMAX && s < m3d->numskin) {
for (unsigned int k = 0; k < M3D_NUMBONE && m3d->skin[s].weight[k] > 0.0; k++) {
if (m3d->skin[s].boneid[k] >= m3d->numbone) continue;
aiString name = aiString(std::string(m3d->bone[m3d->skin[s].boneid[k]].name));
for (j = 0; j < pMesh->mNumBones; j++) {
if (pMesh->mBones[j]->mName == name) {
aiBone *pBone = pMesh->mBones[j];
pBone->mWeights[pBone->mNumWeights].mVertexId = i;
pBone->mWeights[pBone->mNumWeights].mWeight = m3d->skin[s].weight[k];
pBone->mNumWeights++;
break;
}
}
} // foreach skin
}
} // foreach vertexids
}
}
}
}
// ------------------------------------------------------------------------------------------------
} // Namespace Assimp
#endif // !! ASSIMP_BUILD_NO_M3D_IMPORTER

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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 M3DImporter.h
* @brief Declares the importer class to read a scene from a Model 3D file
*/
#ifndef AI_M3DIMPORTER_H_INC
#define AI_M3DIMPORTER_H_INC
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#include <assimp/BaseImporter.h>
#include <assimp/material.h>
#include <vector>
struct aiMesh;
struct aiNode;
struct aiMaterial;
struct aiFace;
namespace Assimp {
class M3DWrapper;
class M3DImporter : public BaseImporter {
public:
/// \brief Default constructor
M3DImporter();
~M3DImporter() override {}
/// \brief Returns whether the class can handle the format of the given file.
/// \remark See BaseImporter::CanRead() for details.
bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const override;
protected:
//! \brief Appends the supported extension.
const aiImporterDesc *GetInfo() const override;
//! \brief File import implementation.
void InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) override;
private:
void importMaterials(const M3DWrapper &m3d);
void importTextures(const M3DWrapper &m3d);
void importMeshes(const M3DWrapper &m3d);
void importBones(const M3DWrapper &m3d, unsigned int parentid, aiNode *pParent);
void importAnimations(const M3DWrapper &m3d);
// helper functions
aiColor4D mkColor(uint32_t c);
void convertPose(const M3DWrapper &m3d, aiMatrix4x4 *m, unsigned int posid, unsigned int orientid);
aiNode *findNode(aiNode *pNode, const aiString &name);
void calculateOffsetMatrix(aiNode *pNode, aiMatrix4x4 *m);
void populateMesh(const M3DWrapper &m3d, aiMesh *pMesh, std::vector<aiFace> *faces, std::vector<aiVector3D> *verteces,
std::vector<aiVector3D> *normals, std::vector<aiVector3D> *texcoords, std::vector<aiColor4D> *colors,
std::vector<unsigned int> *vertexids);
private:
aiScene *mScene = nullptr; // the scene to import to
};
} // Namespace Assimp
#endif // ASSIMP_BUILD_NO_M3D_IMPORTER
#endif // AI_M3DIMPORTER_H_INC

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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 M3DMaterials.h
* @brief Declares the Assimp and Model 3D file material type relations
*/
#ifndef AI_M3DMATERIALS_H_INC
#define AI_M3DMATERIALS_H_INC
/*
* In the m3d.h header, there's a static array which defines the material
* properties, called m3d_propertytypes. These must have the same size, and
* list the matching Assimp materials for those properties. Used by both the
* M3DImporter and the M3DExporter, so you have to define these relations
* only once. D.R.Y. and K.I.S.S.
*/
typedef struct {
const char *pKey;
unsigned int type;
unsigned int index;
} aiMatProp;
/* --- Scalar Properties --- !!!!! must match m3d_propertytypes !!!!! */
static const aiMatProp aiProps[] = {
{ AI_MATKEY_COLOR_DIFFUSE }, /* m3dp_Kd */
{ AI_MATKEY_COLOR_AMBIENT }, /* m3dp_Ka */
{ AI_MATKEY_COLOR_SPECULAR }, /* m3dp_Ks */
{ AI_MATKEY_SHININESS }, /* m3dp_Ns */
{ AI_MATKEY_COLOR_EMISSIVE }, /* m3dp_Ke */
{ AI_MATKEY_COLOR_REFLECTIVE }, /* m3dp_Tf */
{ AI_MATKEY_BUMPSCALING }, /* m3dp_Km */
{ AI_MATKEY_OPACITY }, /* m3dp_d */
{ AI_MATKEY_SHADING_MODEL }, /* m3dp_il */
{ nullptr, 0, 0 }, /* m3dp_Pr */
{ AI_MATKEY_REFLECTIVITY }, /* m3dp_Pm */
{ nullptr, 0, 0 }, /* m3dp_Ps */
{ AI_MATKEY_REFRACTI }, /* m3dp_Ni */
{ nullptr, 0, 0 }, /* m3dp_Nt */
{ nullptr, 0, 0 },
{ nullptr, 0, 0 },
{ nullptr, 0, 0 }
};
/* --- Texture Map Properties --- !!!!! must match m3d_propertytypes !!!!! */
static const aiMatProp aiTxProps[] = {
{ AI_MATKEY_TEXTURE_DIFFUSE(0) }, /* m3dp_map_Kd */
{ AI_MATKEY_TEXTURE(aiTextureType_AMBIENT_OCCLUSION,0) },/* m3dp_map_Ka */
{ AI_MATKEY_TEXTURE_SPECULAR(0) }, /* m3dp_map_Ks */
{ AI_MATKEY_TEXTURE_SHININESS(0) }, /* m3dp_map_Ns */
{ AI_MATKEY_TEXTURE_EMISSIVE(0) }, /* m3dp_map_Ke */
{ nullptr, 0, 0 }, /* m3dp_map_Tf */
{ AI_MATKEY_TEXTURE_HEIGHT(0) }, /* m3dp_bump */
{ AI_MATKEY_TEXTURE_OPACITY(0) }, /* m3dp_map_d */
{ AI_MATKEY_TEXTURE_NORMALS(0) }, /* m3dp_map_N */
{ AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE_ROUGHNESS,0) },/* m3dp_map_Pr */
{ AI_MATKEY_TEXTURE(aiTextureType_METALNESS,0) }, /* m3dp_map_Pm */
{ nullptr, 0, 0 }, /* m3dp_map_Ps */
{ AI_MATKEY_TEXTURE(aiTextureType_REFLECTION,0) }, /* m3dp_map_Ni */
{ nullptr, 0, 0 }, /* m3dp_map_Nt */
{ nullptr, 0, 0 },
{ nullptr, 0, 0 },
{ nullptr, 0, 0 }
};
#endif // AI_M3DMATERIALS_H_INC

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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_M3D_IMPORTER
#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER)
#include "M3DWrapper.h"
#include <assimp/DefaultIOSystem.h>
#include <assimp/IOStreamBuffer.h>
#include <assimp/ai_assert.h>
#ifdef ASSIMP_USE_M3D_READFILECB
#if (__cplusplus >= 201103L) || !defined(_MSC_VER) || (_MSC_VER >= 1900) // C++11 and MSVC 2015 onwards
#define threadlocal thread_local
#else
#if defined(_MSC_VER) && (_MSC_VER >= 1800) // there's an alternative for MSVC 2013
#define threadlocal __declspec(thread)
#else
#define threadlocal
#endif
#endif
extern "C" {
// workaround: the M3D SDK expects a C callback, but we want to use Assimp::IOSystem to implement that
threadlocal void *m3dimporter_pIOHandler;
unsigned char *m3dimporter_readfile(char *fn, unsigned int *size) {
ai_assert(nullptr != fn);
ai_assert(nullptr != size);
std::string file(fn);
std::unique_ptr<Assimp::IOStream> pStream(
(reinterpret_cast<Assimp::IOSystem *>(m3dimporter_pIOHandler))->Open(file, "rb"));
size_t fileSize = 0;
unsigned char *data = nullptr;
// sometimes pStream is nullptr in a single-threaded scenario too for some reason
// (should be an empty object returning nothing I guess)
if (pStream) {
fileSize = pStream->FileSize();
// should be allocated with malloc(), because the library will call free() to deallocate
data = (unsigned char *)malloc(fileSize);
if (!data || !pStream.get() || !fileSize || fileSize != pStream->Read(data, 1, fileSize)) {
pStream.reset();
*size = 0;
// don't throw a deadly exception, it's not fatal if we can't read an external asset
return nullptr;
}
pStream.reset();
}
*size = (int)fileSize;
return data;
}
}
#endif
namespace Assimp {
M3DWrapper::M3DWrapper() {
// use malloc() here because m3d_free() will call free()
m3d_ = (m3d_t *)calloc(1, sizeof(m3d_t));
}
M3DWrapper::M3DWrapper(IOSystem *pIOHandler, const std::vector<unsigned char> &buffer) {
if (nullptr == pIOHandler) {
ai_assert(nullptr != pIOHandler);
}
#ifdef ASSIMP_USE_M3D_READFILECB
// pass this IOHandler to the C callback in a thread-local pointer
m3dimporter_pIOHandler = pIOHandler;
m3d_ = m3d_load(const_cast<unsigned char *>(buffer.data()), m3dimporter_readfile, free, nullptr);
// Clear the C callback
m3dimporter_pIOHandler = nullptr;
#else
m3d_ = m3d_load(const_cast<unsigned char *>(buffer.data()), nullptr, nullptr, nullptr);
#endif
}
M3DWrapper::~M3DWrapper() {
reset();
}
void M3DWrapper::reset() {
ClearSave();
if (m3d_) {
m3d_free(m3d_);
}
m3d_ = nullptr;
}
unsigned char *M3DWrapper::Save(int quality, int flags, unsigned int &size) {
#if (!(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER))
ClearSave();
saved_output_ = m3d_save(m3d_, quality, flags, &size);
return saved_output_;
#else
(void)quality;
(void)flags;
(void)size;
return nullptr;
#endif
}
void M3DWrapper::ClearSave() {
if (saved_output_) {
M3D_FREE(saved_output_);
}
saved_output_ = nullptr;
}
} // namespace Assimp
#endif
#endif

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#pragma once
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
Copyright (c) 2019 bzt
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 M3DWrapper.h
* @brief Declares a class to wrap the C m3d SDK
*/
#ifndef AI_M3DWRAPPER_H_INC
#define AI_M3DWRAPPER_H_INC
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER)
#include <memory>
#include <vector>
#include <string>
// Assimp specific M3D configuration. Comment out these defines to remove functionality
//#define ASSIMP_USE_M3D_READFILECB
// Share stb_image's PNG loader with other importers/exporters instead of bringing our own copy.
#define STBI_ONLY_PNG
#include <stb/stb_image.h>
#include "m3d.h"
namespace Assimp {
class IOSystem;
/// brief The M3D-Wrapper, provudes c++ access to the data.
class M3DWrapper {
public:
/// Construct an empty M3D model
explicit M3DWrapper();
/// Construct an M3D model from provided buffer
/// @note The m3d.h SDK function does not mark the data as const. Have assumed it does not write.
/// BUG: SECURITY: The m3d.h SDK cannot be informed of the buffer size. BUFFER OVERFLOW IS CERTAIN
explicit M3DWrapper(IOSystem *pIOHandler, const std::vector<unsigned char> &buffer);
/// Theclasss destructor.
~M3DWrapper();
/// Will reset the wrapper, all data will become nullptr.
void reset();
// The Name access, empty string returned when no m3d instance.
std::string Name() const;
/// Executes a save.
unsigned char *Save(int quality, int flags, unsigned int &size);
/// Clearer
void ClearSave();
/// True for m3d instance exists.
explicit operator bool() const;
// Allow direct access to M3D API
m3d_t *operator->() const;
m3d_t *M3D() const;
private:
m3d_t *m3d_ = nullptr;
unsigned char *saved_output_ = nullptr;
};
inline std::string M3DWrapper::Name() const {
if (nullptr != m3d_) {
if (nullptr != m3d_->name) {
return std::string(m3d_->name);
}
}
return std::string();
}
inline M3DWrapper::operator bool() const {
return m3d_ != nullptr;
}
inline m3d_t *M3DWrapper::operator->() const {
return m3d_;
}
inline m3d_t *M3DWrapper::M3D() const {
return m3d_;
}
} // namespace Assimp
#endif
#endif // ASSIMP_BUILD_NO_M3D_IMPORTER
#endif // AI_M3DWRAPPER_H_INC

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