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Merge pull request #2805 from RichardTea/partial-cleanup-m3d 

Some cleanup of M3D support
pull/2814/head
Kim Kulling 2019-12-08 09:02:06 +01:00 committed by GitHub
parent e7ed315145 747e12465b
commit fbebeba2b0
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 1124 additions and 924 deletions
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2
code/CMakeLists.txt
View File

@ -411,6 +411,8 @@ ADD_ASSIMP_IMPORTER( M3D
M3D/M3DMaterials.h M3D/M3DMaterials.h
M3D/M3DImporter.h M3D/M3DImporter.h
M3D/M3DImporter.cpp M3D/M3DImporter.cpp
M3D/M3DWrapper.h
M3D/M3DWrapper.cpp
M3D/m3d.h M3D/m3d.h
) )

640
code/M3D/M3DExporter.cpp
View File

@ -55,17 +55,19 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string> #include <string>
#include <vector> #include <vector>
#include <assimp/version.h> // aiGetVersion
#include <assimp/IOSystem.hpp>
#include <assimp/Exporter.hpp>
#include <assimp/DefaultLogger.hpp>
#include <assimp/StreamWriter.h> // StreamWriterLE
#include <assimp/Exceptional.h> // DeadlyExportError #include <assimp/Exceptional.h> // DeadlyExportError
#include <assimp/StreamWriter.h> // StreamWriterLE
#include <assimp/material.h> // aiTextureType #include <assimp/material.h> // aiTextureType
#include <assimp/scene.h>
#include <assimp/mesh.h> #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 "M3DExporter.h"
#include "M3DMaterials.h" #include "M3DMaterials.h"
#include "M3DWrapper.h"
// RESOURCES: // RESOURCES:
// https://gitlab.com/bztsrc/model3d/blob/master/docs/m3d_format.md // https://gitlab.com/bztsrc/model3d/blob/master/docs/m3d_format.md
@ -80,341 +82,331 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* - aiAnimation -> m3d_action (frame with timestamp and list of bone id, position, orientation * - aiAnimation -> m3d_action (frame with timestamp and list of bone id, position, orientation
* triplets, instead of per bone timestamp + lists) * triplets, instead of per bone timestamp + lists)
*/ */
using namespace Assimp;
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 ExportSceneA3D (
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);
}
} // end of namespace Assimp
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
M3DExporter::M3DExporter ( const aiScene* pScene, const ExportProperties* pProperties ) // Conversion functions
: mScene(pScene)
, mProperties(pProperties)
, outfile()
, m3d(nullptr) { }
// ------------------------------------------------------------------------------------------------
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) );
}
// use malloc() here because m3d_free() will call free()
m3d = (m3d_t*)calloc(1, sizeof(m3d_t));
if(!m3d) {
throw DeadlyExportError( "memory allocation error" );
}
m3d->name = _m3d_safestr((char*)&mScene->mRootNode->mName.data, 2);
// Create a model from assimp structures
aiMatrix4x4 m;
NodeWalk(mScene->mRootNode, m);
// serialize the structures
unsigned int size;
unsigned char *output = m3d_save(m3d, M3D_EXP_FLOAT,
M3D_EXP_EXTRA | (toAscii ? M3D_EXP_ASCII : 0), &size);
m3d_free(m3d);
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();
}
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
// helper to add a vertex (private to NodeWalk) // helper to add a vertex (private to NodeWalk)
m3dv_t *M3DExporter::AddVrtx(m3dv_t *vrtx, uint32_t *numvrtx, m3dv_t *v, uint32_t *idx) 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->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->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->z == (M3D_FLOAT)-0.0) v->z = (M3D_FLOAT)0.0; if (v->w == (M3D_FLOAT)-0.0) v->w = (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));
vrtx = (m3dv_t*)M3D_REALLOC(vrtx, ((*numvrtx) + 1) * sizeof(m3dv_t)); memcpy(&vrtx[*numvrtx], v, sizeof(m3dv_t));
memcpy(&vrtx[*numvrtx], v, sizeof(m3dv_t)); *idx = *numvrtx;
*idx = *numvrtx; (*numvrtx)++;
(*numvrtx)++; return vrtx;
return vrtx;
} }
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
// helper to add a tmap (private to NodeWalk) // helper to add a tmap (private to NodeWalk)
m3dti_t *M3DExporter::AddTmap(m3dti_t *tmap, uint32_t *numtmap, m3dti_t *ti, uint32_t *idx) 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));
tmap = (m3dti_t*)M3D_REALLOC(tmap, ((*numtmap) + 1) * sizeof(m3dti_t)); memcpy(&tmap[*numtmap], ti, sizeof(m3dti_t));
memcpy(&tmap[*numtmap], ti, sizeof(m3dti_t)); *idx = *numtmap;
*idx = *numtmap; (*numtmap)++;
(*numtmap)++; return tmap;
return tmap;
}
// ------------------------------------------------------------------------------------------------
// recursive node walker
void M3DExporter::NodeWalk(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_INDEX)-1U;
if(mScene->mMaterials) {
// get the material for this mesh
mi = addMaterial(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] = -1U;
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 = -1U;
// 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(pNode->mChildren[i], nm);
}
} }
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
// convert aiColor4D into uint32_t // convert aiColor4D into uint32_t
uint32_t M3DExporter::mkColor(aiColor4D* c) uint32_t mkColor(aiColor4D *c) {
{ return ((uint8_t)(c->a * 255) << 24L) |
return ((uint8_t)(c->a*255) << 24L) | ((uint8_t)(c->b * 255) << 16L) |
((uint8_t)(c->b*255) << 16L) | ((uint8_t)(c->g * 255) << 8L) |
((uint8_t)(c->g*255) << 8L) | ((uint8_t)(c->r * 255) << 0L);
((uint8_t)(c->r*255) << 0L);
}
// ------------------------------------------------------------------------------------------------
// add a material to the output
M3D_INDEX M3DExporter::addMaterial(const aiMaterial *mat)
{
unsigned int mi = -1U;
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 == -1U) {
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 = _m3d_safestr((char*)&name.data, 0);
m3d->material[mi].numprop = 0;
m3d->material[mi].prop = NULL;
// 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)
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 */
*((uint32_t*)&f));
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, NULL, NULL, NULL,
NULL, NULL) == 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 = _m3d_safestr((char*)&name.data, 0);
for(j = 0, i = -1U; j < m3d->numtexture; j++)
if(!strcmp(fn, m3d->texture[j].name)) {
i = j;
free(fn);
break;
}
if(i == -1U) {
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 = NULL;
}
addProp(&m3d->material[mi],
m3d_propertytypes[k].id + 128, i);
}
}
}
}
return mi;
} }
// ------------------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------------------
// add a material property to the output // add a material property to the output
void M3DExporter::addProp(m3dm_t *m, uint8_t type, uint32_t value) void addProp(m3dm_t *m, uint8_t type, uint32_t value) {
{ unsigned int i;
unsigned int i; i = m->numprop++;
i = m->numprop++; m->prop = (m3dp_t *)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t));
m->prop = (m3dp_t*)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t)); if (!m->prop) {
if(!m->prop) { throw DeadlyExportError( "memory allocation error" ); } throw DeadlyExportError("memory allocation error");
m->prop[i].type = type; }
m->prop[i].value.num = value; m->prop[i].type = type;
m->prop[i].value.num = value;
} }
// ------------------------------------------------------------------------------------------------
// add a material to the output
M3D_INDEX addMaterial(const Assimp::M3DWrapper &m3d, const aiMaterial *mat) {
unsigned int mi = -1U;
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 == -1U) {
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 = _m3d_safestr((char *)&name.data, 0);
m3d->material[mi].numprop = 0;
m3d->material[mi].prop = NULL;
// 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)
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 */
*((uint32_t *)&f));
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, NULL, NULL, NULL,
NULL, NULL) == 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 = _m3d_safestr((char *)&name.data, 0);
for (j = 0, i = -1U; j < m3d->numtexture; j++)
if (!strcmp(fn, m3d->texture[j].name)) {
i = j;
free(fn);
break;
}
if (i == -1U) {
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 = NULL;
}
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 ExportSceneA3D(
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() {}
// ------------------------------------------------------------------------------------------------
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 = _m3d_safestr((char *)&mScene->mRootNode->mName.data, 2);
// 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();
}
// ------------------------------------------------------------------------------------------------
// 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_INDEX)-1U;
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] = -1U;
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 = -1U;
// 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 // ASSIMP_BUILD_NO_M3D_EXPORTER #endif // ASSIMP_BUILD_NO_M3D_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT #endif // ASSIMP_BUILD_NO_EXPORT

12
code/M3D/M3DExporter.h
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@ -48,8 +48,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef ASSIMP_BUILD_NO_M3D_EXPORTER #ifndef ASSIMP_BUILD_NO_M3D_EXPORTER
#include "m3d.h"
#include <assimp/types.h> #include <assimp/types.h>
//#include <assimp/material.h> //#include <assimp/material.h>
#include <assimp/StreamWriter.h> // StreamWriterLE #include <assimp/StreamWriter.h> // StreamWriterLE
@ -68,6 +66,8 @@ namespace Assimp
class IOStream; class IOStream;
class ExportProperties; class ExportProperties;
class M3DWrapper;
// --------------------------------------------------------------------- // ---------------------------------------------------------------------
/** Helper class to export a given scene to an M3D file. */ /** Helper class to export a given scene to an M3D file. */
// --------------------------------------------------------------------- // ---------------------------------------------------------------------
@ -83,15 +83,9 @@ namespace Assimp
const aiScene* mScene; // the scene to export const aiScene* mScene; // the scene to export
const ExportProperties* mProperties; // currently unused const ExportProperties* mProperties; // currently unused
std::shared_ptr<IOStream> outfile; // file to write to std::shared_ptr<IOStream> outfile; // file to write to
m3d_t *m3d; // model for the C library to convert to
// helper to do the recursive walking // helper to do the recursive walking
void NodeWalk(const aiNode* pNode, aiMatrix4x4 m); void NodeWalk(const M3DWrapper &m3d, const aiNode* pNode, aiMatrix4x4 m);
m3dv_t *AddVrtx(m3dv_t *vrtx, uint32_t *numvrtx, m3dv_t *v, uint32_t *idx);
m3dti_t *AddTmap(m3dti_t *tmap, uint32_t *numtmap, m3dti_t *ti, uint32_t *idx);
uint32_t mkColor(aiColor4D* c);
M3D_INDEX addMaterial(const aiMaterial *mat);
void addProp(m3dm_t *m, uint8_t type, uint32_t value);
}; };
} }

1102
code/M3D/M3DImporter.cpp
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File diff suppressed because it is too large Load Diff

53
code/M3D/M3DImporter.h
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@ -48,7 +48,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER #ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#include "m3d.h"
#include <assimp/BaseImporter.h> #include <assimp/BaseImporter.h>
#include <assimp/material.h> #include <assimp/material.h>
#include <vector> #include <vector>
@ -60,43 +59,41 @@ struct aiFace;
namespace Assimp { namespace Assimp {
class M3DWrapper;
class M3DImporter : public BaseImporter { class M3DImporter : public BaseImporter {
public: public:
/// \brief Default constructor /// \brief Default constructor
M3DImporter(); M3DImporter();
/// \brief Destructor
~M3DImporter();
public: public:
/// \brief Returns whether the class can handle the format of the given file. /// \brief Returns whether the class can handle the format of the given file.
/// \remark See BaseImporter::CanRead() for details. /// \remark See BaseImporter::CanRead() for details.
bool CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const; bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const;
private: private:
aiScene* mScene; // the scene to import to aiScene *mScene = nullptr; // the scene to import to
m3d_t *m3d; // model for the C library to convert from
//! \brief Appends the supported extension. //! \brief Appends the supported extension.
const aiImporterDesc* GetInfo () const; const aiImporterDesc *GetInfo() const;
//! \brief File import implementation. //! \brief File import implementation.
void InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler); void InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler);
void importMaterials(); void importMaterials(const M3DWrapper &m3d);
void importTextures(); void importTextures(const M3DWrapper &m3d);
void importMeshes(); void importMeshes(const M3DWrapper &m3d);
void importBones(unsigned int parentid, aiNode *pParent); void importBones(const M3DWrapper &m3d, unsigned int parentid, aiNode *pParent);
void importAnimations(); void importAnimations(const M3DWrapper &m3d);
// helper functions // helper functions
aiColor4D mkColor(uint32_t c); aiColor4D mkColor(uint32_t c);
void convertPose(aiMatrix4x4 *m, unsigned int posid, unsigned int orientid); void convertPose(const M3DWrapper &m3d, aiMatrix4x4 *m, unsigned int posid, unsigned int orientid);
aiNode *findNode(aiNode *pNode, aiString name); aiNode *findNode(aiNode *pNode, aiString name);
void calculateOffsetMatrix(aiNode *pNode, aiMatrix4x4 *m); void calculateOffsetMatrix(aiNode *pNode, aiMatrix4x4 *m);
void populateMesh(aiMesh *pMesh, std::vector<aiFace> *faces, std::vector<aiVector3D> *verteces, 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<aiVector3D> *normals, std::vector<aiVector3D> *texcoords, std::vector<aiColor4D> *colors,
std::vector<unsigned int> *vertexids); std::vector<unsigned int> *vertexids);
}; };
} // Namespace Assimp } // Namespace Assimp

142
code/M3D/M3DWrapper.cpp 100644
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@ -0,0 +1,142 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, 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.
----------------------------------------------------------------------
*/
#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER) || !ASSIMP_BUILD_NO_M3D_IMPORTER
#include "M3DWrapper.h"
#include <assimp/DefaultIOSystem.h>
#include <assimp/IOStreamBuffer.h>
#include <assimp/ai_assert.h>
#ifndef AI_M3D_USE_STDMUTEX
#if (__cplusplus >= 201103L) || (_MSC_VER >= 1900) // C++11 and MSVC 2015 onwards
#define AI_M3D_USE_STDMUTEX 1
#else
#define AI_M3D_USE_STDMUTEX 0
#endif
#endif
#if AI_M3D_USE_STDMUTEX
#include <mutex>
std::mutex file_mutex;
#endif
// workaround: the M3D SDK expects a C callback, but we want to use Assimp::IOSystem to implement that
// This makes it non-rentrant so lock a mutex (requires C++11)
extern "C" {
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 = NULL;
// sometimes pStream is nullptr 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;
}
}
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 AI_M3D_USE_STDMUTEX
// M3D is NOT thread-safe, so lock the global mutex
const std::lock_guard<std::mutex> lock(file_mutex);
#endif
// pass this IOHandler to the C callback
m3dimporter_pIOHandler = pIOHandler;
m3d_ = m3d_load(const_cast<unsigned char *>(buffer.data()), m3dimporter_readfile, free, nullptr);
// Clear the C callback
m3dimporter_pIOHandler = nullptr;
}
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
return nullptr;
#endif
}
void M3DWrapper::ClearSave() {
if (saved_output_)
M3D_FREE(saved_output_);
saved_output_ = nullptr;
}
} // namespace Assimp
#endif

97
code/M3D/M3DWrapper.h 100644
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@ -0,0 +1,97 @@
#pragma once
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, 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
#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER) || !ASSIMP_BUILD_NO_M3D_IMPORTER
#include <memory>
#include <vector>
#include <string>
#include "m3d.h"
namespace Assimp {
class IOSystem;
class M3DWrapper {
m3d_t *m3d_ = nullptr;
unsigned char *saved_output_ = nullptr;
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);
~M3DWrapper();
void reset();
// Name
inline std::string Name() const {
if (m3d_) return std::string(m3d_->name);
return std::string();
}
// Execute a save
unsigned char *Save(int quality, int flags, unsigned int &size);
void ClearSave();
inline explicit operator bool() const { return m3d_ != nullptr; }
// Allow direct access to M3D API
inline m3d_t *operator->() const { return m3d_; }
inline m3d_t *M3D() const { return m3d_; }
};
} // namespace Assimp
#endif
#endif // AI_M3DWRAPPER_H_INC