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Updated Assimp

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Added initial behavior for ImageAssets to hold a list of GFX resources of different texture profiles to avoid mem leaks with incorrect-typed usages
Added function to ImageAsset to get best-fit asset, allowing for fallbacks if the requested assetID is not found
Added function to ShapeAsset to get best-fit asset, allowing for fallbacks if the requested assetID is not found
Disabled fields for dynamic and static shadowmap refresh rates
Moved noShape model to core/rendering/shapes to place it in a more logical module position
Added an include to avoid undefined type compile error and removed unneeded semicolon from zone code
Added call to reload probe textures when a reloadTextures call is made
Adjusted default directional light shadowmap settings to not be as extreme
Added utility function to probe manager to allow any class to request a 'best fit' list of probes that would affect a given location, allowing other classes such as fog or particles to utilize IBL. Also updated probeManager's forward rendering to utilize same function to reduce code duplication.
Shifted shape loader code to utilize assimp for loader consistency and testing
Changed render bin used for SSAO postfx so it runs at the right time
Made Core_Rendering module scan for assets
Updated loose file references to a number of assets to follow proper formatting
Refactored asset import code to follow a more consistent object heirarchy structure on importing assets, allowing more reliable cross-referencing between inbound items
Updated asset import logic for materials/images so that they properly utilize ImageType. Images correctly save out the assigned image type, materials reference the images' type to know what map slot they should be used in. Importer logic also updated to better find-and-add associated images based on type.
Cleaned up a bunch of old, outdated code in the asset importer
Added initial handling for in-place importing of files without needing to process them through the UI.
Added ability to edit module script from RMB context menu if torsion path is set
Updated list field code for variable inspector to utilize correct ownerObject field
This commit is contained in:
Areloch 2020-03-19 09:47:38 -05:00
parent 2d015bc426
commit 6ade6f08ce
545 changed files with 15077 additions and 8437 deletions
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648
Engine/lib/assimp/code/M3D/M3DExporter.cpp
View file

@ -2,7 +2,7 @@
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
Copyright (c) 2006-2020, assimp team
Copyright (c) 2019 bzt
All rights reserved.
@ -45,7 +45,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define M3D_IMPLEMENTATION
#define M3D_NOIMPORTER
#define M3D_EXPORTER
#define M3D_ASCII
#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
#define M3D_NODUP
#endif
@ -55,15 +54,17 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string>
#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/StreamWriter.h> // StreamWriterLE
#include <assimp/material.h> // aiTextureType
#include <assimp/scene.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 "M3DWrapper.h"
#include "M3DExporter.h"
#include "M3DMaterials.h"
@ -80,316 +81,357 @@ 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
* 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 )
: mScene(pScene)
, mProperties(pProperties)
, outfile()
, m3d(nullptr) { }
// Conversion functions
// ------------------------------------------------------------------------------------------------
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)
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;
}
// ------------------------------------------------------------------------------------------------
// 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 = _m3d_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 = _m3d_addtmap(m3d->tmap, &m3d->numtmap, &ti,
&idx);
m3d->face[n].texcoord[k] = (M3D_INDEX)idx;
}
// do we have normal vectors?
if(mesh->HasNormals()) {
vertex.color = 0;
vertex.x = mesh->mNormals[l].x;
vertex.y = mesh->mNormals[l].y;
vertex.z = mesh->mNormals[l].z;
m3d->vertex = _m3d_addnorm(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);
}
// 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 M3DExporter::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 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;
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 M3DExporter::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;
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 = 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 = 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 = 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 ExportSceneM3DA(
const char *pFile,
IOSystem *pIOSystem,
const aiScene *pScene,
const ExportProperties *pProperties
) {
#ifdef M3D_ASCII
// initialize the exporter
M3DExporter exporter(pScene, pProperties);
// perform ascii export
exporter.doExport(pFile, pIOSystem, true);
#else
throw DeadlyExportError("Assimp configured without M3D_ASCII support");
#endif
}
// ------------------------------------------------------------------------------------------------
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 = 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();
}
// ------------------------------------------------------------------------------------------------
// 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 // ASSIMP_BUILD_NO_M3D_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT