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ASELoader.cpp
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ASELoader.cpp
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/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2018, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/
/** @file ASELoader.cpp
* @brief Implementation of the ASE importer class
*/
#ifndef ASSIMP_BUILD_NO_ASE_IMPORTER
#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
// internal headers
#include "ASELoader.h"
#include <assimp/StringComparison.h>
#include <assimp/SkeletonMeshBuilder.h>
#include "TargetAnimation.h"
#include <assimp/Importer.hpp>
#include <assimp/IOSystem.hpp>
#include <assimp/DefaultLogger.hpp>
#include <assimp/scene.h>
#include <assimp/importerdesc.h>
#include <memory>
// utilities
#include <assimp/fast_atof.h>
using namespace Assimp;
using namespace Assimp::ASE;
static const aiImporterDesc desc = {
"ASE Importer",
"",
"",
"Similar to 3DS but text-encoded",
aiImporterFlags_SupportTextFlavour,
0,
0,
0,
0,
"ase ask"
};
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
ASEImporter::ASEImporter()
: mParser()
, mBuffer()
, pcScene()
, configRecomputeNormals()
, noSkeletonMesh()
{}
// ------------------------------------------------------------------------------------------------
// Destructor, private as well
ASEImporter::~ASEImporter()
{}
// ------------------------------------------------------------------------------------------------
// Returns whether the class can handle the format of the given file.
bool ASEImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool cs) const
{
// check file extension
const std::string extension = GetExtension(pFile);
if( extension == "ase" || extension == "ask")
return true;
if ((!extension.length() || cs) && pIOHandler) {
const char* tokens[] = {"*3dsmax_asciiexport"};
return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1);
}
return false;
}
// ------------------------------------------------------------------------------------------------
// Loader meta information
const aiImporterDesc* ASEImporter::GetInfo () const
{
return &desc;
}
// ------------------------------------------------------------------------------------------------
// Setup configuration options
void ASEImporter::SetupProperties(const Importer* pImp)
{
configRecomputeNormals = (pImp->GetPropertyInteger(
AI_CONFIG_IMPORT_ASE_RECONSTRUCT_NORMALS,1) ? true : false);
noSkeletonMesh = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_NO_SKELETON_MESHES,0) != 0;
}
// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void ASEImporter::InternReadFile( const std::string& pFile,
aiScene* pScene, IOSystem* pIOHandler)
{
std::unique_ptr<IOStream> file( pIOHandler->Open( pFile, "rb"));
// Check whether we can read from the file
if( file.get() == NULL) {
throw DeadlyImportError( "Failed to open ASE file " + pFile + ".");
}
// Allocate storage and copy the contents of the file to a memory buffer
std::vector<char> mBuffer2;
TextFileToBuffer(file.get(),mBuffer2);
this->mBuffer = &mBuffer2[0];
this->pcScene = pScene;
// ------------------------------------------------------------------
// Guess the file format by looking at the extension
// ASC is considered to be the older format 110,
// ASE is the actual version 200 (that is currently written by max)
// ------------------------------------------------------------------
unsigned int defaultFormat;
std::string::size_type s = pFile.length()-1;
switch (pFile.c_str()[s]) {
case 'C':
case 'c':
defaultFormat = AI_ASE_OLD_FILE_FORMAT;
break;
default:
defaultFormat = AI_ASE_NEW_FILE_FORMAT;
};
// Construct an ASE parser and parse the file
ASE::Parser parser(mBuffer,defaultFormat);
mParser = &parser;
mParser->Parse();
//------------------------------------------------------------------
// Check whether we god at least one mesh. If we did - generate
// materials and copy meshes.
// ------------------------------------------------------------------
if ( !mParser->m_vMeshes.empty()) {
// If absolutely no material has been loaded from the file
// we need to generate a default material
GenerateDefaultMaterial();
// process all meshes
bool tookNormals = false;
std::vector<aiMesh*> avOutMeshes;
avOutMeshes.reserve(mParser->m_vMeshes.size()*2);
for (std::vector<ASE::Mesh>::iterator i = mParser->m_vMeshes.begin();i != mParser->m_vMeshes.end();++i) {
if ((*i).bSkip) {
continue;
}
BuildUniqueRepresentation(*i);
// Need to generate proper vertex normals if necessary
if(GenerateNormals(*i)) {
tookNormals = true;
}
// Convert all meshes to aiMesh objects
ConvertMeshes(*i,avOutMeshes);
}
if (tookNormals) {
DefaultLogger::get()->debug("ASE: Taking normals from the file. Use "
"the AI_CONFIG_IMPORT_ASE_RECONSTRUCT_NORMALS setting if you "
"experience problems");
}
// Now build the output mesh list. Remove dummies
pScene->mNumMeshes = (unsigned int)avOutMeshes.size();
aiMesh** pp = pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
for (std::vector<aiMesh*>::const_iterator i = avOutMeshes.begin();i != avOutMeshes.end();++i) {
if (!(*i)->mNumFaces) {
continue;
}
*pp++ = *i;
}
pScene->mNumMeshes = (unsigned int)(pp - pScene->mMeshes);
// Build final material indices (remove submaterials and setup
// the final list)
BuildMaterialIndices();
}
// ------------------------------------------------------------------
// Copy all scene graph nodes - lights, cameras, dummies and meshes
// into one huge list.
//------------------------------------------------------------------
std::vector<BaseNode*> nodes;
nodes.reserve(mParser->m_vMeshes.size() +mParser->m_vLights.size()
+ mParser->m_vCameras.size() + mParser->m_vDummies.size());
// Lights
for (auto &light : mParser->m_vLights)nodes.push_back(&light);
// Cameras
for (auto &camera : mParser->m_vCameras)nodes.push_back(&camera);
// Meshes
for (auto &mesh : mParser->m_vMeshes)nodes.push_back(&mesh);
// Dummies
for (auto &dummy : mParser->m_vDummies)nodes.push_back(&dummy);
// build the final node graph
BuildNodes(nodes);
// build output animations
BuildAnimations(nodes);
// build output cameras
BuildCameras();
// build output lights
BuildLights();
// ------------------------------------------------------------------
// If we have no meshes use the SkeletonMeshBuilder helper class
// to build a mesh for the animation skeleton
// FIXME: very strange results
// ------------------------------------------------------------------
if (!pScene->mNumMeshes) {
pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
if (!noSkeletonMesh) {
SkeletonMeshBuilder skeleton(pScene);
}
}
}
// ------------------------------------------------------------------------------------------------
void ASEImporter::GenerateDefaultMaterial()
{
ai_assert(NULL != mParser);
bool bHas = false;
for (std::vector<ASE::Mesh>::iterator i = mParser->m_vMeshes.begin();i != mParser->m_vMeshes.end();++i) {
if ((*i).bSkip)continue;
if (ASE::Face::DEFAULT_MATINDEX == (*i).iMaterialIndex) {
(*i).iMaterialIndex = (unsigned int)mParser->m_vMaterials.size();
bHas = true;
}
}
if (bHas || mParser->m_vMaterials.empty()) {
// add a simple material without submaterials to the parser's list
mParser->m_vMaterials.push_back ( ASE::Material(AI_DEFAULT_MATERIAL_NAME) );
ASE::Material& mat = mParser->m_vMaterials.back();
mat.mDiffuse = aiColor3D(0.6f,0.6f,0.6f);
mat.mSpecular = aiColor3D(1.0f,1.0f,1.0f);
mat.mAmbient = aiColor3D(0.05f,0.05f,0.05f);
mat.mShading = Discreet3DS::Gouraud;
}
}
// ------------------------------------------------------------------------------------------------
void ASEImporter::BuildAnimations(const std::vector<BaseNode*>& nodes)
{
// check whether we have at least one mesh which has animations
std::vector<ASE::BaseNode*>::const_iterator i = nodes.begin();
unsigned int iNum = 0;
for (;i != nodes.end();++i) {
// TODO: Implement Bezier & TCB support
if ((*i)->mAnim.mPositionType != ASE::Animation::TRACK) {
DefaultLogger::get()->warn("ASE: Position controller uses Bezier/TCB keys. "
"This is not supported.");
}
if ((*i)->mAnim.mRotationType != ASE::Animation::TRACK) {
DefaultLogger::get()->warn("ASE: Rotation controller uses Bezier/TCB keys. "
"This is not supported.");
}
if ((*i)->mAnim.mScalingType != ASE::Animation::TRACK) {
DefaultLogger::get()->warn("ASE: Position controller uses Bezier/TCB keys. "
"This is not supported.");
}
// We compare against 1 here - firstly one key is not
// really an animation and secondly MAX writes dummies
// that represent the node transformation.
if ((*i)->mAnim.akeyPositions.size()>1 || (*i)->mAnim.akeyRotations.size()>1 || (*i)->mAnim.akeyScaling.size()>1){
++iNum;
}
if ((*i)->mTargetAnim.akeyPositions.size() > 1 && is_not_qnan( (*i)->mTargetPosition.x )) {
++iNum;
}
}
if (iNum) {
// Generate a new animation channel and setup everything for it
pcScene->mNumAnimations = 1;
pcScene->mAnimations = new aiAnimation*[1];
aiAnimation* pcAnim = pcScene->mAnimations[0] = new aiAnimation();
pcAnim->mNumChannels = iNum;
pcAnim->mChannels = new aiNodeAnim*[iNum];
pcAnim->mTicksPerSecond = mParser->iFrameSpeed * mParser->iTicksPerFrame;
iNum = 0;
// Now iterate through all meshes and collect all data we can find
for (i = nodes.begin();i != nodes.end();++i) {
ASE::BaseNode* me = *i;
if ( me->mTargetAnim.akeyPositions.size() > 1 && is_not_qnan( me->mTargetPosition.x )) {
// Generate an extra channel for the camera/light target.
// BuildNodes() does also generate an extra node, named
// <baseName>.Target.
aiNodeAnim* nd = pcAnim->mChannels[iNum++] = new aiNodeAnim();
nd->mNodeName.Set(me->mName + ".Target");
// If there is no input position channel we will need
// to supply the default position from the node's
// local transformation matrix.
/*TargetAnimationHelper helper;
if (me->mAnim.akeyPositions.empty())
{
aiMatrix4x4& mat = (*i)->mTransform;
helper.SetFixedMainAnimationChannel(aiVector3D(
mat.a4, mat.b4, mat.c4));
}
else helper.SetMainAnimationChannel (&me->mAnim.akeyPositions);
helper.SetTargetAnimationChannel (&me->mTargetAnim.akeyPositions);
helper.Process(&me->mTargetAnim.akeyPositions);*/
// Allocate the key array and fill it
nd->mNumPositionKeys = (unsigned int) me->mTargetAnim.akeyPositions.size();
nd->mPositionKeys = new aiVectorKey[nd->mNumPositionKeys];
::memcpy(nd->mPositionKeys,&me->mTargetAnim.akeyPositions[0],
nd->mNumPositionKeys * sizeof(aiVectorKey));
}
if (me->mAnim.akeyPositions.size() > 1 || me->mAnim.akeyRotations.size() > 1 || me->mAnim.akeyScaling.size() > 1) {
// Begin a new node animation channel for this node
aiNodeAnim* nd = pcAnim->mChannels[iNum++] = new aiNodeAnim();
nd->mNodeName.Set(me->mName);
// copy position keys
if (me->mAnim.akeyPositions.size() > 1 )
{
// Allocate the key array and fill it
nd->mNumPositionKeys = (unsigned int) me->mAnim.akeyPositions.size();
nd->mPositionKeys = new aiVectorKey[nd->mNumPositionKeys];
::memcpy(nd->mPositionKeys,&me->mAnim.akeyPositions[0],
nd->mNumPositionKeys * sizeof(aiVectorKey));
}
// copy rotation keys
if (me->mAnim.akeyRotations.size() > 1 ) {
// Allocate the key array and fill it
nd->mNumRotationKeys = (unsigned int) me->mAnim.akeyRotations.size();
nd->mRotationKeys = new aiQuatKey[nd->mNumRotationKeys];
// --------------------------------------------------------------------
// Rotation keys are offsets to the previous keys.
// We have the quaternion representations of all
// of them, so we just need to concatenate all
// (unit-length) quaternions to get the absolute
// rotations.
// Rotation keys are ABSOLUTE for older files
// --------------------------------------------------------------------
aiQuaternion cur;
for (unsigned int a = 0; a < nd->mNumRotationKeys;++a) {
aiQuatKey q = me->mAnim.akeyRotations[a];
if (mParser->iFileFormat > 110) {
cur = (a ? cur*q.mValue : q.mValue);
q.mValue = cur.Normalize();
}
nd->mRotationKeys[a] = q;
// need this to get to Assimp quaternion conventions
nd->mRotationKeys[a].mValue.w *= -1.f;
}
}
// copy scaling keys
if (me->mAnim.akeyScaling.size() > 1 ) {
// Allocate the key array and fill it
nd->mNumScalingKeys = (unsigned int) me->mAnim.akeyScaling.size();
nd->mScalingKeys = new aiVectorKey[nd->mNumScalingKeys];
::memcpy(nd->mScalingKeys,&me->mAnim.akeyScaling[0],
nd->mNumScalingKeys * sizeof(aiVectorKey));
}
}
}
}
}
// ------------------------------------------------------------------------------------------------
// Build output cameras
void ASEImporter::BuildCameras()
{
if (!mParser->m_vCameras.empty()) {
pcScene->mNumCameras = (unsigned int)mParser->m_vCameras.size();
pcScene->mCameras = new aiCamera*[pcScene->mNumCameras];
for (unsigned int i = 0; i < pcScene->mNumCameras;++i) {
aiCamera* out = pcScene->mCameras[i] = new aiCamera();
ASE::Camera& in = mParser->m_vCameras[i];
// copy members
out->mClipPlaneFar = in.mFar;
out->mClipPlaneNear = (in.mNear ? in.mNear : 0.1f);
out->mHorizontalFOV = in.mFOV;
out->mName.Set(in.mName);
}
}
}
// ------------------------------------------------------------------------------------------------
// Build output lights
void ASEImporter::BuildLights()
{
if (!mParser->m_vLights.empty()) {
pcScene->mNumLights = (unsigned int)mParser->m_vLights.size();
pcScene->mLights = new aiLight*[pcScene->mNumLights];
for (unsigned int i = 0; i < pcScene->mNumLights;++i) {
aiLight* out = pcScene->mLights[i] = new aiLight();
ASE::Light& in = mParser->m_vLights[i];
// The direction is encoded in the transformation matrix of the node.
// In 3DS MAX the light source points into negative Z direction if
// the node transformation is the identity.
out->mDirection = aiVector3D(0.f,0.f,-1.f);
out->mName.Set(in.mName);
switch (in.mLightType)
{
case ASE::Light::TARGET:
out->mType = aiLightSource_SPOT;
out->mAngleInnerCone = AI_DEG_TO_RAD(in.mAngle);
out->mAngleOuterCone = (in.mFalloff ? AI_DEG_TO_RAD(in.mFalloff) : out->mAngleInnerCone);
break;
case ASE::Light::DIRECTIONAL:
out->mType = aiLightSource_DIRECTIONAL;
break;
default:
//case ASE::Light::OMNI:
out->mType = aiLightSource_POINT;
break;
};
out->mColorDiffuse = out->mColorSpecular = in.mColor * in.mIntensity;
}
}
}
// ------------------------------------------------------------------------------------------------
void ASEImporter::AddNodes(const std::vector<BaseNode*>& nodes,
aiNode* pcParent,const char* szName)
{
aiMatrix4x4 m;
AddNodes(nodes,pcParent,szName,m);
}
// ------------------------------------------------------------------------------------------------
// Add meshes to a given node
void ASEImporter::AddMeshes(const ASE::BaseNode* snode,aiNode* node)
{
for (unsigned int i = 0; i < pcScene->mNumMeshes;++i) {
// Get the name of the mesh (the mesh instance has been temporarily stored in the third vertex color)
const aiMesh* pcMesh = pcScene->mMeshes[i];
const ASE::Mesh* mesh = (const ASE::Mesh*)pcMesh->mColors[2];
if (mesh == snode) {
++node->mNumMeshes;
}
}
if(node->mNumMeshes) {
node->mMeshes = new unsigned int[node->mNumMeshes];
for (unsigned int i = 0, p = 0; i < pcScene->mNumMeshes;++i) {
const aiMesh* pcMesh = pcScene->mMeshes[i];
const ASE::Mesh* mesh = (const ASE::Mesh*)pcMesh->mColors[2];
if (mesh == snode) {
node->mMeshes[p++] = i;
// Transform all vertices of the mesh back into their local space ->
// at the moment they are pretransformed
aiMatrix4x4 m = mesh->mTransform;
m.Inverse();
aiVector3D* pvCurPtr = pcMesh->mVertices;
const aiVector3D* pvEndPtr = pvCurPtr + pcMesh->mNumVertices;
while (pvCurPtr != pvEndPtr) {
*pvCurPtr = m * (*pvCurPtr);
pvCurPtr++;
}
// Do the same for the normal vectors, if we have them.
// As always, inverse transpose.
if (pcMesh->mNormals) {
aiMatrix3x3 m3 = aiMatrix3x3( mesh->mTransform );
m3.Transpose();
pvCurPtr = pcMesh->mNormals;
pvEndPtr = pvCurPtr + pcMesh->mNumVertices;
while (pvCurPtr != pvEndPtr) {
*pvCurPtr = m3 * (*pvCurPtr);
pvCurPtr++;
}
}
}
}
}
}
// ------------------------------------------------------------------------------------------------
// Add child nodes to a given parent node
void ASEImporter::AddNodes (const std::vector<BaseNode*>& nodes,
aiNode* pcParent, const char* szName,
const aiMatrix4x4& mat)
{
const size_t len = szName ? ::strlen(szName) : 0;
ai_assert(4 <= AI_MAX_NUMBER_OF_COLOR_SETS);
// Receives child nodes for the pcParent node
std::vector<aiNode*> apcNodes;
// Now iterate through all nodes in the scene and search for one
// which has *us* as parent.
for (std::vector<BaseNode*>::const_iterator it = nodes.begin(), end = nodes.end(); it != end; ++it) {
const BaseNode* snode = *it;
if (szName) {
if (len != snode->mParent.length() || ::strcmp(szName,snode->mParent.c_str()))
continue;
}
else if (snode->mParent.length())
continue;
(*it)->mProcessed = true;
// Allocate a new node and add it to the output data structure
apcNodes.push_back(new aiNode());
aiNode* node = apcNodes.back();
node->mName.Set((snode->mName.length() ? snode->mName.c_str() : "Unnamed_Node"));
node->mParent = pcParent;
// Setup the transformation matrix of the node
aiMatrix4x4 mParentAdjust = mat;
mParentAdjust.Inverse();
node->mTransformation = mParentAdjust*snode->mTransform;
// Add sub nodes - prevent stack overflow due to recursive parenting
if (node->mName != node->mParent->mName && node->mName != node->mParent->mParent->mName ) {
AddNodes(nodes,node,node->mName.data,snode->mTransform);
}
// Further processing depends on the type of the node
if (snode->mType == ASE::BaseNode::Mesh) {
// If the type of this node is "Mesh" we need to search
// the list of output meshes in the data structure for
// all those that belonged to this node once. This is
// slightly inconvinient here and a better solution should
// be used when this code is refactored next.
AddMeshes(snode,node);
}
else if (is_not_qnan( snode->mTargetPosition.x )) {
// If this is a target camera or light we generate a small
// child node which marks the position of the camera
// target (the direction information is contained in *this*
// node's animation track but the exact target position
// would be lost otherwise)
if (!node->mNumChildren) {
node->mChildren = new aiNode*[1];
}
aiNode* nd = new aiNode();
nd->mName.Set ( snode->mName + ".Target" );
nd->mTransformation.a4 = snode->mTargetPosition.x - snode->mTransform.a4;
nd->mTransformation.b4 = snode->mTargetPosition.y - snode->mTransform.b4;
nd->mTransformation.c4 = snode->mTargetPosition.z - snode->mTransform.c4;
nd->mParent = node;
// The .Target node is always the first child node
for (unsigned int m = 0; m < node->mNumChildren;++m)
node->mChildren[m+1] = node->mChildren[m];
node->mChildren[0] = nd;
node->mNumChildren++;
// What we did is so great, it is at least worth a debug message
DefaultLogger::get()->debug("ASE: Generating separate target node ("+snode->mName+")");
}
}
// Allocate enough space for the child nodes
// We allocate one slot more in case this is a target camera/light
pcParent->mNumChildren = (unsigned int)apcNodes.size();
if (pcParent->mNumChildren) {
pcParent->mChildren = new aiNode*[apcNodes.size()+1 /* PLUS ONE !!! */];
// now build all nodes for our nice new children
for (unsigned int p = 0; p < apcNodes.size();++p)
pcParent->mChildren[p] = apcNodes[p];
}
return;
}
// ------------------------------------------------------------------------------------------------
// Build the output node graph
void ASEImporter::BuildNodes(std::vector<BaseNode*>& nodes) {
ai_assert(NULL != pcScene);
// allocate the one and only root node
aiNode* root = pcScene->mRootNode = new aiNode();
root->mName.Set("<ASERoot>");
// Setup the coordinate system transformation
pcScene->mRootNode->mNumChildren = 1;
pcScene->mRootNode->mChildren = new aiNode*[1];
aiNode* ch = pcScene->mRootNode->mChildren[0] = new aiNode();
ch->mParent = root;
// Change the transformation matrix of all nodes
for (BaseNode *node : nodes) {
aiMatrix4x4& m = node->mTransform;
m.Transpose(); // row-order vs column-order
}
// add all nodes
AddNodes(nodes,ch,NULL);
// now iterate through al nodes and find those that have not yet
// been added to the nodegraph (= their parent could not be recognized)
std::vector<const BaseNode*> aiList;
for (std::vector<BaseNode*>::iterator it = nodes.begin(), end = nodes.end();it != end; ++it) {
if ((*it)->mProcessed) {
continue;
}
// check whether our parent is known
bool bKnowParent = false;
// search the list another time, starting *here* and try to find out whether
// there is a node that references *us* as a parent
for (std::vector<BaseNode*>::const_iterator it2 = nodes.begin();it2 != end; ++it2) {
if (it2 == it) {
continue;
}
if ((*it2)->mName == (*it)->mParent) {
bKnowParent = true;
break;
}
}
if (!bKnowParent) {
aiList.push_back(*it);
}
}
// Are there ane orphaned nodes?
if (!aiList.empty()) {
std::vector<aiNode*> apcNodes;
apcNodes.reserve(aiList.size() + pcScene->mRootNode->mNumChildren);
for (unsigned int i = 0; i < pcScene->mRootNode->mNumChildren;++i)
apcNodes.push_back(pcScene->mRootNode->mChildren[i]);
delete[] pcScene->mRootNode->mChildren;
for (std::vector<const BaseNode*>::/*const_*/iterator i = aiList.begin();i != aiList.end();++i) {
const ASE::BaseNode* src = *i;
// The parent is not known, so we can assume that we must add
// this node to the root node of the whole scene
aiNode* pcNode = new aiNode();
pcNode->mParent = pcScene->mRootNode;
pcNode->mName.Set(src->mName);
AddMeshes(src,pcNode);
AddNodes(nodes,pcNode,pcNode->mName.data);
apcNodes.push_back(pcNode);
}
// Regenerate our output array
pcScene->mRootNode->mChildren = new aiNode*[apcNodes.size()];
for (unsigned int i = 0; i < apcNodes.size();++i)
pcScene->mRootNode->mChildren[i] = apcNodes[i];
pcScene->mRootNode->mNumChildren = (unsigned int)apcNodes.size();
}
// Reset the third color set to NULL - we used this field to store a temporary pointer
for (unsigned int i = 0; i < pcScene->mNumMeshes;++i)
pcScene->mMeshes[i]->mColors[2] = NULL;
// The root node should not have at least one child or the file is valid
if (!pcScene->mRootNode->mNumChildren) {
throw DeadlyImportError("ASE: No nodes loaded. The file is either empty or corrupt");
}
// Now rotate the whole scene 90 degrees around the x axis to convert to internal coordinate system
pcScene->mRootNode->mTransformation = aiMatrix4x4(1.f,0.f,0.f,0.f,
0.f,0.f,1.f,0.f,0.f,-1.f,0.f,0.f,0.f,0.f,0.f,1.f);
}
// ------------------------------------------------------------------------------------------------
// Convert the imported data to the internal verbose representation
void ASEImporter::BuildUniqueRepresentation(ASE::Mesh& mesh) {
// allocate output storage
std::vector<aiVector3D> mPositions;
std::vector<aiVector3D> amTexCoords[AI_MAX_NUMBER_OF_TEXTURECOORDS];
std::vector<aiColor4D> mVertexColors;
std::vector<aiVector3D> mNormals;
std::vector<BoneVertex> mBoneVertices;
unsigned int iSize = (unsigned int)mesh.mFaces.size() * 3;
mPositions.resize(iSize);
// optional texture coordinates
for (unsigned int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS;++i) {
if (!mesh.amTexCoords[i].empty()) {
amTexCoords[i].resize(iSize);
}
}
// optional vertex colors
if (!mesh.mVertexColors.empty()) {
mVertexColors.resize(iSize);
}
// optional vertex normals (vertex normals can simply be copied)
if (!mesh.mNormals.empty()) {
mNormals.resize(iSize);
}
// bone vertices. There is no need to change the bone list
if (!mesh.mBoneVertices.empty()) {
mBoneVertices.resize(iSize);
}
// iterate through all faces in the mesh
unsigned int iCurrent = 0, fi = 0;
for (std::vector<ASE::Face>::iterator i = mesh.mFaces.begin();i != mesh.mFaces.end();++i,++fi) {
for (unsigned int n = 0; n < 3;++n,++iCurrent)
{
mPositions[iCurrent] = mesh.mPositions[(*i).mIndices[n]];
// add texture coordinates
for (unsigned int c = 0; c < AI_MAX_NUMBER_OF_TEXTURECOORDS;++c) {
if (mesh.amTexCoords[c].empty())break;
amTexCoords[c][iCurrent] = mesh.amTexCoords[c][(*i).amUVIndices[c][n]];
}
// add vertex colors
if (!mesh.mVertexColors.empty()) {
mVertexColors[iCurrent] = mesh.mVertexColors[(*i).mColorIndices[n]];
}
// add normal vectors
if (!mesh.mNormals.empty()) {
mNormals[iCurrent] = mesh.mNormals[fi*3+n];
mNormals[iCurrent].Normalize();
}
// handle bone vertices
if ((*i).mIndices[n] < mesh.mBoneVertices.size()) {
// (sometimes this will cause bone verts to be duplicated
// however, I' quite sure Schrompf' JoinVerticesStep
// will fix that again ...)
mBoneVertices[iCurrent] = mesh.mBoneVertices[(*i).mIndices[n]];
}
(*i).mIndices[n] = iCurrent;
}
}
// replace the old arrays
mesh.mNormals = mNormals;
mesh.mPositions = mPositions;
mesh.mVertexColors = mVertexColors;
for (unsigned int c = 0; c < AI_MAX_NUMBER_OF_TEXTURECOORDS;++c)
mesh.amTexCoords[c] = amTexCoords[c];
}
// ------------------------------------------------------------------------------------------------
// Copy a texture from the ASE structs to the output material
void CopyASETexture(aiMaterial& mat, ASE::Texture& texture, aiTextureType type)
{
// Setup the texture name
aiString tex;
tex.Set( texture.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE(type,0));
// Setup the texture blend factor
if (is_not_qnan(texture.mTextureBlend))
mat.AddProperty<ai_real>( &texture.mTextureBlend, 1, AI_MATKEY_TEXBLEND(type,0));
// Setup texture UV transformations
mat.AddProperty<ai_real>(&texture.mOffsetU,5,AI_MATKEY_UVTRANSFORM(type,0));
}
// ------------------------------------------------------------------------------------------------
// Convert from ASE material to output material
void ASEImporter::ConvertMaterial(ASE::Material& mat)
{
// LARGE TODO: Much code her is copied from 3DS ... join them maybe?
// Allocate the output material
mat.pcInstance = new aiMaterial();
// At first add the base ambient color of the
// scene to the material
mat.mAmbient.r += mParser->m_clrAmbient.r;
mat.mAmbient.g += mParser->m_clrAmbient.g;
mat.mAmbient.b += mParser->m_clrAmbient.b;
aiString name;
name.Set( mat.mName);
mat.pcInstance->AddProperty( &name, AI_MATKEY_NAME);
// material colors
mat.pcInstance->AddProperty( &mat.mAmbient, 1, AI_MATKEY_COLOR_AMBIENT);
mat.pcInstance->AddProperty( &mat.mDiffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
mat.pcInstance->AddProperty( &mat.mSpecular, 1, AI_MATKEY_COLOR_SPECULAR);
mat.pcInstance->AddProperty( &mat.mEmissive, 1, AI_MATKEY_COLOR_EMISSIVE);
// shininess
if (0.0f != mat.mSpecularExponent && 0.0f != mat.mShininessStrength)
{
mat.pcInstance->AddProperty( &mat.mSpecularExponent, 1, AI_MATKEY_SHININESS);
mat.pcInstance->AddProperty( &mat.mShininessStrength, 1, AI_MATKEY_SHININESS_STRENGTH);
}
// If there is no shininess, we can disable phong lighting
else if (D3DS::Discreet3DS::Metal == mat.mShading ||
D3DS::Discreet3DS::Phong == mat.mShading ||
D3DS::Discreet3DS::Blinn == mat.mShading)
{
mat.mShading = D3DS::Discreet3DS::Gouraud;
}
// opacity
mat.pcInstance->AddProperty<ai_real>( &mat.mTransparency,1,AI_MATKEY_OPACITY);
// Two sided rendering?
if (mat.mTwoSided)
{
int i = 1;
mat.pcInstance->AddProperty<int>(&i,1,AI_MATKEY_TWOSIDED);
}
// shading mode
aiShadingMode eShading = aiShadingMode_NoShading;
switch (mat.mShading)
{
case D3DS::Discreet3DS::Flat:
eShading = aiShadingMode_Flat; break;
case D3DS::Discreet3DS::Phong :
eShading = aiShadingMode_Phong; break;
case D3DS::Discreet3DS::Blinn :
eShading = aiShadingMode_Blinn; break;
// I don't know what "Wire" shading should be,
// assume it is simple lambertian diffuse (L dot N) shading
case D3DS::Discreet3DS::Wire:
{
// set the wireframe flag
unsigned int iWire = 1;
mat.pcInstance->AddProperty<int>( (int*)&iWire,1,AI_MATKEY_ENABLE_WIREFRAME);
}
case D3DS::Discreet3DS::Gouraud:
eShading = aiShadingMode_Gouraud; break;
case D3DS::Discreet3DS::Metal :
eShading = aiShadingMode_CookTorrance; break;
}
mat.pcInstance->AddProperty<int>( (int*)&eShading,1,AI_MATKEY_SHADING_MODEL);
// DIFFUSE texture
if( mat.sTexDiffuse.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexDiffuse, aiTextureType_DIFFUSE);
// SPECULAR texture
if( mat.sTexSpecular.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexSpecular, aiTextureType_SPECULAR);
// AMBIENT texture
if( mat.sTexAmbient.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexAmbient, aiTextureType_AMBIENT);
// OPACITY texture
if( mat.sTexOpacity.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexOpacity, aiTextureType_OPACITY);
// EMISSIVE texture
if( mat.sTexEmissive.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexEmissive, aiTextureType_EMISSIVE);
// BUMP texture
if( mat.sTexBump.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexBump, aiTextureType_HEIGHT);
// SHININESS texture
if( mat.sTexShininess.mMapName.length() > 0)
CopyASETexture(*mat.pcInstance,mat.sTexShininess, aiTextureType_SHININESS);
// store the name of the material itself, too
if( mat.mName.length() > 0) {
aiString tex;tex.Set( mat.mName);
mat.pcInstance->AddProperty( &tex, AI_MATKEY_NAME);
}
return;
}
// ------------------------------------------------------------------------------------------------
// Build output meshes
void ASEImporter::ConvertMeshes(ASE::Mesh& mesh, std::vector<aiMesh*>& avOutMeshes)
{
// validate the material index of the mesh
if (mesh.iMaterialIndex >= mParser->m_vMaterials.size()) {
mesh.iMaterialIndex = (unsigned int)mParser->m_vMaterials.size()-1;
DefaultLogger::get()->warn("Material index is out of range");
}
// If the material the mesh is assigned to is consisting of submeshes, split it
if (!mParser->m_vMaterials[mesh.iMaterialIndex].avSubMaterials.empty()) {
std::vector<ASE::Material> vSubMaterials = mParser->
m_vMaterials[mesh.iMaterialIndex].avSubMaterials;
std::vector<unsigned int>* aiSplit = new std::vector<unsigned int>[vSubMaterials.size()];
// build a list of all faces per submaterial
for (unsigned int i = 0; i < mesh.mFaces.size();++i) {
// check range
if (mesh.mFaces[i].iMaterial >= vSubMaterials.size()) {
DefaultLogger::get()->warn("Submaterial index is out of range");
// use the last material instead
aiSplit[vSubMaterials.size()-1].push_back(i);
}
else aiSplit[mesh.mFaces[i].iMaterial].push_back(i);
}
// now generate submeshes
for (unsigned int p = 0; p < vSubMaterials.size();++p) {
if (!aiSplit[p].empty()) {
aiMesh* p_pcOut = new aiMesh();
p_pcOut->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
// let the sub material index
p_pcOut->mMaterialIndex = p;
// we will need this material
mParser->m_vMaterials[mesh.iMaterialIndex].avSubMaterials[p].bNeed = true;
// store the real index here ... color channel 3
p_pcOut->mColors[3] = (aiColor4D*)(uintptr_t)mesh.iMaterialIndex;
// store a pointer to the mesh in color channel 2
p_pcOut->mColors[2] = (aiColor4D*) &mesh;
avOutMeshes.push_back(p_pcOut);
// convert vertices
p_pcOut->mNumVertices = (unsigned int)aiSplit[p].size()*3;
p_pcOut->mNumFaces = (unsigned int)aiSplit[p].size();
// receive output vertex weights
std::vector<std::pair<unsigned int, float> > *avOutputBones = NULL;
if (!mesh.mBones.empty()) {
avOutputBones = new std::vector<std::pair<unsigned int, float> >[mesh.mBones.size()];
}