Urho3D/Source/ThirdParty/Assimp/code/X3DExporter.cpp

736 lines
24 KiB
C++

/// \file X3DExporter.cpp
/// \brief X3D-format files exporter for Assimp. Implementation.
/// \date 2016
/// \author smal.root@gmail.com
#ifndef ASSIMP_BUILD_NO_EXPORT
#ifndef ASSIMP_BUILD_NO_X3D_EXPORTER
#include "X3DExporter.hpp"
// Header files, Assimp.
#include "Exceptional.h"
#include "StringUtils.h"
#include <assimp/Exporter.hpp>
#include <assimp/IOSystem.hpp>
using namespace std;
namespace Assimp
{
void ExportSceneX3D(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties)
{
X3DExporter exporter(pFile, pIOSystem, pScene, pProperties);
}
}// namespace Assimp
namespace Assimp
{
void X3DExporter::IndentationStringSet(const size_t pNewLevel)
{
if(pNewLevel > mIndentationString.size())
{
if(pNewLevel > mIndentationString.capacity()) mIndentationString.reserve(pNewLevel + 1);
for(size_t i = 0, i_e = pNewLevel - mIndentationString.size(); i < i_e; i++) mIndentationString.push_back('\t');
}
else if(pNewLevel < mIndentationString.size())
{
mIndentationString.resize(pNewLevel);
}
}
void X3DExporter::XML_Write(const string& pData)
{
if(pData.size() == 0) return;
if(mOutFile->Write((void*)pData.data(), pData.length(), 1) != 1) throw DeadlyExportError("Failed to write scene data!");
}
aiMatrix4x4 X3DExporter::Matrix_GlobalToCurrent(const aiNode& pNode) const
{
aiNode* cur_node;
std::list<aiMatrix4x4> matr;
aiMatrix4x4 out_matr;
// starting walk from current element to root
matr.push_back(pNode.mTransformation);
cur_node = pNode.mParent;
if(cur_node != nullptr)
{
do
{
matr.push_back(cur_node->mTransformation);
cur_node = cur_node->mParent;
} while(cur_node != nullptr);
}
// multiplicate all matrices in reverse order
for(std::list<aiMatrix4x4>::reverse_iterator rit = matr.rbegin(); rit != matr.rend(); rit++) out_matr = out_matr * (*rit);
return out_matr;
}
void X3DExporter::AttrHelper_FloatToString(const float pValue, std::string& pTargetString)
{
pTargetString = to_string(pValue);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Vec3DArrToString(const aiVector3D* pArray, const size_t pArray_Size, string& pTargetString)
{
pTargetString.clear();
pTargetString.reserve(pArray_Size * 6);// (Number + space) * 3.
for(size_t idx = 0; idx < pArray_Size; idx++)
pTargetString.append(to_string(pArray[idx].x) + " " + to_string(pArray[idx].y) + " " + to_string(pArray[idx].z) + " ");
// remove last space symbol.
pTargetString.resize(pTargetString.length() - 1);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Vec2DArrToString(const aiVector2D* pArray, const size_t pArray_Size, std::string& pTargetString)
{
pTargetString.clear();
pTargetString.reserve(pArray_Size * 4);// (Number + space) * 2.
for(size_t idx = 0; idx < pArray_Size; idx++)
pTargetString.append(to_string(pArray[idx].x) + " " + to_string(pArray[idx].y) + " ");
// remove last space symbol.
pTargetString.resize(pTargetString.length() - 1);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Vec3DAsVec2fArrToString(const aiVector3D* pArray, const size_t pArray_Size, string& pTargetString)
{
pTargetString.clear();
pTargetString.reserve(pArray_Size * 4);// (Number + space) * 2.
for(size_t idx = 0; idx < pArray_Size; idx++)
pTargetString.append(to_string(pArray[idx].x) + " " + to_string(pArray[idx].y) + " ");
// remove last space symbol.
pTargetString.resize(pTargetString.length() - 1);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Col4DArrToString(const aiColor4D* pArray, const size_t pArray_Size, string& pTargetString)
{
pTargetString.clear();
pTargetString.reserve(pArray_Size * 8);// (Number + space) * 4.
for(size_t idx = 0; idx < pArray_Size; idx++)
pTargetString.append(to_string(pArray[idx].r) + " " + to_string(pArray[idx].g) + " " + to_string(pArray[idx].b) + " " +
to_string(pArray[idx].a) + " ");
// remove last space symbol.
pTargetString.resize(pTargetString.length() - 1);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Col3DArrToString(const aiColor3D* pArray, const size_t pArray_Size, std::string& pTargetString)
{
pTargetString.clear();
pTargetString.reserve(pArray_Size * 6);// (Number + space) * 3.
for(size_t idx = 0; idx < pArray_Size; idx++)
pTargetString.append(to_string(pArray[idx].r) + " " + to_string(pArray[idx].g) + " " + to_string(pArray[idx].b) + " ");
// remove last space symbol.
pTargetString.resize(pTargetString.length() - 1);
AttrHelper_CommaToPoint(pTargetString);
}
void X3DExporter::AttrHelper_Color3ToAttrList(std::list<SAttribute>& pList, const std::string& pName, const aiColor3D& pValue, const aiColor3D& pDefaultValue)
{
string tstr;
if(pValue == pDefaultValue) return;
AttrHelper_Col3DArrToString(&pValue, 1, tstr);
pList.push_back({pName, tstr});
}
void X3DExporter::AttrHelper_FloatToAttrList(std::list<SAttribute>& pList, const string& pName, const float pValue, const float pDefaultValue)
{
string tstr;
if(pValue == pDefaultValue) return;
AttrHelper_FloatToString(pValue, tstr);
pList.push_back({pName, tstr});
}
void X3DExporter::NodeHelper_OpenNode(const string& pNodeName, const size_t pTabLevel, const bool pEmptyElement, const list<SAttribute>& pAttrList)
{
// Write indentation.
IndentationStringSet(pTabLevel);
XML_Write(mIndentationString);
// Begin of the element
XML_Write("<" + pNodeName);
// Write attributes
for(const SAttribute& attr: pAttrList) { XML_Write(" " + attr.Name + "='" + attr.Value + "'"); }
// End of the element
if(pEmptyElement)
{
XML_Write("/>\n");
}
else
{
XML_Write(">\n");
}
}
void X3DExporter::NodeHelper_OpenNode(const string& pNodeName, const size_t pTabLevel, const bool pEmptyElement)
{
const list<SAttribute> attr_list;
NodeHelper_OpenNode(pNodeName, pTabLevel, pEmptyElement, attr_list);
}
void X3DExporter::NodeHelper_CloseNode(const string& pNodeName, const size_t pTabLevel)
{
// Write indentation.
IndentationStringSet(pTabLevel);
XML_Write(mIndentationString);
// Write element
XML_Write("</" + pNodeName + ">\n");
}
void X3DExporter::Export_Node(const aiNode *pNode, const size_t pTabLevel)
{
bool transform = false;
list<SAttribute> attr_list;
// In Assimp lights is stored in next way: light source store in mScene->mLights and in node tree must present aiNode with name same as
// light source has. Considering it we must compare every aiNode name with light sources names. Why not to look where ligths is present
// and save them to fili? Because corresponding aiNode can be already written to file and we can only add information to file not to edit.
if(CheckAndExport_Light(*pNode, pTabLevel)) return;
// Check if need DEF.
if(pNode->mName.length) attr_list.push_back({"DEF", pNode->mName.C_Str()});
// Check if need <Transformation> node against <Group>.
if(!pNode->mTransformation.IsIdentity())
{
auto Vector2String = [this](const aiVector3D pVector) -> string
{
string tstr = to_string(pVector.x) + " " + to_string(pVector.y) + " " + to_string(pVector.z);
AttrHelper_CommaToPoint(tstr);
return tstr;
};
auto Rotation2String = [this](const aiVector3D pAxis, const ai_real pAngle) -> string
{
string tstr = to_string(pAxis.x) + " " + to_string(pAxis.y) + " " + to_string(pAxis.z) + " " + to_string(pAngle);
AttrHelper_CommaToPoint(tstr);
return tstr;
};
aiVector3D scale, translate, rotate_axis;
ai_real rotate_angle;
transform = true;
pNode->mTransformation.Decompose(scale, rotate_axis, rotate_angle, translate);
// Check if values different from default
if((rotate_angle != 0) && (rotate_axis.Length() > 0))
attr_list.push_back({"rotation", Rotation2String(rotate_axis, rotate_angle)});
if(!scale.Equal({1.0,1.0,1.0})) {
attr_list.push_back({"scale", Vector2String(scale)});
}
if(translate.Length() > 0) {
attr_list.push_back({"translation", Vector2String(translate)});
}
}
// Begin node if need.
if(transform)
NodeHelper_OpenNode("Transform", pTabLevel, false, attr_list);
else
NodeHelper_OpenNode("Group", pTabLevel);
// Export metadata
if(pNode->mMetaData != nullptr)
{
for(size_t idx_prop = 0; idx_prop < pNode->mMetaData->mNumProperties; idx_prop++)
{
const aiString* key;
const aiMetadataEntry* entry;
if(pNode->mMetaData->Get(idx_prop, key, entry))
{
switch(entry->mType)
{
case AI_BOOL:
Export_MetadataBoolean(*key, *static_cast<bool*>(entry->mData), pTabLevel + 1);
break;
case AI_DOUBLE:
Export_MetadataDouble(*key, *static_cast<double*>(entry->mData), pTabLevel + 1);
break;
case AI_FLOAT:
Export_MetadataFloat(*key, *static_cast<float*>(entry->mData), pTabLevel + 1);
break;
case AI_INT32:
Export_MetadataInteger(*key, *static_cast<int32_t*>(entry->mData), pTabLevel + 1);
break;
case AI_AISTRING:
Export_MetadataString(*key, *static_cast<aiString*>(entry->mData), pTabLevel + 1);
break;
default:
LogError("Unsupported metadata type: " + to_string(entry->mType));
break;
}// switch(entry->mType)
}
}
}// if(pNode->mMetaData != nullptr)
// Export meshes.
for(size_t idx_mesh = 0; idx_mesh < pNode->mNumMeshes; idx_mesh++) Export_Mesh(pNode->mMeshes[idx_mesh], pTabLevel + 1);
// Export children.
for(size_t idx_node = 0; idx_node < pNode->mNumChildren; idx_node++) Export_Node(pNode->mChildren[idx_node], pTabLevel + 1);
// End node if need.
if(transform)
NodeHelper_CloseNode("Transform", pTabLevel);
else
NodeHelper_CloseNode("Group", pTabLevel);
}
void X3DExporter::Export_Mesh(const size_t pIdxMesh, const size_t pTabLevel)
{
const char* NodeName_IFS = "IndexedFaceSet";
const char* NodeName_Shape = "Shape";
list<SAttribute> attr_list;
aiMesh& mesh = *mScene->mMeshes[pIdxMesh];// create alias for conveniance.
// Check if mesh already defined early.
if(mDEF_Map_Mesh.find(pIdxMesh) != mDEF_Map_Mesh.end())
{
// Mesh already defined, just refer to it
attr_list.push_back({"USE", mDEF_Map_Mesh.at(pIdxMesh)});
NodeHelper_OpenNode(NodeName_Shape, pTabLevel, true, attr_list);
return;
}
string mesh_name(mesh.mName.C_Str() + string("_IDX_") + to_string(pIdxMesh));// Create mesh name
// Define mesh name.
attr_list.push_back({"DEF", mesh_name});
mDEF_Map_Mesh[pIdxMesh] = mesh_name;
//
// "Shape" node.
//
NodeHelper_OpenNode(NodeName_Shape, pTabLevel, false, attr_list);
attr_list.clear();
//
// "Appearance" node.
//
Export_Material(mesh.mMaterialIndex, pTabLevel + 1);
//
// "IndexedFaceSet" node.
//
// Fill attributes which differ from default. In Assimp for colors, vertices and normals used one indices set. So, only "coordIndex" must be set.
string coordIndex;
// fill coordinates index.
coordIndex.reserve(mesh.mNumVertices * 4);// Index + space + Face delimiter
for(size_t idx_face = 0; idx_face < mesh.mNumFaces; idx_face++)
{
const aiFace& face_cur = mesh.mFaces[idx_face];
for(size_t idx_vert = 0; idx_vert < face_cur.mNumIndices; idx_vert++)
{
coordIndex.append(to_string(face_cur.mIndices[idx_vert]) + " ");
}
coordIndex.append("-1 ");// face delimiter.
}
// remove last space symbol.
coordIndex.resize(coordIndex.length() - 1);
attr_list.push_back({"coordIndex", coordIndex});
// create node
NodeHelper_OpenNode(NodeName_IFS, pTabLevel + 1, false, attr_list);
attr_list.clear();
// Child nodes for "IndexedFaceSet" needed when used colors, textures or normals.
string attr_value;
// Export <Coordinate>
AttrHelper_Vec3DArrToString(mesh.mVertices, mesh.mNumVertices, attr_value);
attr_list.push_back({"point", attr_value});
NodeHelper_OpenNode("Coordinate", pTabLevel + 2, true, attr_list);
attr_list.clear();
// Export <ColorRGBA>
if(mesh.HasVertexColors(0))
{
AttrHelper_Col4DArrToString(mesh.mColors[0], mesh.mNumVertices, attr_value);
attr_list.push_back({"color", attr_value});
NodeHelper_OpenNode("ColorRGBA", pTabLevel + 2, true, attr_list);
attr_list.clear();
}
// Export <TextureCoordinate>
if(mesh.HasTextureCoords(0))
{
AttrHelper_Vec3DAsVec2fArrToString(mesh.mTextureCoords[0], mesh.mNumVertices, attr_value);
attr_list.push_back({"point", attr_value});
NodeHelper_OpenNode("TextureCoordinate", pTabLevel + 2, true, attr_list);
attr_list.clear();
}
// Export <Normal>
if(mesh.HasNormals())
{
AttrHelper_Vec3DArrToString(mesh.mNormals, mesh.mNumVertices, attr_value);
attr_list.push_back({"vector", attr_value});
NodeHelper_OpenNode("Normal", pTabLevel + 2, true, attr_list);
attr_list.clear();
}
//
// Close opened nodes.
//
NodeHelper_CloseNode(NodeName_IFS, pTabLevel + 1);
NodeHelper_CloseNode(NodeName_Shape, pTabLevel);
}
void X3DExporter::Export_Material(const size_t pIdxMaterial, const size_t pTabLevel)
{
const char* NodeName_A = "Appearance";
list<SAttribute> attr_list;
aiMaterial& material = *mScene->mMaterials[pIdxMaterial];// create alias for conveniance.
// Check if material already defined early.
if(mDEF_Map_Material.find(pIdxMaterial) != mDEF_Map_Material.end())
{
// Material already defined, just refer to it
attr_list.push_back({"USE", mDEF_Map_Material.at(pIdxMaterial)});
NodeHelper_OpenNode(NodeName_A, pTabLevel, true, attr_list);
return;
}
string material_name(string("_IDX_") + to_string(pIdxMaterial));// Create material name
aiString ai_mat_name;
if(material.Get(AI_MATKEY_NAME, ai_mat_name) == AI_SUCCESS) material_name.insert(0, ai_mat_name.C_Str());
// Define material name.
attr_list.push_back({"DEF", material_name});
mDEF_Map_Material[pIdxMaterial] = material_name;
//
// "Appearance" node.
//
NodeHelper_OpenNode(NodeName_A, pTabLevel, false, attr_list);
attr_list.clear();
//
// "Material" node.
//
{
auto Color4ToAttrList = [&](const string& pAttrName, const aiColor4D& pAttrValue, const aiColor3D& pAttrDefaultValue)
{
string tstr;
if(aiColor3D(pAttrValue.r, pAttrValue.g, pAttrValue.b) != pAttrDefaultValue)
{
AttrHelper_Col4DArrToString(&pAttrValue, 1, tstr);
attr_list.push_back({pAttrName, tstr});
}
};
float tvalf;
aiColor3D color3;
aiColor4D color4;
// ambientIntensity="0.2" SFFloat [inputOutput]
if(material.Get(AI_MATKEY_COLOR_AMBIENT, color3) == AI_SUCCESS)
AttrHelper_FloatToAttrList(attr_list, "ambientIntensity", (color3.r + color3.g + color3.b) / 3.0f, 0.2f);
else if(material.Get(AI_MATKEY_COLOR_AMBIENT, color4) == AI_SUCCESS)
AttrHelper_FloatToAttrList(attr_list, "ambientIntensity", (color4.r + color4.g + color4.b) / 3.0f, 0.2f);
// diffuseColor="0.8 0.8 0.8" SFColor [inputOutput]
if(material.Get(AI_MATKEY_COLOR_DIFFUSE, color3) == AI_SUCCESS)
AttrHelper_Color3ToAttrList(attr_list, "diffuseColor", color3, aiColor3D(0.8f, 0.8f, 0.8f));
else if(material.Get(AI_MATKEY_COLOR_DIFFUSE, color4) == AI_SUCCESS)
Color4ToAttrList("diffuseColor", color4, aiColor3D(0.8f, 0.8f, 0.8f));
// emissiveColor="0 0 0" SFColor [inputOutput]
if(material.Get(AI_MATKEY_COLOR_EMISSIVE, color3) == AI_SUCCESS)
AttrHelper_Color3ToAttrList(attr_list, "emissiveColor", color3, aiColor3D(0, 0, 0));
else if(material.Get(AI_MATKEY_COLOR_EMISSIVE, color4) == AI_SUCCESS)
Color4ToAttrList("emissiveColor", color4, aiColor3D(0, 0, 0));
// shininess="0.2" SFFloat [inputOutput]
if(material.Get(AI_MATKEY_SHININESS, tvalf) == AI_SUCCESS) AttrHelper_FloatToAttrList(attr_list, "shininess", tvalf, 0.2f);
// specularColor="0 0 0" SFColor [inputOutput]
if(material.Get(AI_MATKEY_COLOR_SPECULAR, color3) == AI_SUCCESS)
AttrHelper_Color3ToAttrList(attr_list, "specularColor", color3, aiColor3D(0, 0, 0));
else if(material.Get(AI_MATKEY_COLOR_SPECULAR, color4) == AI_SUCCESS)
Color4ToAttrList("specularColor", color4, aiColor3D(0, 0, 0));
// transparency="0" SFFloat [inputOutput]
if(material.Get(AI_MATKEY_OPACITY, tvalf) == AI_SUCCESS)
{
if(tvalf > 1) tvalf = 1;
tvalf = 1.0f - tvalf;
AttrHelper_FloatToAttrList(attr_list, "transparency", tvalf, 0);
}
NodeHelper_OpenNode("Material", pTabLevel + 1, true, attr_list);
attr_list.clear();
}// "Material" node. END.
//
// "ImageTexture" node.
//
{
auto RepeatToAttrList = [&](const string& pAttrName, const bool pAttrValue)
{
if(!pAttrValue) attr_list.push_back({pAttrName, "false"});
};
bool tvalb;
aiString tstring;
// url="" MFString
if(material.Get(AI_MATKEY_TEXTURE_DIFFUSE(0), tstring) == AI_SUCCESS)
{
if(strncmp(tstring.C_Str(), AI_EMBEDDED_TEXNAME_PREFIX, strlen(AI_EMBEDDED_TEXNAME_PREFIX)) == 0)
LogError("Embedded texture is not supported");
else
attr_list.push_back({"url", string("\"") + tstring.C_Str() + "\""});
}
// repeatS="true" SFBool
if(material.Get(AI_MATKEY_MAPPINGMODE_U_DIFFUSE(0), tvalb) == AI_SUCCESS) RepeatToAttrList("repeatS", tvalb);
// repeatT="true" SFBool
if(material.Get(AI_MATKEY_MAPPINGMODE_V_DIFFUSE(0), tvalb) == AI_SUCCESS) RepeatToAttrList("repeatT", tvalb);
NodeHelper_OpenNode("ImageTexture", pTabLevel + 1, true, attr_list);
attr_list.clear();
}// "ImageTexture" node. END.
//
// "TextureTransform" node.
//
{
auto Vec2ToAttrList = [&](const string& pAttrName, const aiVector2D& pAttrValue, const aiVector2D& pAttrDefaultValue)
{
string tstr;
if(pAttrValue != pAttrDefaultValue)
{
AttrHelper_Vec2DArrToString(&pAttrValue, 1, tstr);
attr_list.push_back({pAttrName, tstr});
}
};
aiUVTransform transform;
if(material.Get(AI_MATKEY_UVTRANSFORM_DIFFUSE(0), transform) == AI_SUCCESS)
{
Vec2ToAttrList("translation", transform.mTranslation, aiVector2D(0, 0));
AttrHelper_FloatToAttrList(attr_list, "rotation", transform.mRotation, 0);
Vec2ToAttrList("scale", transform.mScaling, aiVector2D(1, 1));
NodeHelper_OpenNode("TextureTransform", pTabLevel + 1, true, attr_list);
attr_list.clear();
}
}// "TextureTransform" node. END.
//
// Close opened nodes.
//
NodeHelper_CloseNode(NodeName_A, pTabLevel);
}
void X3DExporter::Export_MetadataBoolean(const aiString& pKey, const bool pValue, const size_t pTabLevel)
{
list<SAttribute> attr_list;
attr_list.push_back({"name", pKey.C_Str()});
attr_list.push_back({"value", pValue ? "true" : "false"});
NodeHelper_OpenNode("MetadataBoolean", pTabLevel, true, attr_list);
}
void X3DExporter::Export_MetadataDouble(const aiString& pKey, const double pValue, const size_t pTabLevel)
{
list<SAttribute> attr_list;
attr_list.push_back({"name", pKey.C_Str()});
attr_list.push_back({"value", to_string(pValue)});
NodeHelper_OpenNode("MetadataDouble", pTabLevel, true, attr_list);
}
void X3DExporter::Export_MetadataFloat(const aiString& pKey, const float pValue, const size_t pTabLevel)
{
list<SAttribute> attr_list;
attr_list.push_back({"name", pKey.C_Str()});
attr_list.push_back({"value", to_string(pValue)});
NodeHelper_OpenNode("MetadataFloat", pTabLevel, true, attr_list);
}
void X3DExporter::Export_MetadataInteger(const aiString& pKey, const int32_t pValue, const size_t pTabLevel)
{
list<SAttribute> attr_list;
attr_list.push_back({"name", pKey.C_Str()});
attr_list.push_back({"value", to_string(pValue)});
NodeHelper_OpenNode("MetadataInteger", pTabLevel, true, attr_list);
}
void X3DExporter::Export_MetadataString(const aiString& pKey, const aiString& pValue, const size_t pTabLevel)
{
list<SAttribute> attr_list;
attr_list.push_back({"name", pKey.C_Str()});
attr_list.push_back({"value", pValue.C_Str()});
NodeHelper_OpenNode("MetadataString", pTabLevel, true, attr_list);
}
bool X3DExporter::CheckAndExport_Light(const aiNode& pNode, const size_t pTabLevel)
{
list<SAttribute> attr_list;
auto Vec3ToAttrList = [&](const string& pAttrName, const aiVector3D& pAttrValue, const aiVector3D& pAttrDefaultValue)
{
string tstr;
if(pAttrValue != pAttrDefaultValue)
{
AttrHelper_Vec3DArrToString(&pAttrValue, 1, tstr);
attr_list.push_back({pAttrName, tstr});
}
};
size_t idx_light;
bool found = false;
// Name of the light source can not be empty.
if(pNode.mName.length == 0) return false;
// search for light with name like node has.
for(idx_light = 0; mScene->mNumLights; idx_light++)
{
if(pNode.mName == mScene->mLights[idx_light]->mName)
{
found = true;
break;
}
}
if(!found) return false;
// Light source is found.
const aiLight& light = *mScene->mLights[idx_light];// Alias for conveniance.
aiMatrix4x4 trafo_mat = Matrix_GlobalToCurrent(pNode).Inverse();
attr_list.push_back({"DEF", light.mName.C_Str()});
attr_list.push_back({"global", "true"});// "false" is not supported.
// ambientIntensity="0" SFFloat [inputOutput]
AttrHelper_FloatToAttrList(attr_list, "ambientIntensity", aiVector3D(light.mColorAmbient.r, light.mColorAmbient.g, light.mColorAmbient.b).Length(), 0);
// color="1 1 1" SFColor [inputOutput]
AttrHelper_Color3ToAttrList(attr_list, "color", light.mColorDiffuse, aiColor3D(1, 1, 1));
switch(light.mType)
{
case aiLightSource_DIRECTIONAL:
{
aiVector3D direction = trafo_mat * light.mDirection;
Vec3ToAttrList("direction", direction, aiVector3D(0, 0, -1));
NodeHelper_OpenNode("DirectionalLight", pTabLevel, true, attr_list);
}
break;
case aiLightSource_POINT:
{
aiVector3D attenuation(light.mAttenuationConstant, light.mAttenuationLinear, light.mAttenuationQuadratic);
aiVector3D location = trafo_mat * light.mPosition;
Vec3ToAttrList("attenuation", attenuation, aiVector3D(1, 0, 0));
Vec3ToAttrList("location", location, aiVector3D(0, 0, 0));
NodeHelper_OpenNode("PointLight", pTabLevel, true, attr_list);
}
break;
case aiLightSource_SPOT:
{
aiVector3D attenuation(light.mAttenuationConstant, light.mAttenuationLinear, light.mAttenuationQuadratic);
aiVector3D location = trafo_mat * light.mPosition;
aiVector3D direction = trafo_mat * light.mDirection;
Vec3ToAttrList("attenuation", attenuation, aiVector3D(1, 0, 0));
Vec3ToAttrList("location", location, aiVector3D(0, 0, 0));
Vec3ToAttrList("direction", direction, aiVector3D(0, 0, -1));
AttrHelper_FloatToAttrList(attr_list, "beamWidth", light.mAngleInnerCone, 0.7854f);
AttrHelper_FloatToAttrList(attr_list, "cutOffAngle", light.mAngleOuterCone, 1.570796f);
NodeHelper_OpenNode("SpotLight", pTabLevel, true, attr_list);
}
break;
default:
throw DeadlyExportError("Unknown light type: " + to_string(light.mType));
}// switch(light.mType)
return true;
}
X3DExporter::X3DExporter(const char* pFileName, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/)
: mScene(pScene)
{
list<SAttribute> attr_list;
mOutFile = pIOSystem->Open(pFileName, "wt");
if(mOutFile == nullptr) throw DeadlyExportError("Could not open output .x3d file: " + string(pFileName));
// Begin document
XML_Write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
XML_Write("<!DOCTYPE X3D PUBLIC \"ISO//Web3D//DTD X3D 3.3//EN\" \"http://www.web3d.org/specifications/x3d-3.3.dtd\">\n");
// Root node
attr_list.push_back({"profile", "Interchange"});
attr_list.push_back({"version", "3.3"});
attr_list.push_back({"xmlns:xsd", "http://www.w3.org/2001/XMLSchema-instance"});
attr_list.push_back({"xsd:noNamespaceSchemaLocation", "http://www.web3d.org/specifications/x3d-3.3.xsd"});
NodeHelper_OpenNode("X3D", 0, false, attr_list);
attr_list.clear();
// <head>: meta data.
NodeHelper_OpenNode("head", 1);
XML_Write(mIndentationString + "<!-- All \"meta\" from this section tou will found in <Scene> node as MetadataString nodes. -->\n");
NodeHelper_CloseNode("head", 1);
// Scene node.
NodeHelper_OpenNode("Scene", 1);
Export_Node(mScene->mRootNode, 2);
NodeHelper_CloseNode("Scene", 1);
// Close Root node.
NodeHelper_CloseNode("X3D", 0);
// Cleanup
pIOSystem->Close(mOutFile);
mOutFile = nullptr;
}
}// namespace Assimp
#endif // ASSIMP_BUILD_NO_X3D_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT