/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

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* Redistributions in binary form must reproduce the above
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*/
/// \file   X3DImporter_Rendering.cpp
/// \brief  Parsing data from nodes of "Rendering" set of X3D.
/// \date   2015-2016
/// \author smal.root@gmail.com

#ifndef ASSIMP_BUILD_NO_X3D_IMPORTER

#include "X3DImporter.hpp"
#include "X3DImporter_Macro.hpp"

namespace Assimp
{

// <Color
// DEF=""           ID
// USE=""           IDREF
// color="" MFColor [inputOutput]
// />
void X3DImporter::ParseNode_Rendering_Color()
{
    std::string use, def;
    std::list<aiColor3D> color;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("color", color, XML_ReadNode_GetAttrVal_AsListCol3f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Color, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Color(NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		((CX3DImporter_NodeElement_Color*)ne)->Value = color;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Color");
		else
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <ColorRGBA
// DEF=""               ID
// USE=""               IDREF
// color="" MFColorRGBA [inputOutput]
// />
void X3DImporter::ParseNode_Rendering_ColorRGBA()
{
    std::string use, def;
    std::list<aiColor4D> color;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("color", color, XML_ReadNode_GetAttrVal_AsListCol4f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_ColorRGBA, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_ColorRGBA(NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		((CX3DImporter_NodeElement_ColorRGBA*)ne)->Value = color;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "ColorRGBA");
		else
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <Coordinate
// DEF=""      ID
// USE=""      IDREF
// point=""    MFVec3f [inputOutput]
// />
void X3DImporter::ParseNode_Rendering_Coordinate()
{
    std::string use, def;
    std::list<aiVector3D> point;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("point", point, XML_ReadNode_GetAttrVal_AsListVec3f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Coordinate, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Coordinate(NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		((CX3DImporter_NodeElement_Coordinate*)ne)->Value = point;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Coordinate");
		else
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <IndexedLineSet
// DEF=""                ID
// USE=""                IDREF
// colorIndex=""         MFInt32 [initializeOnly]
// colorPerVertex="true" SFBool  [initializeOnly]
// coordIndex=""         MFInt32 [initializeOnly]
// >
//    <!-- ColorCoordinateContentModel -->
// ColorCoordinateContentModel is the child-node content model corresponding to IndexedLineSet, LineSet and PointSet. ColorCoordinateContentModel can
// contain any-order Coordinate node with Color (or ColorRGBA) node. No more than one instance of any single node type is allowed.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </IndexedLineSet>
void X3DImporter::ParseNode_Rendering_IndexedLineSet()
{
    std::string use, def;
    std::vector<int32_t> colorIndex;
    bool colorPerVertex = true;
    std::vector<int32_t> coordIndex;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("colorIndex", colorIndex, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("coordIndex", coordIndex, XML_ReadNode_GetAttrVal_AsArrI32);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_IndexedLineSet, ne);
	}
	else
	{
		// check data
		if((coordIndex.size() < 2) || ((coordIndex.back() == (-1)) && (coordIndex.size() < 3)))
			throw DeadlyImportError("IndexedLineSet must contain not empty \"coordIndex\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_IndexedLineSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_IndexedSet& ne_alias = *((CX3DImporter_NodeElement_IndexedSet*)ne);

		ne_alias.ColorIndex = colorIndex;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.CoordIndex = coordIndex;
        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("IndexedLineSet");
				// check for Color and Coordinate nodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("IndexedLineSet");

			MACRO_NODECHECK_LOOPEND("IndexedLineSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <IndexedTriangleFanSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// index=""               MFInt32 [initializeOnly]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </IndexedTriangleFanSet>
void X3DImporter::ParseNode_Rendering_IndexedTriangleFanSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    std::vector<int32_t> index;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("index", index, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_IndexedTriangleFanSet, ne);
	}
	else
	{
		// check data
		if(index.size() == 0) throw DeadlyImportError("IndexedTriangleFanSet must contain not empty \"index\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_IndexedTriangleFanSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_IndexedSet& ne_alias = *((CX3DImporter_NodeElement_IndexedSet*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;

		ne_alias.CoordIndex.clear();
		int counter = 0;
		int32_t idx[3];
		for(std::vector<int32_t>::const_iterator idx_it = index.begin(); idx_it != index.end(); idx_it++)
		{
			idx[2] = *idx_it;
			if (idx[2] < 0)
			{
				counter = 0;
			}
			else
			{
				if (counter >= 2)
				{
					if(ccw)
					{
						ne_alias.CoordIndex.push_back(idx[0]);
						ne_alias.CoordIndex.push_back(idx[1]);
						ne_alias.CoordIndex.push_back(idx[2]);
					}
					else
					{
						ne_alias.CoordIndex.push_back(idx[0]);
						ne_alias.CoordIndex.push_back(idx[2]);
						ne_alias.CoordIndex.push_back(idx[1]);
					}
					ne_alias.CoordIndex.push_back(-1);
					idx[1] = idx[2];
				}
				else
				{
					idx[counter] = idx[2];
				}
				++counter;
			}
		}// for(std::list<int32_t>::const_iterator idx_it = index.begin(); idx_it != ne_alias.index.end(); idx_it++)

        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("IndexedTriangleFanSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("IndexedTriangleFanSet");

			MACRO_NODECHECK_LOOPEND("IndexedTriangleFanSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <IndexedTriangleSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// index=""               MFInt32 [initializeOnly]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </IndexedTriangleSet>
void X3DImporter::ParseNode_Rendering_IndexedTriangleSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    std::vector<int32_t> index;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("index", index, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_IndexedTriangleSet, ne);
	}
	else
	{
		// check data
		if(index.size() == 0) throw DeadlyImportError("IndexedTriangleSet must contain not empty \"index\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_IndexedTriangleSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_IndexedSet& ne_alias = *((CX3DImporter_NodeElement_IndexedSet*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;

		ne_alias.CoordIndex.clear();
		int counter = 0;
		int32_t idx[3];
		for(std::vector<int32_t>::const_iterator idx_it = index.begin(); idx_it != index.end(); idx_it++)
		{
			idx[counter++] = *idx_it;
			if (counter > 2)
			{
				counter = 0;
				if(ccw)
				{
					ne_alias.CoordIndex.push_back(idx[0]);
					ne_alias.CoordIndex.push_back(idx[1]);
					ne_alias.CoordIndex.push_back(idx[2]);
				}
				else
				{
					ne_alias.CoordIndex.push_back(idx[0]);
					ne_alias.CoordIndex.push_back(idx[2]);
					ne_alias.CoordIndex.push_back(idx[1]);
				}
				ne_alias.CoordIndex.push_back(-1);
			}
		}// for(std::list<int32_t>::const_iterator idx_it = index.begin(); idx_it != ne_alias.index.end(); idx_it++)

        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("IndexedTriangleSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("IndexedTriangleSet");

			MACRO_NODECHECK_LOOPEND("IndexedTriangleSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <IndexedTriangleStripSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// index=""               MFInt32 [initializeOnly]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </IndexedTriangleStripSet>
void X3DImporter::ParseNode_Rendering_IndexedTriangleStripSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    std::vector<int32_t> index;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("index", index, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_IndexedTriangleStripSet, ne);
	}
	else
	{
		// check data
		if(index.size() == 0) throw DeadlyImportError("IndexedTriangleStripSet must contain not empty \"index\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_IndexedTriangleStripSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_IndexedSet& ne_alias = *((CX3DImporter_NodeElement_IndexedSet*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;

		ne_alias.CoordIndex.clear();
		int counter = 0;
		int32_t idx[3];
		for(std::vector<int32_t>::const_iterator idx_it = index.begin(); idx_it != index.end(); idx_it++)
		{
			idx[2] = *idx_it;
			if (idx[2] < 0)
			{
				counter = 0;
			}
			else
			{
				if (counter >= 2)
				{
					if(ccw)
					{
						ne_alias.CoordIndex.push_back(idx[0]);
						ne_alias.CoordIndex.push_back(idx[1]);
						ne_alias.CoordIndex.push_back(idx[2]);
					}
					else
					{
						ne_alias.CoordIndex.push_back(idx[0]);
						ne_alias.CoordIndex.push_back(idx[2]);
						ne_alias.CoordIndex.push_back(idx[1]);
					}
					ne_alias.CoordIndex.push_back(-1);
				}
				idx[counter & 1] = idx[2];
				++counter;
			}
		}// for(std::list<int32_t>::const_iterator idx_it = index.begin(); idx_it != ne_alias.index.end(); idx_it++)

        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("IndexedTriangleStripSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("IndexedTriangleStripSet");

			MACRO_NODECHECK_LOOPEND("IndexedTriangleStripSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <LineSet
// DEF=""         ID
// USE=""         IDREF
// vertexCount="" MFInt32 [initializeOnly]
// >
//    <!-- ColorCoordinateContentModel -->
// ColorCoordinateContentModel is the child-node content model corresponding to IndexedLineSet, LineSet and PointSet. ColorCoordinateContentModel can
// contain any-order Coordinate node with Color (or ColorRGBA) node. No more than one instance of any single node type is allowed.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </LineSet>
void X3DImporter::ParseNode_Rendering_LineSet()
{
    std::string use, def;
    std::vector<int32_t> vertexCount;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("vertexCount", vertexCount, XML_ReadNode_GetAttrVal_AsArrI32);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_LineSet, ne);
	}
	else
	{
		// check data
		if(vertexCount.size() == 0) throw DeadlyImportError("LineSet must contain not empty \"vertexCount\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Set(CX3DImporter_NodeElement::ENET_LineSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_Set& ne_alias = *((CX3DImporter_NodeElement_Set*)ne);

		ne_alias.VertexCount = vertexCount;
		// create CoordIdx
		size_t coord_num = 0;

		ne_alias.CoordIndex.clear();
		for(std::vector<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); vc_it++)
		{
			if(*vc_it < 2) throw DeadlyImportError("LineSet. vertexCount shall be greater than or equal to two.");

			for(int32_t i = 0; i < *vc_it; i++) ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num++));// add vertices indices

			 ne_alias.CoordIndex.push_back(-1);// add face delimiter.
		}

        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("LineSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("LineSet");

			MACRO_NODECHECK_LOOPEND("LineSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <PointSet
// DEF="" ID
// USE="" IDREF
// >
//    <!-- ColorCoordinateContentModel -->
// ColorCoordinateContentModel is the child-node content model corresponding to IndexedLineSet, LineSet and PointSet. ColorCoordinateContentModel can
// contain any-order Coordinate node with Color (or ColorRGBA) node. No more than one instance of any single node type is allowed.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </PointSet>
void X3DImporter::ParseNode_Rendering_PointSet()
{
    std::string use, def;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_PointSet, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_PointSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("PointSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("PointSet");

			MACRO_NODECHECK_LOOPEND("PointSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <TriangleFanSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// fanCount=""            MFInt32 [inputOutput]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </TriangleFanSet>
void X3DImporter::ParseNode_Rendering_TriangleFanSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    std::vector<int32_t> fanCount;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("fanCount", fanCount, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_TriangleFanSet, ne);
	}
	else
	{
		// check data
		if(fanCount.size() == 0) throw DeadlyImportError("TriangleFanSet must contain not empty \"fanCount\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Set(CX3DImporter_NodeElement::ENET_TriangleFanSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_Set& ne_alias = *((CX3DImporter_NodeElement_Set*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.VertexCount = fanCount;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;
		// create CoordIdx
		size_t coord_num_first, coord_num_prev;

		ne_alias.CoordIndex.clear();
		// assign indices for first triangle
		coord_num_first = 0;
		coord_num_prev = 1;
		for(std::vector<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); vc_it++)
		{
			if(*vc_it < 3) throw DeadlyImportError("TriangleFanSet. fanCount shall be greater than or equal to three.");

			for(int32_t vc = 2; vc < *vc_it; vc++)
			{
				if(ccw)
				{
					// 2 1
					//  0
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_first));// first vertex is a center and always is [0].
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_prev++));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_prev));
				}
				else
				{
					// 1 2
					//  0
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_first));// first vertex is a center and always is [0].
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_prev + 1));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num_prev++));
				}// if(ccw) else

				ne_alias.CoordIndex.push_back(-1);// add face delimiter.
			}// for(int32_t vc = 2; vc < *vc_it; vc++)

			coord_num_prev++;// that index will be center of next fan
			coord_num_first = coord_num_prev++;// forward to next point - second point of fan
		}// for(std::list<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); vc_it++)
        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("TriangleFanSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("TriangleFanSet");

			MACRO_NODECHECK_LOOPEND("TriangleFanSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <TriangleSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </TriangleSet>
void X3DImporter::ParseNode_Rendering_TriangleSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_TriangleSet, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_IndexedSet(CX3DImporter_NodeElement::ENET_TriangleSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_Set& ne_alias = *((CX3DImporter_NodeElement_Set*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;
        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("TriangleSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("TriangleSet");

			MACRO_NODECHECK_LOOPEND("TriangleSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <TriangleStripSet
// DEF=""                 ID
// USE=""                 IDREF
// ccw="true"             SFBool  [initializeOnly]
// colorPerVertex="true"  SFBool  [initializeOnly]
// normalPerVertex="true" SFBool  [initializeOnly]
// solid="true"           SFBool  [initializeOnly]
// stripCount=""          MFInt32 [inputOutput]
// >
//    <!-- ComposedGeometryContentModel -->
// ComposedGeometryContentModel is the child-node content model corresponding to X3DComposedGeometryNodes. It can contain Color (or ColorRGBA), Coordinate,
// Normal and TextureCoordinate, in any order. No more than one instance of these nodes is allowed. Multiple VertexAttribute (FloatVertexAttribute,
// Matrix3VertexAttribute, Matrix4VertexAttribute) nodes can also be contained.
// A ProtoInstance node (with the proper node type) can be substituted for any node in this content model.
// </TriangleStripSet>
void X3DImporter::ParseNode_Rendering_TriangleStripSet()
{
    std::string use, def;
    bool ccw = true;
    bool colorPerVertex = true;
    std::vector<int32_t> stripCount;
    bool normalPerVertex = true;
    bool solid = true;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("ccw", ccw, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("colorPerVertex", colorPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_REF("stripCount", stripCount, XML_ReadNode_GetAttrVal_AsArrI32);
		MACRO_ATTRREAD_CHECK_RET("normalPerVertex", normalPerVertex, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_TriangleStripSet, ne);
	}
	else
	{
		// check data
		if(stripCount.size() == 0) throw DeadlyImportError("TriangleStripSet must contain not empty \"stripCount\" attribute.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Set(CX3DImporter_NodeElement::ENET_TriangleStripSet, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		CX3DImporter_NodeElement_Set& ne_alias = *((CX3DImporter_NodeElement_Set*)ne);

		ne_alias.CCW = ccw;
		ne_alias.ColorPerVertex = colorPerVertex;
		ne_alias.VertexCount = stripCount;
		ne_alias.NormalPerVertex = normalPerVertex;
		ne_alias.Solid = solid;
		// create CoordIdx
		size_t coord_num0, coord_num1, coord_num2;// indices of current triangle
		bool odd_tri;// sequence of current triangle
		size_t coord_num_sb;// index of first point of strip

		ne_alias.CoordIndex.clear();
		coord_num_sb = 0;
		for(std::vector<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); ++vc_it)
		{
			if(*vc_it < 3) throw DeadlyImportError("TriangleStripSet. stripCount shall be greater than or equal to three.");

			// set initial values for first triangle
			coord_num0 = coord_num_sb;
			coord_num1 = coord_num_sb + 1;
			coord_num2 = coord_num_sb + 2;
			odd_tri = true;

			for(int32_t vc = 2; vc < *vc_it; vc++)
			{
				if(ccw)
				{
					// 0 2
					//  1
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num0));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num1));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num2));
				}
				else
				{
					// 0 1
					//  2
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num0));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num2));
					ne_alias.CoordIndex.push_back(static_cast<int32_t>(coord_num1));
				}// if(ccw) else

				ne_alias.CoordIndex.push_back(-1);// add face delimiter.
				// prepare values for next triangle
				if(odd_tri)
				{
					coord_num0 = coord_num2;
					coord_num2++;
				}
				else
				{
					coord_num1 = coord_num2;
					coord_num2 = coord_num1 + 1;
				}

				odd_tri = !odd_tri;
				coord_num_sb = coord_num2;// that index will be start of next strip
			}// for(int32_t vc = 2; vc < *vc_it; vc++)
		}// for(std::list<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); vc_it++)
        // check for child nodes
        if(!mReader->isEmptyElement())
        {
			ParseHelper_Node_Enter(ne);
			MACRO_NODECHECK_LOOPBEGIN("TriangleStripSet");
				// check for X3DComposedGeometryNodes
				if(XML_CheckNode_NameEqual("Color")) { ParseNode_Rendering_Color(); continue; }
				if(XML_CheckNode_NameEqual("ColorRGBA")) { ParseNode_Rendering_ColorRGBA(); continue; }
				if(XML_CheckNode_NameEqual("Coordinate")) { ParseNode_Rendering_Coordinate(); continue; }
				if(XML_CheckNode_NameEqual("Normal")) { ParseNode_Rendering_Normal(); continue; }
				if(XML_CheckNode_NameEqual("TextureCoordinate")) { ParseNode_Texturing_TextureCoordinate(); continue; }
				// check for X3DMetadataObject
				if(!ParseHelper_CheckRead_X3DMetadataObject()) XML_CheckNode_SkipUnsupported("TriangleStripSet");

			MACRO_NODECHECK_LOOPEND("TriangleStripSet");
			ParseHelper_Node_Exit();
		}// if(!mReader->isEmptyElement())
		else
		{
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element
		}

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

// <Normal
// DEF=""      ID
// USE=""      IDREF
// vector=""   MFVec3f [inputOutput]
// />
void X3DImporter::ParseNode_Rendering_Normal()
{
std::string use, def;
std::list<aiVector3D> vector;
CX3DImporter_NodeElement* ne;

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("vector", vector, XML_ReadNode_GetAttrVal_AsListVec3f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Normal, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Normal(NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		((CX3DImporter_NodeElement_Normal*)ne)->Value = vector;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Normal");
		else
			NodeElement_Cur->Child.push_back(ne);// add made object as child to current element

		NodeElement_List.push_back(ne);// add element to node element list because its a new object in graph
	}// if(!use.empty()) else
}

}// namespace Assimp

#endif // !ASSIMP_BUILD_NO_X3D_IMPORTER