/*
Open Asset Import Library (assimp)
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*/
/// \file   X3DImporter_Geometry2D.cpp
/// \brief  Parsing data from nodes of "Geometry2D" set of X3D.
/// \date   2015-2016
/// \author smal.root@gmail.com

#ifndef ASSIMP_BUILD_NO_X3D_IMPORTER

#include "X3DImporter.hpp"
#include "X3DImporter_Node.hpp"
#include "X3DImporter_Macro.hpp"

namespace Assimp
{

// <Arc2D
// DEF=""              ID
// USE=""              IDREF
// endAngle="1.570796" SFFloat [initializeOnly]
// radius="1"          SFFloat [initializeOnly]
// startAngle="0"      SFFloat [initializeOnly]
// />
// The Arc2D node specifies a linear circular arc whose center is at (0,0) and whose angles are measured starting at the positive x-axis and sweeping
// towards the positive y-axis. The radius field specifies the radius of the circle of which the arc is a portion. The arc extends from the startAngle
// counterclockwise to the endAngle. The values of startAngle and endAngle shall be in the range [-2pi, 2pi] radians (or the equivalent if a different
// angle base unit has been specified). If startAngle and endAngle have the same value, a circle is specified.
void X3DImporter::ParseNode_Geometry2D_Arc2D()
{
    std::string def, use;
    float endAngle = AI_MATH_HALF_PI_F;
    float radius = 1;
    float startAngle = 0;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("endAngle", endAngle, XML_ReadNode_GetAttrVal_AsFloat);
		MACRO_ATTRREAD_CHECK_RET("radius", radius, XML_ReadNode_GetAttrVal_AsFloat);
		MACRO_ATTRREAD_CHECK_RET("startAngle", startAngle, XML_ReadNode_GetAttrVal_AsFloat);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Arc2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Arc2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		// create point list of geometry object and convert it to line set.
		std::list<aiVector3D> tlist;

		GeometryHelper_Make_Arc2D(startAngle, endAngle, radius, 10, tlist);///TODO: IME - AI_CONFIG for NumSeg
		GeometryHelper_Extend_PointToLine(tlist, ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices);
		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 2;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Arc2D");
		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
}

// <ArcClose2D
// DEF=""              ID
// USE=""              IDREF
// closureType="PIE"   SFString [initializeOnly], {"PIE", "CHORD"}
// endAngle="1.570796" SFFloat  [initializeOnly]
// radius="1"          SFFloat  [initializeOnly]
// solid="false"       SFBool   [initializeOnly]
// startAngle="0"      SFFloat  [initializeOnly]
// />
// The ArcClose node specifies a portion of a circle whose center is at (0,0) and whose angles are measured starting at the positive x-axis and sweeping
// towards the positive y-axis. The end points of the arc specified are connected as defined by the closureType field. The radius field specifies the radius
// of the circle of which the arc is a portion. The arc extends from the startAngle counterclockwise to the endAngle. The value of radius shall be greater
// than zero. The values of startAngle and endAngle shall be in the range [-2pi, 2pi] radians (or the equivalent if a different default angle base unit has
// been specified). If startAngle and endAngle have the same value, a circle is specified and closureType is ignored. If the absolute difference between
// startAngle and endAngle is greater than or equal to 2pi, a complete circle is produced with no chord or radial line(s) drawn from the center.
// A closureType of "PIE" connects the end point to the start point by defining two straight line segments first from the end point to the center and then
// the center to the start point. A closureType of "CHORD" connects the end point to the start point by defining a straight line segment from the end point
// to the start point. Textures are applied individually to each face of the ArcClose2D. On the front (+Z) and back (-Z) faces of the ArcClose2D, when
// viewed from the +Z-axis, the texture is mapped onto each face with the same orientation as if the image were displayed normally in 2D.
void X3DImporter::ParseNode_Geometry2D_ArcClose2D()
{
    std::string def, use;
    std::string closureType("PIE");
    float endAngle = AI_MATH_HALF_PI_F;
    float radius = 1;
    bool solid = false;
    float startAngle = 0;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("closureType", closureType, mReader->getAttributeValue);
		MACRO_ATTRREAD_CHECK_RET("endAngle", endAngle, XML_ReadNode_GetAttrVal_AsFloat);
		MACRO_ATTRREAD_CHECK_RET("radius", radius, XML_ReadNode_GetAttrVal_AsFloat);
		MACRO_ATTRREAD_CHECK_RET("solid", solid, XML_ReadNode_GetAttrVal_AsBool);
		MACRO_ATTRREAD_CHECK_RET("startAngle", startAngle, XML_ReadNode_GetAttrVal_AsFloat);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_ArcClose2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_ArcClose2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		((CX3DImporter_NodeElement_Geometry2D*)ne)->Solid = solid;
		// create point list of geometry object.
		GeometryHelper_Make_Arc2D(startAngle, endAngle, radius, 10, ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices);///TODO: IME - AI_CONFIG for NumSeg
		// add chord or two radiuses only if not a circle was defined
		if(!((std::fabs(endAngle - startAngle) >= AI_MATH_TWO_PI_F) || (endAngle == startAngle)))
		{
			std::list<aiVector3D>& vlist = ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices;// just short alias.

			if((closureType == "PIE") || (closureType == "\"PIE\""))
				vlist.push_back(aiVector3D(0, 0, 0));// center point - first radial line
			else if((closureType != "CHORD") && (closureType != "\"CHORD\""))
				Throw_IncorrectAttrValue("closureType");

			vlist.push_back(*vlist.begin());// arc first point - chord from first to last point of arc(if CHORD) or second radial line(if PIE).
		}

		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices.size();
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "ArcClose2D");
		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
}

// <Circle2D
// DEF=""     ID
// USE=""     IDREF
// radius="1" SFFloat  [initializeOnly]
// />
void X3DImporter::ParseNode_Geometry2D_Circle2D()
{
    std::string def, use;
    float radius = 1;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("radius", radius, XML_ReadNode_GetAttrVal_AsFloat);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Circle2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Circle2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		// create point list of geometry object and convert it to line set.
		std::list<aiVector3D> tlist;

		GeometryHelper_Make_Arc2D(0, 0, radius, 10, tlist);///TODO: IME - AI_CONFIG for NumSeg
		GeometryHelper_Extend_PointToLine(tlist, ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices);
		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 2;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Circle2D");
		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
}

// <Disk2D
// DEF=""          ID
// USE=""          IDREF
// innerRadius="0" SFFloat  [initializeOnly]
// outerRadius="1" SFFloat  [initializeOnly]
// solid="false"   SFBool   [initializeOnly]
// />
// The Disk2D node specifies a circular disk which is centred at (0, 0) in the local coordinate system. The outerRadius field specifies the radius of the
// outer dimension of the Disk2D. The innerRadius field specifies the inner dimension of the Disk2D. The value of outerRadius shall be greater than zero.
// The value of innerRadius shall be greater than or equal to zero and less than or equal to outerRadius. If innerRadius is zero, the Disk2D is completely
// filled. Otherwise, the area within the innerRadius forms a hole in the Disk2D. If innerRadius is equal to outerRadius, a solid circular line shall
// be drawn using the current line properties. Textures are applied individually to each face of the Disk2D. On the front (+Z) and back (-Z) faces of
// the Disk2D, when viewed from the +Z-axis, the texture is mapped onto each face with the same orientation as if the image were displayed normally in 2D.
void X3DImporter::ParseNode_Geometry2D_Disk2D()
{
    std::string def, use;
    float innerRadius = 0;
    float outerRadius = 1;
    bool solid = false;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_RET("innerRadius", innerRadius, XML_ReadNode_GetAttrVal_AsFloat);
		MACRO_ATTRREAD_CHECK_RET("outerRadius", outerRadius, XML_ReadNode_GetAttrVal_AsFloat);
		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_Disk2D, ne);
	}
	else
	{
		std::list<aiVector3D> tlist_o, tlist_i;

		if(innerRadius > outerRadius) Throw_IncorrectAttrValue("innerRadius");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Disk2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		// create point list of geometry object.
		///TODO: IME - AI_CONFIG for NumSeg
		GeometryHelper_Make_Arc2D(0, 0, outerRadius, 10, tlist_o);// outer circle
		if(innerRadius == 0.0f)
		{// make filled disk
			// in tlist_o we already have points of circle. just copy it and sign as polygon.
			((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices = tlist_o;
			((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = tlist_o.size();
		}
		else if(innerRadius == outerRadius)
		{// make circle
			// in tlist_o we already have points of circle. convert it to line set.
			GeometryHelper_Extend_PointToLine(tlist_o, ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices);
			((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 2;
		}
		else
		{// make disk
			std::list<aiVector3D>& vlist = ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices;// just short alias.

			GeometryHelper_Make_Arc2D(0, 0, innerRadius, 10, tlist_i);// inner circle
			//
			// create quad list from two point lists
			//
			if(tlist_i.size() < 2) throw DeadlyImportError("Disk2D. Not enough points for creating quad list.");// tlist_i and tlist_o has equal size.

			// add all quads except last
			for(std::list<aiVector3D>::iterator it_i = tlist_i.begin(), it_o = tlist_o.begin(); it_i != tlist_i.end();)
			{
				// do not forget - CCW direction
				vlist.push_back(*it_i++);// 1st point
				vlist.push_back(*it_o++);// 2nd point
				vlist.push_back(*it_o);// 3rd point
				vlist.push_back(*it_i);// 4th point
			}

			// add last quad
			vlist.push_back(*tlist_i.end());// 1st point
			vlist.push_back(*tlist_o.end());// 2nd point
			vlist.push_back(*tlist_o.begin());// 3rd point
			vlist.push_back(*tlist_o.begin());// 4th point

			((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 4;
		}

		((CX3DImporter_NodeElement_Geometry2D*)ne)->Solid = solid;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Disk2D");
		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
}

// <Polyline2D
// DEF=""          ID
// USE=""          IDREF
// lineSegments="" MFVec2F [intializeOnly]
// />
void X3DImporter::ParseNode_Geometry2D_Polyline2D()
{
    std::string def, use;
    std::list<aiVector2D> lineSegments;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("lineSegments", lineSegments, XML_ReadNode_GetAttrVal_AsListVec2f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Polyline2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Polyline2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		//
		// convert read point list of geometry object to line set.
		//
		std::list<aiVector3D> tlist;

		// convert vec2 to vec3
		for(std::list<aiVector2D>::iterator it2 = lineSegments.begin(); it2 != lineSegments.end(); it2++) tlist.push_back(aiVector3D(it2->x, it2->y, 0));

		// convert point set to line set
		GeometryHelper_Extend_PointToLine(tlist, ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices);
		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 2;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Polyline2D");
		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
}

// <Polypoint2D
// DEF=""   ID
// USE=""   IDREF
// point="" MFVec2F [inputOutput]
// />
void X3DImporter::ParseNode_Geometry2D_Polypoint2D()
{
    std::string def, use;
    std::list<aiVector2D> point;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("point", point, XML_ReadNode_GetAttrVal_AsListVec2f);
	MACRO_ATTRREAD_LOOPEND;

	// if "USE" defined then find already defined element.
	if(!use.empty())
	{
		MACRO_USE_CHECKANDAPPLY(def, use, ENET_Polypoint2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Polypoint2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		// convert vec2 to vec3
		for(std::list<aiVector2D>::iterator it2 = point.begin(); it2 != point.end(); it2++)
		{
			((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices.push_back(aiVector3D(it2->x, it2->y, 0));
		}

		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 1;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Polypoint2D");
		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
}

// <Rectangle2D
// DEF=""        ID
// USE=""        IDREF
// size="2 2"    SFVec2f [initializeOnly]
// solid="false" SFBool  [initializeOnly]
// />
void X3DImporter::ParseNode_Geometry2D_Rectangle2D()
{
    std::string def, use;
    aiVector2D size(2, 2);
    bool solid = false;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("size", size, XML_ReadNode_GetAttrVal_AsVec2f);
		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_Rectangle2D, ne);
	}
	else
	{
		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_Rectangle2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		float x1 = -size.x / 2.0f;
		float x2 = size.x / 2.0f;
		float y1 = -size.y / 2.0f;
		float y2 = size.y / 2.0f;
		std::list<aiVector3D>& vlist = ((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices;// just short alias.

		vlist.push_back(aiVector3D(x2, y1, 0));// 1st point
		vlist.push_back(aiVector3D(x2, y2, 0));// 2nd point
		vlist.push_back(aiVector3D(x1, y2, 0));// 3rd point
		vlist.push_back(aiVector3D(x1, y1, 0));// 4th point
		((CX3DImporter_NodeElement_Geometry2D*)ne)->Solid = solid;
		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 4;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "Rectangle2D");
		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
}

// <TriangleSet2D
// DEF=""        ID
// USE=""        IDREF
// solid="false" SFBool  [initializeOnly]
// vertices=""   MFVec2F [inputOutput]
// />
void X3DImporter::ParseNode_Geometry2D_TriangleSet2D()
{
    std::string def, use;
    bool solid = false;
    std::list<aiVector2D> vertices;
    CX3DImporter_NodeElement* ne( nullptr );

	MACRO_ATTRREAD_LOOPBEG;
		MACRO_ATTRREAD_CHECKUSEDEF_RET(def, use);
		MACRO_ATTRREAD_CHECK_REF("vertices", vertices, XML_ReadNode_GetAttrVal_AsListVec2f);
		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_TriangleSet2D, ne);
	}
	else
	{
		if(vertices.size() % 3) throw DeadlyImportError("TriangleSet2D. Not enough points for defining triangle.");

		// create and if needed - define new geometry object.
		ne = new CX3DImporter_NodeElement_Geometry2D(CX3DImporter_NodeElement::ENET_TriangleSet2D, NodeElement_Cur);
		if(!def.empty()) ne->ID = def;

		// convert vec2 to vec3
		for(std::list<aiVector2D>::iterator it2 = vertices.begin(); it2 != vertices.end(); it2++)
		{
			((CX3DImporter_NodeElement_Geometry2D*)ne)->Vertices.push_back(aiVector3D(it2->x, it2->y, 0));
		}

		((CX3DImporter_NodeElement_Geometry2D*)ne)->Solid = solid;
		((CX3DImporter_NodeElement_Geometry2D*)ne)->NumIndices = 3;
		// check for X3DMetadataObject childs.
		if(!mReader->isEmptyElement())
			ParseNode_Metadata(ne, "TriangleSet2D");
		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