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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_Macro.hpp"

#include "X3DXmlHelper.h"

#include "X3DGeoHelper.h"

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::readArc2D(XmlNode &node) {

    std::string def, use;

    float endAngle = AI_MATH_HALF_PI_F;

    float radius = 1;

    float startAngle = 0;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    XmlParser::getFloatAttribute(node, "endAngle", endAngle);

    XmlParser::getFloatAttribute(node, "radius", radius);

    XmlParser::getFloatAttribute(node, "startAngle", startAngle);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Arc2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Arc2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        // create point list of geometry object and convert it to line set.

        std::list<aiVector3D> tlist;

        X3DGeoHelper::make_arc2D(startAngle, endAngle, radius, 10, tlist); ///TODO: IME - AI_CONFIG for NumSeg

        X3DGeoHelper::extend_point_to_line(tlist, ((X3DNodeElementGeometry2D *)ne)->Vertices);

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 2;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Arc2D");

        else

            mNodeElementCur->Children.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::readArcClose2D(XmlNode &node) {

    std::string def, use;

    std::string closureType("PIE");

    float endAngle = AI_MATH_HALF_PI_F;

    float radius = 1;

    bool solid = false;

    float startAngle = 0;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    XmlParser::getStdStrAttribute(node, "closureType", closureType);

    XmlParser::getFloatAttribute(node, "endAngle", endAngle);

    XmlParser::getFloatAttribute(node, "endAngle", endAngle);

    XmlParser::getFloatAttribute(node, "radius", radius);

    XmlParser::getBoolAttribute(node, "solid", solid);

    XmlParser::getFloatAttribute(node, "startAngle", startAngle);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_ArcClose2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_ArcClose2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        ((X3DNodeElementGeometry2D *)ne)->Solid = solid;

        // create point list of geometry object.

        X3DGeoHelper::make_arc2D(startAngle, endAngle, radius, 10, ((X3DNodeElementGeometry2D *)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 = ((X3DNodeElementGeometry2D *)ne)->Vertices; // just short alias.

            if ((closureType == "PIE") || (closureType == "\"PIE\""))

                vlist.emplace_back(static_cast<ai_real>(0), static_cast<ai_real>(0), static_cast<ai_real>(0)); // center point - first radial line

            else if ((closureType != "CHORD") && (closureType != "\"CHORD\""))

                Throw_IncorrectAttrValue("ArcClose2D", "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).

        }

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = ((X3DNodeElementGeometry2D *)ne)->Vertices.size();

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "ArcClose2D");

        else

            mNodeElementCur->Children.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::readCircle2D(XmlNode &node) {

    std::string def, use;

    float radius = 1;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    XmlParser::getFloatAttribute(node, "radius", radius);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Circle2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Circle2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        // create point list of geometry object and convert it to line set.

        std::list<aiVector3D> tlist;

        X3DGeoHelper::make_arc2D(0, 0, radius, 10, tlist); ///TODO: IME - AI_CONFIG for NumSeg

        X3DGeoHelper::extend_point_to_line(tlist, ((X3DNodeElementGeometry2D *)ne)->Vertices);

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 2;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Circle2D");

        else

            mNodeElementCur->Children.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::readDisk2D(XmlNode &node) {

    std::string def, use;

    float innerRadius = 0;

    float outerRadius = 1;

    bool solid = false;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    XmlParser::getFloatAttribute(node, "innerRadius", innerRadius);

    XmlParser::getFloatAttribute(node, "outerRadius", outerRadius);

    XmlParser::getBoolAttribute(node, "solid", solid);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Disk2D, ne);

    } else {

        std::list<aiVector3D> tlist_o, tlist_i;

        if (innerRadius > outerRadius) Throw_IncorrectAttrValue("Disk2D", "innerRadius");

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Disk2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        // create point list of geometry object.

        ///TODO: IME - AI_CONFIG for NumSeg

        X3DGeoHelper::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.

            ((X3DNodeElementGeometry2D *)ne)->Vertices = tlist_o;

            ((X3DNodeElementGeometry2D *)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.

            X3DGeoHelper::extend_point_to_line(tlist_o, ((X3DNodeElementGeometry2D *)ne)->Vertices);

            ((X3DNodeElementGeometry2D *)ne)->NumIndices = 2;

        } else { // make disk

            std::list<aiVector3D> &vlist = ((X3DNodeElementGeometry2D *)ne)->Vertices; // just short alias.

            X3DGeoHelper::make_arc2D(0, 0, innerRadius, 10, tlist_i); // inner circle

            //

            // create quad list from two point lists

            //

            if (tlist_i.size() < 2) {

                // tlist_i and tlist_o has equal size.

                throw DeadlyImportError("Disk2D. Not enough points for creating quad list.");

            }

            // 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.emplace_back(*it_i++); // 1st point

                vlist.emplace_back(*it_o++); // 2nd point

                vlist.emplace_back(*it_o); // 3rd point

                vlist.emplace_back(*it_i); // 4th point

            }

            // add last quad

            vlist.emplace_back(tlist_i.back()); // 1st point

            vlist.emplace_back(tlist_o.back()); // 2nd point

            vlist.emplace_back(tlist_o.front()); // 3rd point

            vlist.emplace_back(tlist_i.front()); // 4th point

            ((X3DNodeElementGeometry2D *)ne)->NumIndices = 4;

        }

        ((X3DNodeElementGeometry2D *)ne)->Solid = solid;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Disk2D");

        else

            mNodeElementCur->Children.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::readPolyline2D(XmlNode &node) {

    std::string def, use;

    std::list<aiVector2D> lineSegments;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    X3DXmlHelper::getVector2DListAttribute(node, "lineSegments", lineSegments);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Polyline2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Polyline2D, mNodeElementCur);

        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.emplace_back(it2->x, it2->y, static_cast<ai_real>(0));

        // convert point set to line set

        X3DGeoHelper::extend_point_to_line(tlist, ((X3DNodeElementGeometry2D *)ne)->Vertices);

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 2;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Polyline2D");

        else

            mNodeElementCur->Children.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::readPolypoint2D(XmlNode &node) {

    std::string def, use;

    std::list<aiVector2D> point;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    X3DXmlHelper::getVector2DListAttribute(node, "point", point);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Polypoint2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Polypoint2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        // convert vec2 to vec3

        for (std::list<aiVector2D>::iterator it2 = point.begin(); it2 != point.end(); ++it2) {

            ((X3DNodeElementGeometry2D *)ne)->Vertices.emplace_back(it2->x, it2->y, static_cast<ai_real>(0));

        }

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 1;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Polypoint2D");

        else

            mNodeElementCur->Children.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::readRectangle2D(XmlNode &node) {

    std::string def, use;

    aiVector2D size(2, 2);

    bool solid = false;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    X3DXmlHelper::getVector2DAttribute(node, "size", size);

    XmlParser::getBoolAttribute(node, "solid", solid);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, def, use, ENET_Rectangle2D, ne);

    } else {

        // create and if needed - define new geometry object.

        ne = new X3DNodeElementGeometry2D(X3DElemType::ENET_Rectangle2D, mNodeElementCur);

        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 = ((X3DNodeElementGeometry2D *)ne)->Vertices; // just short alias.

        vlist.emplace_back(x2, y1, static_cast<ai_real>(0)); // 1st point

        vlist.emplace_back(x2, y2, static_cast<ai_real>(0)); // 2nd point

        vlist.emplace_back(x1, y2, static_cast<ai_real>(0)); // 3rd point

        vlist.emplace_back(x1, y1, static_cast<ai_real>(0)); // 4th point

        ((X3DNodeElementGeometry2D *)ne)->Solid = solid;

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 4;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "Rectangle2D");

        else

            mNodeElementCur->Children.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::readTriangleSet2D(XmlNode &node) {

    std::string def, use;

    bool solid = false;

    std::list<aiVector2D> vertices;

    X3DNodeElementBase *ne(nullptr);

    MACRO_ATTRREAD_CHECKUSEDEF_RET(node, def, use);

    X3DXmlHelper::getVector2DListAttribute(node, "vertices", vertices);

    XmlParser::getBoolAttribute(node, "solid", solid);

    // if "USE" defined then find already defined element.

    if (!use.empty()) {

        ne = MACRO_USE_CHECKANDAPPLY(node, 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 X3DNodeElementGeometry2D(X3DElemType::ENET_TriangleSet2D, mNodeElementCur);

        if (!def.empty()) ne->ID = def;

        // convert vec2 to vec3

        for (std::list<aiVector2D>::iterator it2 = vertices.begin(); it2 != vertices.end(); ++it2) {

            ((X3DNodeElementGeometry2D *)ne)->Vertices.emplace_back(it2->x, it2->y, static_cast<ai_real>(0));

        }

        ((X3DNodeElementGeometry2D *)ne)->Solid = solid;

        ((X3DNodeElementGeometry2D *)ne)->NumIndices = 3;

        // check for X3DMetadataObject childs.

        if (!isNodeEmpty(node))

            childrenReadMetadata(node, ne, "TriangleSet2D");

        else

            mNodeElementCur->Children.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