var xp = {
    version: "1.0.0",
    createTime: "2018.6.19",
    author: "xupinhui"
}
var doubleArrowDefualParam = {
    type: "doublearrow",
    headHeightFactor: .25,
    headWidthFactor: .3,
    neckHeightFactor: .85,
    fixPointCount: 4,
    neckWidthFactor: .15
}
var tailedAttackArrowDefualParam = {
    headHeightFactor: .18,
    headWidthFactor: .3,
    neckHeightFactor: .85,
    neckWidthFactor: .15,
    tailWidthFactor: .1,
    headTailFactor: .8,
    swallowTailFactor: 1
};
var fineArrowDefualParam = {
    tailWidthFactor: 0.15,
    neckWidthFactor: 0.20,
    headWidthFactor: 0.25,
    headAngle: Math.PI / 8.5,
    neckAngle: Math.PI / 13
};
xp.algorithm = {},
xp.algorithm.doubleArrow = function (inputPoint) {
    this.connPoint = null;
    this.tempPoint4 = null;
    this.points = inputPoint;
    var result = {
        controlPoint: null,
        polygonalPoint: null
    };
    //获取已经点击的坐标数
    var t = inputPoint.length;
    if (!(2 > t)) {
        if (2 == t) return inputPoint;
        var o = this.points[0],    //第一个点
        e = this.points[1],        //第二个点
        r = this.points[2],        //第三个点
        t = inputPoint.length; //获取已经点击的坐标数
        //下面的是移动点位后的坐标
        3 == t ? this.tempPoint4 = xp.algorithm.getTempPoint4(o, e, r) : this.tempPoint4 = this.points[3],
        3 == t || 4 == t ? this.connPoint = P.PlotUtils.mid(o, e) : this.connPoint = this.points[4];
        var n, g;
        P.PlotUtils.isClockWise(o, e, r) ? (n = xp.algorithm.getArrowPoints(o, this.connPoint, this.tempPoint4, !1), g = xp.algorithm.getArrowPoints(this.connPoint, e, r, !0)) : (n = xp.algorithm.getArrowPoints(e, this.connPoint, r, !1), g = xp.algorithm.getArrowPoints(this.connPoint, o, this.tempPoint4, !0));
        var i = n.length,
        s = (i - 5) / 2,
        a = n.slice(0, s),
        l = n.slice(s, s + 5),
        u = n.slice(s + 5, i),
        c = g.slice(0, s),
        p = g.slice(s, s + 5),
        h = g.slice(s + 5, i);
        c = P.PlotUtils.getBezierPoints(c);
        var d = P.PlotUtils.getBezierPoints(h.concat(a.slice(1)));
        u = P.PlotUtils.getBezierPoints(u);
        var f = c.concat(p, d, l, u);
        var newArray = xp.algorithm.array2Dto1D(f);
        result.controlPoint = [o, e, r, this.tempPoint4, this.connPoint];
        result.polygonalPoint = Cesium.Cartesian3.fromDegreesArray(newArray);
    }
    return result;
},
xp.algorithm.threeArrow = function (inputPoint) {
    this.connPoint = null;
    this.tempPoint4 = null;
    this.tempPoint5 = null;
    this.points = inputPoint;
    var result = {
        controlPoint: null,
        polygonalPoint: null
    };
    //获取已经点击的坐标数
    var t = inputPoint.length;
    if (t >= 2) {
        if (t == 2) {
            return inputPoint;
        }
        var o = this.points[0],    //第一个点
        e = this.points[1],        //第二个点
        r = this.points[2],        //第三个点
        t = inputPoint.length; //获取已经点击的坐标数
        //下面的是移动点位后的坐标
        if (t == 3) {
            this.tempPoint4 = xp.algorithm.getTempPoint4(o, e, r);
            this.tempPoint5 = P.PlotUtils.mid(r, this.tempPoint4);
        } else {
            this.tempPoint4 = this.points[3];
            this.tempPoint5 = this.points[4];
        }
        if (t < 6) {
            this.connPoint = P.PlotUtils.mid(o, e);
        } else {
            this.connPoint = this.points[5];
        }
        var n, g;
        if (P.PlotUtils.isClockWise(o, e, r)) {
            n = xp.algorithm.getArrowPoints(o, this.connPoint, this.tempPoint4, !1);
            g = xp.algorithm.getArrowPoints(this.connPoint, e, r, !0);
        } else {
            n = xp.algorithm.getArrowPoints(e, this.connPoint, r, !1);
            g = xp.algorithm.getArrowPoints(this.connPoint, o, this.tempPoint4, !0);
        }
        var i = n.length,
        s = (i - 5) / 2,
        a = n.slice(0, s),
        l = n.slice(s, s + 5),
        u = n.slice(s + 5, i),
        c = g.slice(0, s),
        p = g.slice(s, s + 5),
        h = g.slice(s + 5, i);
        c = P.PlotUtils.getBezierPoints(c);
        var d = P.PlotUtils.getBezierPoints(h.concat(a.slice(1)));
        u = P.PlotUtils.getBezierPoints(u);
        var f = c.concat(p, d, l, u);
        var newArray = xp.algorithm.array2Dto1D(f);
        result.controlPoint = [o, e, r, this.tempPoint4, this.tempPoint5, this.connPoint];
        result.polygonalPoint = Cesium.Cartesian3.fromDegreesArray(newArray);
    }
    return result;
},
xp.algorithm.array2Dto1D = function (array) {
    var newArray = [];
    array.forEach(function (elt) {
        newArray.push(elt[0]);
        newArray.push(elt[1]);
    });
    return newArray;
},
xp.algorithm.getArrowPoints = function (t, o, e, r) {
    this.type = doubleArrowDefualParam.type,
    this.headHeightFactor = doubleArrowDefualParam.headHeightFactor,
    this.headWidthFactor = doubleArrowDefualParam.headWidthFactor,
    this.neckHeightFactor = doubleArrowDefualParam.neckHeightFactor,
    this.neckWidthFactor = doubleArrowDefualParam.neckWidthFactor;
    var n = P.PlotUtils.mid(t, o),
    g = P.PlotUtils.distance(n, e),
    i = P.PlotUtils.getThirdPoint(e, n, 0, .3 * g, !0),
    s = P.PlotUtils.getThirdPoint(e, n, 0, .5 * g, !0);
    i = P.PlotUtils.getThirdPoint(n, i, P.Constants.HALF_PI, g / 5, r),
    s = P.PlotUtils.getThirdPoint(n, s, P.Constants.HALF_PI, g / 4, r);
    var a = [n, i, s, e],
    l = xp.algorithm.getArrowHeadPoints(a, this.headHeightFactor, this.headWidthFactor, this.neckHeightFactor, this.neckWidthFactor),
    u = l[0],
    c = l[4],
    p = P.PlotUtils.distance(t, o) / P.PlotUtils.getBaseLength(a) / 2,
    h = xp.algorithm.getArrowBodyPoints(a, u, c, p),
    d = h.length,
    f = h.slice(0, d / 2),
    E = h.slice(d / 2, d);
    return f.push(u),
    E.push(c),
    f = f.reverse(),
    f.push(o),
    E = E.reverse(),
    E.push(t),
    f.reverse().concat(l, E)
},
xp.algorithm.getArrowHeadPoints = function (t, o, e) {
    this.type = doubleArrowDefualParam.type,
    this.headHeightFactor = doubleArrowDefualParam.headHeightFactor,
    this.headWidthFactor = doubleArrowDefualParam.headWidthFactor,
    this.neckHeightFactor = doubleArrowDefualParam.neckHeightFactor,
    this.neckWidthFactor = doubleArrowDefualParam.neckWidthFactor;
    var r = P.PlotUtils.getBaseLength(t),
    n = r * this.headHeightFactor,
    g = t[t.length - 1],
    i = (P.PlotUtils.distance(o, e), n * this.headWidthFactor),
    s = n * this.neckWidthFactor,
    a = n * this.neckHeightFactor,
    l = P.PlotUtils.getThirdPoint(t[t.length - 2], g, 0, n, !0),
    u = P.PlotUtils.getThirdPoint(t[t.length - 2], g, 0, a, !0),
    c = P.PlotUtils.getThirdPoint(g, l, P.Constants.HALF_PI, i, !1),
    p = P.PlotUtils.getThirdPoint(g, l, P.Constants.HALF_PI, i, !0),
    h = P.PlotUtils.getThirdPoint(g, u, P.Constants.HALF_PI, s, !1),
    d = P.PlotUtils.getThirdPoint(g, u, P.Constants.HALF_PI, s, !0);
    return [h, c, g, p, d];
},
xp.algorithm.getArrowBodyPoints = function (t, o, e, r) {
    for (var n = P.PlotUtils.wholeDistance(t), g = P.PlotUtils.getBaseLength(t), i = g * r, s = P.PlotUtils.distance(o, e), a = (i - s) / 2, l = 0, u = [], c = [], p = 1; p < t.length - 1; p++) {
        var h = P.PlotUtils.getAngleOfThreePoints(t[p - 1], t[p], t[p + 1]) / 2;
        l += P.PlotUtils.distance(t[p - 1], t[p]);
        var d = (i / 2 - l / n * a) / Math.sin(h),
        f = P.PlotUtils.getThirdPoint(t[p - 1], t[p], Math.PI - h, d, !0),
        E = P.PlotUtils.getThirdPoint(t[p - 1], t[p], h, d, !1);
        u.push(f),
        c.push(E)
    }
    return u.concat(c)
},
xp.algorithm.getTempPoint4 = function (t, o, e) {
    var r, n, g, i, s = P.PlotUtils.mid(t, o),
    a = P.PlotUtils.distance(s, e),
    l = P.PlotUtils.getAngleOfThreePoints(t, s, e);
    return l < P.Constants.HALF_PI ? (n = a * Math.sin(l), g = a * Math.cos(l), i = P.PlotUtils.getThirdPoint(t, s, P.Constants.HALF_PI, n, !1), r = P.PlotUtils.getThirdPoint(s, i, P.Constants.HALF_PI, g, !0)) : l >= P.Constants.HALF_PI && l < Math.PI ? (n = a * Math.sin(Math.PI - l), g = a * Math.cos(Math.PI - l), i = P.PlotUtils.getThirdPoint(t, s, P.Constants.HALF_PI, n, !1), r = P.PlotUtils.getThirdPoint(s, i, P.Constants.HALF_PI, g, !1)) : l >= Math.PI && l < 1.5 * Math.PI ? (n = a * Math.sin(l - Math.PI), g = a * Math.cos(l - Math.PI), i = P.PlotUtils.getThirdPoint(t, s, P.Constants.HALF_PI, n, !0), r = P.PlotUtils.getThirdPoint(s, i, P.Constants.HALF_PI, g, !0)) : (n = a * Math.sin(2 * Math.PI - l), g = a * Math.cos(2 * Math.PI - l), i = P.PlotUtils.getThirdPoint(t, s, P.Constants.HALF_PI, n, !0), r = P.PlotUtils.getThirdPoint(s, i, P.Constants.HALF_PI, g, !1)),
    r
},
xp.algorithm.tailedAttackArrow = function (inputPoint) {
    inputPoint = xp.algorithm.dereplication(inputPoint);
    this.tailWidthFactor = tailedAttackArrowDefualParam.tailWidthFactor;
    this.swallowTailFactor = tailedAttackArrowDefualParam.swallowTailFactor;
    this.swallowTailPnt = tailedAttackArrowDefualParam.swallowTailPnt;
    //控制点
    var result = {
        controlPoint: null,
        polygonalPoint: null
    };
    result.controlPoint = inputPoint;
    var t = inputPoint.length;
    if (!(2 > t)) {
        if (2 == inputPoint.length) {
            result.polygonalPoint = inputPoint;
            return result;
        }
        var o = inputPoint,
        e = o[0],
        r = o[1];
        P.PlotUtils.isClockWise(o[0], o[1], o[2]) && (e = o[1], r = o[0]);
        var n = P.PlotUtils.mid(e, r),
        g = [n].concat(o.slice(2)),
        i = xp.algorithm.getAttackArrowHeadPoints(g, e, r, tailedAttackArrowDefualParam),
        s = i[0],
        a = i[4],
        l = P.PlotUtils.distance(e, r),
        u = P.PlotUtils.getBaseLength(g),
        c = u * this.tailWidthFactor * this.swallowTailFactor;
        this.swallowTailPnt = P.PlotUtils.getThirdPoint(g[1], g[0], 0, c, !0);
        var p = l / u,
        h = xp.algorithm.getAttackArrowBodyPoints(g, s, a, p),
        t = h.length,
        d = [e].concat(h.slice(0, t / 2));
        d.push(s);
        var f = [r].concat(h.slice(t / 2, t));
        var newArray = [];
        f.push(a),
        d = P.PlotUtils.getQBSplinePoints(d),
        f = P.PlotUtils.getQBSplinePoints(f),
        newArray = xp.algorithm.array2Dto1D(d.concat(i, f.reverse(), [this.swallowTailPnt, d[0]]));
        result.polygonalPoint = Cesium.Cartesian3.fromDegreesArray(newArray);
    }
    return result;
},
xp.algorithm.getAttackArrowHeadPoints = function (t, o, e, defaultParam) {
    this.headHeightFactor = defaultParam.headHeightFactor;
    this.headTailFactor = defaultParam.headTailFactor;
    this.headWidthFactor = defaultParam.headWidthFactor;
    this.neckWidthFactor = defaultParam.neckWidthFactor;
    this.neckHeightFactor = defaultParam.neckHeightFactor;
    var r = P.PlotUtils.getBaseLength(t),
    n = r * this.headHeightFactor,
    g = t[t.length - 1];
    r = P.PlotUtils.distance(g, t[t.length - 2]);
    var i = P.PlotUtils.distance(o, e);
    n > i * this.headTailFactor && (n = i * this.headTailFactor);
    var s = n * this.headWidthFactor,
    a = n * this.neckWidthFactor;
    n = n > r ? r : n;
    var l = n * this.neckHeightFactor,
    u = P.PlotUtils.getThirdPoint(t[t.length - 2], g, 0, n, !0),
    c = P.PlotUtils.getThirdPoint(t[t.length - 2], g, 0, l, !0),
    p = P.PlotUtils.getThirdPoint(g, u, P.Constants.HALF_PI, s, !1),
    h = P.PlotUtils.getThirdPoint(g, u, P.Constants.HALF_PI, s, !0),
    d = P.PlotUtils.getThirdPoint(g, c, P.Constants.HALF_PI, a, !1),
    f = P.PlotUtils.getThirdPoint(g, c, P.Constants.HALF_PI, a, !0);
    return [d, p, g, h, f]
},
xp.algorithm.getAttackArrowBodyPoints = function (t, o, e, r) {
    for (var n = P.PlotUtils.wholeDistance(t), g = P.PlotUtils.getBaseLength(t), i = g * r, s = P.PlotUtils.distance(o, e), a = (i - s) / 2, l = 0, u = [], c = [], p = 1; p < t.length - 1; p++) {
        var h = P.PlotUtils.getAngleOfThreePoints(t[p - 1], t[p], t[p + 1]) / 2;
        l += P.PlotUtils.distance(t[p - 1], t[p]);
        var d = (i / 2 - l / n * a) / Math.sin(h),
        f = P.PlotUtils.getThirdPoint(t[p - 1], t[p], Math.PI - h, d, !0),
        E = P.PlotUtils.getThirdPoint(t[p - 1], t[p], h, d, !1);
        u.push(f),
        c.push(E)
    }
    return u.concat(c)
},
xp.algorithm.dereplication = function (array) {
    var last = array[array.length - 1];
    var change = false;
    var newArray = [];
    newArray = array.filter(function (i) {
        if (i[0] != last[0] && i[1] != last[1]) {
            return i;
        }
        change = true;
    });
    if (change) newArray.push(last);
    return newArray;
},
xp.algorithm.fineArrow = function (tailPoint, headerPoint) {
    if ((tailPoint.length < 2) || (headerPoint.length < 2)) return;
    //画箭头的函数
    let tailWidthFactor = fineArrowDefualParam.tailWidthFactor;
    let neckWidthFactor = fineArrowDefualParam.neckWidthFactor;
    let headWidthFactor = fineArrowDefualParam.headWidthFactor;
    let headAngle = fineArrowDefualParam.headAngle;
    let neckAngle = fineArrowDefualParam.neckAngle;
    var o = [];
    o[0] = tailPoint;
    o[1] = headerPoint;
    e = o[0],
    r = o[1],
    n = P.PlotUtils.getBaseLength(o),
    g = n * tailWidthFactor,
    //尾部宽度因子
    i = n * neckWidthFactor,
    //脖子宽度银子
    s = n * headWidthFactor,
    //头部宽度因子
    a = P.PlotUtils.getThirdPoint(r, e, P.Constants.HALF_PI, g, !0),
    l = P.PlotUtils.getThirdPoint(r, e, P.Constants.HALF_PI, g, !1),
    u = P.PlotUtils.getThirdPoint(e, r, headAngle, s, !1),
    c = P.PlotUtils.getThirdPoint(e, r, headAngle, s, !0),
    p = P.PlotUtils.getThirdPoint(e, r, neckAngle, i, !1),
    h = P.PlotUtils.getThirdPoint(e, r, neckAngle, i, !0),
    d = [];
    d.push(a[0], a[1], p[0], p[1], u[0], u[1], r[0], r[1], c[0], c[1], h[0], h[1], l[0], l[1], e[0], e[1]);
    return Cesium.Cartesian3.fromDegreesArray(d);
}