/* *
 *
 *  Highcharts funnel3d series module
 *
 *  (c) 2010-2019 Highsoft AS
 *
 *  Author: Kacper Madej
 *
 *  License: www.highcharts.com/license
 *
 *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
 *
 * */
'use strict';
import H from '../parts/Globals.js';
import '../parts/Utilities.js';
import '../parts/ColumnSeries.js';
import '../parts/SvgRenderer.js';
var charts = H.charts, color = H.color, error = H.error, extend = H.extend, merge = H.merge, pick = H.pick, seriesType = H.seriesType, seriesTypes = H.seriesTypes, relativeLength = H.relativeLength, 
// Use H.Renderer instead of H.SVGRenderer for VML support.
RendererProto = H.Renderer.prototype, 
//
cuboidPath = RendererProto.cuboidPath, funnel3dMethods;
/**
 * The funnel3d series type.
 *
 * Requires `highcharts-3d.js`, `cylinder.js` and `funnel3d.js` module.
 *
 * @constructor seriesTypes.funnel3d
 * @augments seriesTypes.column
 */
seriesType('funnel3d', 'column', 
/**
 * A funnel3d is a 3d version of funnel series type. Funnel charts are
 * a type of chart often used to visualize stages in a sales project,
 * where the top are the initial stages with the most clients.
 *
 * It requires that the `highcharts-3d.js`, `cylinder.js` and
 * `funnel3d.js` module are loaded.
 *
 * @sample highcharts/demo/funnel3d/
 *         Funnel3d
 *
 * @extends      plotOptions.column
 * @excluding    allAreas, boostThreshold, colorAxis, compare, compareBase
 * @product      highcharts
 * @since        7.1.0
 * @optionparent plotOptions.funnel3d
 */
{
    /** @ignore-option */
    center: ['50%', '50%'],
    /**
     * The max width of the series compared to the width of the plot area,
     * or the pixel width if it is a number.
     *
     * @type    {number|string}
     * @sample  {highcharts} highcharts/demo/funnel3d/ Funnel3d demo
     * @product highcharts
     */
    width: '90%',
    /**
     * The width of the neck, the lower part of the funnel. A number defines
     * pixel width, a percentage string defines a percentage of the plot
     * area width.
     *
     * @type    {number|string}
     * @sample  {highcharts} highcharts/demo/funnel3d/ Funnel3d demo
     * @product highcharts
     */
    neckWidth: '30%',
    /**
     * The height of the series. If it is a number it defines
     * the pixel height, if it is a percentage string it is the percentage
     * of the plot area height.
     *
     * @type    {number|string}
     * @sample  {highcharts} highcharts/demo/funnel3d/ Funnel3d demo
     * @product highcharts
     */
    height: '100%',
    /**
     * The height of the neck, the lower part of the funnel. A number
     * defines pixel width, a percentage string defines a percentage
     * of the plot area height.
     *
     * @type    {number|string}
     * @sample  {highcharts} highcharts/demo/funnel3d/ Funnel3d demo
     * @product highcharts
     */
    neckHeight: '25%',
    /**
     * A reversed funnel has the widest area down. A reversed funnel with
     * no neck width and neck height is a pyramid.
     *
     * @product highcharts
     */
    reversed: false,
    /**
     * By deafult sides fill is set to a gradient through this option being
     * set to `true`. Set to `false` to get solid color for the sides.
     *
     * @product highcharts
     */
    gradientForSides: true,
    animation: false,
    edgeWidth: 0,
    colorByPoint: true,
    showInLegend: false,
    /**
     * @default {"align": "right", "crop": false, "inside": false, "overflow": "allow"}
     */
    dataLabels: {
        /** @ignore-option */
        align: 'right',
        /** @ignore-option */
        crop: false,
        /** @ignore-option */
        inside: false,
        /** @ignore-option */
        overflow: 'allow'
    }
}, {
    // Override default axis options with series required options for axes
    bindAxes: function () {
        H.Series.prototype.bindAxes.apply(this, arguments);
        extend(this.xAxis.options, {
            gridLineWidth: 0,
            lineWidth: 0,
            title: null,
            tickPositions: []
        });
        extend(this.yAxis.options, {
            gridLineWidth: 0,
            title: null,
            labels: {
                enabled: false
            }
        });
    },
    translate3dShapes: H.noop,
    translate: function () {
        H.Series.prototype.translate.apply(this, arguments);
        var sum = 0, series = this, chart = series.chart, options = series.options, reversed = options.reversed, ignoreHiddenPoint = options.ignoreHiddenPoint, plotWidth = chart.plotWidth, plotHeight = chart.plotHeight, cumulative = 0, // start at top
        center = options.center, centerX = relativeLength(center[0], plotWidth), centerY = relativeLength(center[1], plotHeight), width = relativeLength(options.width, plotWidth), tempWidth, getWidthAt, height = relativeLength(options.height, plotHeight), neckWidth = relativeLength(options.neckWidth, plotWidth), neckHeight = relativeLength(options.neckHeight, plotHeight), neckY = (centerY - height / 2) + height - neckHeight, data = series.data, fraction, tooltipPos, 
        //
        y1, y3, y5, 
        //
        h, shapeArgs;
        // Return the width at a specific y coordinate
        series.getWidthAt = getWidthAt = function (y) {
            var top = (centerY - height / 2);
            return (y > neckY || height === neckHeight) ?
                neckWidth :
                neckWidth + (width - neckWidth) *
                    (1 - (y - top) / (height - neckHeight));
        };
        // Expose
        series.center = [centerX, centerY, height];
        series.centerX = centerX;
        /*
         * Individual point coordinate naming:
         *
         *  _________centerX,y1________
         *  \                         /
         *   \                       /
         *    \                     /
         *     \                   /
         *      \                 /
         *        ___centerX,y3___
         *
         * Additional for the base of the neck:
         *
         *       |               |
         *       |               |
         *       |               |
         *        ___centerX,y5___
         */
        // get the total sum
        data.forEach(function (point) {
            if (!ignoreHiddenPoint || point.visible !== false) {
                sum += point.y;
            }
        });
        data.forEach(function (point) {
            // set start and end positions
            y5 = null;
            fraction = sum ? point.y / sum : 0;
            y1 = centerY - height / 2 + cumulative * height;
            y3 = y1 + fraction * height;
            tempWidth = getWidthAt(y1);
            h = y3 - y1;
            shapeArgs = {
                // for fill setter
                gradientForSides: pick(point.options.gradientForSides, options.gradientForSides),
                x: centerX,
                y: y1,
                height: h,
                width: tempWidth,
                z: 1,
                top: {
                    width: tempWidth
                }
            };
            tempWidth = getWidthAt(y3);
            shapeArgs.bottom = {
                fraction: fraction,
                width: tempWidth
            };
            // the entire point is within the neck
            if (y1 >= neckY) {
                shapeArgs.isCylinder = true;
            }
            else if (y3 > neckY) {
                // the base of the neck
                y5 = y3;
                tempWidth = getWidthAt(neckY);
                y3 = neckY;
                shapeArgs.bottom.width = tempWidth;
                shapeArgs.middle = {
                    fraction: h ? (neckY - y1) / h : 0,
                    width: tempWidth
                };
            }
            if (reversed) {
                shapeArgs.y = y1 = centerY + height / 2 -
                    (cumulative + fraction) * height;
                if (shapeArgs.middle) {
                    shapeArgs.middle.fraction = 1 -
                        (h ? shapeArgs.middle.fraction : 0);
                }
                tempWidth = shapeArgs.width;
                shapeArgs.width = shapeArgs.bottom.width;
                shapeArgs.bottom.width = tempWidth;
            }
            point.shapeArgs = extend(point.shapeArgs, shapeArgs);
            // for tooltips and data labels context
            point.percentage = fraction * 100;
            point.plotX = centerX;
            if (reversed) {
                point.plotY = centerY + height / 2 -
                    (cumulative + fraction / 2) * height;
            }
            else {
                point.plotY = (y1 + (y5 || y3)) / 2;
            }
            // Placement of tooltips and data labels in 3D
            tooltipPos = H.perspective([{
                    x: centerX,
                    y: point.plotY,
                    z: reversed ?
                        -(width - getWidthAt(point.plotY)) / 2 :
                        -(getWidthAt(point.plotY)) / 2
                }], chart, true)[0];
            point.tooltipPos = [tooltipPos.x, tooltipPos.y];
            // base to be used when alignment options are known
            point.dlBoxRaw = {
                x: centerX,
                width: getWidthAt(point.plotY),
                y: y1,
                bottom: shapeArgs.height,
                fullWidth: width
            };
            if (!ignoreHiddenPoint || point.visible !== false) {
                cumulative += fraction;
            }
        });
    },
    alignDataLabel: function (point, dataLabel, options) {
        var series = this, dlBoxRaw = point.dlBoxRaw, inverted = series.chart.inverted, below = point.plotY > pick(series.translatedThreshold, series.yAxis.len), inside = pick(options.inside, !!series.options.stacking), dlBox = {
            x: dlBoxRaw.x,
            y: dlBoxRaw.y,
            height: 0
        };
        options.align = pick(options.align, !inverted || inside ? 'center' : below ? 'right' : 'left');
        options.verticalAlign = pick(options.verticalAlign, inverted || inside ? 'middle' : below ? 'top' : 'bottom');
        if (options.verticalAlign !== 'top') {
            dlBox.y += dlBoxRaw.bottom /
                (options.verticalAlign === 'bottom' ? 1 : 2);
        }
        dlBox.width = series.getWidthAt(dlBox.y);
        if (series.options.reversed) {
            dlBox.width = dlBoxRaw.fullWidth - dlBox.width;
        }
        if (inside) {
            dlBox.x -= dlBox.width / 2;
        }
        else {
            // swap for inside
            if (options.align === 'left') {
                options.align = 'right';
                dlBox.x -= dlBox.width * 1.5;
            }
            else if (options.align === 'right') {
                options.align = 'left';
                dlBox.x += dlBox.width / 2;
            }
            else {
                dlBox.x -= dlBox.width / 2;
            }
        }
        point.dlBox = dlBox;
        seriesTypes.column.prototype.alignDataLabel.apply(series, arguments);
    }
}, /** @lends seriesTypes.funnel3d.prototype.pointClass.prototype */ {
    shapeType: 'funnel3d'
});
/**
 * A `funnel3d` series. If the [type](#series.funnel3d.type) option is
 * not specified, it is inherited from [chart.type](#chart.type).
 *
 * @since     7.1.0
 * @extends   series,plotOptions.funnel3d
 * @excluding allAreas,boostThreshold,colorAxis,compare,compareBase
 * @product   highcharts
 * @sample    {highcharts} highcharts/demo/funnel3d/ Funnel3d demo
 * @apioption series.funnel3d
 */
/**
 * An array of data points for the series. For the `funnel3d` series
 * type, points can be given in the following ways:
 *
 * 1.  An array of numerical values. In this case, the numerical values
 * will be interpreted as `y` options. The `x` values will be automatically
 * calculated, either starting at 0 and incremented by 1, or from `pointStart`
 * and `pointInterval` given in the series options. If the axis has
 * categories, these will be used. Example:
 *
 *  ```js
 *  data: [0, 5, 3, 5]
 *  ```
 *
 * 2.  An array of objects with named values. The following snippet shows only a
 * few settings, see the complete options set below. If the total number of data
 * points exceeds the series' [turboThreshold](#series.funnel3d.turboThreshold),
 * this option is not available.
 *
 *  ```js
 *     data: [{
 *         y: 2,
 *         name: "Point2",
 *         color: "#00FF00"
 *     }, {
 *         y: 4,
 *         name: "Point1",
 *         color: "#FF00FF"
 *     }]
 *  ```
 *
 * @sample {highcharts} highcharts/chart/reflow-true/
 *         Numerical values
 * @sample {highcharts} highcharts/series/data-array-of-arrays/
 *         Arrays of numeric x and y
 * @sample {highcharts} highcharts/series/data-array-of-arrays-datetime/
 *         Arrays of datetime x and y
 * @sample {highcharts} highcharts/series/data-array-of-name-value/
 *         Arrays of point.name and y
 * @sample {highcharts} highcharts/series/data-array-of-objects/
 *         Config objects
 *
 * @type      {Array<number|Array<number>|*>}
 * @extends   series.column.data
 * @product   highcharts
 * @apioption series.funnel3d.data
 */
/**
 * By deafult sides fill is set to a gradient through this option being
 * set to `true`. Set to `false` to get solid color for the sides.
 *
 * @type      {boolean}
 * @product   highcharts
 * @apioption series.funnel3d.data.gradientForSides
 */
funnel3dMethods = H.merge(RendererProto.elements3d.cuboid, {
    parts: [
        'top', 'bottom',
        'frontUpper', 'backUpper',
        'frontLower', 'backLower',
        'rightUpper', 'rightLower'
    ],
    mainParts: ['top', 'bottom'],
    sideGroups: [
        'upperGroup', 'lowerGroup'
    ],
    sideParts: {
        upperGroup: ['frontUpper', 'backUpper', 'rightUpper'],
        lowerGroup: ['frontLower', 'backLower', 'rightLower']
    },
    pathType: 'funnel3d',
    // override opacity and color setters to control opacity
    opacitySetter: function (opacity) {
        var funnel3d = this, parts = funnel3d.parts, chart = H.charts[funnel3d.renderer.chartIndex], filterId = 'group-opacity-' + opacity + '-' + chart.index;
        // use default for top and bottom
        funnel3d.parts = funnel3d.mainParts;
        funnel3d.singleSetterForParts('opacity', opacity);
        // restore
        funnel3d.parts = parts;
        if (!chart.renderer.filterId) {
            chart.renderer.definition({
                tagName: 'filter',
                id: filterId,
                children: [{
                        tagName: 'feComponentTransfer',
                        children: [{
                                tagName: 'feFuncA',
                                type: 'table',
                                tableValues: '0 ' + opacity
                            }]
                    }]
            });
            funnel3d.sideGroups.forEach(function (groupName) {
                funnel3d[groupName].attr({
                    filter: 'url(#' + filterId + ')'
                });
            });
            // styled mode
            if (funnel3d.renderer.styledMode) {
                chart.renderer.definition({
                    tagName: 'style',
                    textContent: '.highcharts-' + filterId +
                        ' {filter:url(#' + filterId + ')}'
                });
                funnel3d.sideGroups.forEach(function (group) {
                    group.addClass('highcharts-' + filterId);
                });
            }
        }
        return funnel3d;
    },
    fillSetter: function (fill) {
        // extract alpha channel to use the opacitySetter
        var funnel3d = this, fillColor = color(fill), alpha = fillColor.rgba[3], partsWithColor = {
            // standard color for top and bottom
            top: color(fill).brighten(0.1).get(),
            bottom: color(fill).brighten(-0.2).get()
        };
        if (alpha < 1) {
            fillColor.rgba[3] = 1;
            fillColor = fillColor.get('rgb');
            // set opacity through the opacitySetter
            funnel3d.attr({
                opacity: alpha
            });
        }
        else {
            // use default for full opacity
            fillColor = fill;
        }
        // add gradient for sides
        if (!fillColor.linearGradient &&
            !fillColor.radialGradient &&
            funnel3d.gradientForSides) {
            fillColor = {
                linearGradient: { x1: 0, x2: 1, y1: 1, y2: 1 },
                stops: [
                    [0, color(fill).brighten(-0.2).get()],
                    [0.5, fill],
                    [1, color(fill).brighten(-0.2).get()]
                ]
            };
        }
        // gradient support
        if (fillColor.linearGradient) {
            // color in steps, as each gradient will generate a key
            funnel3d.sideGroups.forEach(function (sideGroupName) {
                var box = funnel3d[sideGroupName].gradientBox, gradient = fillColor.linearGradient, alteredGradient = merge(fillColor, {
                    linearGradient: {
                        x1: box.x + gradient.x1 * box.width,
                        y1: box.y + gradient.y1 * box.height,
                        x2: box.x + gradient.x2 * box.width,
                        y2: box.y + gradient.y2 * box.height
                    }
                });
                funnel3d.sideParts[sideGroupName].forEach(function (partName) {
                    partsWithColor[partName] = alteredGradient;
                });
            });
        }
        else {
            merge(true, partsWithColor, {
                frontUpper: fillColor,
                backUpper: fillColor,
                rightUpper: fillColor,
                frontLower: fillColor,
                backLower: fillColor,
                rightLower: fillColor
            });
            if (fillColor.radialGradient) {
                funnel3d.sideGroups.forEach(function (sideGroupName) {
                    var gradBox = funnel3d[sideGroupName].gradientBox, centerX = gradBox.x + gradBox.width / 2, centerY = gradBox.y + gradBox.height / 2, diameter = Math.min(gradBox.width, gradBox.height);
                    funnel3d.sideParts[sideGroupName].forEach(function (partName) {
                        funnel3d[partName].setRadialReference([
                            centerX, centerY, diameter
                        ]);
                    });
                });
            }
        }
        funnel3d.singleSetterForParts('fill', null, partsWithColor);
        // fill for animation getter (#6776)
        funnel3d.color = funnel3d.fill = fill;
        // change gradientUnits to userSpaceOnUse for linearGradient
        if (fillColor.linearGradient) {
            [funnel3d.frontLower, funnel3d.frontUpper].forEach(function (part) {
                var elem = part.element, grad = elem && funnel3d.renderer.gradients[elem.gradient];
                if (grad && grad.attr('gradientUnits') !== 'userSpaceOnUse') {
                    grad.attr({
                        gradientUnits: 'userSpaceOnUse'
                    });
                }
            });
        }
        return funnel3d;
    },
    adjustForGradient: function () {
        var funnel3d = this, bbox;
        funnel3d.sideGroups.forEach(function (sideGroupName) {
            // use common extremes for groups for matching gradients
            var topLeftEdge = {
                x: Number.MAX_VALUE,
                y: Number.MAX_VALUE
            }, bottomRightEdge = {
                x: -Number.MAX_VALUE,
                y: -Number.MAX_VALUE
            };
            // get extremes
            funnel3d.sideParts[sideGroupName].forEach(function (partName) {
                var part = funnel3d[partName];
                bbox = part.getBBox(true);
                topLeftEdge = {
                    x: Math.min(topLeftEdge.x, bbox.x),
                    y: Math.min(topLeftEdge.y, bbox.y)
                };
                bottomRightEdge = {
                    x: Math.max(bottomRightEdge.x, bbox.x + bbox.width),
                    y: Math.max(bottomRightEdge.y, bbox.y + bbox.height)
                };
            });
            // store for color fillSetter
            funnel3d[sideGroupName].gradientBox = {
                x: topLeftEdge.x,
                width: bottomRightEdge.x - topLeftEdge.x,
                y: topLeftEdge.y,
                height: bottomRightEdge.y - topLeftEdge.y
            };
        });
    },
    zIndexSetter: function () {
        // this.added won't work, because zIndex is set after the prop is set,
        // but before the graphic is really added
        if (this.finishedOnAdd) {
            this.adjustForGradient();
        }
        // run default
        return this.renderer.Element.prototype.zIndexSetter.apply(this, arguments);
    },
    onAdd: function () {
        this.adjustForGradient();
        this.finishedOnAdd = true;
    }
});
RendererProto.elements3d.funnel3d = funnel3dMethods;
RendererProto.funnel3d = function (shapeArgs) {
    var renderer = this, funnel3d = renderer.element3d('funnel3d', shapeArgs), styledMode = renderer.styledMode, 
    // hide stroke for Firefox
    strokeAttrs = {
        'stroke-width': 1,
        stroke: 'none'
    };
    // create groups for sides for oppacity setter
    funnel3d.upperGroup = renderer.g('funnel3d-upper-group').attr({
        zIndex: funnel3d.frontUpper.zIndex
    }).add(funnel3d);
    [
        funnel3d.frontUpper,
        funnel3d.backUpper,
        funnel3d.rightUpper
    ].forEach(function (upperElem) {
        if (!styledMode) {
            upperElem.attr(strokeAttrs);
        }
        upperElem.add(funnel3d.upperGroup);
    });
    funnel3d.lowerGroup = renderer.g('funnel3d-lower-group').attr({
        zIndex: funnel3d.frontLower.zIndex
    }).add(funnel3d);
    [
        funnel3d.frontLower,
        funnel3d.backLower,
        funnel3d.rightLower
    ].forEach(function (lowerElem) {
        if (!styledMode) {
            lowerElem.attr(strokeAttrs);
        }
        lowerElem.add(funnel3d.lowerGroup);
    });
    funnel3d.gradientForSides = shapeArgs.gradientForSides;
    return funnel3d;
};
// eslint-disable-next-line valid-jsdoc
/**
 * Generates paths and zIndexes.
 * @private
 */
RendererProto.funnel3dPath = function (shapeArgs) {
    // Check getCylinderEnd for better error message if
    // the cylinder module is missing
    if (!this.getCylinderEnd) {
        error('A required Highcharts module is missing: cylinder.js', true, charts[this.chartIndex]);
    }
    var renderer = this, chart = charts[renderer.chartIndex], 
    // adjust angles for visible edges
    // based on alpha, selected through visual tests
    alphaCorrection = shapeArgs.alphaCorrection = 90 -
        Math.abs((chart.options.chart.options3d.alpha % 180) - 90), 
    // set zIndexes of parts based on cubiod logic, for consistency
    cuboidData = cuboidPath.call(renderer, H.merge(shapeArgs, {
        depth: shapeArgs.width,
        width: (shapeArgs.width + shapeArgs.bottom.width) / 2
    })), isTopFirst = cuboidData.isTop, isFrontFirst = !cuboidData.isFront, hasMiddle = !!shapeArgs.middle, 
    //
    top = renderer.getCylinderEnd(chart, H.merge(shapeArgs, {
        x: shapeArgs.x - shapeArgs.width / 2,
        z: shapeArgs.z - shapeArgs.width / 2,
        alphaCorrection: alphaCorrection
    })), bottomWidth = shapeArgs.bottom.width, bottomArgs = H.merge(shapeArgs, {
        width: bottomWidth,
        x: shapeArgs.x - bottomWidth / 2,
        z: shapeArgs.z - bottomWidth / 2,
        alphaCorrection: alphaCorrection
    }), bottom = renderer.getCylinderEnd(chart, bottomArgs, true), 
    //
    middleWidth = bottomWidth, middleTopArgs = bottomArgs, middleTop = bottom, middleBottom = bottom, ret, 
    // masking for cylinders or a missing part of a side shape
    useAlphaCorrection;
    if (hasMiddle) {
        middleWidth = shapeArgs.middle.width;
        middleTopArgs = H.merge(shapeArgs, {
            y: shapeArgs.y + shapeArgs.middle.fraction * shapeArgs.height,
            width: middleWidth,
            x: shapeArgs.x - middleWidth / 2,
            z: shapeArgs.z - middleWidth / 2
        });
        middleTop = renderer.getCylinderEnd(chart, middleTopArgs, false);
        middleBottom = renderer.getCylinderEnd(chart, middleTopArgs, false);
    }
    ret = {
        top: top,
        bottom: bottom,
        frontUpper: renderer.getCylinderFront(top, middleTop),
        zIndexes: {
            group: cuboidData.zIndexes.group,
            top: isTopFirst !== 0 ? 0 : 3,
            bottom: isTopFirst !== 1 ? 0 : 3,
            frontUpper: isFrontFirst ? 2 : 1,
            backUpper: isFrontFirst ? 1 : 2,
            rightUpper: isFrontFirst ? 2 : 1
        }
    };
    ret.backUpper = renderer.getCylinderBack(top, middleTop);
    useAlphaCorrection = (Math.min(middleWidth, shapeArgs.width) /
        Math.max(middleWidth, shapeArgs.width)) !== 1;
    ret.rightUpper = renderer.getCylinderFront(renderer.getCylinderEnd(chart, H.merge(shapeArgs, {
        x: shapeArgs.x - shapeArgs.width / 2,
        z: shapeArgs.z - shapeArgs.width / 2,
        alphaCorrection: useAlphaCorrection ? -alphaCorrection : 0
    }), false), renderer.getCylinderEnd(chart, H.merge(middleTopArgs, {
        alphaCorrection: useAlphaCorrection ? -alphaCorrection : 0
    }), !hasMiddle));
    if (hasMiddle) {
        useAlphaCorrection = (Math.min(middleWidth, bottomWidth) /
            Math.max(middleWidth, bottomWidth)) !== 1;
        H.merge(true, ret, {
            frontLower: renderer.getCylinderFront(middleBottom, bottom),
            backLower: renderer.getCylinderBack(middleBottom, bottom),
            rightLower: renderer.getCylinderFront(renderer.getCylinderEnd(chart, H.merge(bottomArgs, {
                alphaCorrection: useAlphaCorrection ?
                    -alphaCorrection : 0
            }), true), renderer.getCylinderEnd(chart, H.merge(middleTopArgs, {
                alphaCorrection: useAlphaCorrection ?
                    -alphaCorrection : 0
            }), false)),
            zIndexes: {
                frontLower: isFrontFirst ? 2 : 1,
                backLower: isFrontFirst ? 1 : 2,
                rightLower: isFrontFirst ? 1 : 2
            }
        });
    }
    return ret;
};