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'use strict';

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var parsers = require('../parsers');

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module.exports.definition = {

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    set: function (v) {

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        var valueType = parsers.valueType(v);

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        if (valueType === parsers.TYPES.ANGLE) {

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            return this._setProperty('azimuth', parsers.parseAngle(v));

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        }

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        if (valueType === parsers.TYPES.KEYWORD) {

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            var keywords = v.toLowerCase().trim().split(/\s+/);

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            var hasBehind = false;

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            if (keywords.length > 2) {

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                return;

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            }

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            var behindIndex = keywords.indexOf('behind');

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            hasBehind = (behindIndex !== -1);

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            if (keywords.length === 2) {

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                if (!hasBehind) {

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                    return;

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                }

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                keywords.splice(behindIndex, 1);

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            }

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            if (keywords[0] === 'leftwards' || keywords[0] === 'rightwards') {

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                if (hasBehind) {

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                    return;

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                }

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                return this._setProperty('azimuth', keywords[0]);

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            }

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            if (keywords[0] === 'behind') {

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                return this._setProperty('azimuth', '180deg');

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            }

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            var deg;

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            switch (keywords[0]) {

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            case 'left-side':

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                return this._setProperty('azimuth', '270deg');

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            case 'far-left':

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                return this._setProperty('azimuth', (hasBehind ? 240 : 300) + 'deg');

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            case 'left':

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                return this._setProperty('azimuth', (hasBehind ? 220 : 320) + 'deg');

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            case 'center-left':

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                return this._setProperty('azimuth', (hasBehind ? 200 : 340) + 'deg');

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            case 'center':

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                return this._setProperty('azimuth', (hasBehind ? 180 : 0) + 'deg');

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            case 'center-right':

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                return this._setProperty('azimuth', (hasBehind ? 160 : 20) + 'deg');

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            case 'right':

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                return this._setProperty('azimuth', (hasBehind ? 140 : 40) + 'deg');

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            case 'far-right':

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                return this._setProperty('azimuth', (hasBehind ? 120 : 60) + 'deg');

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            case 'right-side':

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                return this._setProperty('azimuth', '90deg');

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            default:

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                return;

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            }

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        }

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    },

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    get: function () {

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        return this.getPropertyValue('azimuth');

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    },

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    enumerable: true,

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    configurable: true

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};

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