    /**
     * Bullet charts
     */
    $.fn.sparkline.bullet = bullet = createClass($.fn.sparkline._base, {
        type: 'bullet',

        init: function (el, values, options, width, height) {
            var min, max, vals;
            bullet._super.init.call(this, el, values, options, width, height);

            // values: target, performance, range1, range2, range3
            this.values = values = normalizeValues(values);
            // target or performance could be null
            vals = values.slice();
            vals[0] = vals[0] === null ? vals[2] : vals[0];
            vals[1] = values[1] === null ? vals[2] : vals[1];
            min = Math.min.apply(Math, values);
            max = Math.max.apply(Math, values);
            if (options.get('base') === undefined) {
                min = min < 0 ? min : 0;
            } else {
                min = options.get('base');
            }
            this.min = min;
            this.max = max;
            this.range = max - min;
            this.shapes = {};
            this.valueShapes = {};
            this.regiondata = {};
            this.width = width = options.get('width') === 'auto' ? '4.0em' : width;
            this.target = this.$el.simpledraw(width, height, options.get('composite'));
            if (!values.length) {
                this.disabled = true;
            }
            this.initTarget();
        },

        getRegion: function (el, x, y) {
            var shapeid = this.target.getShapeAt(el, x, y);
            return (shapeid !== undefined && this.shapes[shapeid] !== undefined) ? this.shapes[shapeid] : undefined;
        },

        getCurrentRegionFields: function () {
            var currentRegion = this.currentRegion;
            return {
                fieldkey: currentRegion.substr(0, 1),
                value: this.values[currentRegion.substr(1)],
                region: currentRegion
            };
        },

        changeHighlight: function (highlight) {
            var currentRegion = this.currentRegion,
                shapeid = this.valueShapes[currentRegion],
                shape;
            delete this.shapes[shapeid];
            switch (currentRegion.substr(0, 1)) {
                case 'r':
                    shape = this.renderRange(currentRegion.substr(1), highlight);
                    break;
                case 'p':
                    shape = this.renderPerformance(highlight);
                    break;
                case 't':
                    shape = this.renderTarget(highlight);
                    break;
            }
            this.valueShapes[currentRegion] = shape.id;
            this.shapes[shape.id] = currentRegion;
            this.target.replaceWithShape(shapeid, shape);
        },

        renderRange: function (rn, highlight) {
            var rangeval = this.values[rn],
                rangewidth = Math.round(this.canvasWidth * ((rangeval - this.min) / this.range)),
                color = this.options.get('rangeColors')[rn - 2];
            if (highlight) {
                color = this.calcHighlightColor(color, this.options);
            }
            return this.target.drawRect(0, 0, rangewidth - 1, this.canvasHeight - 1, color, color);
        },

        renderPerformance: function (highlight) {
            var perfval = this.values[1],
                perfwidth = Math.round(this.canvasWidth * ((perfval - this.min) / this.range)),
                color = this.options.get('performanceColor');
            if (highlight) {
                color = this.calcHighlightColor(color, this.options);
            }
            return this.target.drawRect(0, Math.round(this.canvasHeight * 0.3), perfwidth - 1,
                Math.round(this.canvasHeight * 0.4) - 1, color, color);
        },

        renderTarget: function (highlight) {
            var targetval = this.values[0],
                x = Math.round(this.canvasWidth * ((targetval - this.min) / this.range) - (this.options.get('targetWidth') / 2)),
                targettop = Math.round(this.canvasHeight * 0.10),
                targetheight = this.canvasHeight - (targettop * 2),
                color = this.options.get('targetColor');
            if (highlight) {
                color = this.calcHighlightColor(color, this.options);
            }
            return this.target.drawRect(x, targettop, this.options.get('targetWidth') - 1, targetheight - 1, color, color);
        },

        render: function () {
            var vlen = this.values.length,
                target = this.target,
                i, shape;
            if (!bullet._super.render.call(this)) {
                return;
            }
            for (i = 2; i < vlen; i++) {
                shape = this.renderRange(i).append();
                this.shapes[shape.id] = 'r' + i;
                this.valueShapes['r' + i] = shape.id;
            }
            if (this.values[1] !== null) {
                shape = this.renderPerformance().append();
                this.shapes[shape.id] = 'p1';
                this.valueShapes.p1 = shape.id;
            }
            if (this.values[0] !== null) {
                shape = this.renderTarget().append();
                this.shapes[shape.id] = 't0';
                this.valueShapes.t0 = shape.id;
            }
            target.render();
        }
    });
