Method updateElements

src/controllers/controller.doughnut.js:253–291

(arcs, start, count, mode)

  }

  updateElements(arcs, start, count, mode) {
    const reset = mode === 'reset';
    const chart = this.chart;
    const chartArea = chart.chartArea;
    const opts = chart.options;
    const animationOpts = opts.animation;
    const centerX = (chartArea.left + chartArea.right) / 2;
    const centerY = (chartArea.top + chartArea.bottom) / 2;
    const animateScale = reset && animationOpts.animateScale;
    const innerRadius = animateScale ? 0 : this.innerRadius;
    const outerRadius = animateScale ? 0 : this.outerRadius;
    const {sharedOptions, includeOptions} = this._getSharedOptions(start, mode);
    let startAngle = this._getRotation();
    let i;

    for (i = 0; i < start; ++i) {
      startAngle += this._circumference(i, reset);
    }

    for (i = start; i < start + count; ++i) {
      const circumference = this._circumference(i, reset);
      const arc = arcs[i];
      const properties = {
        x: centerX + this.offsetX,
        y: centerY + this.offsetY,
        startAngle,
        endAngle: startAngle + circumference,
        circumference,
        outerRadius,
        innerRadius
      };
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, arc.active ? 'active' : mode);
      }
      startAngle += circumference;

      this.updateElement(arc, i, properties, mode);
    }
  }

  calculateTotal() {
    const meta = this._cachedMeta;