Function prepareLayoutInfo

_benchmarks/sample_echarts.js:67252–67318

(itemModel, symbolSize, layout, symbolRepeat, symbolClip, symbolOffset, symbolPosition, valueLineWidth, boundingLength, repeatCutLength, opt, outputSymbolMeta)

    }

    function prepareLayoutInfo(itemModel, symbolSize, layout, symbolRepeat, symbolClip, symbolOffset, symbolPosition, valueLineWidth, boundingLength, repeatCutLength, opt, outputSymbolMeta) {
      var categoryDim = opt.categoryDim;
      var valueDim = opt.valueDim;
      var pxSign = outputSymbolMeta.pxSign;
      var unitLength = Math.max(symbolSize[valueDim.index] + valueLineWidth, 0);
      var pathLen = unitLength; // Note: rotation will not effect the layout of symbols, because user may
      // want symbols to rotate on its center, which should not be translated
      // when rotating.

      if (symbolRepeat) {
        var absBoundingLength = Math.abs(boundingLength);
        var symbolMargin = retrieve(itemModel.get('symbolMargin'), '15%') + '';
        var hasEndGap = false;

        if (symbolMargin.lastIndexOf('!') === symbolMargin.length - 1) {
          hasEndGap = true;
          symbolMargin = symbolMargin.slice(0, symbolMargin.length - 1);
        }

        var symbolMarginNumeric = parsePercent$1(symbolMargin, symbolSize[valueDim.index]);
        var uLenWithMargin = Math.max(unitLength + symbolMarginNumeric * 2, 0); // When symbol margin is less than 0, margin at both ends will be subtracted
        // to ensure that all of the symbols will not be overflow the given area.

        var endFix = hasEndGap ? 0 : symbolMarginNumeric * 2; // Both final repeatTimes and final symbolMarginNumeric area calculated based on
        // boundingLength.

        var repeatSpecified = isNumeric(symbolRepeat);
        var repeatTimes = repeatSpecified ? symbolRepeat : toIntTimes((absBoundingLength + endFix) / uLenWithMargin); // Adjust calculate margin, to ensure each symbol is displayed
        // entirely in the given layout area.

        var mDiff = absBoundingLength - repeatTimes * unitLength;
        symbolMarginNumeric = mDiff / 2 / (hasEndGap ? repeatTimes : repeatTimes - 1);
        uLenWithMargin = unitLength + symbolMarginNumeric * 2;
        endFix = hasEndGap ? 0 : symbolMarginNumeric * 2; // Update repeatTimes when not all symbol will be shown.

        if (!repeatSpecified && symbolRepeat !== 'fixed') {
          repeatTimes = repeatCutLength ? toIntTimes((Math.abs(repeatCutLength) + endFix) / uLenWithMargin) : 0;
        }

        pathLen = repeatTimes * uLenWithMargin - endFix;
        outputSymbolMeta.repeatTimes = repeatTimes;
        outputSymbolMeta.symbolMargin = symbolMarginNumeric;
      }

      var sizeFix = pxSign * (pathLen / 2);
      var pathPosition = outputSymbolMeta.pathPosition = [];
      pathPosition[categoryDim.index] = layout[categoryDim.wh] / 2;
      pathPosition[valueDim.index] = symbolPosition === 'start' ? sizeFix : symbolPosition === 'end' ? boundingLength - sizeFix : boundingLength / 2; // 'center'

      if (symbolOffset) {
        pathPosition[0] += symbolOffset[0];
        pathPosition[1] += symbolOffset[1];
      }

      var bundlePosition = outputSymbolMeta.bundlePosition = [];
      bundlePosition[categoryDim.index] = layout[categoryDim.xy];
      bundlePosition[valueDim.index] = layout[valueDim.xy];
      var barRectShape = outputSymbolMeta.barRectShape = extend({}, layout);