protected virtual void UpdatePointerValue(Axis axis)
{
var grid = chart.GetChartComponent <GridCoord>(axis.gridIndex);
if (grid == null)
{
return;
}
if (!grid.context.isPointerEnter)
{
axis.context.pointerValue = double.PositiveInfinity;
}
else
{
var lastPointerValue = axis.context.pointerValue;
if (axis.IsCategory())
{
var dataZoom = chart.GetDataZoomOfAxis(axis);
var dataCount = chart.series.Count > 0 ? chart.series[0].GetDataList(dataZoom).Count : 0;
var local = chart.pointerPos;
if (axis is YAxis)
{
float splitWid = AxisHelper.GetDataWidth(axis, grid.context.height, dataCount, dataZoom);
for (int j = 0; j < axis.GetDataCount(dataZoom); j++)
{
float pY = grid.context.y + j * splitWid;
if ((axis.boundaryGap && (local.y > pY && local.y <= pY + splitWid)) ||
(!axis.boundaryGap && (local.y > pY - splitWid / 2 && local.y <= pY + splitWid / 2)))
{
axis.context.pointerValue = j;
axis.context.pointerLabelPosition = axis.GetLabelObjectPosition(j);
if (j != lastPointerValue)
{
if (chart.onAxisPointerValueChanged != null)
{
chart.onAxisPointerValueChanged(axis, j);
}
}
break;
}
}
}
else
{
float splitWid = AxisHelper.GetDataWidth(axis, grid.context.width, dataCount, dataZoom);
for (int j = 0; j < axis.GetDataCount(dataZoom); j++)
{
float pX = grid.context.x + j * splitWid;
if ((axis.boundaryGap && (local.x > pX && local.x <= pX + splitWid)) ||
(!axis.boundaryGap && (local.x > pX - splitWid / 2 && local.x <= pX + splitWid / 2)))
{
axis.context.pointerValue = j;
axis.context.pointerLabelPosition = axis.GetLabelObjectPosition(j);
if (j != lastPointerValue)
{
if (chart.onAxisPointerValueChanged != null)
{
chart.onAxisPointerValueChanged(axis, j);
}
}
break;
}
}
}
}
else
{
if (axis is YAxis)
{
var yRate = axis.context.minMaxRange / grid.context.height;
var yValue = yRate * (chart.pointerPos.y - grid.context.y - axis.context.offset);
if (axis.context.minValue > 0)
{
yValue += axis.context.minValue;
}
var labelX = axis.GetLabelObjectPosition(0).x;
axis.context.pointerValue = yValue;
axis.context.pointerLabelPosition = new Vector3(labelX, chart.pointerPos.y);
if (yValue != lastPointerValue)
{
if (chart.onAxisPointerValueChanged != null)
{
chart.onAxisPointerValueChanged(axis, yValue);
}
}
}
else
{
var xRate = axis.context.minMaxRange / grid.context.width;
var xValue = xRate * (chart.pointerPos.x - grid.context.x - axis.context.offset);
if (axis.context.minValue > 0)
{
xValue += axis.context.minValue;
}
var labelY = axis.GetLabelObjectPosition(0).y;
axis.context.pointerValue = xValue;
axis.context.pointerLabelPosition = new Vector3(chart.pointerPos.x, labelY);
if (xValue != lastPointerValue)
{
if (chart.onAxisPointerValueChanged != null)
{
chart.onAxisPointerValueChanged(axis, xValue);
}
}
}
}
}
}