private static float GetDataHig(Axis axis, double value, float totalWidth)
{
if (axis.IsLog())
{
int minIndex = axis.GetLogMinIndex();
float nowIndex = axis.GetLogValue(value);
return((nowIndex - minIndex) / axis.splitNumber * totalWidth);
}
else if (axis.IsCategory())
{
if (axis.boundaryGap)
{
float tick = (float)(totalWidth / (axis.context.minMaxRange + 1));
return(tick / 2 + (float)(value - axis.context.minValue) * tick);
}
else
{
return((float)((value - axis.context.minValue) / axis.context.minMaxRange * totalWidth));
}
}
else
{
return((float)((value - axis.context.minValue) / axis.context.minMaxRange * totalWidth));
}
}
private static float GetAxisPositionInternal(GridCoord grid, Axis axis, float scaleWidth, double value, bool includeGridXY, bool realLength)
{
var isY = axis is YAxis;
var gridHeight = isY ? grid.context.height : grid.context.width;
var gridXY = isY ? grid.context.y : grid.context.x;
if (axis.IsLog())
{
int minIndex = axis.GetLogMinIndex();
float nowIndex = axis.GetLogValue(value);
return(includeGridXY ?
gridXY + (nowIndex - minIndex) / axis.splitNumber * gridHeight :
(nowIndex - minIndex) / axis.splitNumber * gridHeight);
}
else if (axis.IsCategory())
{
var categoryIndex = (int)value;
return(includeGridXY ?
gridXY + (axis.boundaryGap ? scaleWidth / 2 : 0) + scaleWidth * categoryIndex :
(axis.boundaryGap ? scaleWidth / 2 : 0) + scaleWidth * categoryIndex);
}
else
{
var yDataHig = 0f;
if (axis.context.minMaxRange != 0)
{
if (realLength)
{
yDataHig = (float)(value * gridHeight / axis.context.minMaxRange);
}
else
{
yDataHig = (float)((value - axis.context.minValue) / axis.context.minMaxRange * gridHeight);
}
}
return(includeGridXY ?
gridXY + yDataHig :
yDataHig);
}
}
/// <summary>
/// 获得标签显示的名称
/// </summary>
/// <param name="index"></param>
/// <param name="minValue"></param>
/// <param name="maxValue"></param>
/// <param name="dataZoom"></param>
/// <returns></returns>
public static string GetLabelName(Axis axis, float coordinateWidth, int index, double minValue, double maxValue,
DataZoom dataZoom, bool forcePercent)
{
int split = GetSplitNumber(axis, coordinateWidth, dataZoom);
if (axis.type == Axis.AxisType.Value)
{
if (minValue == 0 && maxValue == 0)
{
maxValue = axis.max != 0 ? axis.max : 1;
}
double value = 0;
if (forcePercent)
{
maxValue = 100;
}
value = axis.GetLabelValue(index);
if (axis.inverse)
{
value = -value;
minValue = -minValue;
maxValue = -maxValue;
}
if (forcePercent)
{
return(string.Format("{0}%", (int)value));
}
else
{
return(axis.axisLabel.GetFormatterContent(index, value, minValue, maxValue));
}
}
else if (axis.type == Axis.AxisType.Log)
{
double value = axis.logBaseE ?
System.Math.Exp(axis.GetLogMinIndex() + index) :
System.Math.Pow(axis.logBase, axis.GetLogMinIndex() + index);
if (axis.inverse)
{
value = -value;
minValue = -minValue;
maxValue = -maxValue;
}
return(axis.axisLabel.GetFormatterContent(index, value, minValue, maxValue, true));
}
else if (axis.type == Axis.AxisType.Time)
{
if (minValue == 0 && maxValue == 0)
{
return(string.Empty);
}
if (index > axis.context.labelValueList.Count - 1)
{
return(string.Empty);
}
var value = axis.GetLabelValue(index);
return(axis.axisLabel.GetFormatterDateTime(index, value, minValue, maxValue));
}
var showData = axis.GetDataList(dataZoom);
int dataCount = showData.Count;
if (dataCount <= 0)
{
return("");
}
int rate = axis.boundaryGap ? (dataCount / split) : (dataCount - 1) / split;
if (rate == 0)
{
rate = 1;
}
if (axis.insertDataToHead)
{
if (index > 0)
{
var residue = (dataCount - 1) - split * rate;
var newIndex = residue + (index - 1) * rate;
if (newIndex < 0)
{
newIndex = 0;
}
return(axis.axisLabel.GetFormatterContent(newIndex, showData[newIndex]));
}
else
{
if (axis.boundaryGap && coordinateWidth / dataCount > 5)
{
return(string.Empty);
}
else
{
return(axis.axisLabel.GetFormatterContent(0, showData[0]));
}
}
}
else
{
int newIndex = index * rate;
if (newIndex < dataCount)
{
return(axis.axisLabel.GetFormatterContent(newIndex, showData[newIndex]));
}
else
{
if (axis.boundaryGap && coordinateWidth / dataCount > 5)
{
return(string.Empty);
}
else
{
return(axis.axisLabel.GetFormatterContent(dataCount - 1, showData[dataCount - 1]));
}
}
}
}
