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Bill Lorensen authored
ChartPie's tooltip is formatted in vtkChartPie::LocatePointInPlot. This method relies on PlotPie:::GetNearestPoint, but the plotpos vector was not being computed by GetNearestPoint. Consequently, the tooltip always reported a 0 value for the dependent variable. In this patch, PlotPie:::GetNearestPoint computes the dependent variable and return it in plotpos[1]. In addition, plotpos returns the independent vaiable in plotpos[0]. ChartPie now uses plotPos.GetY() to obtain the dependent variable. This seems consistent with other charts. To reproduce the problem (before the patch) and verify (after the patch) run: vtkChartsCoreCxxTests "TestPieChart" -I and move the mouse of each pie chart segment. Change-Id: I5c3d56a79c3ceca6616bae2b0a7a85f9c15f2293
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