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Group: Forum Members
Last Active: 6 Months Ago
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Getting or setting a series' FillStyle.MaterialStyle.Shininess property causes all of the bars to appear white, regardless of whether we change the property's value. Is there any way to prevent this behavior? See the following example: Public Class ChartForm
Inherits Windows.Forms.Form
Public Sub New()
Dim series1 As New Nevron.Chart.NBarSeries
series1.BarShape = Nevron.Chart.BarShape.SmoothEdgeBar
series1.HasBottomEdge = False
series1.AddDataPoint(New Nevron.Chart.NDataPoint(3))
series1.AddDataPoint(New Nevron.Chart.NDataPoint(1))
series1.AddDataPoint(New Nevron.Chart.NDataPoint(2))
series1.AddDataPoint(New Nevron.Chart.NDataPoint(5))
series1.AddDataPoint(New Nevron.Chart.NDataPoint(4))
'BUG: Getting or setting a series' FillStyle.MaterialStyle.Shininess property causes all of the bars to appear white, regardless of whether we change the property's value.
' NOTE: If you comment out the following line then the bars appear to have the appropriate color.
Dim currentShininess As Single = series1.FillStyle.MaterialStyle.Shininess
'series1.FillStyle.MaterialStyle.Shininess = series1.FillStyle.MaterialStyle.Shininess
Dim chart As New Nevron.Chart.NCartesianChart
chart.Enable3D = True
chart.Series.Add(series1)
Dim chartControl As New Nevron.Chart.WinForm.NChartControl
chartControl.Charts.Clear()
chartControl.Charts.Add(chart)
chartControl.Dock = DockStyle.Fill
chartControl.Controller.Tools.Clear()
chartControl.Controller.Tools.Add(New Nevron.Chart.Windows.NTrackballTool())
chartControl.Controller.Selection.Clear()
chartControl.Controller.Selection.Add(chart)
Me.Size = New Drawing.Size(800, 600)
Me.StartPosition = FormStartPosition.CenterScreen
Me.Controls.Add(chartControl)
End Sub
End Class
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Group: Forum Members
Last Active: Last Week
Posts: 3,054,
Visits: 4,009
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Hi Lance, The problem in this case is that the MaterialStyle is created on demand with default values. For performance reasons all fill styles material style is initially null. You'll need to initialize the Ambient, Diffuse, Specular and Emissive colors from code if you don't want them to have the initial values (White for Ambient, Diffuse and Specular and Black for Emissive).
Best Regards,
Nevron Support Team
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Group: Forum Members
Last Active: 6 Months Ago
Posts: 60,
Visits: 157
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Thank you for the feedback, but what should I set the Ambient, Diffuse, Specular and Emissive colors to in order to restore the appearance of the chart objects to what they were before the MaterialStyle.Shininess property was accessed?
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Group: Forum Members
Last Active: Last Week
Posts: 3,054,
Visits: 4,009
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Hi Lance, The ambient / diffuse colors must match the color of the fill style. You'll also need to set the specular to white and emissive to black. Hope this helps - let us know if you meet any problems.
Best Regards,
Nevron Support Team
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