DrawPolygon Method

Draws a polygon on the chart. The points for the polygon are specified in arrays containing the X and Y values that describe the segments of the polygon. Uses the current settings of the Border and Interior properties to determine the properties of the new polygon.

expression.DrawPolygon(xValues, yValues)

*expression   * Required. An expression that returns a ChChartDraw object.

xValues   Required Variant. An array containing the X values used to calculate the polygon.

yValues   Required Variant. An array containing the Y values used to calculate the polygon.

Example

This example uses the BeforeRender event to cancel rendering the chart title and the AfterRender event to replace the chart title with a polygon.

Private Sub ChartSpace1_BeforeRender(chartObject,Cancel)

    If TypeName(chartObject) = "ChTitle" Then
            Cancel.Value = True
    End If

End Sub

Sub ChartSpace1_AfterRender(drawObject, chartObject)

    Dim alXValues(9)
    Dim alYValues(9)
    Dim chConstants
    Dim iCutoff

    iCutoff = 20

    Set chConstants = ChartSpace1.Constants

    If TypeName(chartObject) = "ChTitle" Then

        ' Set the array containing the x values for
        ' the line.
        alXValues(0) = chartObject.Left + iCutoff
        alXValues(1) = chartObject.Right - iCutoff
        alXValues(2) = chartObject.Right
        alXValues(3) = chartObject.Right
        alXValues(4) = chartObject.Right - iCutoff
        alXValues(5) = chartObject.Left + iCutoff
        alXValues(6) = chartObject.Left
        alXValues(7) = chartObject.Left
        alXValues(8) = chartObject.Left + iCutoff

        ' Set the array containing the y values for
        ' the line.
        alYValues(0) = chartObject.Top
        alYValues(1) = chartObject.Top
        alYValues(2) = chartObject.Top + iCutoff
        alYValues(3) = chartObject.Bottom - iCutoff
        alYValues(4) = chartObject.Bottom
        alYValues(5) = chartObject.Bottom
        alYValues(6) = chartObject.Bottom - iCutoff
        alYValues(7) = chartObject.Top + iCutoff
        alYValues(8) = chartObject.Top

        ' Set the properties for the polygon.
        drawObject.Interior.SetTwoColorGradient chConstants.chGradientFromCenter, _
                                  chConstants.chGradientVariantStart, "Red", "Green"

        ' Draw the polygon.
        drawObject.DrawPolygon alXValues, alYValues

    End If

End Sub

Applies to | ChChartDraw Object