.PIE SET 3D VIEW ANGLE

This subroutine sets the 3D view angle of the "current" pie chart.

Usage:

      PASS         <3D_view_angle>            FIELD            SHARE? N
      GOSUB    0CD .PIE SET 3D VIEW ANGLE
      *        Check for error
      IF       0CD .PIE SET 3D VIEW ANGLE     NE

Description:

This subroutine sets the view angle of the "current" pie chart. This is only applicable if the chart is set to a 3D view (see .PIE SET VIEW).

The <3D_view_angle> value specifies the angle and should be between 0-90 for Standard 3D mode and 0-360 for Shadowed 3D mode (see .PIE SET 3D MODE). Standard 3D charts rotate on the horiztonal axis, so a value of 0 will display the chart "face on", and a value of 90 will display it "edge on". Shadow 3D charts are displayed "face on", and the chart faces the direction indicated by the degrees, eg, 90 will point the chart to the left, 180 will point the chart up, 270 will point the chart to the right and 0 or 360 will point the chart down.

Passing this parameter is optional. If the parameter is not passed or if the value passed is blank, then defaults will be used when rendering the chart.

Comments:

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-- JeanNeron - 2011-09-30