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3D Effects dialog to change the rounding to 30%. The cylinder should now resemble

that in Figure 143.

Figure 143: Edge rounding of

10% (a) and 30% (b)

This parameter also has interesting effects when you convert text into a 3D object.

The Scaled Depth parameter sets the size ratio of the front to the back for a 3D

object produced by extrusion. The front side of such an object always protrudes out

from the original surface; the rear side is the original surface of the 2D object (that

is, the 2D exit surface) even if the object has been rotated in the meantime.

By default the scaling is set to 100%, which results in both surfaces being scaled by

the same amount. If you set this scaling to 50% the cylinder becomes a truncated

cone (see Figure 144).

Figure 144: Cylinder with 50% scaling

The diameter of the front side is 50% that of the rear side. It is also possible to create

the reverse effect, with the rear side smaller than the front, by using a scaling depth

greater than 100%.

With rotation bodies this parameter influences the width of the surface parallel to the

axis of rotation. At the end of the rotation the surface width of the figure is given by

the scaling depth. The distance to the rotation axis remains unchanged. In Figure 145

a line is rotated to create a 3D object with a scaling depth figure of 0%.

Figure 145: Scaling depth of a rotation body

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OpenOffice.org OpenOffice - 3.3 Betriebsanweisung Seite 120