EYE PERSPECT [Control]

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EYE PERSPECT [Control]

This command allows the user to apply perspective to the model. Perspective remains active until it is switched off, or the perspective factor is set to zero.

	Control	Comments
	[FACTOR] Factor	A factor between 0 and 3 may be entered to control the amount of
		perspective that will be applied (see note 1). Z-plane clipping at Z=0.0
		in the plane of the viewport will be activated.
	OFF	Switches perspective off. Also switches off Z-plane clipping.

Notes:

1.: Controlling the Position of the Vanishing Point
The vanishing point is at a position behind the centre of the viewport at a distance controlled by the perspective factor such that the greater the factor the greater the perspective distortion.

**Figure 2.62:** Perspective
$\begin{figure} \centerline{ \psfig {figure=diagrams/chap2.eye_pers.fig,width=4in} }\end{figure}$

Examples:

1.: EYE PERSPECT
Applies the default perspective to the model.
2.: EYE PERSPECT FACTOR 2
Applies a perspective of factor 2 to the model.
3.: EYE PERSPECT OFF
Removes perspective from the model.

Next: EYE ROTATE Control Arguments Up: Primary Command EYE Previous: EYE NORMAL

Femsys Limited
1st October 1999