Texas Instruments Voyage 200, Руководство пользователя

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3D Graphing 386
How the Viewing Angle Is Measured How the Viewing Angle Is Measured How the Viewing Angle Is Measured How the Viewing Angle Is Measured
Note:
When
eye
ψ
=0
, the z axis is vertical on the screen. When
eye
ψ
=90
, the z axis is
rotated 90
¡
counterclockwise and is horizontal.
In the Window Editor (
8 $
), always enter
eye q
,
eye f
, and
eye
ψ
in degrees,
regardless of the current angle mode.
The viewing angle has three components:
•
eye
q
— angle in degrees from the
positive x axis.
•
eye f
— angle in degrees from the
positive z axis.
•
eye
ψ
— angle in degrees by which the
graph is rotated counter-clockwise
around the line of sight set by
eye
q
and
eye
f
.
Y
Z
X
eye q
eye f
eye
Do not enter a ¡ symbol. For
example, type 20, 70, and
0, not 20
¡
, 70
¡
and 0
¡
.