Game Development Reference
In-Depth Information
Figure 4.9
The Cartesian coordinate system makes it possible to map a domain to a range.
Table 4.1
Quadrant Characteristics
Quadrant
Values
Discussion
I
(
1
,
1
)
Both x and y are positive. In other words, both the domain and
range values are positive.
II
(
,
)
The value of y is positive, but the value of x becomes negative. In
other words, the domain values become negative while the range
values remain positive.
2
1
III
(
,
)
The value of x is negative, as is the value of y. In this instance, both
the domain and the range become negative.
2
2
IV
(
1
,
2
)
The value of x is positive, but the value of y becomes negative. In
this instance, the domain is positive, and the range is negative.
