dbTransformPointList
dbTransformPointList(
l_points
l_transform
)
=> l_points / nil
Description
Transforms all points in an array in the same way as dbTransformPoint does with a single point. This function does not modify the original array, and returns the transformed array.
Arguments
|
l_points
|
The array of coordinate pairs to be transformed.
|
|
l_transform
|
list(l_offset t_transform [f_scale])
-
A transformation object.
l_offset: list(f_offsetX f_offsetY) -
An offset vector.
t_transform: A transformation name.
Valid values are “R0”, “R90”, “R180”, “R270”, “MX”, “MXR90”, “MY”, and “MYR90”; or, their corresponding symbols such as 'R0, 'R90, 'R180, 'R270, 'MX, 'MXR90, 'MY, and 'MYR90. -
A scale ratio (optional).
f_scale
Default value is 1.0.
|
Value Returned
|
l_points
|
The list of transformed points.
|
|
nil
|
The transformation was not successful.
|
Examples
dbTransformPointList(
list((0:0) (0:1) (0:2) (0:3))
list(0:0 "R90" 1.0)
)
=>
((0.0 0.0)
(-1.0 0.0)
(-2.0 0.0)
(-3.0 0.0))
Related Topics
Shape Transformation Functions
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