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A Library for Handling
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Description:
This
function returns the upper and lower limits of a box which just encompasses the
supplied
Region. The limits are returned as axis values within the
Frame represented by
the Region. The value of the
Negated attribute is ignored (i.e. it is assumed that the
Region has not been negated).
Synopsis
void astGetRegionBounds( AstRegion
$\ast $this, double
$\ast $lbnd,
double $\ast $ubnd
)
Parameters:
this
Pointer to the Region.
lbnd
Pointer to an array in which
to return the lower axis bounds covered by the Region. It should have at least as many
elements as there are axes in the Region. If an axis has no lower limit, the returned
value will be the largest possible negative value.
ubnd
Pointer to an array in
which to return the upper axis bounds covered by the Region. It should have at least as
many elements as there are axes in the Region. If an axis has no upper limit,
the returned value will be the largest possible positive value.
Notes:

The value of the Negated attribute is ignored (i.e. it is assumed that the Region has
not been negated).

If an axis has no extent on an axis then the lower limit will be returned larger than
the upper limit. Note, this is different to an axis which has a constant value (in
which case both lower and upper limit will be returned set to the constant
value).

If the bounds on an axis cannot be determined, AST__BAD is returned for both upper and
lower bounds
Copyright (C) 2021 East Asian Observatory
 ←Prev
 AST
A Library for Handling
World
Coordinate Systems
in Astronomy  Next→
 TOC ↑