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include <imhdr.h>
include <imset.h>
$for (silrdx)
# FIXLINE -- Linearly interpolate lines across a region.
procedure fixline$t (image, x1, x2, y1, y2)
pointer image # Image pointer
int x1, x2, y1, y2 # Region to be fixed
int i, nx, ny
$if (datatype == x)
complex f1, f2
$else $if (datatype == d)
double f1, f2
$else
real f1, f2
$endif $endif
pointer a, b, c
pointer imgs2$t(), imps2$t()
begin
c = imps2$t (image, x1, x2, y1, y2)
nx = x2 - x1 + 1
ny = y2 - y1 + 1
if (y1 == 1) {
a = imgs2$t (image, x1, x2, y2 + 1, y2 + 1)
do i = 1, ny
call amov$t (Mem$t[a], Mem$t[c + (i - 1) * nx], nx)
} else if (y2 == IM_LEN (image, 2)) {
a = imgs2$t (image, x1, x2, y1 - 1, y1 - 1)
do i = 1, ny
call amov$t (Mem$t[a], Mem$t[c + (i - 1) * nx], nx)
} else {
call imseti (image, IM_NBUFS, 2)
a = imgs2$t (image, x1, x2, y1 - 1, y1 - 1)
b = imgs2$t (image, x1, x2, y2 + 1, y2 + 1)
do i = 1, ny {
f2 = i / (ny + 1.)
f1 = 1 - f2
call awsu$t (Mem$t[a], Mem$t[b], Mem$t[c+(i-1)*nx], nx, f1, f2)
}
}
end
$endfor
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