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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include "im2interpdef.h"
include <math/iminterp.h>
# MSIVECTOR -- Procedure to evaluate the interpolant at an array of arbitrarily
# spaced points. The routines assume that 1 <= x <= nxpix and 1 <= y <= nypix.
# Checking for out of bounds pixels is the responsibility of the calling
# program.
procedure msivector (msi, x, y, zfit, npts)
pointer msi # pointer to the interpolant descriptor structure
real x[ARB] # array of x values
real y[ARB] # array of y values
real zfit[npts] # array of interpolated values
int npts # number of points to be evaluated
begin
switch (MSI_TYPE(msi)) {
case II_BINEAREST:
call ii_binearest (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts)
case II_BILINEAR:
call ii_bilinear (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts)
case II_BIPOLY3:
call ii_bipoly3 (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts)
case II_BIPOLY5:
call ii_bipoly5 (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts)
case II_BISPLINE3:
call ii_bispline3 (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts)
case II_BISINC:
call ii_bisinc (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), MSI_NYCOEFF(msi), x, y, zfit, npts,
MSI_NSINC(msi), DX, DY)
case II_BILSINC:
call ii_bilsinc (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), MSI_NYCOEFF(msi), x, y, zfit, npts,
LTABLE(MSI_LTABLE(msi)), 2 * MSI_NSINC(msi) + 1,
MSI_NXINCR(msi), MSI_NYINCR(msi), DX, DY)
case II_BIDRIZZLE:
if (MSI_XPIXFRAC(msi) >= 1.0 && MSI_YPIXFRAC(msi) >= 1.0)
call ii_bidriz1 (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts, MSI_BADVAL(msi))
#else if (MSI_XPIXFRAC(msi) <= 0.0 && MSI_YPIXFRAC(msi) <= 0.0)
#call ii_bidriz0 (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
#MSI_NXCOEFF(msi), x, y, zfit, npts, MSI_BADVAL(msi))
else
call ii_bidriz (COEFF(MSI_COEFF(msi)), MSI_FSTPNT(msi),
MSI_NXCOEFF(msi), x, y, zfit, npts, MSI_XPIXFRAC(msi),
MSI_YPIXFRAC(msi), MSI_BADVAL(msi))
}
end
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