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Diffstat (limited to 'noao/nproto/ir/irindices.x')
| -rw-r--r-- | noao/nproto/ir/irindices.x | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/noao/nproto/ir/irindices.x b/noao/nproto/ir/irindices.x new file mode 100644 index 00000000..2ff94d81 --- /dev/null +++ b/noao/nproto/ir/irindices.x @@ -0,0 +1,139 @@ +include "iralign.h" + +# IR_INDICES -- Given the number in the list for a missing subraster and +# information about how the subrasters were written return the i and j +# indices of the specified subrasters. + +procedure ir_indices (num, i, j, nxsub, nysub, corner, raster, order) + +int num # number of the subraster +int i,j # indices of the subraster +int nxsub,nysub # number of subrasters in x and y +int corner # starting corner +int raster # raster order +int order # column or row order + +begin + switch (corner) { + case IR_LL: + if (order == IR_ROW) { + if (mod (num, nxsub) == 0) { + j = num / nxsub + if (raster == YES && mod (j,2) == 0) + i = 1 + else + i = nxsub + } else { + j = num / nxsub + 1 + if (raster == YES && mod (j,2) == 0) + i = nxsub - mod (num, nxsub) + 1 + else + i = mod (num, nxsub) + } + } else if (order == IR_COLUMN) { + if (mod (num, nysub) == 0) { + i = num / nysub + if (raster == YES && mod (i,2) == 0) + j = 1 + else + j = nysub + } else { + i = num / nysub + 1 + if (raster == YES && mod (i,2) == 0) + j = nysub - mod (num, nysub) + 1 + else + j = mod (num, nysub) + } + } + case IR_LR: + if (order == IR_ROW) { + if (mod (num, nxsub) == 0) { + j = num / nxsub + if (raster == YES && mod (j,2) == 0) + i = nxsub + else + i = 1 + } else { + j = num / nxsub + 1 + if (raster == YES && mod (j,2) == 0) + i = mod (num, nxsub) + else + i = nxsub - mod (num, nxsub) + 1 + } + } else if (order == IR_COLUMN) { + if (mod (num, nysub) == 0) { + i = nxsub - num / nysub + 1 + if (raster == YES && mod (i,2) != 0) + j = 1 + else + j = nysub + } else { + i = nxsub - num / nysub + if (raster == YES && mod (i,2) != 0) + j = nysub - mod (num, nysub) + 1 + else + j = mod (num, nysub) + } + } + case IR_UL: + if (order == IR_ROW) { + if (mod (num, nxsub) == 0) { + j = nysub - num / nxsub + 1 + if (raster == YES && mod (j,2) != 0) + i = 1 + else + i = nxsub + } else { + j = nysub - num / nxsub + if (raster == YES && mod (j,2) != 0) + i = nxsub - mod (num, nxsub) + 1 + else + i = mod (num, nxsub) + } + } else if (order == IR_COLUMN) { + if (mod (num, nysub) == 0) { + i = num / nysub + if (raster == YES && mod (i,2) == 0) + j = nysub + else + j = 1 + } else { + i = num / nysub + 1 + if (raster == YES && mod (i,2) == 0) + j = mod (num, nysub) + else + j = nysub - mod (num, nysub) + 1 + } + } + case IR_UR: + if (order == IR_ROW) { + if (mod (num, nxsub) == 0) { + j = nysub - num / nxsub + 1 + if (raster == YES && mod (j,2) != 0) + i = nxsub + else + i = 1 + } else { + j = nysub - num / nxsub + if (raster == YES && mod (j,2) != 0) + i = mod (num, nxsub) + else + i = nxsub - mod (num, nxsub) + 1 + } + } else if (order == IR_COLUMN) { + if (mod (num, nysub) == 0) { + i = nxsub - num / nysub + 1 + if (raster == YES && mod (i,2) != 0) + j = nysub + else + j = 1 + } else { + i = nxsub - num / nysub + if (raster == YES && mod (i,2) != 0) + j = mod (num, nysub) + else + j = nysub - mod (num, nysub) + 1 + } + } + } +end |