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0001-patch-for-n66-dskx02.c.patch
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0001-patch-for-n66-dskx02.c.patch
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From 287a188f31af1dbd923db4143c3fcf3bb0227e2c Mon Sep 17 00:00:00 2001
From: Andrew Annex <ama6fy@virginia.edu>
Date: Sun, 11 Apr 2021 14:41:16 -0400
Subject: [PATCH 1/2] patch for n66 dskx02.c
---
cspice/src/cspice/dskx02.c | 180 ++++++++++++++++++++++++-------------
1 file changed, 118 insertions(+), 62 deletions(-)
diff --git a/cspice/src/cspice/dskx02.c b/cspice/src/cspice/dskx02.c
index d3a0d98..e1ebba3 100644
--- a/cspice/src/cspice/dskx02.c
+++ b/cspice/src/cspice/dskx02.c
@@ -133,6 +133,7 @@ static integer c__0 = 0;
extern /* Subroutine */ int insang_(doublereal *, doublereal *,
doublereal *, doublereal *, logical *, doublereal *), pltnrm_(
doublereal *, doublereal *, doublereal *, doublereal *);
+ doublereal xpt2[3];
/* $ Abstract */
@@ -1315,6 +1316,16 @@ static integer c__0 = 0;
/* $ Version */
+/* - SPICELIB Version 1.1.0 28-JUL-2017 (NJB) */
+
+/* Bug fix: in some cases the previous version of */
+/* this routine could still return an intercept outside */
+/* of the segment boundaries by more than the allowed */
+/* margin. In those cases, the returned plate ID was */
+/* invalid. Both problems have been corrected. */
+
+/* See $Revisions for details. */
+
/* - SPICELIB Version 1.0.0 04-APR-2017 (NJB) */
/* Added test for containment of intersection point */
@@ -1474,6 +1485,46 @@ static integer c__0 = 0;
/* -& */
/* $ Revisions */
+/* - SPICELIB Version 1.1.0 28-JUL-2017 (NJB) */
+
+/* Bug fix: in some cases the previous version of this routine */
+/* could return an intercept outside of the segment boundaries */
+/* (the "outside intercept") by more than the allowed margin. In */
+/* those cases, the returned plate ID was invalid. */
+
+/* Both problems have been corrected. */
+
+/* Description of the bug */
+/* ---------------------- */
+
+/* In the case where all of the follow conditions hold: */
+
+/* - the input ray's intercepts exist both within and */
+/* outside the segment's boundaries */
+
+/* - the outside intercept is considered the nearest */
+/* solution to the vertex at the time the intercept */
+/* is found */
+
+/* - the intercept that should have been selected was found */
+/* before the outside intercept */
+
+/* the outside intercept will overwrite the correct intercept. */
+
+/* In the situation described above, the plate ID returned */
+/* will not be that of the outside plate. */
+
+/* Solution */
+/* -------- */
+
+/* Each intercept that passes the test for being closest, of */
+/* all intercepts seen so far, to the ray's vertex is stored */
+/* in a temporary variable. The output XPT is updated only */
+/* when the intercept is found to lie within the segment's */
+/* coordinate bounds, or outside the bounds by no more than */
+/* the allowed margin. */
+
+
/* - 10-SEP-2014 (NJB) */
/* Bug fix: during an intercept search over the voxel list */
@@ -1651,9 +1702,9 @@ static integer c__0 = 0;
}
for (i__ = 1; i__ <= 3; ++i__) {
grdext[(i__1 = i__ - 1) < 3 && 0 <= i__1 ? i__1 : s_rnge("grdext",
- i__1, "dskx02_", (ftnlen)1026)] = vgrext[(i__2 = i__ - 1)
+ i__1, "dskx02_", (ftnlen)1077)] = vgrext[(i__2 = i__ - 1)
< 3 && 0 <= i__2 ? i__2 : s_rnge("vgrext", i__2, "dskx0"
- "2_", (ftnlen)1026)] * voxsiz;
+ "2_", (ftnlen)1077)] * voxsiz;
}
/* Set the margin used for checking whether the ray's vertex */
@@ -1678,9 +1729,9 @@ static integer c__0 = 0;
for (i__ = 1; i__ <= 3; ++i__) {
cgrext[(i__1 = i__ - 1) < 3 && 0 <= i__1 ? i__1 : s_rnge("cgrext",
- i__1, "dskx02_", (ftnlen)1053)] = vgrext[(i__2 = i__ - 1)
+ i__1, "dskx02_", (ftnlen)1104)] = vgrext[(i__2 = i__ - 1)
< 3 && 0 <= i__2 ? i__2 : s_rnge("vgrext", i__2, "dskx0"
- "2_", (ftnlen)1053)] / cgscal;
+ "2_", (ftnlen)1104)] / cgscal;
}
cgscl2 = cgscal * cgscal;
/* Computing 3rd power */
@@ -1789,14 +1840,14 @@ static integer c__0 = 0;
for (j = 1; j <= 3; ++j) {
cgxyz[(i__2 = j - 1) < 3 && 0 <= i__2 ? i__2 : s_rnge("cgxyz",
- i__2, "dskx02_", (ftnlen)1189)] = (voxlst[(i__3 = j + i__
+ i__2, "dskx02_", (ftnlen)1240)] = (voxlst[(i__3 = j + i__
* 3 - 4) < 150000 && 0 <= i__3 ? i__3 : s_rnge("voxlst",
- i__3, "dskx02_", (ftnlen)1189)] - 1) / cgscal + 1;
+ i__3, "dskx02_", (ftnlen)1240)] - 1) / cgscal + 1;
}
cvid = cgxyz[0] + cgrext[0] * (cgxyz[1] + cgxyz[2] * cgrext[1] - (
cgrext[1] + 1));
if (cgrptr[(i__2 = cvid - 1) < 100000 && 0 <= i__2 ? i__2 : s_rnge(
- "cgrptr", i__2, "dskx02_", (ftnlen)1196)] > 0) {
+ "cgrptr", i__2, "dskx02_", (ftnlen)1247)] > 0) {
/* This coarse voxel is non-empty; add the index of the */
/* current voxel to the output list. Save the coordinates of */
@@ -1804,20 +1855,20 @@ static integer c__0 = 0;
++to;
vxlout[(i__2 = to - 1) < 50000 && 0 <= i__2 ? i__2 : s_rnge("vxl"
- "out", i__2, "dskx02_", (ftnlen)1203)] = i__;
+ "out", i__2, "dskx02_", (ftnlen)1254)] = i__;
for (j = 1; j <= 3; ++j) {
vxlcg[(i__2 = j + to * 3 - 4) < 150000 && 0 <= i__2 ? i__2 :
- s_rnge("vxlcg", i__2, "dskx02_", (ftnlen)1206)] =
+ s_rnge("vxlcg", i__2, "dskx02_", (ftnlen)1257)] =
cgxyz[(i__3 = j - 1) < 3 && 0 <= i__3 ? i__3 : s_rnge(
- "cgxyz", i__3, "dskx02_", (ftnlen)1206)];
+ "cgxyz", i__3, "dskx02_", (ftnlen)1257)];
}
/* Save the coarse voxel start pointer as well. */
vxlstr[(i__2 = to - 1) < 50000 && 0 <= i__2 ? i__2 : s_rnge("vxl"
- "str", i__2, "dskx02_", (ftnlen)1211)] = cgrptr[(i__3 =
+ "str", i__2, "dskx02_", (ftnlen)1262)] = cgrptr[(i__3 =
cvid - 1) < 100000 && 0 <= i__3 ? i__3 : s_rnge("cgrptr",
- i__3, "dskx02_", (ftnlen)1211)];
+ i__3, "dskx02_", (ftnlen)1262)];
}
}
@@ -1870,26 +1921,26 @@ static integer c__0 = 0;
/* the base of its parent coarse voxel. */
j = vxlout[(i__2 = vi - 1) < 50000 && 0 <= i__2 ? i__2 : s_rnge(
- "vxlout", i__2, "dskx02_", (ftnlen)1274)];
+ "vxlout", i__2, "dskx02_", (ftnlen)1325)];
fx = voxlst[(i__2 = j * 3 - 3) < 150000 && 0 <= i__2 ? i__2 :
- s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1276)] - cgscal
+ s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1327)] - cgscal
* (vxlcg[(i__3 = vi * 3 - 3) < 150000 && 0 <= i__3 ? i__3
- : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1276)] - 1);
+ : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1327)] - 1);
fy = voxlst[(i__2 = j * 3 - 2) < 150000 && 0 <= i__2 ? i__2 :
- s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1277)] - cgscal
+ s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1328)] - cgscal
* (vxlcg[(i__3 = vi * 3 - 2) < 150000 && 0 <= i__3 ? i__3
- : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1277)] - 1);
+ : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1328)] - 1);
fz = voxlst[(i__2 = j * 3 - 1) < 150000 && 0 <= i__2 ? i__2 :
- s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1278)] - cgscal
+ s_rnge("voxlst", i__2, "dskx02_", (ftnlen)1329)] - cgscal
* (vxlcg[(i__3 = vi * 3 - 1) < 150000 && 0 <= i__3 ? i__3
- : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1278)] - 1);
+ : s_rnge("vxlcg", i__3, "dskx02_", (ftnlen)1329)] - 1);
offset = fx + cgscal * (fy - 1) + cgscl2 * (fz - 1);
/* Now compute the index of voxel-plate list pointer in */
/* the pointer array, and look up the pointer. */
j = vxlstr[(i__2 = vi - 1) < 50000 && 0 <= i__2 ? i__2 : s_rnge(
- "vxlstr", i__2, "dskx02_", (ftnlen)1286)] + offset - 1;
+ "vxlstr", i__2, "dskx02_", (ftnlen)1337)] + offset - 1;
dski02_(handle, dladsc, &c__10, &j, &c__1, &dim, &voxptr);
if (failed_()) {
chkout_("DSKX02", (ftnlen)6);
@@ -1917,7 +1968,7 @@ static integer c__0 = 0;
dski02_(handle, dladsc, &c__11, &i__3, &nplate, &dim, &
platid[(i__2 = pntr - 1) < 256000 && 0 <= i__2 ?
i__2 : s_rnge("platid", i__2, "dskx02_", (ftnlen)
- 1320)]);
+ 1371)]);
if (failed_()) {
chkout_("DSKX02", (ftnlen)6);
return 0;
@@ -1941,7 +1992,7 @@ static integer c__0 = 0;
filli_(&vi, &nplate, &source[(i__2 = pntr - 1) < 256000 && 0
<= i__2 ? i__2 : s_rnge("source", i__2, "dskx02_", (
- ftnlen)1349)]);
+ ftnlen)1400)]);
}
/* NPLATE returns zero or greater. */
@@ -1981,13 +2032,13 @@ static integer c__0 = 0;
/* ID at index I-1 may have been "marked" via negation. */
if (platid[(i__3 = ordvec[(i__2 = i__ - 1) < 256000 && 0 <= i__2 ?
- i__2 : s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1393)]
+ i__2 : s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1444)]
- 1) < 256000 && 0 <= i__3 ? i__3 : s_rnge("platid", i__3,
- "dskx02_", (ftnlen)1393)] == (i__6 = platid[(i__5 =
+ "dskx02_", (ftnlen)1444)] == (i__6 = platid[(i__5 =
ordvec[(i__4 = i__ - 2) < 256000 && 0 <= i__4 ? i__4 :
- s_rnge("ordvec", i__4, "dskx02_", (ftnlen)1393)] - 1) <
+ s_rnge("ordvec", i__4, "dskx02_", (ftnlen)1444)] - 1) <
256000 && 0 <= i__5 ? i__5 : s_rnge("platid", i__5, "dsk"
- "x02_", (ftnlen)1393)], abs(i__6))) {
+ "x02_", (ftnlen)1444)], abs(i__6))) {
/* The plates having indices ORDVEC(I-1) and ORDVEC(I) are */
/* duplicates. */
@@ -2001,7 +2052,7 @@ static integer c__0 = 0;
/* index ORDVEC(I). */
if (ordvec[(i__2 = i__ - 1) < 256000 && 0 <= i__2 ? i__2 :
- s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1407)] <
+ s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1458)] <
minidx) {
/* The plate that was previously at the minimum index is */
@@ -2009,26 +2060,26 @@ static integer c__0 = 0;
/* the current plate ID value is ORDVEC(I). */
platid[(i__2 = minidx - 1) < 256000 && 0 <= i__2 ? i__2 :
- s_rnge("platid", i__2, "dskx02_", (ftnlen)1413)] =
+ s_rnge("platid", i__2, "dskx02_", (ftnlen)1464)] =
-platid[(i__3 = minidx - 1) < 256000 && 0 <=
i__3 ? i__3 : s_rnge("platid", i__3, "dskx02_", (
- ftnlen)1413)];
+ ftnlen)1464)];
minidx = ordvec[(i__2 = i__ - 1) < 256000 && 0 <= i__2 ?
i__2 : s_rnge("ordvec", i__2, "dskx02_", (ftnlen)
- 1414)];
+ 1465)];
} else {
/* The current plate is a duplicate; mark it. */
platid[(i__3 = ordvec[(i__2 = i__ - 1) < 256000 && 0 <=
i__2 ? i__2 : s_rnge("ordvec", i__2, "dskx02_", (
- ftnlen)1420)] - 1) < 256000 && 0 <= i__3 ? i__3 :
- s_rnge("platid", i__3, "dskx02_", (ftnlen)1420)] =
+ ftnlen)1471)] - 1) < 256000 && 0 <= i__3 ? i__3 :
+ s_rnge("platid", i__3, "dskx02_", (ftnlen)1471)] =
-platid[(i__5 = ordvec[(i__4 = i__ - 1) < 256000
&& 0 <= i__4 ? i__4 : s_rnge("ordvec", i__4,
- "dskx02_", (ftnlen)1420)] - 1) < 256000 && 0 <=
+ "dskx02_", (ftnlen)1471)] - 1) < 256000 && 0 <=
i__5 ? i__5 : s_rnge("platid", i__5, "dskx02_", (
- ftnlen)1420)];
+ ftnlen)1471)];
}
} else {
@@ -2036,7 +2087,7 @@ static integer c__0 = 0;
/* ID has no duplicates. */
minidx = ordvec[(i__2 = i__ - 1) < 256000 && 0 <= i__2 ? i__2
- : s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1429)];
+ : s_rnge("ordvec", i__2, "dskx02_", (ftnlen)1480)];
}
}
@@ -2061,7 +2112,7 @@ static integer c__0 = 0;
/* Retrieve the current plate ID. */
j = platid[(i__1 = i__ - 1) < 256000 && 0 <= i__1 ? i__1 : s_rnge(
- "platid", i__1, "dskx02_", (ftnlen)1459)];
+ "platid", i__1, "dskx02_", (ftnlen)1510)];
if (j > 0) {
/* This is not a duplicate plate; consider it. */
@@ -2073,7 +2124,7 @@ static integer c__0 = 0;
/* later voxel. */
if (source[(i__1 = i__ - 1) < 256000 && 0 <= i__1 ? i__1 :
- s_rnge("source", i__1, "dskx02_", (ftnlen)1472)]
+ s_rnge("source", i__1, "dskx02_", (ftnlen)1523)]
> final) {
/* This is a "late plate": it occurs in a voxel later */
@@ -2102,16 +2153,16 @@ static integer c__0 = 0;
vloc = isrchi_(&vids[(i__1 = k - 1) < 3 && 0 <= i__1 ?
i__1 : s_rnge("vids", i__1, "dskx02_", (
- ftnlen)1506)], &nvbuf, vidxs);
+ ftnlen)1557)], &nvbuf, vidxs);
if (vloc > 0) {
/* The vertex was buffered; just copy it. */
vequ_(&vbuff[(i__1 = vloc * 3 - 3) < 600 && 0 <=
i__1 ? i__1 : s_rnge("vbuff", i__1, "dsk"
- "x02_", (ftnlen)1512)], &points[(i__2 = k *
+ "x02_", (ftnlen)1563)], &points[(i__2 = k *
3 - 3) < 9 && 0 <= i__2 ? i__2 : s_rnge(
- "points", i__2, "dskx02_", (ftnlen)1512)])
+ "points", i__2, "dskx02_", (ftnlen)1563)])
;
} else {
@@ -2119,11 +2170,11 @@ static integer c__0 = 0;
start = (vids[(i__1 = k - 1) < 3 && 0 <= i__1 ?
i__1 : s_rnge("vids", i__1, "dskx02_", (
- ftnlen)1518)] - 1) * 3 + 1;
+ ftnlen)1569)] - 1) * 3 + 1;
dskd02_(handle, dladsc, &c__19, &start, &c__3, &
dim, &points[(i__1 = k * 3 - 3) < 9 && 0
<= i__1 ? i__1 : s_rnge("points", i__1,
- "dskx02_", (ftnlen)1520)]);
+ "dskx02_", (ftnlen)1571)]);
if (failed_()) {
chkout_("DSKX02", (ftnlen)6);
return 0;
@@ -2135,15 +2186,15 @@ static integer c__0 = 0;
++nvbuf;
vequ_(&points[(i__1 = k * 3 - 3) < 9 && 0 <=
i__1 ? i__1 : s_rnge("points", i__1,
- "dskx02_", (ftnlen)1536)], &vbuff[(
+ "dskx02_", (ftnlen)1587)], &vbuff[(
i__2 = nvbuf * 3 - 3) < 600 && 0 <=
i__2 ? i__2 : s_rnge("vbuff", i__2,
- "dskx02_", (ftnlen)1536)]);
+ "dskx02_", (ftnlen)1587)]);
vidxs[(i__1 = nvbuf - 1) < 200 && 0 <= i__1 ?
i__1 : s_rnge("vidxs", i__1, "dskx02_"
- , (ftnlen)1538)] = vids[(i__2 = k - 1)
+ , (ftnlen)1589)] = vids[(i__2 = k - 1)
< 3 && 0 <= i__2 ? i__2 : s_rnge(
- "vids", i__2, "dskx02_", (ftnlen)1538)
+ "vids", i__2, "dskx02_", (ftnlen)1589)
];
}
}
@@ -2158,8 +2209,8 @@ static integer c__0 = 0;
/* round-off error from causing the ray to miss the */
/* plate. Compute the edges of the tetrahedral angle */
/* with the observer as the apex and the vertices as */
-/* members of the edge rays. Finally see if the */
-/* boresight lies inside the tetrahedron. */
+/* members of the edge rays. Finally see if the ray */
+/* lies inside the tetrahedron. */
vsubg_(points, obsmat, &c__9, edges);
pltexp_(edges, &xpdfrc, xpnts);
@@ -2175,7 +2226,7 @@ static integer c__0 = 0;
}
if (hits) {
-/* The boresight intersects this plate. */
+/* The ray intersects this plate. */
if (! have || scale < near__) {
@@ -2188,10 +2239,14 @@ static integer c__0 = 0;
/* If this intersection point is closer to the */
/* ray's vertex than the last one, pick this point */
/* and the plate it's on. */
-/* ___ ____ __________ */
-/* XPT = VTX2 + SCALE*UDIR */
- vlcom_(&c_b40, vtx2, &scale, udir, xpt);
+/* Note that we don't yet know that this solution */
+/* is valid. */
+
+/* ___ ____ __________ */
+/* XPT2 = VTX2 + SCALE*UDIR */
+
+ vlcom_(&c_b40, vtx2, &scale, udir, xpt2);
/* Compute the voxel grid coordinates of the */
/* intercept. HITCOR is a double precision vector */
@@ -2199,25 +2254,25 @@ static integer c__0 = 0;
/* be precise). Note that the components of HITCOR */
/* are zero-based. */
- zztogrid_(xpt, voxori, &voxsiz, hitcor);
+ zztogrid_(xpt2, voxori, &voxsiz, hitcor);
/* Look up the voxel grid coordinates (integer, */
/* 1-based) of the current voxel. */
k = vxlout[(i__2 = source[(i__1 = i__ - 1) <
256000 && 0 <= i__1 ? i__1 : s_rnge("sou"
- "rce", i__1, "dskx02_", (ftnlen)1615)] - 1)
+ "rce", i__1, "dskx02_", (ftnlen)1670)] - 1)
< 50000 && 0 <= i__2 ? i__2 : s_rnge(
- "vxlout", i__2, "dskx02_", (ftnlen)1615)];
+ "vxlout", i__2, "dskx02_", (ftnlen)1670)];
vxc1 = voxlst[(i__1 = k * 3 - 3) < 150000 && 0 <=
i__1 ? i__1 : s_rnge("voxlst", i__1,
- "dskx02_", (ftnlen)1617)];
+ "dskx02_", (ftnlen)1672)];
vxc2 = voxlst[(i__1 = k * 3 - 2) < 150000 && 0 <=
i__1 ? i__1 : s_rnge("voxlst", i__1,
- "dskx02_", (ftnlen)1618)];
+ "dskx02_", (ftnlen)1673)];
vxc3 = voxlst[(i__1 = k * 3 - 1) < 150000 && 0 <=
i__1 ? i__1 : s_rnge("voxlst", i__1,
- "dskx02_", (ftnlen)1619)];
+ "dskx02_", (ftnlen)1674)];
invox = hitcor[0] > vxc1 - xtol - 1 && hitcor[0] <
vxc1 + xtol && hitcor[1] > vxc2 - xtol -
1 && hitcor[1] < vxc2 + xtol && hitcor[2]
@@ -2230,7 +2285,7 @@ static integer c__0 = 0;
/* are extended using the "greedy" margin. */
dskgtl_(&c__2, &greedm);
- zzinvelt_(xpt, &corsys, &dskdsc[6], &dskdsc[
+ zzinvelt_(xpt2, &corsys, &dskdsc[6], &dskdsc[
16], &greedm, &c__0, &inseg);
if (inseg) {
@@ -2241,13 +2296,14 @@ static integer c__0 = 0;
/* intercepts beyond the voxel designated by */
/* FINAL. */
+ vequ_(xpt2, xpt);
have = TRUE_;
near__ = scale;
*plid = j;
final = source[(i__1 = i__ - 1) < 256000
&& 0 <= i__1 ? i__1 : s_rnge(
"source", i__1, "dskx02_", (
- ftnlen)1657)];
+ ftnlen)1714)];
/* Indicate that a solution was found. We'll */
/* keep looking for a better one if PLID is */
@@ -2268,11 +2324,11 @@ static integer c__0 = 0;
if ((i__3 = platid[(i__2 = k - 1) <
256000 && 0 <= i__2 ? i__2 :
s_rnge("platid", i__2, "dskx02_",
- (ftnlen)1678)], abs(i__3)) == w) {
+ (ftnlen)1735)], abs(i__3)) == w) {
platid[(i__2 = k - 1) < 256000 && 0 <=
i__2 ? i__2 : s_rnge("platid"
, i__2, "dskx02_", (ftnlen)
- 1679)] = w;
+ 1736)] = w;
}
}
}
--
2.28.0