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a few checks against bad data

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This commit is contained in:
David Rose 2011-12-29 22:23:14 +00:00
parent b5eeced04a
commit 1c9395b311
2 changed files with 9 additions and 3 deletions
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1
panda/src/grutil/pfmFile.I
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@ -109,6 +109,7 @@ get_point(int x, int y) const {
////////////////////////////////////////////////////////////////////
INLINE void PfmFile::
set_point(int x, int y, const LVecBase3 &point) {
nassertv(!point.is_nan());
nassertv(x >= 0 && x < _x_size);
nassertv(y >= 0 && y < _y_size);
_table[y * _x_size + x] = point;

11
panda/src/grutil/pfmFile.cxx
View File

@ -208,7 +208,9 @@ read(istream &in) {
LittleEndian value(&data, sizeof(data));
PN_float32 result;
value.store_value(&result, sizeof(result));
point[ci] = result;
if (!cnan(result)) {
point[ci] = result;
}
}
_table.push_back(point);
}
@ -221,7 +223,9 @@ read(istream &in) {
BigEndian value(&data, sizeof(data));
PN_float32 result;
value.store_value(&result, sizeof(result));
point[ci] = result;
if (!cnan(result)) {
point[ci] = result;
}
}
_table.push_back(point);
}
@ -841,7 +845,7 @@ make_vis_mesh_geom(GeomNode *gnode, bool inverted) const {
for (int xi = x_begin; xi < x_end; ++xi) {
const LPoint3 &point = get_point(xi, yi);
LPoint2 uv(PN_stdfloat(xi) / PN_stdfloat(_x_size - 1),
PN_stdfloat(yi) / PN_stdfloat(_y_size - 1));
PN_stdfloat(yi) / PN_stdfloat(_y_size - 1));
if (_vis_inverse) {
vertex.add_data2(uv);
@ -879,6 +883,7 @@ make_vis_mesh_geom(GeomNode *gnode, bool inverted) const {
n[2] += v0[0] * v1[1] - v0[1] * v1[0];
}
n.normalize();
nassertv(!n.is_nan());
if (inverted) {
n = -n;
}