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store_mask() with a range limit

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This commit is contained in:
David Rose 2016-01-11 13:27:02 -08:00
parent ffabf6925c
commit 059c929b79
2 changed files with 43 additions and 0 deletions
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42
panda/src/pnmimage/pfmFile.cxx
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@ -467,6 +467,48 @@ store_mask(PNMImage &pnmimage) const {
return true;
}
////////////////////////////////////////////////////////////////////
// Function: PfmFile::store_mask
// Access: Published
// Description: Stores 1 or 0 values into the indicated PNMImage,
// according to has_point() for each pixel. Each valid
// point gets a 1 value; each nonexistent point gets a 0
// value.
//
// This flavor of store_mask also checks whether the
// valid points are within the specified min/max range.
// Any valid points without the condition min_point[c]
// <= value[c] <= max_point[c], for any c, are stored
// with a 0 in the mask.
////////////////////////////////////////////////////////////////////
bool PfmFile::
store_mask(PNMImage &pnmimage, const LVecBase4f &min_point, const LVecBase4f &max_point) const {
if (!is_valid()) {
pnmimage.clear();
return false;
}
pnmimage.clear(get_x_size(), get_y_size(), 1, 255);
for (int yi = 0; yi < get_y_size(); ++yi) {
for (int xi = 0; xi < get_x_size(); ++xi) {
if (!has_point(xi, yi)) {
pnmimage.set_gray(xi, yi, 0);
} else {
const float *value = &_table[(yi * _x_size + xi) * _num_channels];
bool in_range = true;
for (int ci = 0; ci < _num_channels; ++ci) {
if (value[ci] < min_point[ci] || value[ci] > max_point[ci]) {
in_range = false;
break;
}
}
pnmimage.set_gray(xi, yi, (float)in_range);
}
}
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: PfmFile::fill
// Access: Published

1
panda/src/pnmimage/pfmFile.h
View File

@ -50,6 +50,7 @@ PUBLISHED:
BLOCKING bool load(const PNMImage &pnmimage);
BLOCKING bool store(PNMImage &pnmimage) const;
BLOCKING bool store_mask(PNMImage &pnmimage) const;
BLOCKING bool store_mask(PNMImage &pnmimage, const LVecBase4f &min_point, const LVecBase4f &max_point) const;
INLINE bool is_valid() const;
MAKE_PROPERTY(valid, is_valid);