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PfmFile::flip()

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This commit is contained in:
David Rose 2012-03-28 21:06:38 +00:00
parent 438c297968
commit 98d7643a23
2 changed files with 50 additions and 0 deletions
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49
panda/src/grutil/pfmFile.cxx
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@ -519,6 +519,55 @@ reverse_rows() {
_table.swap(reversed);
}
////////////////////////////////////////////////////////////////////
// Function: PfmFile::flip
// Access: Published
// Description: Reverses, transposes, and/or rotates the table
// in-place according to the specified parameters. If
// flip_x is true, the x axis is reversed; if flip_y is
// true, the y axis is reversed. Then, if transpose is
// true, the x and y axes are exchanged. These
// parameters can be used to select any combination of
// 90-degree or 180-degree rotations and flips.
////////////////////////////////////////////////////////////////////
void PfmFile::
flip(bool flip_x, bool flip_y, bool transpose) {
nassertv(is_valid());
Table flipped;
flipped.reserve(_table.size());
if (transpose) {
// Transposed case. X becomes Y, Y becomes X.
for (int xi = 0; xi < _x_size; ++xi) {
int source_xi = flip_x ? xi : _x_size - 1 - xi;
for (int yi = 0; yi < _y_size; ++yi) {
int source_yi = flip_y ? yi : _y_size - 1 - yi;
const LPoint3 &p = _table[source_yi * _x_size + source_xi];
flipped.push_back(p);
}
}
int t = _x_size;
_x_size = _y_size;
_y_size = t;
} else {
// Non-transposed. X is X, Y is Y.
for (int yi = 0; yi < _y_size; ++yi) {
int source_yi = flip_y ? yi : _y_size - 1 - yi;
for (int xi = 0; xi < _x_size; ++xi) {
int source_xi = flip_x ? xi : _x_size - 1 - xi;
const LPoint3 &p = _table[source_yi * _x_size + source_xi];
flipped.push_back(p);
}
}
}
nassertv(flipped.size() == _table.size());
_table.swap(flipped);
}
////////////////////////////////////////////////////////////////////
// Function: PfmFile::xform
// Access: Published

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

@ -66,6 +66,7 @@ PUBLISHED:
BLOCKING void resize(int new_x_size, int new_y_size);
BLOCKING void reverse_rows();
BLOCKING void flip(bool flip_x, bool flip_y, bool transpose);
BLOCKING void xform(const LMatrix4 &transform);
BLOCKING void project(const Lens *lens);
BLOCKING void merge(const PfmFile &other);