diff options
| author | Jasper van de Gronde <jasper.vandegronde@gmail.com> | 2015-01-06 19:52:44 +0000 |
|---|---|---|
| committer | Jaspervdg <th.v.d.gronde@hccnet.nl> | 2015-01-06 19:52:44 +0000 |
| commit | 397d39e20cc0aa3b50f473b57a79603dbc2f65f2 (patch) | |
| tree | 3e056a1ef5885f9d14b05df037758524f6245139 /src | |
| parent | Add getDocumentScale() to return "real-world" to "user-unit" scale factor. (diff) | |
| download | inkscape-397d39e20cc0aa3b50f473b57a79603dbc2f65f2.tar.gz inkscape-397d39e20cc0aa3b50f473b57a79603dbc2f65f2.zip | |
Rejection sampling to avoid indeterminate gradients in feTurbulence.
(bzr r13844)
Diffstat (limited to 'src')
| -rw-r--r-- | src/display/nr-filter-turbulence.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/display/nr-filter-turbulence.cpp b/src/display/nr-filter-turbulence.cpp index a2a8c5756..19dedb67c 100644 --- a/src/display/nr-filter-turbulence.cpp +++ b/src/display/nr-filter-turbulence.cpp @@ -64,8 +64,10 @@ public: for (i = 0; i < BSize; ++i) { _latticeSelector[i] = i; - _gradient[i][k][0] = static_cast<double>(_random() % (BSize*2) - BSize) / BSize; - _gradient[i][k][1] = static_cast<double>(_random() % (BSize*2) - BSize) / BSize; + do { + _gradient[i][k][0] = static_cast<double>(_random() % (BSize*2) - BSize) / BSize; + _gradient[i][k][1] = static_cast<double>(_random() % (BSize*2) - BSize) / BSize; + } while(_gradient[i][k][0] == 0 && _gradient[i][k][1] == 0); // normalize gradient double s = hypot(_gradient[i][k][0], _gradient[i][k][1]); |