diff options
Diffstat (limited to 'examples/datavisualization/qmloscilloscope/datasource.cpp')
| -rw-r--r-- | examples/datavisualization/qmloscilloscope/datasource.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/examples/datavisualization/qmloscilloscope/datasource.cpp b/examples/datavisualization/qmloscilloscope/datasource.cpp index f466b2b0..353c878b 100644 --- a/examples/datavisualization/qmloscilloscope/datasource.cpp +++ b/examples/datavisualization/qmloscilloscope/datasource.cpp @@ -45,7 +45,7 @@ void DataSource::generateData(int cacheCount, int rowCount, int columnCount, float xMin, float xMax, float yMin, float yMax, float zMin, float zMax) { - if (!cacheCount) + if (!cacheCount || !rowCount || !columnCount) return; clearData(); @@ -84,7 +84,7 @@ void DataSource::generateData(int cacheCount, int rowCount, int columnCount, float colWave = float(qSin((2.0 * M_PI * colMod) - (1.0 / 2.0 * M_PI)) + 1.0); float y = (colWave * ((float(qSin(rowColWaveAngleMul * colMod) + 1.0)))) * rowColWaveMul - + (0.15f * float(rand()) / float(RAND_MAX)) * yRangeMod; + + (0.15f * float(qrand()) / float(RAND_MAX)) * yRangeMod; int index = k + cacheIndexAdjustment; if (index >= columnCount) { |