diff options
Diffstat (limited to 'src/datavisualization/utils/surfaceobject.cpp')
| -rw-r--r-- | src/datavisualization/utils/surfaceobject.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/datavisualization/utils/surfaceobject.cpp b/src/datavisualization/utils/surfaceobject.cpp index b0cd6c82..cfaab09c 100644 --- a/src/datavisualization/utils/surfaceobject.cpp +++ b/src/datavisualization/utils/surfaceobject.cpp @@ -25,6 +25,10 @@ QT_BEGIN_NAMESPACE_DATAVISUALIZATION SurfaceObject::SurfaceObject() + : m_surfaceType(Undefined), + m_columns(0), + m_rows(0), + m_gridIndexCount(0) { m_indicesType = GL_UNSIGNED_INT; initializeOpenGLFunctions(); @@ -668,6 +672,9 @@ GLuint SurfaceObject::gridIndexCount() QVector3D SurfaceObject::vertexAt(int column, int row) { int pos = 0; + if (m_surfaceType == Undefined || !m_vertices.size()) + return zeroVector; + if (m_surfaceType == SurfaceFlat) pos = row * (m_columns * 2 - 2) + column * 2 - (column > 0); else |