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[apps/shared] Fix NaN comparison in isCursorHanging method

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This commit is contained in:
Hugo Saint-Vignes
2020-12-10 18:09:56 +01:00
committed by LeaNumworks
parent 56a6917cfd
commit 7646f13ca8
1 changed files with 3 additions and 1 deletions
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4
apps/shared/function_graph_controller.cpp
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@@ -130,7 +130,9 @@ bool FunctionGraphController::isCursorHanging() {
}
ExpiringPointer<Function> f = functionStore()->modelForRecord(functionStore()->activeRecordAtIndex(indexFunctionSelectedByCursor()));
Coordinate2D<double> xy = f->evaluateXYAtParameter(m_cursor->t(), context);
return xy.x1() != m_cursor->x() || xy.x2() != m_cursor->y();
// NaN != Nan returns true, but cursor is not hanging if both values are NaN
return (xy.x1() != m_cursor->x() && !(std::isnan(xy.x1()) && std::isnan(m_cursor->x())))
|| (xy.x2() != m_cursor->y() && !(std::isnan(xy.x2()) && std::isnan(m_cursor->y())));
}
CurveView * FunctionGraphController::curveView() {