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[poincare/zoom] Handle undefined functions

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Rework the logic so that :
  - an undefined function will be displayed with a clealry defined
    null range.
  - display both an undefined function and a correct function at the
    same time will not affect the correct range.

Change-Id: Ife9dc0d2ace667cab5a6b8826347078fca33e4d5
This commit is contained in:
Gabriel Ozouf
2020-10-15 11:34:28 +02:00
committed by Émilie Feral
parent 20cbefad41
commit 958b172d08
5 changed files with 62 additions and 15 deletions
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15
apps/shared/function_graph_controller.cpp
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@@ -160,12 +160,15 @@ void FunctionGraphController::interestingRanges(InteractiveCurveViewRange * rang
float xMin, xMax, yMin, yMax;
Poincare::Zoom::CombineRanges(length, xMins, xMaxs, &xMin, &xMax);
Poincare::Zoom::CombineRanges(length, yMins, yMaxs, &yMin, &yMax);
range->setXMin(xMin);
range->setXMax(xMax);
range->setYMin(yMin);
range->setYMax(yMax);
yRangeForCursorFirstMove(range);
if (std::isfinite(xMin) && std::isfinite(xMax) && std::isfinite(yMin) && std::isfinite(yMax) && xMax > xMin && yMax > yMin) {
range->setXMin(xMin);
range->setXMax(xMax);
range->setYMin(yMin);
range->setYMax(yMax);
yRangeForCursorFirstMove(range);
} else {
range->setNullRange();
}
}
void FunctionGraphController::yRangeForCursorFirstMove(InteractiveCurveViewRange * range) const {