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[apps/graph_ctrlr] Reload range if no previous model is present

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We memoize the checksum of the x first models, and we check that one of
these models is still present when the graph view appears. If so, we do
not reload the range, other wise we reload it.

Scenario:
f(t) = [t^2  t+1] in parametric
Display the graph
f(x) = 1 on ]-inf;0]
g(x) = 2 on [0;inf[
Display the graph -> the range did not change
This commit is contained in:
Léa Saviot
2020-03-04 14:41:18 +01:00
committed by RubenNumworks
parent aab8974934
commit 53705fb333
13 changed files with 70 additions and 7 deletions
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3
apps/shared/function_graph_controller.h
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@@ -13,6 +13,7 @@ namespace Shared {
class FunctionGraphController : public InteractiveCurveViewController, public FunctionBannerDelegate {
public:
static constexpr size_t sNumberOfMemoizedModelVersions = 5;
FunctionGraphController(Responder * parentResponder, InputEventHandlerDelegate * inputEventHandlerDelegate, ButtonRowController * header, InteractiveCurveViewRange * interactiveRange, CurveView * curveView, CurveViewCursor * cursor, int * indexFunctionSelectedByCursor, uint32_t * modelVersion, uint32_t * previousModelsVersions, uint32_t * rangeVersion, Poincare::Preferences::AngleUnit * angleUnitVersion);
bool isEmpty() const override;
ViewController * initialisationParameterController() override;
@@ -49,7 +50,9 @@ private:
// InteractiveCurveViewController
bool moveCursorVertically(int direction) override;
uint32_t modelVersion() override;
uint32_t modelVersionAtIndex(size_t i) override;
uint32_t rangeVersion() override;
size_t numberOfMemoizedVersions() const override { return sNumberOfMemoizedModelVersions; }
InitialisationParameterController m_initialisationParameterController;
Poincare::Preferences::AngleUnit * m_angleUnitVersion;