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[apps/graph] Implement defaultCursorT for FunctionGraphController

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This commit is contained in:
Émilie Feral
2019-09-02 15:28:54 +02:00
parent f017ac014d
commit a7285ba1ca
6 changed files with 19 additions and 8 deletions
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10
apps/shared/function_graph_controller.cpp
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@@ -122,8 +122,8 @@ InteractiveCurveViewRangeDelegate::Range FunctionGraphController::computeYRange(
return range;
}
double FunctionGraphController::defaultCursorT() {
return 0.0; //TODO LEA interactiveCurveViewRange()->xCenter();
double FunctionGraphController::defaultCursorT(Ion::Storage::Record record) {
return (interactiveCurveViewRange()->xMin()+interactiveCurveViewRange()->xMax())/2.0f;
}
FunctionStore * FunctionGraphController::functionStore() const {
@@ -131,12 +131,14 @@ FunctionStore * FunctionGraphController::functionStore() const {
}
void FunctionGraphController::initCursorParameters() {
double t = defaultCursorT();
Poincare::Context * context = textFieldDelegateApp()->localContext();
int functionIndex = 0;
Coordinate2D<double> xy;
double t;
do {
ExpiringPointer<Function> firstFunction = functionStore()->modelForRecord(functionStore()->activeRecordAtIndex(functionIndex++));
Ion::Storage::Record record = functionStore()->activeRecordAtIndex(functionIndex++);
ExpiringPointer<Function> firstFunction = functionStore()->modelForRecord(record);
t = defaultCursorT(record);
xy = firstFunction->evaluateXYAtParameter(t, context);
} while ((std::isnan(xy.x2()) || std::isinf(xy.x2())) && functionIndex < functionStore()->numberOfActiveFunctions());
m_cursor->moveTo(t, xy.x1(), xy.x2());