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[apps/shared] Factorize regression and function did change range method

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Change-Id: Ie4ddefe883a4a0c40f50b5b2afe3d6eb7aa78e0e
This commit is contained in:
Émilie Feral
2017-06-15 17:19:06 +02:00
parent 15892aa7bf
commit 98a877082c
7 changed files with 129 additions and 96 deletions
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97
apps/shared/function_graph_controller.cpp
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@@ -39,67 +39,6 @@ void FunctionGraphController::viewWillAppear() {
InteractiveCurveViewController::viewWillAppear();
}
bool FunctionGraphController::didChangeRange(InteractiveCurveViewRange * interactiveCurveViewRange) {
if (!interactiveCurveViewRange->yAuto()) {
return false;
}
TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
if (functionStore()->numberOfActiveFunctions() <= 0) {
return false;
}
float min = FLT_MAX;
float max = -FLT_MAX;
float xMin = interactiveCurveViewRange->xMin();
float xMax = interactiveCurveViewRange->xMax();
float step = (xMax - xMin)/curveView()->resolution();
for (int i=0; i<functionStore()->numberOfActiveFunctions(); i++) {
Function * f = functionStore()->activeFunctionAtIndex(i);
float y = 0.0f;
for (int i = 0; i <= curveView()->resolution(); i++) {
float x = xMin + i*step;
y = f->evaluateAtAbscissa(x, myApp->localContext());
if (!isnan(y) && !isinf(y)) {
min = min < y ? min : y;
max = max > y ? max : y;
}
}
}
float range = max - min;
if (max < min) {
range = 0.0f;
}
if (interactiveCurveViewRange->yMin() == min-k_displayBottomMarginRatio*range
&& interactiveCurveViewRange->yMax() == max+k_displayTopMarginRatio*range) {
return false;
}
if (min == max) {
float step = max != 0.0f ? interactiveCurveViewRange->computeGridUnit(CurveViewRange::Axis::Y, 0.0f, max) : 1.0f;
min = min - step;
max = max + step;
}
if (min == FLT_MAX && max == -FLT_MAX) {
min = -1.0f;
max = 1.0f;
}
if (min == FLT_MAX) {
float step = max != 0.0f ? interactiveCurveViewRange->computeGridUnit(CurveViewRange::Axis::Y, 0.0f, fabsf(max)) : 1.0f;
min = max-step;
}
if (max == -FLT_MAX) {
float step = min != 0.0f ? interactiveCurveViewRange->computeGridUnit(CurveViewRange::Axis::Y, 0.0f, fabsf(min)) : 1.0f;
max = min+step;
}
interactiveCurveViewRange->setYMin(min-k_displayBottomMarginRatio*range);
interactiveCurveViewRange->setYMax(max+k_displayTopMarginRatio*range);
if (isinf(interactiveCurveViewRange->xMin())) {
interactiveCurveViewRange->setYMin(-FLT_MAX);
}
if (isinf(interactiveCurveViewRange->xMax())) {
interactiveCurveViewRange->setYMax(FLT_MAX);
}
return true;
}
bool FunctionGraphController::handleEnter() {
Function * f = functionStore()->activeFunctionAtIndex(m_indexFunctionSelectedByCursor);
curveParameterController()->setFunction(f);
@@ -141,6 +80,42 @@ void FunctionGraphController::reloadBannerView() {
bannerView()->setLegendAtIndex(buffer, 1);
}
InteractiveCurveViewRangeDelegate::Range FunctionGraphController::computeYRange(InteractiveCurveViewRange * interactiveCurveViewRange) {
TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
float min = FLT_MAX;
float max = -FLT_MAX;
float xMin = interactiveCurveViewRange->xMin();
float xMax = interactiveCurveViewRange->xMax();
float step = (xMax - xMin)/curveView()->resolution();
if (functionStore()->numberOfActiveFunctions() <= 0) {
InteractiveCurveViewRangeDelegate::Range range;
range.min = xMin;
range.max = xMax;
return range;
}
for (int i=0; i<functionStore()->numberOfActiveFunctions(); i++) {
Function * f = functionStore()->activeFunctionAtIndex(i);
float y = 0.0f;
for (int i = 0; i <= curveView()->resolution(); i++) {
float x = xMin + i*step;
y = f->evaluateAtAbscissa(x, myApp->localContext());
if (!isnan(y) && !isinf(y)) {
min = min < y ? min : y;
max = max > y ? max : y;
}
}
}
InteractiveCurveViewRangeDelegate::Range range;
range.min = min;
range.max = max;
return range;
}
float FunctionGraphController::addMargin(float x, float range, bool isMin) {
float ratio = isMin ? -k_displayBottomMarginRatio : k_displayTopMarginRatio;
return x+ratio*range;
}
void FunctionGraphController::initRangeParameters() {
interactiveCurveViewRange()->setDefault();
initCursorParameters();