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[apps/shared/function_graph_controller] Clean resolution usage in computeYRange

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This commit is contained in:
Ruben Dashyan
2019-07-11 11:44:21 +02:00
committed by EmilieNumworks
parent f4b7967a58
commit 503995746a
1 changed files with 4 additions and 3 deletions
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7
apps/shared/function_graph_controller.cpp
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@@ -84,13 +84,14 @@ InteractiveCurveViewRangeDelegate::Range FunctionGraphController::computeYRange(
range.max = xMax;
return range;
}
float step = (xMax - xMin) / curveView()->resolution();
for (int i=0; i<functionStore()->numberOfActiveFunctions(); i++) {
ExpiringPointer<Function> f = functionStore()->modelForRecord(functionStore()->activeRecordAtIndex(i));
float res = curveView()->resolution();
/* Scan x-range from the middle to the extrema in order to get balanced
* y-range for even functions (y = 1/x). */
for (int j = -res/2; j <= res/2; j++) {
float x = (xMin+xMax)/2.0+(xMax-xMin)*j/res;
const int balancedBound = std::floor((xMax-xMin)/2/step);
for (int j = -balancedBound; j <= balancedBound ; j++) {
float x = (xMin+xMax)/2 + step * j;
float y = f->evaluateAtAbscissa(x, context);
if (!std::isnan(y) && !std::isinf(y)) {
min = min < y ? min : y;