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[poincare/zoom] Handle NAN in ExpandSparseWindow

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This commit is contained in:
Gabriel Ozouf
2020-12-09 16:08:26 +01:00
committed by EmilieNumworks
parent 35bfb8ec16
commit 185c780215
1 changed files with 7 additions and 2 deletions
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9
poincare/src/zoom.cpp
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@@ -470,8 +470,13 @@ void Zoom::ExpandSparseWindow(float * sample, int length, float * xMin, float *
for (int i = 0; i < length; i++) {
float x = *xMin + i * step;
float y = sample[i];
float r = 2 * std::max(std::fabs(x - xCenter) / xRange, std::fabs(y - yCenter) / yRange);
emptyCenter = std::min(emptyCenter, r);
if (std::isfinite(y)) {
/* r is the ratio between the window and the largest rectangle (with same
* center and shape as the window) that does not contain (x,y).
* i.e. the smallest zoom-in for which (x,y) is not visible. */
float r = 2 * std::max(std::fabs(x - xCenter) / xRange, std::fabs(y - yCenter) / yRange);
emptyCenter = std::min(emptyCenter, r);
}
}
if (emptyCenter > emptyCenterMaxSize) {