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#pragma once
#include <mbgl/util/chrono.hpp>
#include <cmath>
namespace mbgl {
struct ZoomHistory {
float lastZoom;
float lastIntegerZoom;
TimePoint lastIntegerZoomTime;
bool first = true;
bool update(float z, const TimePoint& now) {
if (first) {
first = false;
lastIntegerZoom = std::floor(z);
lastIntegerZoomTime = TimePoint(Duration::zero());
lastZoom = z;
return true;
} else {
if (std::floor(lastZoom) < std::floor(z)) {
lastIntegerZoom = std::floor(z);
lastIntegerZoomTime = now;
} else if (std::floor(lastZoom) > std::floor(z)) {
lastIntegerZoom = std::floor(z + 1);
lastIntegerZoomTime = now;
}
if (z != lastZoom) {
lastZoom = z;
return true;
}
return false;
}
}
};
} // namespace mbgl
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