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#ifndef MBGL_RENDERER_FRAME_HISTORY
#define MBGL_RENDERER_FRAME_HISTORY
#include <deque>
#include <cassert>
#include <cmath>
#include <chrono>
#include <mbgl/platform/platform.hpp>
namespace mbgl {
struct FrameSnapshot {
explicit inline FrameSnapshot(std::chrono::steady_clock::time_point now_, float z_) : now(now_), z(z_) {}
std::chrono::steady_clock::time_point now;
float z;
};
struct FadeProperties {
float fadedist;
float minfadezoom;
float maxfadezoom;
float bump;
};
class FrameHistory {
public:
// Record frame history that will be used to calculate fading params
void record(std::chrono::steady_clock::time_point now, float zoom);
bool needsAnimation(std::chrono::steady_clock::duration duration) const;
FadeProperties getFadeProperties(std::chrono::steady_clock::duration duration);
public:
std::deque<FrameSnapshot> history;
};
}
#endif
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