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#pragma once
#include <array>
#include <mbgl/util/platform.hpp>
#include <mbgl/gl/texture.hpp>
#include <mbgl/util/chrono.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/optional.hpp>
namespace mbgl {
namespace gl {
class Context;
} // namespace gl
class FrameHistory {
public:
FrameHistory();
void record(const TimePoint&, float zoom, const Duration&);
bool needsAnimation(const Duration&) const;
void bind(gl::Context&, uint32_t);
void upload(gl::Context&, uint32_t);
bool isVisible(const float zoom) const;
private:
std::array<TimePoint, 256> changeTimes;
std::array<uint8_t, 256> changeOpacities;
AlphaImage opacities{ { 256, 1 } };
int16_t previousZoomIndex = 0;
TimePoint previousTime;
TimePoint time;
bool firstFrame = true;
bool dirty = true;
mbgl::optional<gl::Texture> texture;
};
} // namespace mbgl
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