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#pragma once
#include <mbgl/style/function/exponential_stops.hpp>
#include <mbgl/style/function/interval_stops.hpp>
#include <mbgl/util/interpolate.hpp>
#include <mbgl/util/variant.hpp>
namespace mbgl {
namespace style {
template <class T>
class CameraFunction {
public:
using Stops = std::conditional_t<
util::Interpolatable<T>,
variant<
ExponentialStops<T>,
IntervalStops<T>>,
variant<
IntervalStops<T>>>;
CameraFunction(Stops stops_)
: stops(std::move(stops_)) {
}
T evaluate(float zoom) const {
return stops.match([&] (const auto& s) {
return s.evaluate(Value(double(zoom))).value_or(T());
});
}
friend bool operator==(const CameraFunction& lhs,
const CameraFunction& rhs) {
return lhs.stops == rhs.stops;
}
Stops stops;
};
} // namespace style
} // namespace mbgl
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