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