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#ifndef LLMR_STYLE_FUNCTION_PROPERTIES
#define LLMR_STYLE_FUNCTION_PROPERTIES
#include <vector>
namespace llmr {
namespace functions {
float null(float z, const std::vector<float>&);
float constant(float z, const std::vector<float>& values);
float min(float z, const std::vector<float>& values);
float max(float z, const std::vector<float>& values);
float stops(float z, const std::vector<float>& values);
float linear(float z, const std::vector<float>& values);
float exponential(float z, const std::vector<float>& values);
}
struct FunctionProperty {
typedef float (*fn)(float z, const std::vector<float>& values);
fn function;
std::vector<float> values;
inline FunctionProperty() : function(&functions::null) {}
inline FunctionProperty(const FunctionProperty &property)
: function(property.function), values(property.values) {}
inline FunctionProperty(FunctionProperty &&property)
: function(property.function), values(std::move(property.values)) {}
inline void operator=(const FunctionProperty &rhs) {
function = rhs.function;
values = rhs.values;
}
inline FunctionProperty(float value) : function(&functions::constant), values(1, value) {}
template <typename T> inline T evaluate(float z) const { return function(z, values); }
};
}
#endif
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