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#include <mbgl/test/util.hpp>
#include <mbgl/test/stub_geometry_tile_feature.hpp>
#include <mbgl/style/function/composite_function.hpp>
using namespace mbgl;
using namespace mbgl::style;
using namespace std::string_literals;
static StubGeometryTileFeature oneInteger {
PropertyMap {{ "property", uint64_t(1) }}
};
TEST(CompositeFunction, ZoomInterpolation) {
EXPECT_EQ(40.0f, CompositeFunction<float>("property", CompositeExponentialStops<float>({
{0.0f, {{uint64_t(1), 24.0f}}},
{1.5f, {{uint64_t(1), 36.0f}}},
{3.0f, {{uint64_t(1), 48.0f}}}
}), 0.0f)
.evaluate(2.0f, oneInteger, -1.0f)) << "Should interpolate between stops";
EXPECT_EQ(33.0, CompositeFunction<float>("property", CompositeExponentialStops<float>({
{5.0f, {{uint64_t(1), 33.0f}}},
{10.0f, {{uint64_t(1), 66.0f}}}
}), 0.0f)
.evaluate(0.0f, oneInteger, -1.0f)) << "Use first stop output for input values from -inf to first stop";
EXPECT_EQ(66.0, CompositeFunction<float>("property", CompositeExponentialStops<float>({
{0.0f, {{uint64_t(1), 33.0f}}},
{10.0f, {{uint64_t(1), 66.0f}}}
}), 0.0f)
.evaluate(20.0f, oneInteger, -1.0f)) << "Use last stop output for input values from last stop to +inf";
EXPECT_EQ(66.0f, CompositeFunction<float>("property", CompositeExponentialStops<float>({
{0.0f, {{uint64_t(1), 33.0f}}},
{10.0f, {{uint64_t(1), 66.0f}}}
}), 0.0f)
.evaluate(10.0f, oneInteger, -1.0f)) << "Should interpolate TO the last stop.";
EXPECT_EQ(33.0f, CompositeFunction<float>("property", CompositeExponentialStops<float>({
{0.0f, {{uint64_t(1), 33.0f}}},
{10.0f, {{uint64_t(1), 66.0f}}}
}), 0.0f)
.evaluate(0.0f, oneInteger, -1.0f)) << "Should interpolate TO the first stop";
}
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