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#include <iostream>
#include <mbgl/test/util.hpp>
#include <mbgl/style/function.hpp>
#include <mbgl/style/style_calculation_parameters.hpp>
using namespace mbgl;
TEST(Function, Constant) {
EXPECT_EQ(2.0f, mbgl::Function<float>(2).evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(3.8f, mbgl::Function<float>(3.8).evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(22.0f, mbgl::Function<float>(22).evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(2.0f, mbgl::Function<float>(2).evaluate(StyleCalculationParameters(4)));
EXPECT_EQ(3.8f, mbgl::Function<float>(3.8).evaluate(StyleCalculationParameters(4)));
EXPECT_EQ(22.0f, mbgl::Function<float>(22).evaluate(StyleCalculationParameters(4)));
EXPECT_EQ(2.0f, mbgl::Function<float>(2).evaluate(StyleCalculationParameters(22)));
EXPECT_EQ(3.8f, mbgl::Function<float>(3.8).evaluate(StyleCalculationParameters(22)));
EXPECT_EQ(22.0f, mbgl::Function<float>(22).evaluate(StyleCalculationParameters(22)));
}
TEST(Function, Stops) {
// Explicit constant slope in fringe regions.
mbgl::Function<float> slope_1({ { 0, 1.5 }, { 6, 1.5 }, { 8, 3 }, { 22, 3 } }, 1.75);
EXPECT_EQ(1.5, slope_1.evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(1.5, slope_1.evaluate(StyleCalculationParameters(4)));
EXPECT_EQ(1.5, slope_1.evaluate(StyleCalculationParameters(6)));
ASSERT_FLOAT_EQ(2.0454545454545454, slope_1.evaluate(StyleCalculationParameters(7)));
EXPECT_EQ(3.0, slope_1.evaluate(StyleCalculationParameters(8)));
EXPECT_EQ(3.0, slope_1.evaluate(StyleCalculationParameters(9)));
EXPECT_EQ(3.0, slope_1.evaluate(StyleCalculationParameters(15)));
EXPECT_EQ(3.0, slope_1.evaluate(StyleCalculationParameters(22)));
// Test constant values in fringe regions.
mbgl::Function<float> slope_2({ { 6, 1.5 }, { 8, 3 } }, 1.75);
EXPECT_EQ(1.5, slope_2.evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(1.5, slope_2.evaluate(StyleCalculationParameters(4)));
EXPECT_EQ(1.5, slope_2.evaluate(StyleCalculationParameters(6)));
ASSERT_FLOAT_EQ(2.0454545454545454, slope_2.evaluate(StyleCalculationParameters(7)));
EXPECT_EQ(3.0, slope_2.evaluate(StyleCalculationParameters(8)));
EXPECT_EQ(3.0, slope_2.evaluate(StyleCalculationParameters(9)));
EXPECT_EQ(3.0, slope_2.evaluate(StyleCalculationParameters(15)));
EXPECT_EQ(3.0, slope_2.evaluate(StyleCalculationParameters(22)));
// Test no values.
mbgl::Function<float> slope_3({}, 1.75);
EXPECT_EQ(1, slope_3.evaluate(StyleCalculationParameters(2)));
EXPECT_EQ(1, slope_3.evaluate(StyleCalculationParameters(6)));
EXPECT_EQ(1, slope_3.evaluate(StyleCalculationParameters(12)));
// Explicit constant slope in fringe regions.
mbgl::Function<float> slope_4({ { 0, 2 }, { 8, 10 } }, 1);
EXPECT_EQ(2, slope_4.evaluate(StyleCalculationParameters(0)));
EXPECT_EQ(3, slope_4.evaluate(StyleCalculationParameters(1)));
EXPECT_EQ(4, slope_4.evaluate(StyleCalculationParameters(2)));
EXPECT_EQ(4.75, slope_4.evaluate(StyleCalculationParameters(2.75)));
EXPECT_EQ(10, slope_4.evaluate(StyleCalculationParameters(8)));
}
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