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#include <mbgl/test/util.hpp>
#include <mbgl/style/paint_property.hpp>
#include <mbgl/renderer/transitioning_property.hpp>
using namespace mbgl;
using namespace mbgl::style;
using namespace std::literals::chrono_literals;
float evaluate(TransitioningProperty<PropertyValue<float>>& property, Duration delta = Duration::zero()) {
ZoomHistory zoomHistory;
zoomHistory.update(0, TimePoint::min() + delta);
PropertyEvaluationParameters parameters {
zoomHistory,
TimePoint::min() + delta,
Duration::zero()
};
PropertyEvaluator<float> evaluator {
parameters,
0.0f
};
return property.evaluate(evaluator, parameters.now);
}
PossiblyEvaluatedPropertyValue<float> evaluate(TransitioningProperty<DataDrivenPropertyValue<float>>& property, Duration delta = Duration::zero()) {
ZoomHistory zoomHistory;
zoomHistory.update(0, TimePoint::min() + delta);
PropertyEvaluationParameters parameters {
zoomHistory,
TimePoint::min() + delta,
Duration::zero()
};
DataDrivenPropertyEvaluator<float> evaluator {
parameters,
0.0f
};
return property.evaluate(evaluator, parameters.now);
}
TEST(TransitioningProperty, EvaluateDefaultValue) {
TransitioningProperty<PropertyValue<float>> property;
ASSERT_EQ(0.0f, evaluate(property));
}
TEST(TransitioningProperty, EvaluateUntransitionedConstant) {
TransitioningProperty<PropertyValue<float>> property {
PropertyValue<float>(1.0f),
TransitioningProperty<PropertyValue<float>>(),
TransitionOptions(),
TimePoint::min()
};
ASSERT_EQ(1.0f, evaluate(property));
}
TEST(TransitioningProperty, EvaluateTransitionedConstantWithoutDelay) {
TransitionOptions transition;
transition.duration = { 1000ms };
TransitioningProperty<PropertyValue<float>> t0 {
PropertyValue<float>(0.0f),
TransitioningProperty<PropertyValue<float>>(),
TransitionOptions(),
TimePoint::min()
};
TransitioningProperty<PropertyValue<float>> t1 {
PropertyValue<float>(1.0f),
t0,
transition,
TimePoint::min()
};
ASSERT_FLOAT_EQ(0.0f, evaluate(t1, 0ms));
ASSERT_FLOAT_EQ(0.823099f, evaluate(t1, 500ms));
ASSERT_FLOAT_EQ(1.0f, evaluate(t1, 1500ms));
}
TEST(TransitioningProperty, EvaluateTransitionedConstantWithDelay) {
TransitionOptions transition;
transition.delay = { 1000ms };
transition.duration = { 1000ms };
TransitioningProperty<PropertyValue<float>> t0 {
PropertyValue<float>(0.0f),
TransitioningProperty<PropertyValue<float>>(),
TransitionOptions(),
TimePoint::min()
};
TransitioningProperty<PropertyValue<float>> t1 {
PropertyValue<float>(1.0f),
t0,
transition,
TimePoint::min()
};
ASSERT_FLOAT_EQ(0.0f, evaluate(t1, 0ms));
ASSERT_FLOAT_EQ(0.0f, evaluate(t1, 500ms));
ASSERT_FLOAT_EQ(0.0f, evaluate(t1, 612ms));
ASSERT_FLOAT_EQ(0.823099f, evaluate(t1, 1500ms));
ASSERT_FLOAT_EQ(1.0f, evaluate(t1, 2500ms));
}
TEST(TransitioningProperty, EvaluateDataDrivenValue) {
TransitionOptions transition;
transition.delay = { 1000ms };
transition.duration = { 1000ms };
TransitioningProperty<DataDrivenPropertyValue<float>> t0 {
DataDrivenPropertyValue<float>(0.0f),
TransitioningProperty<DataDrivenPropertyValue<float>>(),
TransitionOptions(),
TimePoint::min()
};
SourceFunction<float> sourceFunction = {
"property_name",
IdentityStops<float>()
};
TransitioningProperty<DataDrivenPropertyValue<float>> t1 {
DataDrivenPropertyValue<float>(sourceFunction),
t0,
transition,
TimePoint::min()
};
ASSERT_TRUE(evaluate(t0, 0ms).isConstant());
ASSERT_FALSE(evaluate(t1, 0ms).isConstant()) <<
"A paint property transition to a data-driven evaluates immediately to the final value (see https://github.com/mapbox/mapbox-gl-native/issues/8237).";
}
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