test/elastic_easing_test.cpp

#include <rive/file.hpp>
#include <rive/node.hpp>
#include <rive/animation/elastic_interpolator.hpp>
#include "rive/shapes/shape.hpp"
#include "catch.hpp"
#include "rive_file_reader.hpp"
#include <cstdio>

TEST_CASE("test elastic easing loads properly", "[file]")
{
    auto file = ReadRiveFile("../../test/assets/test_elastic.riv");

    auto artboard = file->artboard();
    REQUIRE(artboard != nullptr);

    REQUIRE(artboard->find<rive::ElasticInterpolator>().size() == 1);

    auto interpolator = artboard->find<rive::ElasticInterpolator>()[0];
    REQUIRE(interpolator->easing() == rive::Easing::easeOut);
    REQUIRE(interpolator->amplitude() == 1.0f);
    REQUIRE(interpolator->period() == 0.25f);

    REQUIRE(artboard->find<rive::Shape>().size() == 1);

    auto shape = artboard->find<rive::Shape>()[0];
    REQUIRE(shape->x() == Approx(145.19f));
    auto animation = artboard->animation("Timeline 1");
    REQUIRE(animation != nullptr);
    // Go to frame 15.
    animation->apply(artboard, 7.0f / animation->fps(), 1.0f);
    REQUIRE(shape->x() == Approx(423.98f));

    animation->apply(artboard, 14.0f / animation->fps(), 1.0f);
    REQUIRE(shape->x() == Approx(303.995f));
}