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#include <mbgl/test/util.hpp>
#include <mbgl/test/fixture_log_observer.hpp>
#include <mbgl/sprite/sprite_atlas.hpp>
#include <mbgl/sprite/sprite_store.hpp>
#include <mbgl/sprite/sprite_parser.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/image.hpp>
using namespace mbgl;
namespace {
auto readImage(const std::string& name) {
return decodeImage(util::read_file(name));
}
auto imageFromAtlas(const SpriteAtlas& atlas) {
const size_t bytes = atlas.getTextureWidth() * atlas.getTextureHeight() * 4;
auto data = std::make_unique<uint8_t[]>(bytes);
const auto src = reinterpret_cast<const uint8_t*>(atlas.getData());
std::copy(src, src + bytes, data.get());
return PremultipliedImage{ atlas.getTextureWidth(), atlas.getTextureHeight(), std::move(data) };
}
} // namespace
TEST(Sprite, SpriteAtlas) {
FixtureLog log;
auto spriteParseResult = parseSprite(util::read_file("test/fixtures/annotations/emerald.png"),
util::read_file("test/fixtures/annotations/emerald.json"));
SpriteStore store(1);
store.setSprites(spriteParseResult.get<Sprites>());
SpriteAtlas atlas(63, 112, 1, store);
EXPECT_EQ(1.0f, atlas.getPixelRatio());
EXPECT_EQ(63, atlas.getWidth());
EXPECT_EQ(112, atlas.getHeight());
EXPECT_EQ(63, atlas.getTextureWidth());
EXPECT_EQ(112, atlas.getTextureHeight());
// Image hasn't been created yet.
EXPECT_FALSE(atlas.getData());
auto metro = *atlas.getImage("metro", false);
EXPECT_EQ(0, metro.pos.x);
EXPECT_EQ(0, metro.pos.y);
EXPECT_EQ(20, metro.pos.w);
EXPECT_EQ(20, metro.pos.h);
EXPECT_EQ(18, metro.spriteImage->getWidth());
EXPECT_EQ(18, metro.spriteImage->getHeight());
EXPECT_EQ(18, metro.spriteImage->image.width);
EXPECT_EQ(18, metro.spriteImage->image.height);
EXPECT_EQ(1.0f, metro.spriteImage->pixelRatio);
EXPECT_TRUE(atlas.getData());
auto pos = *atlas.getPosition("metro", false);
EXPECT_DOUBLE_EQ(18, pos.size[0]);
EXPECT_DOUBLE_EQ(18, pos.size[1]);
EXPECT_DOUBLE_EQ(1.0f / 63, pos.tl[0]);
EXPECT_DOUBLE_EQ(1.0f / 112, pos.tl[1]);
EXPECT_DOUBLE_EQ(19.0f / 63, pos.br[0]);
EXPECT_DOUBLE_EQ(19.0f / 112, pos.br[1]);
auto missing = atlas.getImage("doesnotexist", false);
EXPECT_FALSE(missing);
EXPECT_EQ(1u, log.count({
EventSeverity::Info,
Event::Sprite,
int64_t(-1),
"Can't find sprite named 'doesnotexist'",
}));
// Different wrapping mode produces different image.
auto metro2 = *atlas.getImage("metro", true);
EXPECT_EQ(20, metro2.pos.x);
EXPECT_EQ(0, metro2.pos.y);
EXPECT_EQ(20, metro2.pos.w);
EXPECT_EQ(20, metro2.pos.h);
EXPECT_EQ(readImage("test/fixtures/annotations/result-spriteatlas.png"), imageFromAtlas(atlas));
}
TEST(Sprite, SpriteAtlasSize) {
auto spriteParseResult = parseSprite(util::read_file("test/fixtures/annotations/emerald.png"),
util::read_file("test/fixtures/annotations/emerald.json"));
SpriteStore store(1);
store.setSprites(spriteParseResult.get<Sprites>());
SpriteAtlas atlas(63, 112, 1.4, store);
EXPECT_DOUBLE_EQ(1.4f, atlas.getPixelRatio());
EXPECT_EQ(63, atlas.getWidth());
EXPECT_EQ(112, atlas.getHeight());
EXPECT_EQ(89, atlas.getTextureWidth());
EXPECT_EQ(157, atlas.getTextureHeight());
auto metro = *atlas.getImage("metro", false);
EXPECT_EQ(0, metro.pos.x);
EXPECT_EQ(0, metro.pos.y);
EXPECT_EQ(16, metro.pos.w);
EXPECT_EQ(16, metro.pos.h);
EXPECT_EQ(18, metro.spriteImage->getWidth());
EXPECT_EQ(18, metro.spriteImage->getHeight());
EXPECT_EQ(18, metro.spriteImage->image.width);
EXPECT_EQ(18, metro.spriteImage->image.height);
EXPECT_EQ(1.0f, metro.spriteImage->pixelRatio);
EXPECT_EQ(readImage("test/fixtures/annotations/result-spriteatlassize.png"),
imageFromAtlas(atlas));
}
TEST(Sprite, SpriteAtlasUpdates) {
SpriteStore store(1);
SpriteAtlas atlas(32, 32, 1, store);
EXPECT_EQ(1.0f, atlas.getPixelRatio());
EXPECT_EQ(32, atlas.getWidth());
EXPECT_EQ(32, atlas.getHeight());
EXPECT_EQ(32, atlas.getTextureWidth());
EXPECT_EQ(32, atlas.getTextureHeight());
store.setSprite("one", std::make_shared<SpriteImage>(PremultipliedImage(16, 12), 1));
auto one = *atlas.getImage("one", false);
EXPECT_EQ(0, one.pos.x);
EXPECT_EQ(0, one.pos.y);
EXPECT_EQ(20, one.pos.w);
EXPECT_EQ(16, one.pos.h);
EXPECT_EQ(16, one.spriteImage->getWidth());
EXPECT_EQ(12, one.spriteImage->getHeight());
EXPECT_EQ(16, one.spriteImage->image.width);
EXPECT_EQ(12, one.spriteImage->image.height);
EXPECT_EQ(1.0f, one.spriteImage->pixelRatio);
EXPECT_EQ(readImage("test/fixtures/annotations/result-spriteatlas-empty.png"),
imageFromAtlas(atlas));
// Update sprite
PremultipliedImage image2(16, 12);
for (size_t i = 0; i < image2.size(); i++) {
image2.data.get()[i] = 255;
}
auto newSprite = std::make_shared<SpriteImage>(std::move(image2), 1);
store.setSprite("one", newSprite);
ASSERT_EQ(newSprite, store.getSprite("one"));
// Atlas texture hasn't changed yet.
EXPECT_EQ(readImage("test/fixtures/annotations/result-spriteatlas-empty.png"),
imageFromAtlas(atlas));
atlas.updateDirty();
// Now the atlas texture has changed.
EXPECT_EQ(readImage("test/fixtures/annotations/result-spriteatlas-updated.png"),
imageFromAtlas(atlas));
}
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