std::shared_ptr<utymap::builders::BuilderContext> createBuilderContext(
const utymap::QuadKey &quadKey,
const std::string &stylesheet,
std::function<void(const utymap::math::Mesh &)> meshCallback = nullptr,
std::function<void(const utymap::entities::Element &)> elementCallback = nullptr) {
return std::make_shared<utymap::builders::BuilderContext>(
quadKey,
*getStyleProvider(stylesheet),
*getStringTable(),
*getMeshPool(),
*getElevationProvider(),
meshCallback,
elementCallback,
cancelToken);
}
// Loads quadKey.
void loadQuadKey(const char* styleFile,
const utymap::QuadKey& quadKey,
OnMeshBuilt* meshCallback,
OnElementLoaded* elementCallback,
OnError* errorCallback)
{
safeExecute([&]() {
auto styleProvider = getStyleProvider(styleFile);
ExportElementVisitor elementVisitor(stringTable_, *styleProvider, quadKey.levelOfDetail, elementCallback);
quadKeyBuilder_.build(quadKey, *styleProvider, getElevationProvider(quadKey),
[&meshCallback](const utymap::meshing::Mesh& mesh) {
// NOTE do not notify if mesh is empty.
if (!mesh.vertices.empty()) {
meshCallback(mesh.name.data(),
mesh.vertices.data(), static_cast<int>(mesh.vertices.size()),
mesh.triangles.data(), static_cast<int>(mesh.triangles.size()),
mesh.colors.data(), static_cast<int>(mesh.colors.size()));
}
}, [&elementVisitor](const utymap::entities::Element& element) {
element.accept(elementVisitor);
});
}, errorCallback);
}
// Preload elevation data. Not thread safe.
void preloadElevation(const utymap::QuadKey& quadKey)
{
getElevationProvider(quadKey).preload(utymap::utils::GeoUtils::quadKeyToBoundingBox(quadKey));
}
