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#![feature(array_chunks)]
pub mod mesh;
use anyhow::{Result, bail};
use glam::{DAffine3, DMat4, Vec3};
use log::{debug, error};
use mesh::convert_mesh;
use prost::{Message, bytes::Bytes};
use proto::{BulkMetadata, NodeData, NodeMetadata, PlanetoidMetadata};
use reqwest::{
Client,
header::{HeaderMap, HeaderName, HeaderValue},
};
use std::path::PathBuf;
use tokio::{
fs::{File, create_dir_all},
io::{AsyncReadExt, AsyncWriteExt},
};
use weareshared::{
Affine3A,
resources::{Prefab, RespackEntry},
respack::save_full_respack,
store::ResourceStore,
};
#[tokio::main]
async fn main() -> Result<()> {
env_logger::init_from_env("LOG");
let c = GeClient::new().await?;
let entry = c.planetoid_metdata().await?;
let bulk = c
.bulk_metadata("", entry.root_node_metadata.unwrap().bulk_metadata_epoch())
.await?;
let store = ResourceStore::new_memory();
let mut prefabs = Vec::new();
for node_meta in &bulk.node_metadata {
if unpack_path_and_id(node_meta.path_and_flags()).0.len() != 4 {
// toplevel octs are not found
// also i want most subdivided
continue;
}
let Ok(node_data) = c.node_data(&bulk, &node_meta).await else {
continue;
};
let transform = DMat4::from_cols_slice(&node_data.matrix_globe_from_mesh);
let mut meshes = Vec::new();
for m in node_data.meshes {
let mesh = convert_mesh(m, &store)?;
meshes.push((
Affine3A::from_mat4((transform / 3_000_000.).as_mat4()),
mesh,
))
}
prefabs.push(store.set(&Prefab {
transform: Some(DAffine3::from_mat4(transform)),
mesh: meshes,
..Default::default()
})?);
}
let entry = store.set(&RespackEntry {
c_prefab: prefabs,
..Default::default()
})?;
let file = std::fs::File::create("/tmp/a.respack")?;
save_full_respack(file, &store, Some(entry))?;
Ok(())
}
struct GeClient {
client: Client,
cachedir: PathBuf,
}
impl GeClient {
pub async fn new() -> Result<Self> {
let cachedir = xdg::BaseDirectories::with_prefix("weareearth")
.unwrap()
.create_cache_directory("download")
.unwrap();
create_dir_all(cachedir.join("BulkMetadata")).await?;
create_dir_all(cachedir.join("NodeData")).await?;
Ok(Self {
cachedir,
client: Client::builder().default_headers(HeaderMap::from_iter([
(HeaderName::from_static("user-agent"), HeaderValue::from_static("Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36")),
(HeaderName::from_static("referer"), HeaderValue::from_static("https://earth.google.com/"))
])).build().unwrap()
})
}
pub async fn download(&self, path: &str) -> Result<Bytes> {
let cachepath = self.cachedir.join(path);
if cachepath.exists() {
debug!("cached {path:?}");
let mut buf = Vec::new();
File::open(cachepath).await?.read_to_end(&mut buf).await?;
Ok(buf.into())
} else {
debug!("download {path:?}");
let res = self
.client
.get(format!("https://kh.google.com/rt/earth/{path}"))
.send()
.await?;
if !res.status().is_success() {
error!("error response: {:?}", res.text().await?);
bail!("error response")
}
let buf = res.bytes().await?;
File::create(cachepath).await?.write_all(&buf).await?;
Ok(buf)
}
}
pub async fn planetoid_metdata(&self) -> Result<PlanetoidMetadata> {
let buf = self.download("PlanetoidMetadata").await?;
Ok(PlanetoidMetadata::decode(buf)?)
}
pub async fn bulk_metadata(&self, path: &str, epoch: u32) -> Result<BulkMetadata> {
let buf = self
.download(&format!("BulkMetadata/pb=!1m2!1s{path}!2u{epoch}"))
.await?;
Ok(BulkMetadata::decode(buf)?)
}
pub async fn node_data(&self, bulk: &BulkMetadata, node: &NodeMetadata) -> Result<NodeData> {
let (path, flags) = unpack_path_and_id(node.path_and_flags());
let texture_format = bulk.default_available_texture_formats();
let imagery_epoch = node.imagery_epoch.unwrap_or(bulk.default_imagery_epoch());
let node_epoch = node
.epoch
.unwrap_or(bulk.head_node_key.as_ref().unwrap().epoch.unwrap()); // ?
let image_epoch_part = if flags & 16 != 0 {
format!("!3u{imagery_epoch}")
} else {
String::new()
};
let url = format!(
"NodeData/pb=!1m2!1s{path}!2u{node_epoch}!2e{texture_format}{image_epoch_part}!4b0"
);
let buf = self.download(&url).await?;
Ok(NodeData::decode(buf)?)
}
}
fn unpack_path_and_id(mut path_id: u32) -> (String, u32) {
let level = 1 + (path_id & 3);
path_id >>= 2;
let mut path = String::new();
for _ in 0..level {
path += &(path_id & 7).to_string();
path_id >>= 3;
}
let flags = path_id;
(path, flags)
}
pub mod proto {
include!(concat!(env!("OUT_DIR"), "/earth.proto.rs"));
}
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