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#![feature(array_chunks)]
use anyhow::{Result, bail};
use glam::Vec3;
use log::{debug, error};
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, create_dir_all},
io::{AsyncReadExt, AsyncWriteExt},
};
use weareshared::{
Affine3A, Vec3A,
resources::{MeshPart, Prefab, RespackEntry},
respack::save_full_respack,
store::ResourceStore,
vec3a,
};
#[tokio::main]
async fn main() -> Result<()> {
env_logger::init_from_env("LOG");
let c = GeClient::new().await?;
let entry = c.planetoid_metdata().await?;
eprintln!("{:#?}", entry);
let mut bulk = c
.bulk_metadata("", entry.root_node_metadata.unwrap().bulk_metadata_epoch())
.await?;
eprintln!("{:#?}", bulk);
let store = ResourceStore::new_memory();
let mut meshes = Vec::new();
for node_meta in &bulk.node_metadata {
let Ok(mut node_data) = c.node_data(&bulk, &node_meta).await else {
continue;
};
for m in node_data.meshes {
let mut index_strip = Vec::new();
let strip_len = m.indices[0];
let mut zeros = 0;
for i in 0..strip_len {
let val = m.indices[i as usize + 1];
index_strip.push((zeros - val) as u32);
if val == 0 {
zeros += 1;
}
}
let mut index = Vec::new();
for i in 0..index_strip.len() - 2 {
if i & 1 == 0 {
index.push([index_strip[i + 0], index_strip[i + 1], index_strip[i + 2]]);
} else {
index.push([index_strip[i + 0], index_strip[i + 2], index_strip[i + 1]]);
}
}
let mut positions = Vec::new();
let vert = m.vertices();
let vertex_count = vert.len() / 3;
let (mut x, mut y, mut z) = (0u8, 0u8, 0u8);
for i in 0..vertex_count {
x = x.wrapping_add(vert[vertex_count * 0 + i]);
y = y.wrapping_add(vert[vertex_count * 1 + i]);
z = z.wrapping_add(vert[vertex_count * 2 + i]);
positions.push(vec3a(x as f32, y as f32, z as f32));
}
// eprintln!("{index:?}");
// eprintln!("{positions:?}");
meshes.push((
Affine3A::from_scale(Vec3::splat(0.01)),
store.set(&MeshPart {
index: Some(store.set(&index)?),
va_position: Some(store.set(&positions)?),
g_double_sided: Some(()),
..Default::default()
})?,
))
}
}
eprintln!("{}", meshes.len());
let prefab = store.set(&Prefab {
mesh: meshes,
..Default::default()
})?;
let entry = store.set(&RespackEntry {
c_prefab: vec![prefab],
..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 = 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"));
}
|
