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use crate::proto::Mesh;
use anyhow::Result;
use glam::vec3a;
use weareshared::{packets::Resource, resources::MeshPart, store::ResourceStore};
pub fn convert_mesh(m: Mesh, store: &ResourceStore) -> Result<Resource<MeshPart>> {
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));
}
Ok(store.set(&MeshPart {
index: Some(store.set(&index)?),
va_position: Some(store.set(&positions)?),
g_double_sided: Some(()),
..Default::default()
})?)
}
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