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use std::ops;
use json;
use {Gltf, Loaded};
pub use json::buffer::Target;
#[derive(Clone, Debug)]
pub struct Data<'a> {
parent: Loaded<'a, Buffer<'a>>,
range: Option<ops::Range<usize>>,
}
impl<'a> ops::Deref for Data<'a> {
type Target = [u8];
fn deref(&self) -> &Self::Target {
let slice = self.parent.source.source_buffer(&self.parent.item);
match self.range.clone() {
Some(range) => &slice[range],
None => &slice[..],
}
}
}
#[derive(Clone, Debug)]
pub struct Buffer<'a> {
gltf: &'a Gltf,
index: usize,
json: &'a json::buffer::Buffer,
}
#[derive(Clone, Debug)]
pub struct View<'a> {
gltf: &'a Gltf,
index: usize,
json: &'a json::buffer::View,
parent: Buffer<'a>,
}
impl<'a> Buffer<'a> {
pub(crate) fn new(
gltf: &'a Gltf,
index: usize,
json: &'a json::buffer::Buffer,
) -> Self {
Self {
gltf: gltf,
index: index,
json: json,
}
}
pub fn index(&self) -> usize {
self.index
}
pub fn as_json(&self) -> &json::buffer::Buffer {
self.json
}
pub fn length(&self) -> usize {
self.json.byte_length as usize
}
#[cfg(feature = "names")]
pub fn name(&self) -> Option<&str> {
self.json.name.as_ref().map(String::as_str)
}
pub fn extras(&self) -> &json::Extras {
&self.json.extras
}
}
impl<'a> Loaded<'a, Buffer<'a>> {
pub fn data(&self) -> Data {
let parent = self.clone();
let range = None;
Data {
parent,
range,
}
}
}
impl<'a> View<'a> {
pub(crate) fn new(
gltf: &'a Gltf,
index: usize,
json: &'a json::buffer::View,
) -> Self {
let parent = gltf.buffers().nth(json.buffer.value()).unwrap();
Self {
gltf,
index,
json,
parent,
}
}
pub fn index(&self) -> usize {
self.index
}
pub fn as_json(&self) -> &json::buffer::View {
self.json
}
pub fn buffer(&self) -> Buffer<'a> {
self.gltf.buffers().nth(self.json.buffer.value()).unwrap()
}
pub fn length(&self) -> usize {
self.json.byte_length as usize
}
pub fn offset(&self) -> usize {
self.json.byte_offset as usize
}
pub fn stride(&self) -> Option<usize> {
self.json.byte_stride.map(|x| x.0 as usize)
}
#[cfg(feature = "names")]
pub fn name(&self) -> Option<&str> {
self.json.name.as_ref().map(String::as_str)
}
pub fn target(&self) -> Option<Target> {
self.json.target.map(|target| target.unwrap())
}
pub fn extras(&self) -> &json::Extras {
&self.json.extras
}
}
impl<'a> Loaded<'a, View<'a>> {
pub fn data(&'a self) -> Data<'a> {
let begin = self.offset();
let end = begin + self.length();
let range = Some(begin..end);
let parent = Loaded {
item: self.parent.clone(),
source: self.source,
};
Data {
parent,
range,
}
}
}