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use crate::{error::NoDataError, prelude::*};
use anyhow::Result;
use parking_lot::Mutex;
use std::sync::Arc;
use vulkano::buffer::Subbuffer;
/// The custom model of an object made of vertices and indices.
#[derive(Clone, Debug, PartialEq)]
pub struct ModelData {
vertex_sub_buffer: Subbuffer<[Vertex]>,
index_sub_buffer: Subbuffer<[u32]>,
data: Data,
}
impl ModelData {
/// Makes a new model with given data.
///
/// Can return an error in case the GPU memory is full.
pub fn new(data: Data) -> Result<Self> {
Self::new_from_loader(data, RESOURCES.loader())
}
pub(crate) fn new_from_loader(data: Data, loader: &Arc<Mutex<Loader>>) -> Result<Self> {
if data.is_empty() {
return Err(NoDataError.into());
}
let loader = loader.lock();
let vertex_sub_buffer = loader
.vertex_buffer_allocator
.allocate_slice(data.vertices().len() as _)?;
let index_sub_buffer = loader
.index_buffer_allocator
.allocate_slice(data.indices().len() as _)?;
vertex_sub_buffer.write()?.copy_from_slice(data.vertices());
index_sub_buffer.write()?.copy_from_slice(data.indices());
Ok(Self {
vertex_sub_buffer,
index_sub_buffer,
data,
})
}
/// Returns the index and vertex data of this object.
pub fn data(&self) -> &Data {
&self.data
}
/// Returns the size of this model in number of indices.
pub fn size(&self) -> usize {
self.data.indices().len()
}
//TODO(Letronix624): This along with texture updates comes in the future when we optimize.
// /// Writes data into the model influencing the model data of every instance of this model.
// ///
// /// Returns an error if the data given is bigger than the size of this objects vertices and indices.
// pub fn write(&self, data: Data) -> Result<()> {
// if self.vertex_sub_buffer.len() < data.vertices().len() as u64
// || self.index_sub_buffer.len() < data.indices().len() as u64
// {
// return Err(anyhow::Error::msg("Writing into a model requires the given data size to match with the current data size. Load a new model instead."));
// }
// self.vertex_sub_buffer
// .write()?
// .copy_from_slice(data.vertices());
// self.index_sub_buffer
// .write()?
// .copy_from_slice(data.indices());
// Ok(())
// }
pub(crate) fn vertex_buffer(&self) -> Subbuffer<[Vertex]> {
self.vertex_sub_buffer.clone()
}
pub(crate) fn index_buffer(&self) -> Subbuffer<[u32]> {
self.index_sub_buffer.clone()
}
}
/// The model of an appearance.
#[derive(Clone, Debug, PartialEq)]
pub enum Model {
/// Your own model data.
Custom(ModelData),
/// A default model most useful for most things.
///
/// A square going from -1.0 to 1.0 in both x and y.
Square,
/// A triangle going from -1.0 to 1.0 in both x and y.
Triangle,
}
impl Default for Model {
fn default() -> Self {
Self::Square
}
}