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|
use std::{path::PathBuf, str::FromStr};
use config::File;
use serde::Deserialize;
use structopt::StructOpt;
use crate::error::TracerError;
#[derive(Default, Debug, Deserialize)]
pub struct Screen {
pub height: usize,
pub width: usize,
}
#[derive(Default, Debug, Deserialize)]
pub struct RenderData {
pub samples: usize,
pub max_depth: usize,
pub num_threads_width: usize,
pub num_threads_height: usize,
pub scale: usize,
}
#[derive(StructOpt, Debug)]
#[structopt(name = "racer-tracer")]
pub struct Args {
#[structopt(
short = "c",
long = "config",
default_value = "./config.yml",
env = "CONFIG"
)]
pub config: String,
#[structopt(short = "s", long = "scene")]
pub scene: Option<String>,
#[structopt(long = "image-action")]
pub image_action: Option<ImageAction>,
}
impl TryFrom<Args> for Config {
type Error = TracerError;
fn try_from(args: Args) -> Result<Self, TracerError> {
Config::from_file(args.config).and_then(|mut cfg| {
if let Some(image_action) = args.image_action {
cfg.image_action = image_action;
}
if let Some(scene) = args.scene {
if scene == "random" {
cfg.loader = SceneLoader::Random;
} else {
let path = PathBuf::from(scene);
cfg.loader = path
.extension()
.map(|s| s.to_string_lossy())
.ok_or_else(|| {
TracerError::ArgumentParsingError(format!(
"Could not get extension from scene file: {}",
path.display()
))
})
.and_then(|p| match p.as_ref() {
"yml" => Ok(SceneLoader::Yml { path: path.clone() }),
_ => Err(TracerError::ArgumentParsingError(format!(
"Could not find a suitable scene loader for file: {}",
path.display()
))),
})?;
};
}
Ok(cfg)
})
}
}
#[derive(StructOpt, Debug, Clone, Deserialize, Default)]
pub enum SceneLoader {
#[default]
None,
Yml {
path: PathBuf,
},
Random,
}
#[derive(StructOpt, Debug, Clone, Deserialize, Default)]
pub enum ImageAction {
#[default]
WaitForSignal,
SavePng,
}
impl FromStr for ImageAction {
type Err = TracerError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"png" => Ok(ImageAction::SavePng),
"show" => Ok(ImageAction::WaitForSignal),
_ => Ok(ImageAction::WaitForSignal),
}
}
}
#[derive(Default, Debug, Deserialize)]
pub struct Config {
#[serde(default)]
pub preview: RenderData,
#[serde(default)]
pub render: RenderData,
#[serde(default)]
pub screen: Screen,
#[serde(default)]
pub loader: SceneLoader,
#[serde(default)]
pub image_action: ImageAction,
#[serde(default)]
pub image_output_dir: Option<PathBuf>,
}
impl Config {
pub fn from_file(file: String) -> Result<Self, TracerError> {
config::Config::builder()
.add_source(File::from(file.as_ref()))
.build()
.map_err(|e| TracerError::Configuration(file.clone(), e.to_string()))?
.try_deserialize()
.map_err(|e| TracerError::Configuration(file, e.to_string()))
}
}
|
