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|
use scene::ParamValue;
use serde::{Deserialize, Serialize};
use std::collections::BTreeMap;
use crate::color::{LinearRgba, parse_color_to_linear_rgba};
use crate::types::AnimationInterpolation;
#[derive(Serialize, Deserialize, Clone, Copy, Debug, Eq, PartialEq)]
#[serde(rename_all = "camelCase")]
pub enum ChannelValueKind {
Scalar,
Discrete,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ChannelComponentDefinition {
pub key: String,
pub value_kind: ChannelValueKind,
pub default_interpolation: AnimationInterpolation,
}
#[derive(Clone, Debug, PartialEq)]
pub enum ChannelLayout {
Leaf(ChannelComponentDefinition),
Composite(Vec<ChannelComponentDefinition>),
}
impl ChannelLayout {
pub fn components(&self) -> &[ChannelComponentDefinition] {
match self {
ChannelLayout::Leaf(component) => std::slice::from_ref(component),
ChannelLayout::Composite(components) => components,
}
}
pub fn decompose(&self, value: &ParamValue) -> Option<BTreeMap<String, ParamValue>> {
match self {
ChannelLayout::Leaf(component) => {
let mut values = BTreeMap::new();
values.insert(component.key.clone(), value.clone());
Some(values)
}
ChannelLayout::Composite(_) => {
let ParamValue::String(color) = value else {
return None;
};
let LinearRgba { r, g, b, a } = parse_color_to_linear_rgba(color)?;
let mut values = BTreeMap::new();
values.insert("r".to_string(), ParamValue::Number(r));
values.insert("g".to_string(), ParamValue::Number(g));
values.insert("b".to_string(), ParamValue::Number(b));
values.insert("a".to_string(), ParamValue::Number(a));
Some(values)
}
}
}
}
pub fn number_channel_layout() -> ChannelLayout {
ChannelLayout::Leaf(ChannelComponentDefinition {
key: "value".to_string(),
value_kind: ChannelValueKind::Scalar,
default_interpolation: AnimationInterpolation::Linear,
})
}
pub fn boolean_channel_layout() -> ChannelLayout {
ChannelLayout::Leaf(ChannelComponentDefinition {
key: "value".to_string(),
value_kind: ChannelValueKind::Discrete,
default_interpolation: AnimationInterpolation::Hold,
})
}
pub fn string_channel_layout() -> ChannelLayout {
ChannelLayout::Leaf(ChannelComponentDefinition {
key: "value".to_string(),
value_kind: ChannelValueKind::Discrete,
default_interpolation: AnimationInterpolation::Hold,
})
}
pub fn color_channel_layout() -> ChannelLayout {
let component = |key: &str| ChannelComponentDefinition {
key: key.to_string(),
value_kind: ChannelValueKind::Scalar,
default_interpolation: AnimationInterpolation::Linear,
};
ChannelLayout::Composite(vec![
component("r"),
component("g"),
component("b"),
component("a"),
])
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn leaf_decompose_wraps_value_under_component_key() {
let layout = number_channel_layout();
let values = layout.decompose(&ParamValue::Number(3.0)).unwrap();
assert_eq!(values.get("value"), Some(&ParamValue::Number(3.0)));
}
#[test]
fn color_decompose_parses_hex_into_linear_components() {
let layout = color_channel_layout();
let values = layout
.decompose(&ParamValue::String("#ff0000".to_string()))
.unwrap();
assert_eq!(values.get("r"), Some(&ParamValue::Number(1.0)));
assert_eq!(values.get("g"), Some(&ParamValue::Number(0.0)));
assert_eq!(values.get("a"), Some(&ParamValue::Number(1.0)));
assert!(
layout
.decompose(&ParamValue::Number(1.0))
.is_none()
);
}
}
|
