mittens_engine/engine/ecs/component/
light_quantization.rs

1use crate::engine::ecs::ComponentId;
2use crate::engine::ecs::component::Component;
3
4/// Per-renderable light quantization control for the toon shader.
5///
6/// This controls `MaterialUBO.quant_steps` (see `assets/shaders/toon-mesh.frag`).
7/// Intended to be attached as a descendant of a `RenderableComponent`.
8#[derive(Debug, Clone, Copy)]
9pub struct LightQuantizationComponent {
10    pub quant_steps: f32,
11}
12
13impl LightQuantizationComponent {
14    /// Default toon quantization steps.
15    pub const DEFAULT_STEPS: f32 = 3.0;
16
17    pub fn new() -> Self {
18        Self {
19            quant_steps: Self::DEFAULT_STEPS,
20        }
21    }
22
23    pub fn steps(steps: f32) -> Self {
24        Self { quant_steps: steps }
25    }
26
27    pub fn with_steps(mut self, steps: f32) -> Self {
28        self.quant_steps = steps;
29        self
30    }
31}
32
33impl Default for LightQuantizationComponent {
34    fn default() -> Self {
35        Self::new()
36    }
37}
38
39impl Component for LightQuantizationComponent {
40    fn name(&self) -> &'static str {
41        "light_quantization"
42    }
43
44    fn as_any(&self) -> &dyn std::any::Any {
45        self
46    }
47
48    fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
49        self
50    }
51
52    fn init(&mut self, emit: &mut dyn crate::engine::ecs::SignalEmitter, component: ComponentId) {
53        emit.push_intent_now(
54            component,
55            crate::engine::ecs::IntentValue::RegisterLightQuantization {
56                component_ids: vec![component],
57            },
58        );
59    }
60
61    fn to_mms_ast(
62        &self,
63        _world: &crate::engine::ecs::World,
64    ) -> crate::scripting::ast::ComponentExpression {
65        use crate::engine::ecs::component::ce_helpers::*;
66        ce_call(
67            "LightQuantization",
68            "steps",
69            vec![num(self.quant_steps as f64)],
70        )
71    }
72}
mittens_engine/engine/ecs/component/light_quantization.rs

mittens_engine/engine/ecs/component/
light_quantization.rs
