Add Lerp trait impls for outline volume and stencil types.
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@ -18,6 +18,7 @@ bevy = { version = "0.9", default-features = false, features = [
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"bevy_core_pipeline",
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] }
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bitfield = "0.14"
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interpolation = "0.2"
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thiserror = "1.0"
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[dev-dependencies]
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33
src/lib.rs
33
src/lib.rs
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@ -32,6 +32,7 @@ use bevy::render::render_phase::{sort_phase_system, AddRenderCommand, DrawFuncti
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use bevy::render::render_resource::{SpecializedMeshPipelines, VertexFormat};
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use bevy::render::{RenderApp, RenderStage};
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use bevy::transform::TransformSystem;
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use interpolation::Lerp;
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use crate::draw::{
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queue_outline_stencil_mesh, queue_outline_volume_mesh, DrawOutline, DrawStencil,
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@ -86,6 +87,16 @@ impl ExtractComponent for OutlineStencil {
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}
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}
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impl Lerp for OutlineStencil {
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type Scalar = f32;
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fn lerp(&self, other: &Self, scalar: &Self::Scalar) -> Self {
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OutlineStencil {
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offset: self.offset.lerp(&other.offset, scalar),
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}
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}
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}
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/// A component for rendering outlines around meshes.
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#[derive(Clone, Component, Default)]
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pub struct OutlineVolume {
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@ -97,6 +108,28 @@ pub struct OutlineVolume {
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pub colour: Color,
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}
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impl Lerp for OutlineVolume {
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type Scalar = f32;
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fn lerp(&self, other: &Self, scalar: &Self::Scalar) -> Self {
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OutlineVolume {
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visible: if *scalar >= 0.5 {
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other.visible
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} else {
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self.visible
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},
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width: self.width.lerp(&other.width, scalar),
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colour: {
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let [r, g, b, a] = self
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.colour
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.as_linear_rgba_f32()
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.lerp(&other.colour.as_linear_rgba_f32(), scalar);
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Color::rgba_linear(r, g, b, a)
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},
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}
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}
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}
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/// A bundle for rendering stenciled outlines around meshes.
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#[derive(Bundle, Clone, Default)]
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pub struct OutlineBundle {
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