From c11845db90f7767ce15904f93fc9e977c82f12de Mon Sep 17 00:00:00 2001
From: Joe Ardent <code@ardent.nebcorp.com>
Date: Wed, 26 Jan 2022 13:33:48 -0800
Subject: [PATCH] Use bevy_polyline to wireframe the big sphere.

---
 src/glamor.rs | 46 ++++++++++++++++++++++++++++++++++++++++------
 src/lights.rs |  4 ++--
 2 files changed, 42 insertions(+), 8 deletions(-)

diff --git a/src/glamor.rs b/src/glamor.rs
index 38d35ad..8d2f8f9 100644
--- a/src/glamor.rs
+++ b/src/glamor.rs
@@ -1,20 +1,52 @@
 use bevy::{
     pbr::wireframe::{Wireframe, WireframeConfig, WireframePlugin},
     prelude::*,
-    render::{options::WgpuOptions, render_resource::WgpuFeatures},
+    render::{
+        mesh::{Indices, VertexAttributeValues},
+        options::WgpuOptions,
+        render_resource::WgpuFeatures,
+    },
 };
+use bevy_polyline::{Polyline, PolylineBundle, PolylineMaterial, PolylinePlugin};
 use rand::{thread_rng, Rng};
 
 use crate::{geometry::CyberSphere, lights::AnimateCyberLightWireframe};
 
 fn wireframe_planet(
     mut commands: Commands,
-    mut wireframe_config: ResMut<WireframeConfig>,
-    query: Query<Entity, With<CyberSphere>>,
+    meshes: Res<Assets<Mesh>>,
+    mut polylines: ResMut<Assets<Polyline>>,
+    mut polymats: ResMut<Assets<PolylineMaterial>>,
+    query: Query<&Handle<Mesh>, With<CyberSphere>>,
 ) {
-    let ent = query.single();
-    wireframe_config.global = false;
-    commands.entity(ent).insert(Wireframe);
+    let handle = query.single();
+    let mesh = meshes.get(handle).unwrap();
+    let vertices = mesh.attribute(Mesh::ATTRIBUTE_POSITION).unwrap();
+
+    let mut pts = Vec::with_capacity(vertices.len());
+
+    if let VertexAttributeValues::Float32x3(verts) = vertices {
+        let indices = mesh.indices().unwrap();
+        if let Indices::U32(indices) = indices {
+            for i in indices.iter() {
+                let v = verts[*i as usize];
+                let v = Vec3::from_slice(&v);
+                pts.push(v);
+            }
+        }
+    }
+
+    if !pts.is_empty() {
+        commands.spawn_bundle(PolylineBundle {
+            polyline: polylines.add(Polyline { vertices: pts }),
+            material: polymats.add(PolylineMaterial {
+                width: 6.0,
+                color: Color::hsla(292.0, 1.0, 0.60, 1.0),
+                perspective: false,
+            }),
+            ..Default::default()
+        });
+    }
 }
 
 fn wireframify_lights(
@@ -45,8 +77,10 @@ impl Plugin for CyberGlamorPlugin {
             features: WgpuFeatures::POLYGON_MODE_LINE,
             ..Default::default()
         })
+        .insert_resource(WireframeConfig { global: false })
         .add_startup_system_to_stage(StartupStage::PostStartup, wireframe_planet)
         .add_system(wireframify_lights)
+        .add_plugin(PolylinePlugin)
         .add_plugin(WireframePlugin);
     }
 }
diff --git a/src/lights.rs b/src/lights.rs
index 216d0a4..3a3d046 100644
--- a/src/lights.rs
+++ b/src/lights.rs
@@ -22,8 +22,8 @@ fn spawn_moving_lights(
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
     let rng = &mut thread_rng();
-    // spawn 200 orbiting bisexual lights
-    for _ in 0..255 {
+    // spawn orbiting bisexual lights
+    for _ in 0..511 {
         // mechanics
         let axis = crate::random_unit_vec(rng);
         let angle = rng.gen_range(0.0..TAU);