From 961f8c6d405c9c6fcf9aaf4fb6f199b0e5c60d88 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Thu, 30 Apr 2026 10:06:32 -0400
Subject: add orbit rendering for bodies

---
 assets/shaders/tacbody.wgsl | 72 ---------------------------------------------
 1 file changed, 72 deletions(-)
 delete mode 100644 assets/shaders/tacbody.wgsl

(limited to 'assets/shaders/tacbody.wgsl')

diff --git a/assets/shaders/tacbody.wgsl b/assets/shaders/tacbody.wgsl
deleted file mode 100644
index 62adcdd..0000000
--- a/assets/shaders/tacbody.wgsl
+++ /dev/null
@@ -1,72 +0,0 @@
-struct VertexInput {
-    @location(0) position: vec3<f32>
-};
-
-struct InstanceInput {
-    @location(2) position: vec3<f32>,
-    @location(3) radius: f32
-};
-
-struct VertexOutput {
-    @builtin(position) clip_position: vec4<f32>,
-    @location(0) local_position: vec3<f32>
-};
-
-struct CameraUniform {
-    view: mat4x4<f32>,
-    proj: mat4x4<f32>,
-    scale: f32
-};
-
-@group(0) @binding(0)
-var<uniform> camera: CameraUniform;
-
-@vertex
-fn vs_main(
-    model: VertexInput,
-    instance: InstanceInput
-) -> VertexOutput {
-    var out: VertexOutput;
-
-    var view = camera.view;
-    
-    //Billboard the circle
-    let camera_right = vec3<f32>(view[0][0], view[1][0], view[2][0]);
-    let camera_up = vec3<f32>(view[0][1], view[1][1], view[2][1]);
-    let model_pos = camera_right * model.position.x +
-                    camera_up * model.position.y;
-
-    let min_size = 0.025;
-
-    //Scale the world around the camera scale and translate about the camera's
-    //absolute (/target) position
-    let instance_pos = (instance.position) * camera.scale;
-
-    let view_proj = camera.proj * view;
-
-    let center_view_pos = view_proj * vec4<f32>(instance_pos, 1.0);
-    let vertex_view_pos = view_proj * vec4<f32>(instance_pos + (model_pos * instance.radius * camera.scale), 1.0);
-
-    let vertex_dist = length(vertex_view_pos - center_view_pos) / center_view_pos.w;
-    if vertex_dist < min_size {
-        out.clip_position = center_view_pos / center_view_pos.w;
-        out.clip_position += camera.proj * vec4<f32>(model.position.xy * (min_size / 2.0), 0.0, 0.0);
-    }else{
-        out.clip_position = vertex_view_pos;
-    }
-
-    out.local_position = model.position;
-
-    return out;
-}
-
-@fragment
-fn fs_main(in: VertexOutput
-) -> @location(0) vec4<f32> {
-    let point_dist = length(in.local_position);
-    var alpha = 1.0;
-    if point_dist > 1.0 {
-        alpha = 0.0;
-    }
-    return vec4<f32>(1.0, 1.0, 1.0, alpha);
-}
-- 
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