From b14dd1c1f3e198137fa8b9e0c4f5e56949b11cd0 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Fri, 1 May 2026 16:02:59 -0400
Subject: i don't know how to get the line segments to render right

---
 assets/shaders/tacmap/body.wgsl | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'assets/shaders/tacmap/body.wgsl')

diff --git a/assets/shaders/tacmap/body.wgsl b/assets/shaders/tacmap/body.wgsl
index 7156150..217a0b2 100644
--- a/assets/shaders/tacmap/body.wgsl
+++ b/assets/shaders/tacmap/body.wgsl
@@ -1,6 +1,7 @@
 struct InstanceInput {
     @location(0) position: vec3<f32>,
-    @location(1) radius: f32
+    @location(1) origin: vec3<f32>,
+    @location(2) radius: f32
 };
 
 struct VertexOutput {
@@ -47,7 +48,17 @@ fn vs_main(
 
     //Scale the world around the camera scale and translate about the camera's
     //absolute (/target) position
-    let instance_pos = (instance.position - camera.pos) * camera.scale;
+    let relative_pos = instance.position * camera.scale;
+    let origin_pos = (instance.origin - camera.pos) * camera.scale;
+
+    if all(relative_pos != origin_pos) {
+        if length(relative_pos) < 0.01 {
+            out.clip_position = vec4<f32>(0.0, 0.0, 0.0, 1.0);
+            return out;
+        }
+    }
+
+    let instance_pos = relative_pos + origin_pos;
 
     let view_proj = camera.proj * view;
 
-- 
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