work on orbits (not right yet), orbit camera

1 files changed, 6 insertions, 14 deletions

diff --git a/assets/shaders/tacbody.wgsl b/assets/shaders/tacbody.wgsl
index e8fb653..99392ac 100644
--- a/assets/shaders/tacbody.wgsl
+++ b/assets/shaders/tacbody.wgsl
@@ -31,33 +31,25 @@ fn vs_main(
     var view = camera.view;
     
     //Billboard the circle
-    view[0][0] = 1.0;
-    view[0][1] = 0.0;
-    view[0][2] = 0.0;
-
-    view[1][0] = 0.0;
-    view[1][1] = 1.0;
-    view[1][2] = 0.0;
-
-    view[2][0] = 0.0;
-    view[2][1] = 0.0;
-    view[2][2] = 1.0;
+    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.
-    let model_pos = model.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 * camera.scale), 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_pos.xy * (min_size / 2), 0.0, 0.0);
+        out.clip_position += camera.proj * vec4<f32>(model.position.xy * (min_size / 2), 0.0, 0.0);
     }else{
         out.clip_position = vertex_view_pos;
     }