Visulize mesh outside of build volume

TODO.md

@@ -93,3 +93,4 @@
 - [ ] Dont fail to load an stl without normals
 - [ ] GPU accalration for post processing effect?
 - [ ] Fix requiring viewport to be visible to render preview image
+- [x] Visulize mesh outside of bounging box

mslicer/src/render/pipelines/model.rs

@@ -32,6 +32,7 @@ pub struct ModelPipeline {
 struct ModelUniforms {
     transform: Matrix4<f32>,
     model_transform: Matrix4<f32>,
+    build_volume: Vector3<f32>,
     model_color: Vector4<f32>,
     camera_position: Vector3<f32>,
     camera_target: Vector3<f32>,
@@ -111,6 +112,7 @@ impl ModelPipeline {
             let uniforms = ModelUniforms {
                 transform: resources.transform * model_transform,
                 model_transform,
+                build_volume: resources.bed_size,
                 model_color: model.color.to_normalized_gamma_f32().into(),
                 camera_position: resources.camera.position(),
                 camera_target: resources.camera.target,

mslicer/src/shaders/model.wgsl

@@ -3,6 +3,7 @@
 struct Context {
     transform: mat4x4<f32>,
     model_transform: mat4x4<f32>,
+    build_volume: vec3<f32>,
     model_color: vec4<f32>,
     camera_position: vec3<f32>,
     camera_target: vec3<f32>,
@@ -35,6 +36,10 @@ fn frag(in: VertexOutput) -> @location(0) vec4<f32> {
     let dx = dpdx(in.world_position);
     let normal = normalize(cross(dy, dx));
 
+    if outside_build_volume(in.world_position) {
+        return vec4<f32>(1.0, 0.0, 0.0, 1.0);
+    }
+
     if context.render_style == 0 {
         return vec4<f32>(normal, 1.0);
     } else {
@@ -49,3 +54,10 @@ fn frag(in: VertexOutput) -> @location(0) vec4<f32> {
         return vec4<f32>(intensity, context.model_color.a);
     }
 }
+
+fn outside_build_volume(pos: vec3<f32>) -> bool {
+    let build = context.build_volume / 2.0;
+    return pos.x < -build.x || pos.x > build.x
+        || pos.y < -build.y || pos.y > build.y
+        || pos.z < 0.0 || pos.x > context.build_volume.z;
+}