Add basic box brush generator

editor/src/main.rs

@@ -1,11 +1,11 @@
 use csg::{
-    brush::{self, Brush, BrushPlane, MaterialId, TextureProjection},
-    glam::{self},
+    brush::{Brush, BrushPlane, MaterialId, TextureProjection},
+    glam::{self, Vec3},
     plane::Plane,
 };
 
-fn main() {
-    let points = vec![
+fn generate_box_brush(position: Vec3, extent: Vec3) -> Brush {
+    let normals = vec![
         glam::vec3(1.0, 0.0, 0.0),
         glam::vec3(-1.0, 0.0, 0.0),
         glam::vec3(0.0, 1.0, 0.0),
@@ -15,9 +15,11 @@ fn main() {
     ];
 
     let mut brush_planes = vec![];
-    for point in &points {
+    for normal in &normals {
+        let point = position + *normal * extent;
+
         brush_planes.push(BrushPlane {
-            plane: Plane::from_point_normal(*point, *point),
+            plane: Plane::from_point_normal(point, *normal),
             material: MaterialId("Epic".to_string()),
             tex_projection: TextureProjection::default(),
         });
@@ -25,9 +27,13 @@ fn main() {
         println!("Plane: {:?}", brush_planes.last().unwrap().plane);
     }
 
-    let brush = Brush {
+    Brush {
         planes: brush_planes,
-    };
+    }
+}
+
+fn main() {
+    let brush = generate_box_brush(Vec3::new(1.0, 0.0, 0.0), Vec3::new(1.0, 2.0, 1.0));
     let vs = brush.get_vertices();
 
     println!("Vertices: {vs:?}");