Plane

protocols/schemas/shapes.prs

@@ -4,13 +4,15 @@ Sprite = <sprite @name string @shape Shape> .
 
 Shape = Mesh / Light / Scale / Move / Rotate / @many [Shape ...] / Texture / Color / Name / Floor / Nonphysical / CSG .
 
-Mesh = Sphere / Box / Ground .
+Mesh = Sphere / Box / Ground / Plane .
 
 Sphere = <sphere> .
 Box = <box> .
-Light = <hemispheric-light @v Vector3> .
+Plane = <plane> .
 Ground = <ground @size Vector2> .
 
+Light = <hemispheric-light @v Vector3> .
+
 Vector2 = <v @x double @y double> .
 Vector3 = <v @x double @y double @z double> .
 Quaternion = <q @a double @b double @c double @d double> .

scene/example.pr

@@ -39,6 +39,14 @@
     <floor
      <sphere>>>>>>
 
+<sprite "note"
+ <texture ["https://www.gravatar.com/avatar/42b16d07d26467b3b1c06affe16413a2?s=256"
+           <v 1.0 1.0>
+           <v 0.0 0.0>
+           1.0]
+  <move <v 0.0 1.0 0.0>
+   <plane>>>>
+
 <sprite "plans"
  <texture ["plans/signal-2022-12-27-125451_002.jpeg"]
   <move <v 0.0 1.0 -10.0>

src/shapes.ts

@@ -130,6 +130,7 @@ function buildTexture(name: string, scene: Scene, spec: Shapes.TextureSpec): Mat
             break;
         case "uvAlpha":
             mat.alpha = spec.alpha;
+            tex.hasAlpha = true;
             /* FALL THROUGH */
         case "uv": {
             const scale = v2(spec.scale);
@@ -165,6 +166,10 @@ export function build(name: string, scene: Scene, shape: Shapes.Shape, customize
                         MeshBuilder.CreateGround(name, { width: v.x, height: v.y }, scene));
                     break;
                 }
+
+                case "Plane":
+                    t = new ShapeTree<Mesh>(scene, shape, MeshBuilder.CreatePlane(name, {}, scene));
+                    break;
             }
             applyCustomizer(t, customize);
             return t;