Add the default particle helper system

nodeEditor/src/components/preview/previewManager.ts

@@ -235,7 +235,7 @@ export class PreviewManager {
                 break;
             }
             case NodeMaterialModes.Particle: {
-                this._camera.radius = this._globalState.previewType === PreviewType.Explosion ? 50 : 20;
+                this._camera.radius = this._globalState.previewType === PreviewType.Explosion ? 50 : this._globalState.previewType === PreviewType.DefaultParticleSystem ? 6 : 20;
                 this._camera.upperRadiusLimit = 5000;
                 break;
             }
@@ -316,6 +316,10 @@ export class PreviewManager {
                 }
             } else if (this._globalState.mode === NodeMaterialModes.Particle) {
                 switch (this._globalState.previewType) {
+                    case PreviewType.DefaultParticleSystem:
+                        this._particleSystem = ParticleHelper.CreateDefault(new Vector3(0, 0, 0), 500, this._scene) as ParticleSystem;
+                        this._particleSystem.start();
+                        break;
                     case PreviewType.Bubbles:
                         this._particleSystem = new ParticleSystem("particles", 4000, this._scene);
                         this._particleSystem.particleTexture = new Texture("https://assets.babylonjs.com/particles/textures/explosion/Flare.png", this._scene);

nodeEditor/src/components/preview/previewMeshControlComponent.tsx

@@ -105,6 +105,7 @@ export class PreviewMeshControlComponent extends React.Component<IPreviewMeshCon
         ];
 
         var particleTypeOptions = [
+            { label: "Default", value: PreviewType.DefaultParticleSystem },
             { label: "Bubbles", value: PreviewType.Bubbles },
             { label: "Explosion", value: PreviewType.Explosion },
             { label: "Fire", value: PreviewType.Fire },

nodeEditor/src/components/preview/previewType.ts

@@ -8,6 +8,7 @@ export enum PreviewType {
     ShaderBall,
 
     // Particle systems
+    DefaultParticleSystem,
     Bubbles,
     Smoke,
     Rain,