Add an option to highlight particles

frontend/src/app/particles/components/frames/frames.component.html

@@ -11,11 +11,16 @@
             <h3>Particles in {{ frameId }}</h3>
             <div class="particles-list">
               <div *ngFor="let particle of particleData.frames[frameId]; let i = index" class="particle-item">
-                    <span>Particle {{ i + 1 }}: ({{ particle.x.toFixed(2) }}, {{ particle.y.toFixed(2) }}
-                      , {{ particle.z.toFixed(2) }})</span>
-                <button mat-icon-button color="warn" (click)="removeParticle(frameId, i)">
+                <span class="particle-item-text">
+                  Particle {{ i + 1 }}: ({{ particle.x.toFixed(2) }}, {{ particle.y.toFixed(2) }}
+                  , {{ particle.z.toFixed(2) }})
+                </span>
+                <button mat-icon-button (click)="removeParticle(frameId, i)">
                   <mat-icon>delete</mat-icon>
                 </button>
+                <button mat-icon-button (click)="highlightParticle(frameId, i)">
+                  <mat-icon>lightbulb</mat-icon>
+                </button>
               </div>
               <div *ngIf="!particleData.frames[frameId] || particleData.frames[frameId].length === 0"
                    class="no-particles">

frontend/src/app/particles/components/frames/frames.component.scss

@@ -17,10 +17,14 @@
 
 .particle-item {
   display: flex;
-  justify-content: space-between;
   align-items: center;
   padding: 8px;
   border-bottom: 1px solid #eee;
+  gap: 10px;
+}
+
+.particle-item-text {
+  flex-grow: 1;
 }
 
 .particle-item:last-child {

frontend/src/app/particles/components/frames/frames.component.ts

@@ -83,4 +83,7 @@ export class FramesComponent {
   }
 
 
+  public highlightParticle(frameId: string, i: number) {
+    this.particleManagerService.highlightParticle(frameId, i);
+  }
 }

frontend/src/app/particles/services/particle-manager.service.ts

@@ -1,7 +1,7 @@
-import { Injectable } from '@angular/core';
+import {Injectable} from '@angular/core';
 import * as THREE from 'three';
-import { RendererService } from './renderer.service';
-import { ParticleData, ParticleInfo, ParticleType } from '../models/particle.model';
+import {RendererService} from './renderer.service';
+import {ParticleData, ParticleInfo, ParticleType} from '../models/particle.model';
 
 /**
  * Service responsible for managing particles in the scene
@@ -32,7 +32,8 @@ export class ParticleManagerService {
   private frames: string[] = ['frame1'];
   private selectedColor: string = '#ff0000';
 
-  constructor(private rendererService: RendererService) {}
+  constructor(private rendererService: RendererService) {
+  }
 
   /**
    * Adds a particle at the specified position
@@ -120,6 +121,51 @@ export class ParticleManagerService {
     }
   }
 
+  highlightParticle(frameId: string, index: number): void {
+    if (!(this.particleData.frames[frameId] && this.particleData.frames[frameId].length > index)) {
+      return;
+    }
+    const particleInfo = this.particleData.frames[frameId][index];
+    const colorParts = particleInfo.color.split(',');
+    const color = new THREE.Color(
+      parseFloat(colorParts[0]),
+      parseFloat(colorParts[1]),
+      parseFloat(colorParts[2])
+    );
+    const particleMaterial = new THREE.MeshBasicMaterial({color});
+    const particleGeometry = new THREE.SphereGeometry(0.03, 16, 16);
+    const particleMesh = new THREE.Mesh(particleGeometry, particleMaterial);
+    particleMesh.position.set(particleInfo.x, particleInfo.y, particleInfo.z);
+    this.rendererService.scene.add(particleMesh);
+    this.particles.push(particleMesh);
+    this.animatePulse(particleMesh, 3, () => {
+      this.rendererService.scene.remove(particleMesh);
+      this.clearParticleVisuals();
+      this.renderFrameParticles(this.currentFrame);
+    });
+  }
+
+  private animatePulse(mesh: THREE.Mesh, cycles: number, onComplete: () => void): void {
+    const duration = 300;
+    const maxScale = 0.08 / 0.03;
+    const startTime = performance.now();
+
+    const animate = (time: number) => {
+      const elapsed = (time - startTime) % duration;
+      const t = elapsed / (duration / 2);
+      const scaleFactor = t <= 1 ? 1 + (maxScale - 1) * t : maxScale - (maxScale - 1) * (t - 1);
+      mesh.scale.setScalar(scaleFactor);
+
+      if (time - startTime >= duration * cycles) {
+        onComplete();
+      } else {
+        requestAnimationFrame(animate);
+      }
+    };
+
+    requestAnimationFrame(animate);
+  }
+
   /**
    * Sets the selected color for new particles
    */