的

js/globe.js

@@ -58,11 +58,12 @@
       return 1 - Math.pow(1 - t, 3);
     }
 
-    // 准备粒子数据：startPositions / targetPositions / current positions
+    // 准备粒子数据：startPositions / targetPositions / current positions / size
     var geometry = new THREE.BufferGeometry();
     var positions = new Float32Array(PARTICLE_COUNT * 3);
     var startPositions = new Float32Array(PARTICLE_COUNT * 3);
     var targetPositions = new Float32Array(PARTICLE_COUNT * 3);
+    var sizes = new Float32Array(PARTICLE_COUNT);
 
     // 随机在球壳表面生成点（均匀分布），作为目标位置
     function randomPointOnSphere(radius) {
@@ -108,19 +109,56 @@
       positions[i3] = start.x;
       positions[i3 + 1] = start.y;
       positions[i3 + 2] = start.z;
+
+      // 粒子尺寸：每个粒子随机一个基础大小，后续在顶点着色器中再做距离衰减
+      // 你可以调节下方这两个数，控制整体粒子大小的分布范围
+      sizes[i] = 0.8 + Math.random() * 2.2; // 0.8 ~ 3.0 之间
     }
 
     geometry.setAttribute(
       "position",
       new THREE.BufferAttribute(positions, 3)
     );
+    geometry.setAttribute(
+      "size",
+      new THREE.BufferAttribute(sizes, 1)
+    );
 
-    var material = new THREE.PointsMaterial({
-      color: 0x38bdf8,           // 粒子主色（可自行调整）
-      size: 0.08,                // 每个粒子在世界中的尺寸
-      sizeAttenuation: true,
+    // 使用自定义着色器，让粒子可以拥有不同大小
+    var material = new THREE.ShaderMaterial({
+      uniforms: {
+        uColor: { value: new THREE.Color(0x38bdf8) }, // 粒子主色
+        uOpacity: { value: 0.95 },
+        uSize: { value: 18.0 },                       // 全局尺寸基准，越大粒子越大
+        uPixelRatio: { value: Math.min(window.devicePixelRatio || 1, 2) },
+      },
+      vertexShader: `
+        attribute float size;
+        uniform float uSize;
+        uniform float uPixelRatio;
+        void main() {
+          vec4 mvPosition = modelViewMatrix * vec4(position, 1.0);
+          gl_Position = projectionMatrix * mvPosition;
+          // 简单的距离衰减，让远处粒子稍微小一些
+          float dist = length(mvPosition.xyz);
+          float att = 1.0 / (0.1 + dist * 0.35);
+          gl_PointSize = size * uSize * uPixelRatio * att;
+        }
+      `,
+      fragmentShader: `
+        uniform vec3 uColor;
+        uniform float uOpacity;
+        void main() {
+          // 将点渲染成柔和的圆形（不使用默认的方形 point sprite）
+          vec2 c = gl_PointCoord - vec2(0.5);
+          float d = length(c);
+          if (d > 0.5) discard;
+          float alpha = (1.0 - d * 2.0) * uOpacity;
+          if (alpha <= 0.0) discard;
+          gl_FragColor = vec4(uColor, alpha);
+        }
+      `,
       transparent: true,
-      opacity: 0.95,
       depthWrite: false,
       blending: THREE.AdditiveBlending,
     });
@@ -133,7 +171,7 @@
     var innerSphereMat = new THREE.MeshBasicMaterial({
       color: 0x0f172a,
       transparent: true,
-      opacity: 0.25,
+      opacity: 0.0, // 表面颜色完全透明，只保留粒子视觉
       side: THREE.BackSide,
     });
     var innerSphereMesh = new THREE.Mesh(innerSphereGeom, innerSphereMat);
@@ -161,6 +199,10 @@
       camera.aspect = w / h;
       camera.updateProjectionMatrix();
       renderer.setSize(w, h);
+      // 同步像素比，避免在缩放/视网膜屏下粒子尺寸异常
+      if (material && material.uniforms && material.uniforms.uPixelRatio) {
+        material.uniforms.uPixelRatio.value = Math.min(window.devicePixelRatio || 1, 2);
+      }
     }
     window.addEventListener("resize", onResize);