AE Particular粒子插件制作真实下雪场景教程 Creating Realistic Snow红巨星Red Giant的粒子插件Trapcode Particular制作随风飘动的真实下雪场景教程涉及知识点：Creating Snow – 雪花的模拟Manipulating Wind – 风向的控制Forcing Motion Blur – 运动模糊Adding Depth of Field – 景深的添加