The velocity of the particle, measured in units per second.
此速度用于基于物理的特效。使用此类型速度的功能的示例:力模块、重力和初始速度。系统在各个帧间存储此速度,并且在每个模拟步骤中将其重新应用于粒子位置。
如果渲染模式 设置为 ParticleSystemRenderMode.Stretch,则 ParticleSystemRenderer
也会使用该速度。
另请参阅:ParticleSystem.Particle.animatedVelocity、ParticleSystem.Particle.totalVelocity。
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