2 lines
60 KiB
JavaScript
2 lines
60 KiB
JavaScript
import{_ as x,c as a,b as m,d as l,o as j}from"./app-BdNP3b8G.js";const c="/images/2014/08/sph_1.gif",t="/images/2014/08/sph_2.jpg",e="/images/2014/08/sph_3.jpg",n="/images/2014/08/sph_4.jpg",i="/images/2014/08/sph_8.gif",u="/images/2014/08/sph_10.gif",r={};function o(d,s){return j(),a("div",null,s[0]||(s[0]=[m("h1",{id:"sph算法简介-一-数学基础",tabindex:"-1"},[m("a",{class:"header-anchor",href:"#sph算法简介-一-数学基础"},[m("span",null,"SPH算法简介（一）: 数学基础")])],-1),m("p",null,[l("SPH("),m("a",{href:"http://en.wikipedia.org/wiki/Smoothed_Particle_Hydrodynamics",target:"_blank",rel:"noopener noreferrer"},"Smoothed Particle Hydrodynamics"),l(")算法是一种流体模拟算法，他的特点是简单快速，可以用在例如游戏这样的实时的交互软件中。SPH算法虽然简单，但要完全搞明白其中的原理和实现方法，也不是易事，写这个系列希望能全面介绍一下相关的内容，如果你搜索到这里，可以仔细看一下这个系列，希望能帮到你。"),m("br"),l(" 烟雾、海浪、水滴…，这些司空见怪的自然现象其实有着非常复杂的数学规律，对于流体的研究，有两种完全不同的视角，分别是欧拉视角和拉格朗日视角。欧拉视角的坐标系是固定的，如同站在河边观察河水的流动一样，用这种视角分析流体需要建立网格单元，还会涉及到有限元等复杂的工程方法，一般用在离线的应用中。而拉格朗日视角则将流体视为流动的单元，例如将一片羽毛放入风中，那么羽毛的轨迹可以帮我们指示空气的流动规律。")],-1),m("figure",null,[m("img",{src:c,alt:"",tabindex:"0",loading:"lazy"}),m("figcaption",null,"欧拉视角 和 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