时间步长
void FluidSimulation::_stepFluid(double dt) { if (!_isSkippedFrame) { //生成更新障碍对象线程 //04-Sep-2020 14h58m32s BEGIN Update Obstacle Objects //04-Sep-2020 14h58m33s COMPLETE Update Obstacle Objects _launchUpdateObstacleObjectsThread(dt); //加载更新障碍对象线程 _joinUpdateObstacleObjectsThread(); //启动更新液位设置线程 //04-Sep-2020 14h58m33s BEGIN Update Liquid Level Set //04-Sep-2020 14h58m33s COMPLETE Update Liquid Level Set _launchUpdateLiquidLevelSetThread(); _joinUpdateLiquidLevelSetThread(); //启动平流速度场线程，_advectVelocityFieldThread = std::thread(&FluidSimulation::_advectVelocityField, this); //04-Sep-2020 14h58m33s BEGIN Advect Velocity Field //04-Sep-2020 14h58m33s COMPLETE Advect Velocity Field _launchAdvectVelocityFieldThread(); _joinAdvectVelocityFieldThread(); //启动计算流体曲率网格线程 // _launchCalculateFluidCurvatureGridThread(); //保存速度场 //04-Sep-2020 14h58m33s BEGIN Save Velocity Field //04-Sep-2020 14h58m33s COMPLETE Save Velocity Field _saveVelocityField(); //对速度场施加物体力 //04-Sep-2020 14h58m33s BEGIN Apply Force Fields //04-Sep-2020 14h58m33s COMPLETE Apply Force Fields _applyBodyForcesToVelocityField(dt); //粘度解算器 //将粘度应用于速度场 // _applyViscosityToVelocityField(dt); if (_isSurfaceTensionEnabled) { _joinCalculateFluidCurvatureGridThread(); } //压力解算器 //04-Sep-2020 14h58m47s BEGIN Solve Pressure System //04-Sep-2020 14h58m47s COMPLETE Solve Pressure System _pressureSolve(dt); //限制速度场 //04-Sep-2020 14h58m33s BEGIN Constrain Velocity Field //04-Sep-2020 14h58m33s COMPLETE Constrain Velocity Field _constrainVelocityFields(); if (_isDiffuseMaterialOutputEnabled) { _joinCalculateFluidCurvatureGridThread(); } _updateDiffuseMaterial(dt); if (_isSheetSeedingEnabled) { _joinCalculateFluidCurvatureGridThread(); } _updateSheetSeeding(); //更新粒子速度 //04-Sep-2020 14h58m33s BEGIN Update Marker Particle Velocities //04-Sep-2020 14h58m33s COMPLETE Update Marker Particle Velocities _updateMarkerParticleVelocities(); //删除保存的速度场 //04-Sep-2020 14h58m33s BEGIN Delete Saved Velocity Field //04-Sep-2020 14h58m33s COMPLETE Delete Saved Velocity Field _deleteSavedVelocityField(); //提前标记粒子 //04-Sep-2020 14h58m33s BEGIN Advect Marker Particles //04-Sep-2020 14h58m33s COMPLETE Advect Marker Particles _advanceMarkerParticles(dt); //更新流体对象 //04-Sep-2020 14h58m33s BEGIN Update Fluid Objects //04-Sep-2020 14h58m34s COMPLETE Update Fluid Objects _updateFluidObjects(); //输出仿真数据 //04-Sep-2020 14h58m34s BEGIN Generate Output Data //04-Sep-2020 14h58m34s COMPLETE Generate Output Data _outputSimulationData(); //04-Sep-2020 14h58m34s BEGIN Generate Surface Mesh //04-Sep-2020 14h58m34s COMPLETE Generate Surface Mesh } }