3.9 Boids【鳥群算法】

Boids will ignore particles that aren't "Awake".

【鳥群會忽視沒有喚醒的粒子】

Avoid distance field Surfaces_GPU pushes boids away from both the nearest surfaces and surfaces directly in front of the particles.

【避免距離場表面GPU把鳥群從最近表面和前方表面推開】

Gravity constrains the particles to the area that is most interesting.

【重力限制粒子到有吸引力的地方】

We're holding off on running the final solve until the boid forces can be calculated in a final simulation stage. For that reason, we're writing Transient.PhysicsForce to a particle parameter so it can be later referenced in a simulation stack.

【我們把力的結(jié)算推遲到最后的模擬階段。因此，我們將臨時物理力寫進(jìn)粒子參數(shù)，使它能在模擬堆疊中被引用】

"Boid Force" pulls particles near a common center (Cohesion Force) and pushes them away from each other when they're too close (Avoidance Force) and "Velocity Matching" allows them to follow each others lead.

【鳥群力把粒子推向附近的一個共同中心（內(nèi)聚力），并當(dāng)它們相互靠得太近時推離開它們（避免力），和速度匹配允許它們相互領(lǐng)頭飛行】

Boids appear unnatural if they turn too quickly. Setting a min speed, a max speed and an acceleration limit can help us ensure that they look plausible.

【群鳥如果調(diào)頭太快會顯得不真實(shí)。設(shè)置一個最低速度，一個最高速度，和一個加速度限制，能幫助我們確保它們看起來更真實(shí)】

Flight orientation gracefully rotates the mesh and banks the models as it rotates through space.

【飛行朝向優(yōu)雅地旋轉(zhuǎn)網(wǎng)格體和當(dāng)它在空間旋轉(zhuǎn)時傾斜模型】

We write out debug variables here.

【我們在這寫出調(diào)試參數(shù)】

A number of renderers here are used to debug various vectors.

Feel free to enable them to see some of the data that we compute internally.

【這里的許多渲染器是用來調(diào)試各種向量的】

【隨意開啟它們來查看我們計(jì)算的某些數(shù)據(jù)】

Avoid Distance Field Surface GPU【躲避距離場表面GPU】模組

Active【激活】

Nearest Surface Avoidance Strength【最近表面躲避強(qiáng)度】：推離最近表面的力的強(qiáng)度

Falloff Distance【衰減距離】：到有影響力的距離場表面的最大距離，即開始施加推離力的距離

Obstacle Avoidance Strength【障礙物躲避強(qiáng)度】：推離障礙物的力的強(qiáng)度

Max Trace Distance【最大追蹤距離】：障礙物小于此距離時生成推離力

Trace Vector【追蹤向量】：檢測障礙物的方向