粒子系统

The shape of the volume within which the particles are generated:的形状体积内生成的粒子:

	Point — particles are emitted from a single point.Point 粒子发出一个单点。
	Sphere — particles are generated at random positions within a sphere that has a specified radius.Sphere 粒子随机生成的位置在一个领域有一个指定的 半径。
	Cylinder — particles are generated at random positions within a cylinder that has a specified radius and height.Cylinder 粒子随机生成的位置在一个汽缸,指定半径 和 高度。
	Box — particles are generated at random positions within a cube that has a specified width (X axis), height (Y axis), and depth (Z axis).Box 粒子随机生成的位置在一个多维数据集有一个指定的 宽度(X轴), (Y轴),高度和深度 (Z轴)。
	Spark — this emitter generates particles in the points of collision of the parent particles. The spark particle system should be made a child node of a particle system that generates initial particles. Spark emitter can be used to simulate cascades of particles.Spark这个发射器产生粒子的碰撞点的父粒子。火花粒子系统应该是一个子节点初始粒子的粒子系统生成。火花发射器可以用来模拟级联的粒子。
	Random — particles are generated on the surface of an arbitrary parent mesh. The particle system should be made a child node of a mesh. At rendering time, random vertices of the mesh are chosen to generate particles.Random 粒子表面生成任意父网格。粒子系统应网的一个子节点。在渲染的时候,随机选择网格的顶点生成粒子。

• Billboard represent rotating square planes that are camera-oriented. For example, billboard particles can be used to create smoke.Billboard代表旋转广场camera-oriented飞机。例如,广告牌粒子可用于创建烟。
• Flat particles are perpendicular to the Z axis of their particle system. They are good for simulating some effects on plane surfaces such as water.Flat粒子与粒子系统的Z轴垂直。它们是很好的模拟等影响飞机表面的水。
• Point particles are similar to the billboard type. They also always face the camera, but have the fixed screen-aligned orientation.Point粒子类似广告牌类型。它们也总是面对镜头,但有固定screen-aligned取向。
• Length particles are billboard particles that can be stretched along the direction of their movement. Stretching is an adjustable factor. Sparks and splashes can be effectively simulated using this type of particles.Length粒子粒子上,可以沿着方向的拉伸运动。Stretching是一个可调节的因素。火花和色斑可以有效地使用这种类型的粒子模拟。
• Random particles are square particles randomly oriented in the space. Leaf-fall can be successfully imitated with this type of particles.面向Random粒子是方形粒子随机的空间。落叶可以成功地模仿这种类型的粒子。
• Route particles can be used to create tracks from moving objects (for example, trail following a ship). They are similar to the previous implementation of flat particles.Route粒子可用于创建跟踪移动物体(例如,跟踪船后)。它们是类似于前面的扁平粒子的实现。
• Chain particles are billboard particles that form a continuous, visually uninterrupted flow. Their length directly depends on the spawn rate of the emitter. This type of particles is intended to be used with Emitter Shift creating a chain-like trail after it.Chain粒子粒子上,形成一个连续的,视觉上不间断的流动。它们的长度直接取决于产卵率

The order of rendering for particle systems, especially when creating a complex effects like shots (with muzzle flash, smoke and the shot itself, each rendered with different particle systems). This parameter is very much the same as Rendering Order option in the Materials Settings. But it allows setting a rendering sequence inside of the particle system hierarchy, to avoid such situations when the smoke from a distant shot is rendered atop of the fire of the foreground shot.粒子系统的渲染顺序，尤其是在创建像射击这样的复杂效果时（带有枪口闪光、烟雾和射击本身，每个效果都使用不同的粒子系统渲染）。 此参数与材质设置中的 渲染顺序 选项非常相似。 但它允许在粒子系统层次结构内部设置渲染序列，以避免将远处镜头的烟雾渲染在前景镜头的火焰之上时出现这种情况。

• 0 means a default sorting according to bounding boxes of particle systems. 0 强意味着一个默认排序根据粒子系统的边界框。
• Particles with the lowest Sequence number are rendered first and are covered by the particles with the highest Sequence number, which are rendered last and above others.粒子与最低 序列号呈现第一和覆盖的粒子与 最高序列号,最后呈现和高于其他粒子。

Enabling this feature makes the following: a random image from the albedo texture is picked up for every particle. 启用这个特性使得如下:反照率的随机图像纹理

注意

For using this option, Animation of the texture should be disabled.使用这个选项, 动画纹理的应该是禁用的。

Flipping of random emitted particles horizontally (along the X axis).翻转随机发射粒子的水平(沿着X轴)。

Flipping of random emitted particles vertically (along the Y axis).垂直翻转的随机发射粒子(沿着Y轴)。

Threshold of the number of particles depending on the velocity of the parent particles.
This parameter is used to additionally synchronize the number of particles spawned by spark and random emitters with the parent particle system.阈值的粒子数取决于父粒子的速度。
这个参数用于由spark造就另外同步粒子数和random发射器与父粒子系统。

注意

Threshold for random emitter functions only with a particle system as a parent node.阈值random发射器的功能只有一个粒子系统作为一个父节点。

• By the value of 0, the spawn rate of the spark emitter is independent of the parent particle system.的价值 0 强,产卵率spark发射器是独立的父粒子系统。
• The higher the threshold value, the higher must be velocity of the parent particles for the sparks to be generated. If it is not high enough, there will be only few particles, if any. 阈值更高,更高的必须是父粒子的速度产生火花。如果不是足够高,只有一些粒子,如果任何。

Duration of a pause between generation cycles, in seconds.一代之间的停顿时间周期，以秒计。

• If the value is set to 0, the particles are spawned constantly, without any pauses.None — minimum and maximum sizes of particles on the screen are not limited.如果该值设置为0,粒子的不断产生,没有任何停顿。
• If infinity (inf) is specified, the particles emitter becomes inactive after one generation cycle.Width — minimum and maximum sizes of particles on the screen are limited relative to screen width.如果指定无穷(inf),一代循环后的粒子发射器变得不活跃。

This parameter also has the Spread value that creates the variety of the Period value, in seconds.这个参数也有Spread价值创造的各种周期值，以秒计。

Duration of generation cycle, within which emission occurs, in seconds.代时间周期,在发射时，以秒计。

• The higher the value, the longer are the periods when particles are generated.Height — minimum and maximum sizes of particles on the screen are limited relative to screen height. 价值越高,时间越长时期粒子生成。
• Setting the value to 0 means that particles are simultaneously spawned over an infinitely small time interval (i.e. during one frame). This value can be used when you need to simulate a one-particle gun shot, for example.0 (minimum) — the particle has a zero size and therefore is invisible on the screen (occupies no space at all).值设置为0意味着粒子同时催生了一个无限小的时间间隔(即在一帧)。例如,这个值可以使用当您需要模拟一个粒子枪射击。

This parameter also has the Spread value that creates the variety of the Duration value, in seconds.这个参数也有Spread价值，这个值创造了多种的时间价值，以秒计。

Gravity force affecting particles along the X, Y and Z axes.重力影响粒子沿着X , Y Z 和 轴。

• Positive values equal gravity vector directed upwards.积极值等于重力向量直接向上。
• Negative values equal gravity vector directed downwards.负值等于重力向量直接向下。

Most parameters in this section have multiple options for setting a value:粒子系统节点的旋转不影响重力向量。

Angle of particles orientation in space, in degrees.
If the angle value is set to 180 degrees, the particles will be randomly oriented in all directions.在空间粒子取向角,度。
如果角值设置为180度,粒子将面向随机的四面八方。

注意

This option is not available for particles of point and length types.该选项不可用point和length类型的粒子。

Angular velocity of particles, in degrees per second.粒子的角速度度每秒。

• Positive numbers rotate the particles clockwise.积极数字粒子顺时针旋转。
• Negative numbers rotate the particles counterclockwise.负数字粒子逆时针旋转。

Increment of the size of a particle, in units per second.增量的大小的粒子,在单位每秒。

• Positive numbers result in particles increasingly growing after they are spawned. For example, fireworks grow and blossom in the sky.正数导致粒子在生成后不断增长。例如，烟花在天空中生长和绽放。
• Negative number define the particles gradually lessening. For example, to imitate the smoke dissipating in air.负数表示粒子逐渐减少。例如，模仿烟雾在空气中消散。

Screen size mode to be used for particles. This mode defines whether the maximum and minimum sizes of emitted particles should be limited relative to screen size or not (e.g., to avoid cases when snowflakes or raindrops obscure the view if they are too close to the camera or when they become invisible as the distance to the camera increases). Three modes are available:用于粒子的屏幕尺寸模式。 此模式定义发射粒子的最大和最小尺寸是否应相对于屏幕尺寸进行限制（例如，为了避免 如果雪花或雨滴离相机太近，或者随着与相机的距离增加而变得不可见，就会遮挡视图）。 三种模式可供选择：

• If the value is set to 0, the particles are spawned constantly, without any pauses.None — minimum and maximum sizes of particles on the screen are not limited.None 最小和最大尺寸的粒子在屏幕上没有限制。
• If infinity (inf) is specified, the particles emitter becomes inactive after one generation cycle.Width — minimum and maximum sizes of particles on the screen are limited relative to screen width.Width 屏幕上的最小和最大尺寸的粒子相对于屏幕宽度是有限的。
• The higher the value, the longer are the periods when particles are generated.Height — minimum and maximum sizes of particles on the screen are limited relative to screen height.Height 屏幕上的最小和最大尺寸的粒子相对于屏幕高度是有限的。

Minimum screen size to be set for particles limiting the minimum fraction of the screen a single particle can occupy:最低屏幕上粒子的大小，为限制单个粒子可以占领最低的部分:

• Setting the value to 0 means that particles are simultaneously spawned over an infinitely small time interval (i.e. during one frame). This value can be used when you need to simulate a one-particle gun shot, for example.0 (minimum) — the particle has a zero size and therefore is invisible on the screen (occupies no space at all).0(最低),粒子大小为零,因此是无形的在屏幕上(占任何空间)。
• 1 (maximum) — the particle occupies the whole screen.1(最大)，粒子占据整个屏幕。

Maximum screen size to be set for particles limiting the maximum fraction of the screen a single particle can occupy:最大屏幕上粒子的大小，为限制单个粒子可以占领最大的部分:

• 0 (minimum) — the particle has a zero size and therefore is invisible on the screen (occupies no space at all).0(最低),粒子大小为零,因此是无形的在屏幕上(占任何空间)。
• 1 (maximum) — the particle occupies the whole screen.1(最大)-粒子占据整个屏幕。

Stretching of a particle billboard, available for the Length Particles. With the value of 0, the length particle is simply a square billboard. Increasing the value stretches particles in the direction of their movement. The result is calculated by multiplying the stretch value by the particle velocity value. So, the higher the velocity is, the more stretched the particles are in the direction of their movement, while the other side remains of the same width.粒子广告牌的拉伸，可用于Length Particles。 当值为0时，长度粒子只是一个方形的广告牌。 增加该值会沿粒子的运动方向拉伸粒子。 结果是通过将拉伸值乘以粒子速度值来计算的。 因此，速度越高，粒子在其运动方向上拉伸得越多，而另一侧保持相同的宽度。

Sparks Length Stretch = 0	Sparks Length Stretch = 0.3