Position Animation

Position animations are configured using the Position category of the Properties panel for particle sets.

Position Animation

Create a position animation to change its position after it has been emitted.

You can configure the following three settings for position animations.

Add in specified direction

Use the Add in Specified Direction setting to cause a particle to move at a set speed in the specified direction.

Feature

The specified value is added to the particle's position every frame. The particle moves without inertia at a set speed.

Parameters

Use the following two parameters to configure Add in Specified Direction.

Parameters Description
Direction: Specifies the direction in which the particle moves. Specify between -1 and 1 for the X, Y, and Z axes.
Speed Specifies the value to add every frame to the particle's position.

Conceptual Diagram

The figure below shows a constant-speed animation made by adding a speed value every frame to the particle position.
By animating the direction of movement, you can change the particle's direction. (This cannot currently be animated.)

Add in specified direction

Spin

By setting the spin, you can add rotational motion to all particles.

Feature

The specified value is added to the angle. The particle rotates at a set speed without inertia.

Parameters

Use the following two parameters to configure Spin.

Parameters Description
Axis Specifies the axis along which to rotate the particle.
Angular Velocity Specifies the angle by which the particle will rotate along the specified axis in one frame. Practical values range from -20 to 20, but you can also use values beyond this range.

Conceptual Diagram

The figure below shows the effect of adding an angular speed of 45 to the particle position, and rotating at a constant speed around the Y-axis.

Spin

Random (position)

Setting Randomness (position) allows you to make particles quiver slightly.

Feature

You can add a random value to the particle's position.

Parameters

Use the following two parameters to configure Random (position).

Parameters Description
Strength Specifies the direction and strength of the force applied to a particle.
Frame Interval Specifies the interval for adding values to the particle position, as a number.

CONFIDENTIAL