Self Collision

Self Collision and Mutual Collision

Set self-collisions and mutual collisions.
Self-collision is the ability for cloth to collide with itself.
By using this function, even if the cloth itself overlaps, it will not penetrate.
Mutual Collision is the ability for a cloth to collide with another cloth.
By using this function, it is possible to make separately set cloths collide with each other.

See Self Collision for configuration details.

Self Mode

Sets the mode of self-collision.
Do not self-collide.

[Full Mesh]
Perform Point-Triangle and Edge-Edge collision judgment for own cloth.

Sync Mode

Sets the mode of mutual collision.
Do not perform mutual collisions.

[Full Mesh]
Perform Point-Triangle and Edge-Edge collision judgment for the opponent’s cloth.

Sync Partner Set the mutual collision opponent.
Only one can be set.
Surface Thickness

Self-collision and self-collision thickness.
Collision detection is performed only with this thickness.
The radius of the vertex sphere has no effect.

Also note that the thickness is the thickness of both primitives added together.

Cloth Mass

Weight of the cloth itself.
The higher the value, the heavier.

In mutual collisions, this weight ratio determines which cloth moves more.
This avoids the problem of small accessories pushing down large skirts.

Precautions for use


The self-collision feature is currently in beta.
So it is quite possible that the functionality will change in the future.


Self-collision is a very expensive process.
Therefore, it is recommended to use it on a desktop PC or a high-end console machine.
This cost is exactly proportional to the number of vertices in the proxy mesh.
Therefore, if you use it on a mobile device, please reduce the number of vertices of the proxy mesh as much as possible.


Current self-collision is not very accurate.
Therefore, if you move at high speed, the cloth may get tangled.
However, there is also a built-in mechanism to detect and untangle the entanglement inside.


Currently, it has been confirmed that self-collision is prone to vibration.
This is largely due to the structure of the proxy mesh.
Therefore, it may be difficult to use depending on the shape of the mesh.