Mesh Groups

Reference

Panel:

Properties ‣ Mesh Properties ‣ HEIO Mesh Properties ‣ Groups

Groups are used to divide a mesh into several units. HEIO does this by assign each polygon which group to use, like a material.

Each group is only identified by a group name.

In models

In .model and .terrain-model files, they are often used hide specific parts of a model when not needed.

In collision meshes

In .btmesh files, they are used to divide parts of a collision mesh into “shapes”. The group name does not get exported here.

Mesh groups have several properties specific to collision meshes

Collision Layer

Determines how entities interact with the collision shape

Is Convex Collision

Whether the shape is convex (has no “indents” or holes). This strips the shape of all polygons information on export, but takes less CPU power to collide with.

Without polygons, convex shapes can only have one set of polygon specific info:

Convex collision type

The collision type to use on the entire convex shape.

See Collision Types for more info.

Convex collision flags

A list of collision flags to use on the entire convex shape.

See Collision Flags for more info.