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The Corona Pattern Modifier (CoronaPatternMod) can be used to cover a base object with a 3D pattern generated by repeating another object over the base object's surface.

Corona Pattern

Mod

Pattern node

None – Selects a geometry node that will be is repeated as a pattern on the base object.

Crop box size X – Croppping Size of the crop box size in the X axis.

Crop box size Y – Croppping Size of the crop box size in the Y axis.

Crop box size Z – Croppping – Size of the crop box size in the Z axis. 

Fit in object space – Fits the crop box closely around the pattern node in the pattern node object space (the axes of the crop box are equal to the axes of the pattern local space).

Fit in world space – Fits the crop box closely around the pattern node in the world space - taking into account the pattern node transformation to the world space (the axes of the crop box are equal to the axes of world space)

Fit in custom object space – Selects an object that defines the size and transformation of the crop box for the pattern. 

On/Off map – When on, Corona applies the selected map to enable/disable the pattern node. Otherwise, the pattern node is applied without any modifications. 

No Map – Applies the on/off map to the pattern using UVW mapping of the base object. If the map value is greater or equal to 0.5, the pattern is displayed. For other values, the base geometry is displayed. 

Automatic pattern height – If enabled, the pattern height is automatically computed in a way that tries to preserve original pattern proportions. 

Pattern height – Changes the height of the pattern along the base object normals. The default value of 1 corresponds to the unmodified height of the crop box.

Pattern offset – Offsets the pattern along the base object normals. The default value of 1 corresponds to having the pattern fully above the base object, while the value of -1 corresponds to the pattern being fully below the base object.

Render Settings

ID mode – Selects what type of IDs (e.g. primitive ID, polygon ID, material ID, etc.) are output by the pattern geometry.

Pattern Object – IDs are taken from the pattern object.
Base Object –IDs are taken from the base object.

JVW UV mode – Selects what type of texture mapping coordinates (UVWs) are output by the pattern geometry.

Pattern Object object – UVWs are taken from the pattern object.
Base Objectobject – UVWs are taken from the base object.
Alternate both – UVW Texture mapping is taken from the base object (B) or from the pattern (P) depending on the texture channel. They can be combined in a single material and applied to the pattern node. 
Channel 2, 3 - P mapping 1, B mapping 1
Channel 4, 5 - P mapping 2, B mapping 2
Channel 6, 7 - P mapping 3, B mapping 3, etc.

Render base object – If switched on, the base object mesh is rendered along with the repeated pattern geometry.

Use pattern material – If switched on, the material used on the repeated pattern is taken from the pattern node. Otherwise, the material is taken from the base node.

Restrict on material ID – If switched on, the repeated pattern is only shown at triangles of the base object that have the selected material ID. The triangles of the base object with different material IDs will be displayed without the pattern (unmodified).

Material ID – Selects the material ID.

Auto-generate caps – When on, Corona tries to automatically generate caps where the crop box intersects with the pattern geometry. For this to work correctly, the pattern geometry must be closed and needs to have valid normals pointing outwards from the pattern object. 

Real-World Map Size – When on, the automatically generated caps have real-world scale UVW

Tiling

Tiling controls the number of pattern tiles on the base object. It works exactly the same as tiling in the case of 2D textures.