meshy-dev/meshy-dcc-adapters/maya-bifrost

maya-bifrost (Authoring stage)

Typed wrappers around Maya's supported Bifrost/VNN commands. The skill loads mayaVnnPlugin and bifrostGraph on demand, then keeps graph changes on Maya's main thread.

Recommended flow

1. list_bifrost_graphs to inspect the scene.
2. create_bifrost_graph when a new graph container is needed.
3. add_bifrost_node with a fully-qualified type such as

Modeling::Primitive::create_mesh_cube.

1. create_bifrost_port when a dynamic port is required, such as inputs on

Core::Array::build_array or an Object port on the graph output node.

1. set_bifrost_property for unconnected input defaults.
2. connect_bifrost_ports using paths such as .cube.cube_mesh and

.output.geometry.

Use an explicit Core::Array::build_array node before ports that require array<Object>; Bifrost does not implicitly promote an Object connection to an object array.

Simulation and output

1. cache_bifrost_simulation once the graph evaluates the way you want —

scrubbing an uncached Bifrost graph is slow and farm renders need the cache.

1. convert_bifrost_to_polygons to bake the evaluated output into a real

mesh node that maya-mesh-ops, maya-uv-ops and maya-geometry can use.

Scripts

• add_bifrost_node - Add a typed Bifrost node to a graph
• cache_bifrost_simulation - Write and attach a geometry cache for a graph's output
• connect_bifrost_ports - Connect or disconnect two ports in a Bifrost graph
• convert_bifrost_to_polygons - Convert a Bifrost output into a Maya polygon mesh
• create_bifrost_graph - Create an empty Bifrost graph container
• create_bifrost_port - Create a dynamic input or output port on a node
• list_bifrost_graphs - Inspect the Bifrost graphs in the scene
• set_bifrost_property - Set an unconnected Bifrost node port's default value