Register a [`RenderLayer`] with the API.
(
name: S,
render_layer: T,
default_state: RenderLayerDefaultState,
)
| 62 | |
| 63 | /// Register a [`RenderLayer`] with the API. |
| 64 | pub fn register_render_layer<S: BnStrCompatible, T: RenderLayer>( |
| 65 | name: S, |
| 66 | render_layer: T, |
| 67 | default_state: RenderLayerDefaultState, |
| 68 | ) -> (&'static mut T, CoreRenderLayer) { |
| 69 | let render_layer = Box::leak(Box::new(render_layer)); |
| 70 | let mut callback = BNRenderLayerCallbacks { |
| 71 | context: render_layer as *mut _ as *mut c_void, |
| 72 | applyToFlowGraph: Some(cb_apply_to_flow_graph::<T>), |
| 73 | applyToLinearViewObject: Some(cb_apply_to_linear_view_object::<T>), |
| 74 | freeLines: Some(cb_free_lines), |
| 75 | }; |
| 76 | let result = unsafe { |
| 77 | BNRegisterRenderLayer( |
| 78 | name.into_bytes_with_nul().as_ref().as_ptr() as *const _, |
| 79 | &mut callback, |
| 80 | default_state.into(), |
| 81 | ) |
| 82 | }; |
| 83 | let core = CoreRenderLayer::from_raw(NonNull::new(result).unwrap()); |
| 84 | (render_layer, core) |
| 85 | } |
| 86 | |
| 87 | pub trait RenderLayer: Sized { |
| 88 | /// Apply this Render Layer to a Flow Graph. |