A 3D geometric curve - the underlying mathematical curve, as opposed to the topological edge
that carries it.
A handle to a shape living inside the OpenCascade kernel, not the geometry itself. The kernel
runs as WebAssembly with its own memory, so what crosses back into JavaScript is this small
reference; pass it to the next operation to keep building. It cannot be inspected or edited
directly - use the shapes and query APIs for that - and it stays valid until the kernel's cache
is cleared.
A 3D geometric curve - the underlying mathematical curve, as opposed to the topological edge that carries it.
A handle to a shape living inside the OpenCascade kernel, not the geometry itself. The kernel runs as WebAssembly with its own memory, so what crosses back into JavaScript is this small reference; pass it to the next operation to keep building. It cannot be inspected or edited directly - use the shapes and query APIs for that - and it stays valid until the kernel's cache is cleared.