CreateCollection.hpp

#pragma once
#include <halp/controls.hpp>
#include <halp/meta.hpp>
 
#include <ossia/dataflow/geometry_port.hpp>
 
#include <cstdint>
#include <memory>
#include <string>
#include <vector>
 
namespace Threedim
{
 
// Authors a named collection (a reusable set of scene paths) and
// stamps it onto the passthrough scene_spec's collections vector.
//
// Collections are addressable by name anywhere downstream — a consumer
// node that takes a collection name resolves the paths at consume-time,
// which decouples "what is the set of things I care about?" from "what
// am I doing to them?".
//
// Multiple CreateCollection nodes can chain: each contributes its own
// named collection to the scene, and downstream consumers can pick any
// of them by name. merge_scenes concatenates collections additively
// across multi-producer merges.
class CreateCollection
{
public:
  halp_meta(name, "Create Collection")
  halp_meta(category, "Visuals/3D/Scene")
  halp_meta(c_name, "create_collection")
  halp_meta(authors, "ossia team")
  halp_meta(
      manual_url,
      "https://ossia.io/score-docs/processes/create-collection.html")
  halp_meta(uuid, "6c2e9b7a-4d3f-4a1c-8f5e-2b7d9e4c3a1f")
 
  struct ins
  {
    struct
    {
      halp_meta(name, "Scene In");
      ossia::scene_spec scene;
      uint8_t dirty{0};
    } scene_in;
 
    // Port-driven rebuild: controls trigger rebuild(); upstream
    // scene_in changes detected in operator()().
    struct : halp::lineedit<"Name", "">
    { void update(CreateCollection& n) { n.rebuild(); } } name;
    struct : halp::val_port<"Paths", std::vector<std::string>>
    { void update(CreateCollection& n) { n.rebuild(); } } paths;
    struct : halp::val_port<"Tags", std::vector<std::string>>
    { void update(CreateCollection& n) { n.rebuild(); } } tags;
  } inputs;
 
  struct outs
  {
    struct
    {
      halp_meta(name, "Scene Out");
      ossia::scene_spec scene;
      uint8_t dirty{0};
    } scene_out;
  } outputs;
 
  void rebuild();
  void operator()();
 
  std::shared_ptr<const ossia::scene_state> m_cached_out;
  uint8_t m_pending_dirty{0xFF};
  const ossia::scene_state* m_cached_in_state{};
  int64_t m_cached_in_version{-1};
  int64_t m_version_counter{0};
};
 
}