C++ BaseObject::SetParameter方法代码示例

  Bool ExecuteAutoConnect()
  {
    ConnectOptions options;
    Bool addDynamicsTag = false, inheritDynamicsTag = true;
    GetInt32(CMB_FORCE, options.forcePluginId);
    GetInt32(CMB_TYPE, options.forceType);
    GetInt32(CMB_MODE, options.connectMode);
    GetInt32(EDT_MAXCONN, options.maxConnections);
    GetFloat(EDT_RADIUS, options.radius);
    GetBool(CHK_CLOSED, options.closedChain);
    GetBool(CHK_ADDDYNAMICS, addDynamicsTag);
    GetBool(CHK_COMPOUND, inheritDynamicsTag);

    // Create an InExcludeData for the selection object.
    GeData ge_selection(CUSTOMGUI_INEXCLUDE_LIST, DEFAULTVALUE);
    auto selectionList = static_cast<InExcludeData*>(
      ge_selection.GetCustomDataType(CUSTOMGUI_INEXCLUDE_LIST));
    if (!selectionList)
      return false;

    // Get the active document and object.
    BaseDocument* doc = GetActiveDocument();
    if (!doc)
      return false;
    BaseObject* op = doc->GetActiveObject();
    if (!op)
      return false;

    // Create the root object that will contain the connectors.
    AutoFree<BaseObject> root(BaseObject::Alloc(Onull));
    if (!root)
      return false;

    // Function to create a dynamics tag.
    auto fAddDynamicsTag = [doc] (BaseObject* op, Int32 mode)
    {
      // Create a dynamics tag for the root object if it
      // does not already exist.
      BaseTag* dyn = op->GetTag(ID_RIGIDBODY);
      if (!dyn)
      {
        dyn = op->MakeTag(ID_RIGIDBODY);
        if (dyn) doc->AddUndo(UNDOTYPE_NEW, dyn);
      }

      // Update the parameters.
      if (dyn)
      {
        dyn->SetParameter(RIGID_BODY_HIERARCHY, mode, DESCFLAGS_SET_0);
        doc->AddUndo(UNDOTYPE_CHANGE_SMALL, dyn);
      }
    };

    // This list will contain all objects that should be connected.
    // While collecting, create the dynamics tags.
    maxon::BaseArray<BaseObject*> objects;
    doc->StartUndo();
    for (BaseObject* child=op->GetDown(); child; child=child->GetNext())
    {
      objects.Append(child);
      if (addDynamicsTag && inheritDynamicsTag)
        fAddDynamicsTag(child, RIGID_BODY_HIERARCHY_COMPOUND);
    }
    if (addDynamicsTag && !inheritDynamicsTag)
      fAddDynamicsTag(op, RIGID_BODY_HIERARCHY_INHERIT);

    // If no objects where collected, quit already.
    if (objects.GetCount() <= 0)
    {
      doc->EndUndo();
      doc->DoUndo(false);
      return true;
    }

    // Create the connection objects.
    ConnectObjects(op->GetName() + ": ", objects, options);

    // Fill the selection list and insert the objects.
    for (auto it=options.output.Begin(); it != options.output.End(); ++it)
    {
      (*it)->InsertUnderLast(root);
      doc->AddUndo(UNDOTYPE_NEW, *it);
      selectionList->InsertObject(*it, 0);
    }

    root->SetName(op->GetName() + ": " + root->GetName() + " (" + options.forceName + ")");
    doc->InsertObject(root, nullptr, nullptr);
    doc->AddUndo(UNDOTYPE_NEW, root);

    // Create the selection object.
    if (selectionList->GetObjectCount() > 0)
    {
      BaseObject* selection = BaseObject::Alloc(Oselection);
      if (selection)
      {
        selection->SetParameter(SELECTIONOBJECT_LIST, ge_selection, DESCFLAGS_SET_0);
        selection->SetName(op->GetName() + ": " + options.forceName + " (" + selection->GetName() + ")");
        doc->InsertObject(selection, nullptr, nullptr);
        doc->AddUndo(UNDOTYPE_NEW, selection);
      }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        for (auto jt=objects.Begin(); jt != end; ++jt)
        {
          if (*it == *jt) continue;
          if (list.HasConnection(*it, *jt)) continue;

          Connection conn(*it, *jt);
          if (!nearest || conn.delta < delta)
          {
            nearest = *jt;
            delta = conn.delta;
          }
        }

        if (nearest)
          list.Append(Connection(*it, nearest));
      }
      break;
    }
    case CMB_MODE_CHAIN:
    {
      options.radius = 0;
      options.maxConnections = 0;
      const auto first = objects.Begin();
      for (auto it=objects.Begin(); it != objects.End(); ++it)
      {
        Bool isLast = (it + 1) == objects.End();
        if (isLast && (options.closedChain && *it != *first))
        {
          Connection conn(*it, *first);
          list.Append(conn);
        }
        else if (!isLast)
        {
          Connection conn(*it, *(it + 1));
          list.Append(conn);
        }
      }
      break;
    }
    default:
      GeDebugOut(String(__FUNCTION__) + ": Invalid connectMode");
      return false;
  }

  // Sort the list by distance.
  list.SortByDelta();

  // This map contains the number of connections each
  // object already has to make sure no object exceeds the
  // maximum number if connections.
  maxon::Bool created = false;
  maxon::HashMap<C4DAtom*, Int32> map;

  // Iterate over all connections and establish them.
  const auto end = list.End();
  for (auto it=list.Begin(); it != end; ++it)
  {
    if (options.radius > 0.000001 && it->delta > options.radius)
      continue;

    // Find and eventually initialize the entries in the map.
    auto entry1 = map.FindOrCreateEntry(it->obj1, created);
    if (created) entry1->GetValue() = 0;
    auto entry2 = map.FindOrCreateEntry(it->obj2, created);
    if (created) entry2->GetValue() = 0;

    // Determine if the maximum number of connections is reached.
    const Int32 nConn1 = entry1->GetValue();
    const Int32 nConn2 = entry2->GetValue();
    if (options.maxConnections > 0 &&
        (nConn1 >= options.maxConnections || nConn2 >= options.maxConnections))
      continue;

    // Create the force object.
    BaseObject* force = BaseObject::Alloc(options.forcePluginId);
    if (!force)
    {
      success = false;
      break;
    }

    // Update the parameters.
    force->SetParameter(FORCE_TYPE, options.forceType, DESCFLAGS_SET_0);
    force->SetParameter(FORCE_OBJECT_A, it->obj1, DESCFLAGS_SET_0);
    force->SetParameter(FORCE_OBJECT_B, it->obj2, DESCFLAGS_SET_0);
    force->SetBit(BIT_ACTIVE);
    force->SetName(prefix + it->obj1->GetName() + " - " + it->obj2->GetName());
    ++entry1->GetValue();
    ++entry2->GetValue();

    options.output.Append(force);

    // Position the force object in between the two objects.
    Matrix mg;
    mg.off = (it->obj1->GetMg().off + it->obj2->GetMg().off) * 0.5;
    force->SetMl(mg);
  }

  return true;
}