Adding ViroKit. Needs AWSCore :(

mobile/ios/ViroKit.framework/Headers/VROARConstraintMatcher.h

@@ -0,0 +1,124 @@
+//
+//  VROARConstraintMatcher.h
+//  ViroKit
+//
+//  Created by Andy Chu on 6/16/17.
+//  Copyright © 2017 Viro Media. All rights reserved.
+//
+
+#ifndef VROARConstraintMatcher_h
+#define VROARConstraintMatcher_h
+
+#include "VROARSession.h"
+#include <map>
+#include <vector>
+
+class VROARAnchor;
+class VROARDeclarativeNode;
+class VROARConstraintMatcherDelegate;
+
+/*
+ VROARConstraintMatcher handles matching declarative nodes with anchors that
+ meet their requirements.
+ */
+class VROARConstraintMatcher {
+public:
+    VROARConstraintMatcher() {};
+    virtual ~VROARConstraintMatcher() {};
+
+    void addARNode(std::shared_ptr<VROARDeclarativeNode> node);
+    void removeARNode(std::shared_ptr<VROARDeclarativeNode> node);
+    void updateARNode(std::shared_ptr<VROARDeclarativeNode> node);
+
+    void setDelegate(std::shared_ptr<VROARConstraintMatcherDelegate> delegate);
+
+    /*
+     This function will silently detach all the anchors from the given nodes. This
+     is currently used when ARScene is being detached.
+     */
+    void detachAllNodes(std::vector<std::shared_ptr<VROARDeclarativeNode>> nodes);
+    
+    void anchorWasDetected(std::shared_ptr<VROARAnchor> anchor);
+    void anchorDidUpdate(std::shared_ptr<VROARAnchor> anchor);
+    void anchorWasRemoved(std::shared_ptr<VROARAnchor> anchor);
+    
+private:
+    
+    // Map between a string ID and the VROARAnchor with that ID.
+    std::map<std::string, std::shared_ptr<VROARAnchor>> _nativeAnchorMap;
+    std::shared_ptr<VROARAnchor> getAnchorFromId(std::string id);
+
+    std::weak_ptr<VROARConstraintMatcherDelegate> _delegate;
+
+    // Anchors without an associated Node
+    std::vector<std::shared_ptr<VROARAnchor>> _detachedAnchors;
+
+    // Nodes w/o id's without an associated Anchor
+    std::vector<std::shared_ptr<VROARDeclarativeNode>> _detachedNodes;
+
+    // Nodes w/ id's without an associated Anchor
+    std::vector<std::shared_ptr<VROARDeclarativeNode>> _detachedNodesWithID;
+
+    /*
+     Returns a detached anchor that is suitable for the given node.
+     */
+    std::shared_ptr<VROARAnchor> findDetachedAnchor(std::shared_ptr<VROARDeclarativeNode> node);
+    
+    /*
+     Returns a detached node satisfied by the given anchor.
+     */
+    std::shared_ptr<VROARDeclarativeNode> findDetachedNode(std::shared_ptr<VROARAnchor> anchor);
+    
+    /*
+     This function either attaches the detached node to an anchor or adds the node to
+     _detachedNodes.
+     */
+    void processDetachedNode(std::shared_ptr<VROARDeclarativeNode> node);
+    
+    /*
+     This function either attaches the detached anchor to an node or adds the anchor to
+     _detachedAnchors.
+     */
+    void processDetachedAnchor(std::shared_ptr<VROARAnchor> anchor);
+
+    /*
+     This function handles the logic and updating required for attaching a node to an anchor
+     */
+    void attachNodeToAnchor(std::shared_ptr<VROARDeclarativeNode> node, std::shared_ptr<VROARAnchor> anchor);
+
+    /*
+     This function handles detaching a node from an anchor
+     */
+    void detachNodeFromAnchor(std::shared_ptr<VROARAnchor> anchor);
+
+    /*
+     Functions to abstract out the notification of the delegate
+     */
+    void notifyAnchorWasAttached(std::shared_ptr<VROARAnchor> anchor);
+    void notifyAnchorWasDetached(std::shared_ptr<VROARAnchor> anchor);
+
+    /*
+     Helper functions to remove the given objects from the _detached* vectors
+     */
+    void removeFromDetachedList(std::shared_ptr<VROARDeclarativeNode> node);
+    void removeFromDetachedList(std::shared_ptr<VROARAnchor> anchor);
+};
+
+class VROARConstraintMatcherDelegate {
+public:
+
+    /*
+     Invoked when an anchor is attached to node.
+     */
+    virtual void anchorWasAttached(std::shared_ptr<VROARAnchor> anchor) = 0;
+    
+    /*
+     Invoked when an anchor is detached from a node.
+     */
+    virtual void anchorWasDetached(std::shared_ptr<VROARAnchor> anchor) = 0;
+    
+};
+
+#endif /* VROARConstraintMatcher_h */
+
+