/Users/sjg/iPhone/WhirlyGlobe/WhirlyGlobeSrc/WhirlyGlobeLib/include/SelectionLayer.h

/*
 *  SelectionLayer.h
 *  WhirlyGlobeLib
 *
 *  Created by Steve Gifford on 10/26/11.
 *  Copyright 2011 mousebird consulting. All rights reserved.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

#import <math.h>
#import <set>
#import <map>
#import "Identifiable.h"
#import "Drawable.h"
#import "DataLayer.h"
#import "LayerThread.h"
#import "SceneRendererES1.h"

namespace WhirlyGlobe
{

class RectSelectable
{
public:
    
    // Comparison operator for sorting
    bool operator < (const RectSelectable &that) const;
    
    // Used to identify this selectable
    SimpleIdentity selectID;
    Point3f pts[4];  // Geometry
    Vector3f norm;   // Calculate normal
    float minVis,maxVis;  // Range over which this is visible
};

typedef std::set<WhirlyGlobe::RectSelectable> RectSelectableSet;
 
}

@interface WGSelectionLayer : NSObject<WhirlyGlobeLayer>
{
    WhirlyGlobeView *globeView;
    SceneRendererES1 *renderer;
    WhirlyGlobeLayerThread *layerThread;
    WhirlyGlobe::RectSelectableSet selectables;
}

- (id)initWithGlobeView:(WhirlyGlobeView *)inGlobeView renderer:(SceneRendererES1 *)inRenderer;

- (void)startWithThread:(WhirlyGlobeLayerThread *)layerThread scene:(WhirlyGlobe::GlobeScene *)scene;

- (void)addSelectableRect:(WhirlyGlobe::SimpleIdentity)selectId rect:(Point3f *)pts;

- (void)addSelectableRect:(WhirlyGlobe::SimpleIdentity)selectId rect:(Point3f *)pts minVis:(float)minVis maxVis:(float)maxVis;

- (void)removeSelectable:(WhirlyGlobe::SimpleIdentity)selectId;

- (WhirlyGlobe::SimpleIdentity)pickObject:(Point2f)touchPt maxDist:(float)maxDist;

@end