René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Enhancement - SceneKitExtension / map a lat / lng coordinate to scenekit earth planet of where user is","articleBody":"```swift\r\n        let earthNode = PlanetoidGroupNode(planet: Planet.earth)\r\n        earthNode.updatePlanetLocation(earthAA.position())\r\n```\r\n\r\ncurrently these lines map SwiftAA into the scenekit.\r\nhowever, I don't believe there's any way to get scenekit camera to specific point  of latitude / longitude.\r\n\r\nthis plist contains a bunch of cities with lat / lngs\r\nhttps://github.com/op1000/EarthTravel/blob/master/EarthTravel/Resources/AllCititesToTravel_258.plist\r\n\r\n\r\n```objective-c\r\n\r\n        NSString* filePath = [[NSBundle mainBundle] pathForResource:@\"AllCititesToTravel_258\" ofType:@\"plist\"];\r\n        NSDictionary* objectData = [NSDictionary dictionaryWithContentsOfFile:filePath];\r\n        \r\n        NSArray* arrayList = [objectData valueForKeyPath:@\"list\"];\r\n        NSMutableArray* arrayCordinate = [[NSMutableArray alloc] init];\r\n        for (NSDictionary* dicInfo in arrayList) {\r\n            \r\n            NSString* cityName = dicInfo[@\"dest_name\"];\r\n            float lat = [dicInfo[@\"lat\"] floatValue];\r\n            float lng = [dicInfo[@\"lng\"] floatValue];\r\n            NSString* countryCode = [dicInfo objectForKey:@\"country_code\"];\r\n            \r\n            // drop some pins\r\n            KGLEarthCoordinate *pin = [KGLEarthCoordinate coordinateWithLatitude:lat\r\n                                                                    andLongitude:lng\r\n                                                                andPinIdentifier:cityName\r\n                                                                  andConturyCode:countryCode];\r\n            [arrayCordinate addObject:pin];\r\n        }\r\n        [self dropPinsAtLocations:arrayCordinate];\r\n\r\n\r\n-(void)dropPinsAtLocations:(NSArray *)pinArray\r\n{\r\n    // remove any existing pins\r\n    for (SCNNode *node in _currentPins) {\r\n        [node removeFromParentNode];\r\n    }\r\n    _currentPins = [NSMutableArray array];\r\n    \r\n    // create new pins\r\n    for (KGLEarthCoordinate *coord in pinArray) {\r\n        KGLPinNode *newPin = [KGLPinNode pinAtLatitude:coord.latitude\r\n                                          andLongitude:coord.longitude\r\n                                                 title:coord.pinIdentifier\r\n                                           countryCode:coord.contryCode];\r\n        if (coord.pinIdentifier) {\r\n            newPin.identifier = coord.pinIdentifier;\r\n        }\r\n        [_shadedNode addChildNode:newPin];\r\n        [_currentPins addObject:newPin];\r\n    }\r\n/*!\r\n * @discussion Convenience method for creating a pin, with internal nodes set up, at a specified location, assuming an Earth at the center of the scene with a radius of 50 units.\r\n * @param latitude The pin's latitude, in degrees.\r\n * @param longitude The pin's longitude, in degrees.\r\n * @return An instance of the KGLPinNode class.\r\n */\r\n\r\n+ (KGLPinNode *)pinAtLatitude:(float)latitude\r\n                 andLongitude:(float)longitude\r\n                        title:(NSString*)title\r\n                  countryCode:(NSString*)countryCode\r\n{\r\n    KGLPinNode *pin = [super node];\r\n\r\n    if (pin) {\r\n        pin.latitude = latitude;\r\n        pin.longitude = longitude;\r\n        pin.countryCode = countryCode;\r\n    }\r\n    \r\n    pin.name = @\"pinWrapper\";\r\n\r\n    SCNBox* pinScene = [SCNBox boxWithWidth:1.0 height:1.0 length:1.0*108.0/159.0 chamferRadius:0];\r\n\r\n    //SCNPyramid* pinScene = [SCNPyramid pyramidWithWidth:1.0 height:1.0 length:1.0];\r\n    SCNNode *pinNode = [SCNNode nodeWithGeometry:pinScene];\r\n    NSString* strCountryImagePath = [NSString stringWithFormat: @\"icon_%@\", countryCode];\r\n    {\r\n        // ambient light\r\n        SCNMaterial *greenMaterial              = [SCNMaterial material];\r\n        greenMaterial.diffuse.contents          = [UIColor clearColor];\r\n        greenMaterial.locksAmbientWithDiffuse   = YES;\r\n        \r\n        SCNMaterial *redMaterial                = [SCNMaterial material];\r\n        redMaterial.diffuse.contents            = [UIColor clearColor];\r\n        redMaterial.locksAmbientWithDiffuse     = YES;\r\n        \r\n        SCNMaterial *blueMaterial               = [SCNMaterial material];\r\n        blueMaterial.diffuse.contents           = [UIColor clearColor];\r\n        blueMaterial.locksAmbientWithDiffuse    = YES;\r\n        \r\n        SCNMaterial *yellowMaterial             = [SCNMaterial material];\r\n        yellowMaterial.diffuse.contents         = [UIColor clearColor];\r\n        yellowMaterial.locksAmbientWithDiffuse  = YES;\r\n        \r\n        SCNMaterial *purpleMaterial             = [SCNMaterial material];\r\n        purpleMaterial.diffuse.contents         = strCountryImagePath; // 위를 쳐다보는 면\r\n        purpleMaterial.locksAmbientWithDiffuse  = YES;\r\n        \r\n        SCNMaterial *magentaMaterial            = [SCNMaterial material];\r\n        magentaMaterial.diffuse.contents        = [UIColor clearColor];\r\n        magentaMaterial.locksAmbientWithDiffuse = YES;\r\n        \r\n        \r\n        pinScene.materials =  @[greenMaterial,  redMaterial,    blueMaterial,\r\n                           yellowMaterial, purpleMaterial, magentaMaterial];\r\n    }\r\n    \r\n    // add the pin geometry to the pin node\r\n    [pin addChildNode:pinNode];\r\n    \r\n    // pins are small, especially from directly above or zoomed out, so wrap a larger rectangular node around the pin\r\n    // this will create a greater touch area\r\n    SCNBox *touchBrick = [SCNBox boxWithWidth:5.0f height:7.5f length:5.0f chamferRadius:0];\r\n    SCNNode *touchNode = [SCNNode nodeWithGeometry:touchBrick];\r\n    touchNode.hidden = YES;\r\n    touchNode.name = @\"TouchPin\";\r\n    [pin addChildNode:touchNode];\r\n    \r\n    // position the pin\r\n    // calculate the pin's position along the Y axis of the Earth, based on the given latitude\r\n    float yPos = sinf(DEGREES_TO_RADIANS(latitude)) * 27.8f*ZOOME_RATIO;\r\n    // calculate what the radius of the horizontal circle that cuts through the Earth is at the given Y position\r\n    float localRadius = [KGLEarthCommonMath radiusOfCircleBisectingSphereOfRadius:27.8f*ZOOME_RATIO atHeight:yPos];\r\n    // using the local radius, calculate the X and Z positions of the pin, based on the given longitude\r\n    HorizontalCoords coords = [KGLEarthCommonMath horizontalCoordinatesAtDegrees:longitude ofSphereRadius:localRadius];\r\n    pin.position = SCNVector3Make(-1 * coords.x, yPos, coords.z);\r\n    \r\n    // rotate the pin so it stands vertically at 90 degrees from the surface of the Earth\r\n    // first, set the pin's euler angles such that it lies flat against the surface of the Earth, given the pin's location\r\n    // the yaw angle positions the pin so it faces out from the surface of the Earth at its location\r\n    float yawAngle = atan2f(-1 * coords.x, coords.z);\r\n    // the pitch angle tilts the pin so it lies on the ground\r\n    float pitchAngle = -1 * DEGREES_TO_RADIANS(latitude) - M_PI_2;\r\n    pin.eulerAngles = SCNVector3Make(pitchAngle, yawAngle, 0);\r\n    \r\n    // now rotate the pin by 180 degrees vertically, so it stands up\r\n    SCNMatrix4 latRotation = SCNMatrix4MakeRotation(DEGREES_TO_RADIANS(180),1, 0, 0);\r\n    pin.transform = SCNMatrix4Mult(latRotation, pin.transform);\r\n    \r\n    //==============================\r\n    // label\r\n    //==============================\r\n    SCNText *text = [SCNText textWithString:title extrusionDepth:0.1];\r\n    \r\n    SCNMaterial *magentaMaterial = [SCNMaterial material];\r\n    magentaMaterial.diffuse.contents = [UtilManager colorWithHexString:@\"ec4f30\"];\r\n    magentaMaterial.locksAmbientWithDiffuse = YES;\r\n    text.materials = @[magentaMaterial];\r\n    \r\n    SCNNode *textNode = [SCNNode nodeWithGeometry:text];\r\n    textNode.position = SCNVector3Make(-1+M_PI_2, 0, 0);\r\n    textNode.transform = SCNMatrix4Mult(SCNMatrix4MakeScale(0.05, 0.05, 0.05), textNode.transform);\r\n    [pin addChildNode:textNode];\r\n        \r\n    return pin;\r\n}\r\n}\r\n```\r\n\r\n\r\n","author":{"url":"https://github.com/johndpope","@type":"Person","name":"johndpope"},"datePublished":"2017-11-17T20:47:31.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/47/AugmentedSolarSystem/issues/47"}