球体を平べったい板に変形させるiPhoneアプリのサンプルコード
#import “ViewController.h”
@import SceneKit;
@interface ViewController ()
@property (nonatomic, weak) SCNView *sceneView;
@end
@implementation ViewController
– (void)viewDidLoad {
[super viewDidLoad];
[self setupScene];
[self createObjectWithMorph];
[self createCamera];
}
– (void)setupScene {
SCNView *sv = [[SCNView alloc] initWithFrame:self.view.bounds];
sv.scene = [SCNScene scene];
sv.backgroundColor = [UIColor grayColor];
sv.allowsCameraControl = YES;
sv.autoenablesDefaultLighting = YES;
[self.view addSubview:sv];
self.sceneView = sv;
}
– (void)createObjectWithMorph {
SCNBox *box = [SCNBox boxWithWidth:3 height:3 length:3 chamferRadius:1.5];
box.firstMaterial.diffuse.contents = [UIColor orangeColor];
box.chamferSegmentCount = 50;
SCNNode *boxNode = [SCNNode nodeWithGeometry:box];
boxNode.name = @”obj”;
[self.sceneView.scene.rootNode addChildNode:boxNode];
SCNMorpher *mopher = [[SCNMorpher alloc] init];
SCNBox *box2 = [SCNBox boxWithWidth:3 height:10 length:1 chamferRadius:1.5];
box2.chamferSegmentCount = 50;
SCNBox *box3 = [SCNBox boxWithWidth:10 height:1 length:3 chamferRadius:1.5];
box3.chamferSegmentCount = 50;
// they must contain the same number and structural arrangement of vertices.
mopher.targets = @[box2, box3];
boxNode.morpher = mopher;
}
– (void)createCamera {
SCNNode *camera = [SCNNode node];
camera.camera = [SCNCamera camera];
camera.position = SCNVector3Make(0, 0, 15);
[self.sceneView.scene.rootNode addChildNode:camera];
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
SCNNode *obj = [self.sceneView.scene.rootNode childNodeWithName:@”obj” recursively:false];
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
CABasicAnimation *a1 = [CABasicAnimation animationWithKeyPath:@”morpher.weights[0]”];
a1.fromValue = @0.0;
a1.toValue = @1.0;
a1.autoreverses = YES;
a1.duration = 0.5;
CABasicAnimation *a2 = [CABasicAnimation animationWithKeyPath:@”morpher.weights[1]”];
a2.fromValue = @0.0;
a2.toValue = @1.0;
a2.duration = 0.5;
a2.beginTime = 1.0;
a2.autoreverses = YES;
CAAnimationGroup *group = [CAAnimationGroup animation];
group.animations = @[a1, a2];
group.duration = 2.0;
group.repeatCount = 100;
[obj addAnimation:group forKey:nil];
});
}
@end