カードをとじて、ひらいてするiPhoneアプリのサンプルコードを描いてみます。
#import “ViewController.h”
@import SceneKit;
@interface ViewController ()
@property (nonatomic, weak) SCNView *sceneView;
@property (nonatomic) BOOL open;
@end
@implementation ViewController
– (void)viewDidLoad {
[super viewDidLoad];
[self setupScene];
[self createCards];
[self createCamera];
}
– (void)setupScene {
SCNView *sv = [[SCNView alloc] initWithFrame:self.view.bounds];
sv.backgroundColor = [self color:0];
sv.scene = [SCNScene scene];
[self.view addSubview:sv];
sv.autoenablesDefaultLighting = YES;
self.sceneView = sv;
}
– (void)createCards {
for (int i=0; i<5; i++) {
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(-10, –16, 20, 32) cornerRadius:2];
SCNShape *s1 = [SCNShape shapeWithPath:path extrusionDepth:0.1];
s1.firstMaterial.diffuse.contents = [self color:3];
SCNNode *box1 = [SCNNode nodeWithGeometry:s1];
[path applyTransform:CGAffineTransformMakeScale(0.9, 0.92)];
SCNShape *s2 = [SCNShape shapeWithPath:path extrusionDepth:0.101];
s2.firstMaterial.diffuse.contents = [self color:2];
SCNNode *box2 = [SCNNode nodeWithGeometry:s2];
SCNNode *mark = [SCNNode node];
for (int j=0; j<=i; j++) {
SCNBox *m = [SCNBox boxWithWidth:1 height:1 length:0.103 chamferRadius:0];
m.firstMaterial.diffuse.contents = [self color:4];
SCNNode *n = [SCNNode nodeWithGeometry:m];
n.position = SCNVector3Make(j * 1.6, 12, 0);
[mark addChildNode:n];
}
SCNNode *boxNode = [SCNNode node];
boxNode.name = [NSString stringWithFormat:@”card%d”, i];
boxNode.position = SCNVector3Make(0, 0, i * 0.1);
[boxNode addChildNode:box1];
[boxNode addChildNode:box2];
[boxNode addChildNode:mark];
[self.sceneView.scene.rootNode addChildNode:boxNode];
boxNode.pivot = SCNMatrix4MakeTranslation(8, –15, 0);
boxNode.transform = SCNMatrix4Rotate(boxNode.transform, –1.2 + (0.5 * i), 0, 0, 1);
self.open = YES;
}
}
– (void)createCamera {
SCNNode *camera = [SCNNode node];
camera.camera = [SCNCamera camera];
camera.position = SCNVector3Make(0, 5, 70);
[self.sceneView.scene.rootNode addChildNode:camera];
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
self.open = !self.open;
if (self.open) {
[self.sceneView.scene.rootNode enumerateChildNodesUsingBlock:^(SCNNode *child, BOOL *stop) {
if ([child.name hasPrefix:@”card”]) {
[child runAction:[SCNAction rotateToX:0 y:0 z:0 duration:0.5]];
}
}];
} else {
[self.sceneView.scene.rootNode enumerateChildNodesUsingBlock:^(SCNNode *child, BOOL *stop) {
if ([child.name hasPrefix:@”card”]) {
int i = [[child.name substringFromIndex:4] intValue];
[child runAction:[SCNAction rotateToX:0 y:0 z:-1.2 + (0.5 * i) duration:0.5]];
}
}];
}
}
#define ColorHex(rgb) [UIColor colorWithRed:((rgb & 0xFF0000) >> 16)/255.0 green:((rgb & 0xFF00) >> 8)/255.0 blue:(rgb & 0xFF)/255.0 alpha:1.0]
– (UIColor *)color:(int)i {
if (i > 4) return nil;
int colors[] = {0x99C430, 0xD3CEAA, 0xFBF7E4, 0x424242, 0x8E001C};
return ColorHex(colors[i]);
}
@end