点を数字のゼロに変形させる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) int count;
@end
@implementation ViewController
– (void)viewDidLoad {
[super viewDidLoad];
[self setupScene];
[self createZero];
}
– (void)setupScene {
SCNView *sv = [[SCNView alloc] initWithFrame:self.view.bounds];
sv.scene = [SCNScene scene];
sv.backgroundColor = [self color:0];
sv.autoenablesDefaultLighting = YES;
sv.allowsCameraControl = YES;
[self.view addSubview:sv];
self.sceneView = sv;
}
– (void)createZero {
for (int i=0; i<4; i++) {
for (int j=0; j<9; j++) {
if (j == 4) continue;
SCNBox *b = [SCNBox boxWithWidth:1 height:1 length:1 chamferRadius:0.1];
b.firstMaterial.diffuse.contents = [self color:i];
SCNNode *bNode = [SCNNode nodeWithGeometry:b];
bNode.name = [NSString stringWithFormat:@”%d”, j];
bNode.position = SCNVector3Make(i * 4, 0, 0);
[self.sceneView.scene.rootNode addChildNode:bNode];
}
}
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
if (self.count == 0) {
[self.sceneView.scene.rootNode.childNodes filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(SCNNode *node, NSDictionary *bindings) {
if ([@[@”2″, @”5″, @”8″] indexOfObject:node.name] != NSNotFound) {
[node runAction:[SCNAction moveByX:-1 y:0 z:0 duration:0.5]];
} else if ([@[@”0″, @”3″, @”6″] indexOfObject:node.name] != NSNotFound) {
[node runAction:[SCNAction moveByX:1 y:0 z:0 duration:0.5]];
}
return NO;
}]];
}
else if (self.count == 1) {
[self.sceneView.scene.rootNode.childNodes filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(SCNNode *node, NSDictionary *bindings) {
if ([@[@”0″, @”1″, @”2″] indexOfObject:node.name] != NSNotFound) {
[node runAction:[SCNAction moveByX:0 y:1.1 z:0 duration:0.5]];
} else if ([@[@”6″, @”7″, @”8″] indexOfObject:node.name] != NSNotFound) {
[node runAction:[SCNAction moveByX:0 y:-1.1 z:0 duration:0.5]];
}
return NO;
}]];
}
else if (self.count == 2) {
[self.sceneView.scene.rootNode.childNodes enumerateObjectsUsingBlock:^(SCNNode *n, NSUInteger idx, BOOL *stop) {
n.physicsBody = [SCNPhysicsBody dynamicBody];
}];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self.sceneView.scene.rootNode.childNodes enumerateObjectsUsingBlock:^(SCNNode *n, NSUInteger idx, BOOL *stop) {
[n removeFromParentNode];
}];
[self createZero];
});
}
self.count = (self.count + 1) % 3;
}
#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 colorCode[] = {0x979926, 0x38CCB5, 0xEEFF8E, 0xFFD767, 0xCC2A09};
return ColorHex(colorCode[i]);
}
@end