めくってバンザイ

タッチでめくるとバンザイという感じで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;

@end

@implementation ViewController

– (void)viewDidLoad {

    [super viewDidLoad];

    [self setupScene];

    

    [self createBasePicture];

    [self createCoverPicture];

}

– (void)setupScene {

    SCNView *sv = [[SCNView alloc] initWithFrame:self.view.bounds];

    sv.backgroundColor = [UIColor colorWithHue:0.14 saturation:0.2 brightness:1 alpha:1];

    sv.scene = [SCNScene scene];

    sv.autoenablesDefaultLighting = YES;

    [self.view addSubview:sv];

    

    self.sceneView = sv;

}

– (void)createBasePicture {

    float y0 = 0;

    float y1 = 2;

    float y2 = 6;

    float x0 = 0;

    float x1 = 4;

    UIBezierPath *path = [UIBezierPath bezierPath];

    [path moveToPoint:CGPointZero];

    [path addLineToPoint:CGPointMake(x0, y1)];

    [path addLineToPoint:CGPointMake(x1, y2)];

    [path addLineToPoint:CGPointMake(x1, y0)];

    [path closePath];

    SCNShape *shape = [SCNShape shapeWithPath:path extrusionDepth:0.1];

    shape.firstMaterial.diffuse.contents = [UIColor colorWithWhite:0.99 alpha:1];

    SCNNode *base = [SCNNode nodeWithGeometry:shape];

    [self.sceneView.scene.rootNode addChildNode:base];

    UIBezierPath *headPath = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:0.3 startAngle:0 endAngle:2.0 * M_PI clockwise:NO];

    headPath.flatness = 0.001;

    SCNShape *head = [SCNShape shapeWithPath:headPath extrusionDepth:0.1];

    head.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *headNode = [SCNNode nodeWithGeometry:head];

    headNode.position = SCNVector3Make(2, 3, 0.1);

    [base addChildNode:headNode];

    SCNBox *hand = [SCNBox boxWithWidth:0.7 height:0.2 length:0.1 chamferRadius:0.1];

    hand.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *handRNode = [SCNNode nodeWithGeometry:hand];

    handRNode.position = SCNVector3Make(1.5, 2.9, 0.1);

    handRNode.rotation = SCNVector4Make(0, 0, 1, –M_PI/3.0);

    [base addChildNode:handRNode];

    

    SCNNode *handLNode = [SCNNode nodeWithGeometry:hand];

    handLNode.position = SCNVector3Make(2.5, 2.9, 0.1);

    handLNode.rotation = SCNVector4Make(0, 0, 1, M_PI/3.0);

    [base addChildNode:handLNode];

    

    SCNBox *body = [SCNBox boxWithWidth:0.6 height:0.8 length:0.1 chamferRadius:0.1];

    body.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *bodyNode = [SCNNode nodeWithGeometry:body];

    bodyNode.position = SCNVector3Make(2, 2.3, 0.1);

    [base addChildNode:bodyNode];

    SCNBox *foot = [SCNBox boxWithWidth:0.28 height:0.6 length:0.1 chamferRadius:0.1];

    foot.firstMaterial.diffuse.contents = [UIColor blackColor];

    for (int i=0; i<2; i++) {

        SCNNode *footNode = [SCNNode nodeWithGeometry:foot];

        footNode.position = SCNVector3Make(i ? 1.85 : 2.15, 1.7, 0.1);

        [base addChildNode:footNode];

    }

    

}

– (void)createCoverPicture {

    float y1 = 0;

    float y2 = 4;

    float x0 = 0;

    float x1 = 4;

    

    UIBezierPath *path = [UIBezierPath bezierPath];

    [path moveToPoint:CGPointMake(x0, y1)];

    [path addLineToPoint:CGPointMake(x1, y2)];

    [path addLineToPoint:CGPointMake(x1, y1)];

    [path closePath];

    SCNShape *shape = [SCNShape shapeWithPath:path extrusionDepth:0.1];

    shape.firstMaterial.diffuse.contents = [UIColor colorWithWhite:0.95 alpha:1];

    SCNNode *base = [SCNNode nodeWithGeometry:shape];

    base.name = @”cover”;

    base.position = SCNVector3Make(0, 2, 0.2);

    [self.sceneView.scene.rootNode addChildNode:base];

    

    UIBezierPath *headPath = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:0.3 startAngle:0 endAngle:2.0 * M_PI clockwise:NO];

    headPath.flatness = 0.001;

    SCNShape *head = [SCNShape shapeWithPath:headPath extrusionDepth:0.1];

    head.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *headNode = [SCNNode nodeWithGeometry:head];

    headNode.position = SCNVector3Make(2, 1, 0.1);

    [base addChildNode:headNode];

    

    SCNBox *hand = [SCNBox boxWithWidth:0.6 height:0.2 length:0.1 chamferRadius:0.1];

    hand.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *handRNode = [SCNNode nodeWithGeometry:hand];

    handRNode.position = SCNVector3Make(1.5, 0.4, 0.1);

    handRNode.rotation = SCNVector4Make(0, 0, 1, M_PI/3.0);

    [base addChildNode:handRNode];

    

    SCNNode *handLNode = [SCNNode nodeWithGeometry:hand];

    handLNode.position = SCNVector3Make(2.5, 0.4, 0.1);

    handLNode.rotation = SCNVector4Make(0, 0, 1, –M_PI/3.0);

    [base addChildNode:handLNode];

    

    

    SCNBox *body = [SCNBox boxWithWidth:0.6 height:0.7 length:0.1 chamferRadius:0.1];

    body.firstMaterial.diffuse.contents = [UIColor blackColor];

    SCNNode *bodyNode = [SCNNode nodeWithGeometry:body];

    bodyNode.position = SCNVector3Make(2, 0.35, 0.1);

    [base addChildNode:bodyNode];

}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    SCNNode *cover = [self.sceneView.scene.rootNode childNodeWithName:@”cover” recursively:NO];

    if (cover.rotation.w == 0)

        [cover runAction:[SCNAction rotateByAngle:M_PI aroundAxis:SCNVector3Make(1, 1, 0) duration:0.5]];

    else

        [cover runAction:[SCNAction rotateByAngle:-M_PI aroundAxis:SCNVector3Make(1, 1, 0) duration:0.5]];

}

@end