ios - CATransform3D を使用する CATransformLayer iOS で、遠近角度を右から左に変更します。

Question

1 つの 3D ブロックを描画しようとしています!

2 つのレイヤーを使用すると、右側の3D で見栄えがします。添付の画像を参照してください。

左側のマイナーな変更のために同じコードを再利用しようとしているとき! 奇妙に見えます。以下の添付画像を参照してください。

視点の角度を変えることができれば改善できると思いますが、それを達成する方法がわかりません。

transform.m34パースペクティブに使用します。どんな助けでも大歓迎です。

これが私が使用しているソースコードです。

// left Bar
/*{
    CGFloat aViewWidth = 1000;

    CAGradientLayer *blueLayer = [CAGradientLayer layer];
    blueLayer.anchorPoint = P(0,0.5);

    blueLayer.colors = @[
                        (id)aBarColor.CGColor,
                        (id)[UIColor blackColor].CGColor
                        ];
    blueLayer.startPoint = CGPointMake(0.0, 0.5);
    blueLayer.endPoint = CGPointMake(1.5, 0.5);

    blueLayer.frame = CGRectMake(125, 0, aViewWidth, 250);
    blueLayer.transform = CATransform3DRotate(CATransform3DIdentity, M_PI_2, 0.0f, 1.0f, 0.0f);


    [baseLayer addSublayer:blueLayer];

    CAGradientLayer *redLayer = [CAGradientLayer layer];

    redLayer.colors = @[
                        (id)[UIColor whiteColor].CGColor,
                        (id)aBarColor.CGColor
                        ];
    redLayer.startPoint = CGPointMake(-10.0, 0.5);
    redLayer.endPoint = CGPointMake(1.0, 0.5);
    redLayer.anchorPoint = P(0.5,0.5);

    redLayer.frame = CGRectMake(0, 0, 125, 250);

    [baseLayer addSublayer:redLayer];

    CGFloat perspective = -1000; //This relates to the m34 perspective matrix.

    CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;
    rotationAndPerspectiveTransform.m34 = 1.0 / perspective;
    rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, degreesToRadians(-10.0) , 0.0f, 1.0f, 0.0f);

    baseLayer.sublayerTransform = rotationAndPerspectiveTransform;

    [self.view.layer addSublayer:baseLayer];

    return;

    CABasicAnimation *transformAnimation = [CABasicAnimation animationWithKeyPath: @"sublayerTransform"];
    transformAnimation.fillMode = kCAFillModeForwards;
    transformAnimation.removedOnCompletion = NO;
    {

        CGFloat w0 = 0;
        CGFloat w1 = aViewWidth;

        w0 = w0 * sin(degreesToRadians(10)) - perspective * cos(degreesToRadians(10));
        w1 = w1 * sin(degreesToRadians(10)) - perspective * cos(degreesToRadians(10));

        CGFloat newWidth = w1 - w0;
        newWidth = newWidth * 1.2;

        CATransform3D newTransform = CATransform3DIdentity;
        newTransform.m34 = 1.0 / perspective;
        newTransform = CATransform3DRotate(newTransform, degreesToRadians(-10) , 0.0f, 1.0f, 0.0f);
        newTransform = CATransform3DScale(newTransform, 1.0f, 1.0f, 1.0f);
        newTransform = CATransform3DTranslate(newTransform, newWidth, 0.0f, 0.0f);

        transformAnimation.toValue = [NSValue valueWithCATransform3D:newTransform];
        transformAnimation.duration = 10.0;
    }
    [baseLayer addAnimation:transformAnimation forKey:@"transform"];
}*/

// Right Bar
{
    CGFloat aViewWidth = 1000;

    CAGradientLayer *redLayer = [CAGradientLayer layer];

    redLayer.colors = @[
                        (id)aBarColor.CGColor,
                        (id)[UIColor blackColor].CGColor
                    ];
    redLayer.startPoint = CGPointMake(0.0, 0.5);
    redLayer.endPoint = CGPointMake(1.5, 0.5);

    redLayer.frame = CGRectMake(0, 0, aViewWidth, 250);
    redLayer.position = CGPointMake(0,0);
    redLayer.anchorPoint = CGPointMake(0, 0.5); // right
    redLayer.transform = CATransform3DRotate(CATransform3DIdentity, M_PI_2,0.0f, 1.0f, 0.0f);

    [baseLayer addSublayer:redLayer];

    CAGradientLayer *blueLayer = [CAGradientLayer layer];

    blueLayer.colors = @[
                        (id)[UIColor whiteColor].CGColor,
                        (id)aBarColor.CGColor
                        ];
    blueLayer.startPoint = CGPointMake(-10.0, 0.5);
    blueLayer.endPoint = CGPointMake(1.0, 0.5);

    blueLayer.frame = CGRectMake(0, 0, 125, 250);
    blueLayer.anchorPoint = CGPointMake(0, 0.5); // right
    blueLayer.position = CGPointMake(0,0);

    [baseLayer addSublayer:blueLayer];

    CGFloat perspective = -1 * aViewWidth; //This relates to the m34 perspective matrix.

    CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;
    rotationAndPerspectiveTransform.m34 = 1.0 / perspective;
    rotationAndPerspectiveTransform = CATransform3DScale(rotationAndPerspectiveTransform, 0.1f, 0.1f, 0.1f);

    baseLayer.sublayerTransform = rotationAndPerspectiveTransform;

    [self.view.layer addSublayer:baseLayer];

    CABasicAnimation *transformAnimation = [CABasicAnimation animationWithKeyPath: @"sublayerTransform"];
    transformAnimation.fillMode = kCAFillModeForwards;
    transformAnimation.removedOnCompletion = NO;
    {

        CGFloat w0 = 0;
        CGFloat w1 = aViewWidth;

        w0 = w0 * sin(degreesToRadians(10)) - perspective * cos(degreesToRadians(10));
        w1 = w1 * sin(degreesToRadians(10)) - perspective * cos(degreesToRadians(10));

        CGFloat newWidth = w1 - w0;
        newWidth = newWidth * 1.225;

        CATransform3D newTransform = CATransform3DIdentity;
        newTransform.m34 = 1.0 / perspective;
        newTransform = CATransform3DRotate(newTransform, degreesToRadians(10) , 0.0f, 1.0f, 0.0f);
        newTransform = CATransform3DScale(newTransform, 1.0f, 1.0f, 1.0f);
        newTransform = CATransform3DTranslate(newTransform, newWidth, 0.0f, 0.0f);

        transformAnimation.toValue = [NSValue valueWithCATransform3D:newTransform];
        transformAnimation.duration = 10.0;
    }
    [baseLayer addAnimation:transformAnimation forKey:@"transform"];
}