struct CATransform3D
{
CGFloat m11 (x-axis scaling), m12 (y-axis shearing), m13, m14 (x-axis stretching);
CGFloat m21 (x-axis shear), m22 (y-axis shrink), m23, m24 (y-axis stretch);
CGFloat m31, m32, m33, m34;
CGFloat m41 (x-axis translation), m42 (y-axis translation), m43 (z-axis translation), m44 (zoom in);
};
Example:
Comparison chart
UIImageView *img = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
img.image = [UIImage imageNamed:@"11"];
[self.view addSubview:img];
Modify the figure
UIImageView *caimg = [[UIImageView alloc]initWithFrame:CGRectMake(100, 200, 100, 100)];
caimg.image = [UIImage imageNamed:@"11"];
[self.view addSubview:caimg];
1. Parallel movement
CATransform3DMakeTranslation(tx,ty,tz)
tx: move in the x-axis direction, right move is a positive number
ty: move in the y-axis direction, and move down is a positive number
tz: move in the z-axis direction, the outward move is a positive number
CATransform3D translation = CATransform3DMakeTranslation(0.0, 80.0, 5.0);
caimg.layer.transform = translation;
2. Zoom
CATransform3DMakeScale(CGFloat sx, CGFloat sy, CGFloat sz)
sx: zoom in the x-axis direction, greater than 1 zoom. less than 1 zoom out
sy: scale in the y-axis direction, greater than 1 to zoom in. less than 1 zoom out
sz: zoom in the z-axis direction, greater than 1 zoom. less than 1 zoom out
CATransform3D scale = CATransform3DMakeScale(2, 2, 5);
caimg.layer.transform = scale;
3. Rotation
CATransform3DMakeRotation (CGFloat angle, CGFloat x,CGFloat y, CGFloat z)
angle: rotation angle
x: rotate around the x-axis, the value range is -1 to 1
y: rotate around the y-axis, the value range is -1 to 1
z: rotate around the z axis, the value range is -1～1
CATransform3D rotation = CATransform3DMakeRotation(M_PI/3, 1, 1, 1); caimg.layer.transform = rotation;
4. Compound row
CATransform3DIsIdentity (CATransform3D t)
t: CATransform3D type, can be attached
CATransform3DTranslate (CATransform3D t, CGFloat tx,
CGFloat ty, CGFloat tz)
CATransform3DScale (CATransform3D t, CGFloat sx,
CGFloat sy, CGFloat sz)