iOS control Code Transform learning notes

1. Picture settings (pan, zoom, rotate)

Create a Transform property

//when the button is clicked, you can only perform an upward rotation//Pi m_pi_4 45 degree rotation 1. Cgaffinetransform transforms=cgaffinetransformmakerotation (m_pi_4);//zoom can be performed multiple times when the button is clicked//Self.image.transfrom Gets the original location image is the property name of the picture definition 2. Cgaffinetransform TRANSFORMS =cgaffinetransformrotate (Self.image.transform, m_pi_4); //when the button is clicked, you can pan up multiple times//Self.view.transfrom Get the original location//Y-Axis 0 remains motionless//X-axis-50 pan up 3. Cgaffinetransform transforms = cgaffinetransformmaketranslate (0, - -); //when the button is clicked, the pan can be executed multiple times 4. Cgaffinetransform transforms = cgaffinetransformtranslate (Self.image.transform,0, - -); //when the button is clicked, only one zoom up is performed//zoom in 1.5 times times such as: 0.5 is reduced  5. Cgaffinetransform transforms= Cgaffinetransformmakescale (1.5,1.5);//zoom can be performed multiple times when the button is clicked  6. Cgaffinetransform transforms = Cgaffinetransformscale (Self.image.transform,0.5,0.5); //assign a value to a button 　 7. Self.image.transform =transforms; //Restore originally  8. Self.image.transform =cgaffinetransformidentity; //Animation Execution Code 9. [UIView animatewithduration:3animations:^{self.image.transform= Cgaffinetransformtranslate (Self.image.transform,0, - -); Self.image.transform= Cgaffinetransformscale (Self.image.transform,0.5,0.5); Slef.image.transform=cgaffinetransformrotate (Self.image.transform, m_pi_4); }];

iOS control Code transform learning notes