iOS Caemitterlayer particle engine

1, Caemittercell particle emitter related properties:

/*coreanimation-caemitterlayer.h Copyright (c) 2007-2017, Apple Inc. All rights reserved. *///The new subclass introduced in iOS5, the particle engine! Particle effects can be achieved! #import<QuartzCore/CALayer.h>@classCaemittercell; Ns_assume_nonnull_beginca_class_available (10.6,5.0,9.0,2.0)@interfaceCaemitterlayer:calayer//Particle emitter@property (nullable, copy) Nsarray<caemittercell *> *emittercells;//Caemittercell (particle)@propertyfloatbirthrate;//birth rate, the number of objects generated per second, the default of 1 seconds a@propertyfloatLifetime//Object Life Time default 1 seconds@property cgpoint emitterposition;//position of the emitter in the XY plane@property CGFloat emitterzposition;//position of the emitter in the Z plane@property cgsize emittersize;//emission source Size@property CGFloat emitterdepth;//depth of transmitter@property (copy) NSString*emittershape;//Emitter Source Shape@property (copy) NSString*emittermode;//Launch Mode@property (copy) NSString*rendermode;//Emitter Rendering Mode@property BOOL preservesdepth;//whether to turn on the three-dimensional effect, default no@propertyfloatVelocity//the speed at which each particle moves@propertyfloatScale//the initial zoom of each object is small@propertyfloatSpin//self-rotating speed@property unsignedintSeed//initialize the seed generated by the random number@end/** ' Emittershape ' values. **/Ca_extern NSString*ConstKcaemitterlayerpoint//point, the particles are emitted from a point! Ca_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayerline//lines, particles emitted from a lineCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayerrectangle//rectangle in which particles are emitted from a rectangleCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayercuboid//cube, z screen has effectCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayercircle//Circular, particles emitted from a circleCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayersphere//Spherical--foreverguard Blog ParkCa_available_starting (10.6,5.0,9.0,2.0);/** ' Emittermode ' values. **/Ca_extern NSString*ConstKcaemitterlayerpoints//emitted from the transmitterCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayeroutline//emitted from the edge of the transmitterCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayersurface//emitted from the transmitter surfaceCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayervolume//sent from the transmitter center .Ca_available_starting (10.6,5.0,9.0,2.0);/** ' Rendermode ' values. **/Ca_extern NSString*ConstKcaemitterlayerunordered//particles appear unorderedCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayeroldestfirst//first-declared particle rendering at the topCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayeroldestlast//post-declared particle rendering at the topCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayerbacktofront//render in the order of the z-axisCa_available_starting (10.6,5.0,9.0,2.0); Ca_extern nsstring*ConstKcaemitterlayeradditive//Particle BlendingCa_available_starting (10.6,5.0,9.0,2.0); Ns_assume_nonnull_end

2. Related properties of Caemittercell particles:

#import<QuartzCore/CALayer.h>ns_assume_nonnull_beginca_class_available (10.6,5.0,9.0,2.0)@interfaceCaemittercell:nsobject <nssecurecoding, camediatiming>{@private    void*_attr[2]; void*_state; uint32_t _flags;}+ (instancetype) Emittercell;//Initialize Method@property (nullable, copy) NSString*name;//the name of the particle@property (Getter=isenabled) BOOL enabled;//the color of the particles@propertyfloatbirthrate;//the speed at which particles are produced@propertyfloatLifetime//Life cycle@propertyfloatLifetimerange;//life cycle increase/decrease range@property cgfloat emissionlatitude;//emission angle of the particle z-axis direction@property CGFloat emissionlongitude;//the emission angle of the particle in the XY plane@property cgfloat emissionrange;//Particle emission angle range@property cgfloat Velocity;//Particle Motion Velocity@property CGFloat Velocityrange;//particle speed Increase/decrease range@property cgfloat xacceleration;//particle x-direction acceleration@property CGFloat yacceleration;//acceleration in the y direction of the particle@property CGFloat zacceleration;//acceleration of particle Z-direction@property cgfloat scale;//Particle Scale Scale@property CGFloat Scalerange;//Particle Scale Scale range@property CGFloat scalespeed;//Particle scale speed@property cgfloat spin;//particle self-rotation@property CGFloat Spinrange;//particle self-rotating range@property (nullable) cgcolorref color;//the color of the particles@propertyfloatRedrange;//Particle color red Change range@propertyfloatGreenrange;//Particle color green Change range@propertyfloatBluerange;//Particle color blue Change range@propertyfloatAlpharange;//Particle Transparency Alpha Change range@propertyfloatRedSpeed;//particle color red changes speed in the life cycle@propertyfloatGreenspeed;//particle color green changes speed in the life cycle@propertyfloatBluespeed;//particle color blue changes speed in the life cycle@propertyfloatAlphaspeed;//Particle Transparency alpha changes speed in the life cycle@property (Nullable, Strong)IDContents//the rendered particle is a picture@property cgrect contentsrect;//Render Range@property cgfloat Contentsscale;//Rendering Area Scaling@property (copy) NSString*minificationfilter;//Zoom Out@property (copy) NSString *magnificationfilter;//Zoom in@propertyfloatMinificationfilterbias;//Shrink Factor//The default value is Kcafilterlinear ' linear '//There are 3 settings in: Kcafilterlinear,kcafilternearest,kcafiltertrilinear//kcafilterlinear: Default value, scaled smooth, but prone to blur effect//kcafiltertrilinear: Basic and Kcafilterlinear are the same//kcafilternearest: Fast speed does not blur, but degrades quality and pixelated images@property (nullable, copy) Nsarray<caemittercell *> *emittercells;//all particles@property (nullable, copy) Nsdictionary*style;@end

iOS Caemitterlayer particle engine