Working with Other Node Types
【Working with Other Node Types】
【Shape Nodes Draw Path-Based Shapes】
The SKShapeNode class draws a standard Core Graphics path.
You can see from the code that the shape has three essential elements:
- The interior of the shape is filled. The fillColor property specifies the color used to fill the interior.
- The outline of the shape is rendered as a line. The strokeColor and lineWidth properties define how the line is stroked.
- A glow extends from the outline. The glowWidth and strokeColor properties define the glow.
【A Video Node Plays a Movie】
The SKVideoNode class uses the AV Foundation framework to display movie content.
【Emitter Nodes Create Particle Effects】
When an SKEmitterNode object is placed in a scene, it automatically creates and renders new particles. You use emitter nodes to automatically create special effects, including rain, explosions, or fire.
A particle is similar to an SKSpriteNode object; it renders a textured or untextured image that is sized, colorized, and blended into the scene. However, particles differ from sprites in two important ways:
- A particle’s texture is always stretched uniformly.
- Particles are not represented by objects in Sprite Kit. This means you cannot perform node-related tasks on particles, nor can you associate physics bodies with particles to make them interact with other content.
Particles are purely visual objects, and their behavior is entirely defined by the emitter node that created them. The emitter node contains many properties to control the behavior of the particles it spawns, including:
- The birth rate and lifetime the particle. You can also specify the maximum number of particles that are spawned before the emitter turns itself off.
- The starting values of the particle, including its position, orientation, color, and size. These starting values are typically randomized.
- The changes to apply to the particle over its lifetime. Typically, these are specified as a rate-of-change over time. For example, you might specify that a particle rotates at a particular rate, in radians per second. The emitter automatically updates the particle data each frame. In most cases, you can also create more sophisticated behaviors using keyframe sequences. For example, you might specify a keyframe sequence for a particle so that it starts out small, scales up to a larger size, then shrinks before dying.
【Use the Particle Emitter Editor to Experiment with Emitters】
内置Particle模板,如下,通过File->Resource->SpriteKit Particle 来添加内置模板到应用程序。
Inspector中可以修改Particle效果,立即生效。
Particle Textrue用于修改粒子使用的texture,如下面两图使用了不同的ParticleTexture,
Setting the Number of Particles Created
Setting a Particle’s Life Expectancy
Working with Other Node Types的更多相关文章
- Working with Other Node Types II
[Working with Other Node Types II] An SKCropNode object does not directly render content, like a spr ...
- tbb flow graph node types
- XML DOM 节点类型(Node Types)
节点类型 下面的表格列出了不同的 W3C 节点类型,以及它们可拥有的子元素: 节点类型 描述 子元素 Document 表示整个文档(DOM 树的根节点) Element (max. one) Pro ...
- 创建Node.js TypeScript后端项目
1.安装Node.js扩展,支持TypeScript语法 npm install -g typescript npm install -g typings 2.创建项目目录project_fold ...
- union 类型(即sum types)在golang语言中的实现
http://www.jerf.org/iri/post/2917 Sum Types in Go posted Jun 02, 2013 in Programming, Golang, Haskel ...
- [转]XML中元素(Element)与节点(Node)的区别
前言: element是特殊的node 一段纯文本即text-node也是node 但不是element w3c的原话是 A node can be an element node, an attri ...
- 前端使用express+node实现接口模拟及websocket通讯
简述如何使用node+express实现接口连接及入门websocket通讯.使用技术栈:node + express + typescript + websocket. 1.接口实现 这里描述前端如 ...
- MongoDB 搭建Node.js开发环境
理解Mongoose Elegant MongoDB object modeling for Node.js 安装Mongoose $ cnpm install --save mongoose ...
- 搭建Node.js Redis开发环境
创建项目 初始化为node项目 $npm init 安装redis 安装@types/node, @types/redis, typescript 初始化TypeScript 配置ts ...
随机推荐
- KEYUSE
typedef struct keyuse_t { TABLE *table; Item *val; /**< or value if no field */ table_map used_ta ...
- SVG 动画实现弹性的页面元素效果
Codrops 分享了一些给SVG元素加上弹性动画的灵感.实现的思路是把一个SVG元素整合成一个组件,然后从一个路径弹性动画到另一个.这种效果可以应用到像菜单,按钮或其它元素,使得交互更有趣,看起更原 ...
- [转]C#中的?和??
原文链接:http://msdn.microsoft.com/zh-tw/library/2cf62fcy%28VS.80%29.aspx 使用可為 Null 的型別 (C# 程式設計手冊) Visu ...
- mysql在update时,从其他select结果集更新表
需要使用join,例如 select g.id,g.res_count,count(gr.r_id) cnt from mb_game_res gr left join mb_game g on gr ...
- where group by联合使用
where group by联合使用 select 列a,聚合函数 from 表名 where 过滤条件 group by 列a having 过滤条件 group by 字句也和where条件语 ...
- Less的学习(一)
1.html部分 <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head& ...
- 如何使用 Java 中的数组
Java 中操作数组只需要四个步骤: 1. 声明数组 语法: 数据类型[ ] 数组名: 或者 数据类型 数组名[ ]: 其中,数组名可以是任意合法的变量名,如: 2. 分配空间 简单地说,就是指 ...
- 最全的PHP开发Android应用程序
第一部分是指在Android系统的手机上直接写PHP脚本代码并立即运行: 第二部分则继续讲解如何把写好的PHP脚本代码打包成akp安装文件. 首先,在手机上安装两个apk包. 一个是SL4A(Scri ...
- 阻塞、非阻塞的概念和select函数的阻塞功能
其它文档: http://www.cnitblog.com/zouzheng/archive/2010/11/25/71711.html (1)阻塞block 所谓阻塞方式block,顾名思义 ...
- 【Android】不弹root请求框检测手机是否root
由于项目需要root安装软件,并且希望在合适的时候引导用户去开启root安装,故需要检测手机是否root. 最基本的判断如下,直接运行一个底层命令.(参考https://github.com/Trin ...