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canvas's Introduction

saber-canvas

npm

use canvas easily!

npm install saber-canvas

API

关于 Vector2D API 可以参考saber-vector

Rect

所有类型的基类

构造函数:

new Rect(w, h?)

属性:

  1. type 类型标识[请不要变更此属性]
  2. x
  3. y
  4. width
  5. height
  6. getPosition 获取坐标
  7. setPosition 设置坐标
setPosition(2) // (x, y) -> (2, 2)

setPosition(2, 3) // (x, y) -> (2, 3)
  1. getContentSize 获取大小
  2. setSize 设置大小
setSize(100) // (width, height) -> (100, 100)

setSize(100, 200) // (width, height) -> (100, 200)

Node

节点类型

构造函数:

new Node(w, h?)

扩充:

  1. color 颜色属性
  2. setColor 设置颜色
setColor('red')

Label

文字节点

构造函数:

new Label(text, fontSize?)

扩充:

  1. fontSize 字体大小
  2. fontStyle 字体样式
  3. text 文本内容
  4. setFontSize 设置字体大小
  5. setFontStyle 设置字体样式
  6. setText 设置文本内容

Sprite

图像节点

构造函数:

new Sprite(srcUrl)

扩充:

  1. img 图像 dom 节点
  2. setSrc 设置 src 路径

Examples

new Canvas('hello', 640, 480)
  .draw(new Node(640, 480))
  .draw(new Label('hello world!').setPosition(300, 20))
  .draw(new Node(100, 200).setColor('blue').setPosition(200, 200))

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