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@spritejs/shapes

v1.1.7

Published

[Test-Online](https://spritejs.github.io/sprite-extend-shapes/docs/website/)

Downloads

5

Readme

sprite-extend-shapes

Test-Online

项目说明

sprite-extend-shapes 是基于SpriteJS的常用几何图形扩展库。当前支持的图形:

Shape

Shape 类继承自 sprite-coreBaseSprite,是该图形扩展库所有图形的基类。

Polyline 折线

Ployline 用于绘制线条。

| 属性 | 说明 | 默认值 | | :-------: | :------------------: | :----------------: | | points | 各个连接点的坐标 | null | | color | 连接点之间连线的颜色 | rgba(0, 0, 0, 1) | | lineWidth | 线条宽度 | 1 | | lineCap | 线条末端绘制样式 | round | | lineJoin | 两线条交汇处样式 | round |

示例:

polyline

const polyline = new Polyline();
polyline.attr({
  color: {
    vector: [0, 0, 150, 150],
    colors: [{offset: 0, color: 'red'}, {offset: 1, color: 'green'}]
  },
  lineWidth: 10,
  points: [[0, 0], [0, 100], [200, -50]],
  bgcolor: '#eee'
});

Arc 弧线

Arc 用于绘制弧线。

| 属性 | 说明 | 默认值 | | :-----------: | :----------------------------: | :------: | | center | 绘制弧线的中心点 | null | | startPoint | 弧线绘制的起点 | [0, 0] | | angle | 绘制弧线转过的角度 | 0 | | color | 弧线的颜色 | #000 | | lineWidth | 弧线宽度 | 1 | | anticlockwise | 当该值为true时,将逆时针绘制 | false |

示例:

arc

const arc = new Arc();
arc.attr({
  center: [100, 100],
  startPoint: [0, 0],
  angle: (Math.PI / 2) * 0.75,
  lineWidth: 5
});

Polycurve 多重曲线

Polycurve 用于绘制多重曲线,其底层使用的是 canvas.bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) API(因此也可以理解为“绘制多个贝塞尔曲线”)。

| 属性 | 说明 | 默认值 | | :--------: | :----------------------------------------------------------: | :------: | | points | 绘制贝塞尔曲线的数组(注意数组的每一子数组长度应为 6) | [] | | startPoint | 绘制起点 | [0, 0] | | lineWidth | 曲线宽度 | 1 | | lineCap | 曲线末端绘制样式 | round | | lineJoin | 两曲线交汇处样式 | round |

示例:

polycurve

const polycurve = new Polycurve();
polycurve.attr({
  points: [[20, -10, 110, 50, -20, 40], [10, -10, 20, 50, 0, 0]],
  lineWidth: 5
});

Polygon 多边形

Polygon 用于绘制多边形。

| 属性 | 说明 | 默认值 | | :-------: | :------------: | :----------------: | | points | 各顶点的坐标 | null | | color | 边的颜色 | rgba(0, 0, 0, 1) | | fillColor | 多边形填充颜色 | rgba(0, 0, 0, 1) | | lineWidth | 线条宽度 | 1 | | lineCap | 边末端绘制样式 | round | | lineJoin | 两边交汇处样式 | round |

示例:

polygon

const polygon = new Polygon();
polygon.attr({
  color: {
    vector: [0, 0, 150, 150],
    colors: [{offset: 0, color: 'red'}, {offset: 1, color: 'green'}]
  },
  fillColor: 'yellow',
  points: [[0, 0], [100, 100], [200, -50]]
});

Triangle 三角形

Triangle 继承自 Polygon,用于绘制三角形,其大部分属性与 Polygon 一致。在 Polygon 的基础上,Triangle 需要设置“两边的长度”和“两边的夹角”即可完成绘制。

| 属性 | 说明 | 默认值 | | :---: | :------: | :--------: | | sides | 两边边长 | [10, 10] | | angle | 两边夹角 | 60 |

示例:

triangle

const triangle = new Triangle();
triangle.attr({
  color: 'red',
  sides: [80, 80],
  angle: '60',
  fillColor: 'yellow'
});

Rect 正方形

Rect 继承自 Polygon,用于绘制矩阵。在 Polygon 的基础上,Rect 需要额外设置“两边的长度”,如果想要绘制平行四边形,可以改变angle属性的数值即可。

| 属性 | 说明 | 默认值 | | :---: | :------: | :--------: | | sides | 两边边长 | [10, 10] | | angle | 两边夹角 | 90 |

示例:

rectangle

const rect = new Rect();
rect.attr({
  color: 'red',
  sides: [60, 80],
  angle: 60,
  fillColor: 'yellow'
});

Star 星形

Star 继承自 Polygon 用于绘制规则的多角形。Star 将多角形的绘制分为内接圆外接圆之上点的连接,默认内接圆的半径为0.4 * 外接圆的半径,也可手动设置。

| 属性 | 说明 | 默认值 | | :---------: | :--------: | :------------: | | radius | 外接圆半径 | 0 | | innerRadius | 内切圆半径 | 0.4 * radius | | angle | 角的数量 | 5 |

示例:

star

const star = new Star();
star.attr({
  radius: 40,
  innerRadius: 30,
  color: 'red',
  angles: 5,
  fillColor: 'yellow'
});

EllipseSector 椭圆扇形

EllipseSector 继承自 Shape,用于绘制椭圆扇形。

| 属性 | 说明 | 默认值 | | :--------: | :--------------: | :----------------: | | radiusX | 短半径 | 10 | | radiusY | 长半径 | 20 | | startAngle | 起始角度 | 0 | | endAngle | 终止角度 | 360 | | color | 描边线条颜色 | rgba(0, 0, 0, 1) | | fillColor | 填充颜色 | rgba(0, 0, 0, 1) | | lineWidth | 线条宽度 | 1 | | lineCap | 线条末端绘制样式 | round | | lineJoin | 两线条交汇处样式 | round |

示例:

ellipseSector

const ellipseSector = new EllipseSector();
ellipseSector.attr({
  radiusX: 30,
  radiusY: 80,
  startAngle: 0,
  endAngle: Math.PI * 1.3,
  lineWidth: 1,
  color: 'red'
});

Ellipse 椭圆形

Ellipse 继承自 EllipseSector,用于绘制椭圆。 与EllipseSector相比, Ellipse 不需指定startAngleendAngle

示例:

ellipse

const ellipse = new Ellipse();
ellipse.attr({
  radiusX: 30,
  radiusY: 80,
  fillColor: 'red',
  lineWidth: 5
});
EllipseArc 椭圆弧

EllipseArc 继承自 Ellipse,用于绘制椭圆弧线(与 Arc 的区别)。 EllipseArc 放开了 startAngleendAngle 的限制。

示例:

ellipseArc

const ellipseArc = new EllipseArc();
ellipseArc.attr({
  radiusX: 30,
  endAngle: 120,
  radiusY: 80,
  fillColor: 'red',
  lineWidth: 5
});
Circle 圆

Circle 继承自 Ellipse。与Ellipse相比, Circle 只需指定一个半径,即radius,而无需指定radiusXradiusY

| 属性 | 说明 | 默认值 | | :----: | :--: | :----: | | radius | 半径 | 10 |

示例:

circle

const circle = new Circle();
circle.attr({
  radius: 30,
  lineWidth: 5,
  color: 'red'
});

Sector 圆扇形

Sector 继承自 EllipseSector,用于绘制圆扇形。与EllipseSector相比, Sector 只需指定一个半径,即radius,而无需指定radiusXradiusY

| 属性 | 说明 | 默认值 | | :----: | :--: | :----: | | radius | 半径 | 10 |

示例:

sector

const sector = new Sector();
sector.attr({
  startAngle: 0,
  endAngle: Math.PI * 0.7,
  radius: 50,
  lineWidth: 5,
  color: 'red'
});

Ring 圆环

Ring 继承自 Shape,用于绘制圆环。

| 属性 | 说明 | 默认值 | | :---------: | :----------: | :----------------: | | innerRadius | 内圆半径 | 10 | | outerRadius | 外圆半径 | 20 | | startAngle | 起始角度 | 0 | | endAngle | 终止角度 | 360 | | color | 描边线条颜色 | rgba(0, 0, 0, 1) | | fillColor | 填充颜色 | rgba(0, 0, 0, 1) | | lineWidth | 线条宽度 | 1 |

示例:

ring

ring.attr({
  innerRadius: 15,
  outerRadius: 50,
  fillColor: {
    vector: [0, 0, 150, 150],
    colors: [{offset: 0, color: 'red'}, {offset: 1, color: 'green'}]
  },
  lineWidth: 4,
  startAngle: Math.PI * 0.5,
  endAngle: Math.PI * 1.6
});