konva

• konvajs/konva
  • MIT, JS+TS
  • Canvas 2D
  • 级联关系 Stage - Layer - Group - Shape
• Shape
  • Rect, Circle, Ellipse
  • Line, Polygon, Spline, Blob
  • Sprite
  • Image, Text, TextPath, Star, Ring, Arc, Label, SVG Path, RegularPolygon, Arrow
• offset 是元素变化中心，而不是位置
• 参考
  • All Konva performance tips list