ArrowParticle constructor
Creates an arrow particle painter.
Parameters:
length: The length of the arrow in pixels. Default: 10.0width: The width of the arrow head in pixels. Default: 6.0color: Optional color override. If null, uses connection color.
Implementation
const ArrowParticle({this.length = 10.0, this.width = 6.0, this.color})
: assert(length > 0, 'Length must be positive'),
assert(width > 0, 'Width must be positive');