hand-line-draw

Purpose

Animate the drawing-on of a specific SVG path (motion trail, arrow callout, directional underline). The path is pre-defined; this primitive controls the stroke-on animation.

Distinct from squiggle-draw-on:

• squiggle-draw-on generates the path on-the-fly with jitter.
• hand-line-draw follows a pre-computed path (often the path traced by a traveling element).

Params

{
  "path_d": "M 60 300 Q 200 200 400 280 T 800 320",   // SVG path d-attr
  "stroke_color": "#0F0F0F",
  "stroke_width_px": 5,
  "stroke_linecap": "round",
  "stroke_linejoin": "round",