discontinuedPackage jet_cad_floor_plan has been discontinued and replaced by jet_cad_2d_plan.

paintOverlay method

  1. @override
void paintOverlay(
  1. Canvas canvas,
  2. ViewportTransform camera,
  3. Size viewport,
  4. PaperPalette paper,
)

The snap marker, then a ring at each attaching placed or hovered point (decided on the pointer move; nothing is searched here).

Implementation

@override
void paintOverlay(Canvas canvas, ViewportTransform camera, Size viewport,
    PaperPalette paper) {
  super.paintOverlay(canvas, camera, viewport, paper);
  _ringPaint.color = paper.preview;
  final m = camera.worldToScreenMatrix;
  void ring(Vector2 p) => canvas.drawCircle(
      Offset(m.a * p.x + m.c * p.y + m.e, m.b * p.x + m.d * p.y + m.f),
      kAttachRingPixels,
      _ringPaint);
  if (_ring0 && points.isNotEmpty) ring(points[0]);
  if (_ring1 && points.length > 1) ring(points[1]);
  if (_ringHover && hoverVisible) ring(hoverPoint);
}