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alex
2021-03-15 23:21:06 +02:00
parent a6f3d63d68
commit 8626e8c2c6
4 changed files with 27 additions and 22 deletions
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27
lib/src/bezier.dart
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@@ -64,7 +64,8 @@ class CubicBezier extends Bezier {
CubicBezier(this.p0, this.p1, this.p2, this.p3);
Offset point(double t) => Offset(
Offset point(double t) =>
Offset(
_cubicBezier(t, p0.dx, p1.dx, p2.dx, p3.dx),
_cubicBezier(t, p0.dy, p1.dy, p2.dy, p3.dy),
);
@@ -84,10 +85,11 @@ class PathBezier extends Bezier {
PathBezier(this.p0) : _p0 = p0;
static PathBezier roundedRect(RRect rrect) {
return PathBezier(Offset(rrect.left + rrect.tlRadiusX, rrect.top))
return PathBezier(Offset(rrect.left + rrect.width / 2, rrect.top))
..lineTo(Offset(rrect.right - rrect.trRadiusX, rrect.top))
..quadTo(
Offset(rrect.right, rrect.top), Offset(rrect.right, rrect.trRadiusY))
Offset(rrect.right, rrect.top),
Offset(rrect.right, rrect.top + rrect.trRadiusY))
..lineTo(Offset(rrect.right, rrect.bottom - rrect.brRadiusY))
..quadTo(Offset(rrect.right, rrect.bottom),
Offset(rrect.right - rrect.brRadiusX, rrect.bottom))
@@ -96,12 +98,13 @@ class PathBezier extends Bezier {
Offset(rrect.left, rrect.bottom - rrect.blRadiusY))
..lineTo(Offset(rrect.left, rrect.top + rrect.tlRadiusX))
..quadTo(Offset(rrect.left, rrect.top),
Offset(rrect.left + rrect.tlRadiusX, rrect.top));
Offset(rrect.left + rrect.tlRadiusX, rrect.top))
..lineTo(Offset(rrect.left + rrect.width / 2, rrect.top));
}
_add(Bezier bezier, Offset pn) {
_curves.add(bezier);
final bl = bezierLength(bezier);
_curves.add(bezier);
_lens.add(bl);
_length += bl;
_p0 = pn;
@@ -114,22 +117,30 @@ class PathBezier extends Bezier {
cubeTo(Offset p1, Offset p2, Offset p3) =>
_add(CubicBezier(_p0, p1, p2, p3), p3);
relativeLineTo(Offset p1) => lineTo(
relativeLineTo(Offset p1) =>
lineTo(
p1 + _p0,
);
relativeQuadTo(Offset p1, Offset p2) => quadTo(
relativeQuadTo(Offset p1, Offset p2) =>
quadTo(
p1 + p0,
p1 + p2 + p0,
);
relativeCubeTo(Offset p1, Offset p2, Offset p3) => cubeTo(
relativeCubeTo(Offset p1, Offset p2, Offset p3) =>
cubeTo(
p0 + p1,
p0 + p1 + p2,
p0 + p1 + p2 + p3,
);
Offset point(double t) {
if (t > 1) {
t = t - t.floor();
}
if (_length == 0) return p0;
var distance = _length * t;
var index = 0;