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👌 Use Offset type directly in JoystickAction.update calculations (#631)

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This commit is contained in:
Serge Matveenko
2021-01-18 03:37:46 +03:00
committed by GitHub
parent 33f61d2bab
commit a8ef5cadea
2 changed files with 4 additions and 7 deletions
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1
CHANGELOG.md
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@ -1,6 +1,7 @@
# CHANGELOG
## [next]
- Use `Offset` type directly in `JoystickAction.update` calculations
- Changed `parseAnchor` in `examples/widgets` to throw an exception instead of returning null when it cannot parse an anchor name
- Code improvements and preparing APIs to null-safety
- BaseComponent removes children marked as shouldRemove during update

10
lib/components/joystick/joystick_action.dart
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@ -136,15 +136,11 @@ class JoystickAction {
// Calculate the knob position
final double nextX = dist * cos(_radAngle);
final double nextY = dist * sin(_radAngle);
final Offset nextPoint = Offset(nextX, nextY);
final nextPoint = Offset(nextX, nextY);
if (_rectAction != null) {
final Offset diff = Offset(
_rectBackgroundDirection.center.dx + nextPoint.dx,
_rectBackgroundDirection.center.dy + nextPoint.dy,
) -
_rectAction.center;
final diff =
_rectBackgroundDirection.center + nextPoint - _rectAction.center;
_rectAction = _rectAction.shift(diff);
}