forked from lxm_flutter/FlutterUnit
99 lines
2.3 KiB
Dart
99 lines
2.3 KiB
Dart
import 'package:flutter/material.dart';
|
|
import 'matrix4_shower.dart';
|
|
|
|
/// create by 张风捷特烈 on 2020/4/30
|
|
/// contact me by email 1981462002@qq.com
|
|
/// 说明:
|
|
|
|
// {
|
|
// "widgetId": 78,
|
|
// "name": '缩放变换diagonal3Values',
|
|
// "priority": 3,
|
|
// "subtitle":
|
|
// "缩放x由R0C0数控制,入参为数值,表示缩放分率\n"
|
|
// "缩放y由R1C2数控制,入参为数值,表示缩放分率\n"
|
|
// "缩放z由R2C2数控制,入参为数值,表示缩放分率",
|
|
// }
|
|
class ScaleTransform extends StatefulWidget {
|
|
@override
|
|
_ScaleTransformState createState() => _ScaleTransformState();
|
|
}
|
|
|
|
class _ScaleTransformState extends State<ScaleTransform> {
|
|
Matrix4 _m4;
|
|
double _x = 1.0;
|
|
double _y = 1.0;
|
|
double _z = 1.0;
|
|
|
|
@override
|
|
void initState() {
|
|
_m4 = Matrix4.identity();
|
|
super.initState();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Column(
|
|
children: <Widget>[
|
|
Row(
|
|
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
|
|
children: <Widget>[_buildTransform(), Matrix4Shower(_m4)],
|
|
),
|
|
_buildSliders()
|
|
],
|
|
);
|
|
}
|
|
|
|
Widget _buildTransform() {
|
|
_m4 = Matrix4.diagonal3Values(_x, _y, _z);
|
|
return Transform(
|
|
transform: _m4,
|
|
child: Container(
|
|
color: Colors.cyanAccent,
|
|
width: 100,
|
|
height: 100,
|
|
child: Image.asset(
|
|
'assets/images/wy_300x200.webp',
|
|
fit: BoxFit.cover,
|
|
)),
|
|
);
|
|
}
|
|
|
|
Widget _buildSliders() => Column(
|
|
children: <Widget>[
|
|
Slider(
|
|
min: -2,
|
|
max: 2,
|
|
value: _x,
|
|
divisions: 360,
|
|
label: 'x:${_x.toStringAsFixed(1)}',
|
|
onChanged: (v) {
|
|
setState(() {
|
|
_x = v;
|
|
});
|
|
}),
|
|
Slider(
|
|
min: -2,
|
|
max: 2,
|
|
value: _y,
|
|
divisions: 360,
|
|
label: 'y:${_y.toStringAsFixed(1)}',
|
|
onChanged: (v) {
|
|
setState(() {
|
|
_y = v;
|
|
});
|
|
}),
|
|
Slider(
|
|
min: -2,
|
|
max: 2,
|
|
value: _z,
|
|
divisions: 360,
|
|
label: 'z:${_z.toStringAsFixed(1)}',
|
|
onChanged: (v) {
|
|
setState(() {
|
|
_z = v;
|
|
});
|
|
})
|
|
],
|
|
);
|
|
} |