forked from lxm_flutter/FlutterUnit
97 lines
2.3 KiB
Dart
97 lines
2.3 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020/4/30
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/// contact me by email 1981462002@qq.com
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/// 说明:
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class CustomTransform extends StatefulWidget {
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@override
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_CustomTransformState createState() => _CustomTransformState();
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}
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class _CustomTransformState extends State<CustomTransform> {
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var angle = 0.0;
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var m = [
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1.0,
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0.0,
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0.0,
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0.0,
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0.0,
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1.0,
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0.0,
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0.0,
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0.0,
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0.1,
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0.0,
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0.0,
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0.0,
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0.0,
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0.0,
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1.0,
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];
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@override
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Widget build(BuildContext context) {
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var transform = Transform(
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transform: Matrix4(m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8],
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m[9], m[10], m[11], m[12], m[13], m[14], m[15]),
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child: Container(
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alignment: Alignment.center,
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color: Colors.cyanAccent,
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width: 100,
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height: 100,
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child: Image.asset(
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'assets/images/wy_300x200.webp',
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fit: BoxFit.cover,
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)),
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);
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return Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: <Widget>[
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Container(
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alignment: Alignment.topLeft,
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color: Colors.grey.withAlpha(22),
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width: 200,
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height: 150,
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child: transform,
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),
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Text(
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'${m[0]},${m[1]},${m[2]},${m[3]},\n'
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'${m[4]},${m[5]},${m[6]},${m[7]},\n'
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'${m[8]},${m[9]},${m[10]},${m[11]},\n'
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'${m[12]},${m[13]},${m[14]},${m[15]}\n',
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style: TextStyle(fontSize: 20),
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)
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],
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),
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Container(
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width: MediaQuery.of(context).size.width,
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height: 200,
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child: _buildSliders())
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],
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);
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}
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Widget _buildSliders() => GridView.count(
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crossAxisCount: 2,
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childAspectRatio: 8,
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children: m
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.asMap()
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.keys
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.map((i) => Slider(
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value: m[i],
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max: 0.01,
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min: 0.0,
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divisions: 10,
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onChanged: (v) {
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setState(() {
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m[i] = v;
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});
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}))
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.toList());
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}
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