forked from lxm_flutter/FlutterUnit
102 lines
2.4 KiB
Dart
102 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'matrix4_shower.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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// {
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// "widgetId": 78,
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// "name": '平移变换translationValues',
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// "priority": 2,
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// "subtitle": "平移x由R0C3数控制,入参为数值,表示平移长度\n"
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// "平移y由R1C3数控制,入参为数值,表示平移长度\n"
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// "平移z由R2C3数控制,入参为数值,表示平移长度",
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// }
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class TranslationTransform extends StatefulWidget {
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const TranslationTransform({Key? key}) : super(key: key);
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@override
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_TranslationTransformState createState() => _TranslationTransformState();
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}
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class _TranslationTransformState extends State<TranslationTransform> {
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late Matrix4 _m4;
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double _x = 0;
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double _y = 0;
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double _z = 0;
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@override
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void initState() {
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_m4 = Matrix4.identity();
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super.initState();
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}
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@override
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Widget build(BuildContext context) {
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return Column(
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children: <Widget>[
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: <Widget>[_buildTransform(), Matrix4Shower(_m4)],
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),
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_buildSliders()
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],
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);
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}
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Widget _buildTransform() {
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_m4 = Matrix4.translationValues(_x, _y, _z);
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return Transform(
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transform: _m4,
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child: Container(
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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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}
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Widget _buildSliders() => Column(
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children: <Widget>[
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Slider(
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min: -100,
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max: 100,
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value: _x,
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divisions: 360,
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label: 'x:${_x.toStringAsFixed(1)}',
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onChanged: (v) {
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setState(() {
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_x = v;
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});
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}),
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Slider(
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min: -100,
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max: 100,
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value: _y,
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divisions: 360,
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label: 'y:${_y.toStringAsFixed(1)}',
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onChanged: (v) {
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setState(() {
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_y = v;
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});
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}),
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Slider(
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min: -100,
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max: 100,
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value: _z,
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divisions: 360,
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label: 'z:${_z.toStringAsFixed(1)}',
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onChanged: (v) {
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setState(() {
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_z = v;
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});
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})
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],
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);
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}
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