131 lines
9.9 KiB
Dart
131 lines
9.9 KiB
Dart
import 'dart:math' as dart_math;
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import 'package:flutter/material.dart';
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import 'package:flutter_svg/flutter_svg.dart';
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String _makeSvg(String d, String fill, String transform) =>
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'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 439 419">'
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'<path d="$d" fill="$fill" transform="$transform"/>'
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'</svg>';
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final List<String> _svgStrings = [
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// path1 — pink/red
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_makeSvg(
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'm 178.04447,135.21247 c 0.002,9.09742 0.17625,49.4843 0.17178,58.58172 -0.005,10.44131 -0.004,20.8826 0.002,31.32392 0.005,9.06176 0.005,18.12351 0.003,27.18527 -0.002,5.37036 -0.002,10.7407 0.002,16.11105 0.0204,38.14483 0.0204,38.14483 -0.54694,53.99548 l -0.10305,3.01772 c -0.80885,18.6575 -7.8096,35.94603 -20.4863,49.70518 l -2.15235,2.35938 c -12.39998,12.98838 -30.69723,23.86033 -49.02594,24.74586 -2.64076,0.0575 -5.28022,0.0839 -7.921566,0.10008 l -3.044189,0.03 c -3.328264,0.0316 -6.656542,0.0564 -9.984864,0.0811 -2.346596,0.0206 -4.693189,0.0416 -7.039779,0.063 -4.940416,0.044 -9.880843,0.0849 -14.821305,0.12331 -6.216775,0.0484 -12.433489,0.10212 -18.650202,0.158 -6.037887,0.054 -17.776846,0.19345 -40.2740759,0.28883 L 57.571753,137.10368 c 14.685204,-1.44088 35.90966,0.0974 45.537897,0.12284 41.79401,0.11064 74.93393,-6.04872 74.93482,-2.01405 z',
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'#d62f60',
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'translate(249.91406,6.8671875)',
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),
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// path2 — teal
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_makeSvg(
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'm 64.688834,203.13197 c 0.0035,6.66536 0.0067,13.33073 0.0093,19.99609 l 9.86e-4,2.48865 c 0.005,13.72121 -0.0058,27.44236 -0.02756,41.16355 -0.01265,8.44313 -0.01133,16.88604 0.0085,25.32916 0.01266,5.78741 0.0111,11.57471 -0.0014,17.36211 -0.0067,3.33159 -0.0047,6.66256 0.01058,9.99416 0.111194,25.65838 0.111194,25.65838 -4.500365,37.04128 l -0.849251,2.18899 c -7.771476,18.55174 -21.788527,30.7335 -39.685905,38.97898 -3.37688,1.34444 -5.301227,2.48389 -8.978708,2.48389 l -3.2442484,1.47057 c -4.8987376,0.0599 -14.0045433,0.089 -15.4540455,0.10655 -25.7222011,0.30356 -49.7229121,-5.03616 -68.8916011,-23.19214 -3.286346,-3.24956 -6.197141,-6.66938 -8.810303,-10.47827 -1.170385,-1.6798 -3.844026,-5.57044 -5.590218,-8.45711 -0.851523,-1.40767 -3.595298,-4.4516 -7.983006,-16.21404 -0.853709,-1.50963 -2.403339,-12.94213 -2.403339,-12.94213 -0.0915,-1.48718 -0.23669,-2.92345 -0.23801,-4.41344 l -0.01,-2.78866 0.005,-3.06828 -0.007,-3.25582 c -0.006,-3.61823 -0.006,-7.23642 -0.005,-10.85466 -0.003,-2.58667 -0.006,-5.17335 -0.0102,-7.76002 -0.008,-6.30723 -0.0111,-12.61445 -0.0116,-18.92169 -4.7e-4,-5.12481 -0.003,-10.24962 -0.006,-15.37442 -0.009,-14.52085 -0.0134,-29.0417 -0.0127,-43.56255 l 1.3e-4,-2.37302 1.2e-4,-2.3759 c 4.1e-4,-12.71422 -0.009,-25.42841 -0.0233,-38.14262 -0.0143,-13.04611 -0.0213,-26.0922 -0.0204,-39.13831 3.3e-4,-7.32798 -0.002,-14.65593 -0.0132,-21.9839 -0.01,-6.88802 -0.01,-13.77597 -0.002,-20.663998 10e-4,-2.533683 1.124,-6.567371 1.118,-9.101047 -0.008,-3.44738 -1.128,-5.394528 82.246422,49.699935 83.374422,55.09446 83.377322,60.92629 83.380322,66.75811 z',
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'#51cdc8',
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'translate(112.81113,8.4930303)',
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),
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// path3 — yellow
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_makeSvg(
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'm 0,0 c 2.3047995,-6.7559e-4 4.6095989,-0.00164773 6.9143982,-0.00289917 4.8125578,-0.00146675 9.6250968,6.4331e-4 14.4376528,0.00534058 6.108101,0.00567724 12.216159,0.00242443 18.324259,-0.00357247 4.756666,-0.00364996 9.513323,-0.00244655 14.269991,1.2779e-4 2.249005,6.5808e-4 4.498012,-1.1905e-4 6.747016,-0.00247955 10.980782,-0.00899429 21.945816,0.06768592 32.917523,0.54693985 l 2.536386,0.10305596 C 119.97909,1.8334817 140.8053,14.193522 157.08594,31.132812 c 14.55199,16.47268 20.55085,36.163532 20.75,57.8125 0.0272,1.535344 0.0557,3.070663 0.0855,4.605958 0.0684,3.811023 0.11277,7.62181 0.14563,11.43329 0.018,2.0392 0.0412,21.15431 0.0616,30.38266 0.0376,3.46864 -119.042723,1.76559 -119.042723,1.76559 l -20.85965,1.44008 -111.140349,85.55992 c -0.161213,-39.22828 -0.161213,-39.22828 -0.195313,-55.73828 -0.02368,-11.37426 -0.05144,-22.7484 -0.106445,-34.12256 -0.04005,-8.28583 -0.06572,-16.57157 -0.0746,-24.8575 -0.0052,-4.3814 -0.01724,-8.76252 -0.04657,-13.143825 -0.02746,-4.136862 -0.03546,-8.273336 -0.02951,-12.41028 -0.0011,-1.50588 -0.0089,-3.011774 -0.02439,-4.517574 -0.131739,-13.445652 1.806738,-26.659985 8.289322,-38.647479 l 1.049072,-2.008056 c 2.851223,-5.317287 6.068313,-10.084275 10.138428,-14.554444 L -51.898437,21.875 C -43.655062,13.127533 -37.90534,5.8098811 -26.601562,1.8203125 l -12.3125,0.3125 v -1 C -25.942811,-0.00501656 -13.012554,-0.01357216 0,0 Z',
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'#fec728',
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'translate(249.91406,6.8671875)',
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),
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// path4 — dark blue
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_makeSvg(
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'M 122.4545,-1.5555303 C 104.75322,5.7344897 77.764999,26.892615 70.396697,44.304966 65.927561,56.152831 64.595666,67.366945 64.64297,79.919079 c -0.0088,1.568853 -0.01926,3.137697 -0.03133,4.706528 -0.02754,4.203537 -0.03127,8.406777 -0.03028,12.610391 -0.0032,4.413592 -0.02883,8.827052 -0.05198,13.240572 -0.04035,8.33285 -0.06085,16.66561 -0.07397,24.99854 -0.01594,9.49723 -0.05439,18.99434 -0.09459,28.4915 -0.08212,19.51341 -0.136384,39.02681 -0.171948,58.54036 -3.137967,0.048 -6.275837,0.0763 -9.414062,0.10156 l -2.652588,0.0413 C 23.81406,222.81977 1.5565346,207.45478 -18.375829,188.75648 l -2.718735,-2.53775 c -8.235245,-7.71396 -16.371582,-15.53064 -24.472001,-23.38588 -5.420898,-5.25288 -10.871421,-10.46504 -16.411803,-15.59199 -41.322082,-38.29606 -41.811362,-38.47284 -39.697042,-61.82222 2.114319,-23.349383 3.306846,-25.445419 3.989278,-27.72417 6.748595,-20.960043 21.800751,-37.772405 41,-48.4375003 18.641419,-9.40752742 36.480818,-9.88154862 87.01386,-9.85750697 50.533043,0.0240417 73.811792,-1.09807633 92.064262,-0.98624303',
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'#264863',
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'translate(112.81113,8.4930303)',
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),
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// path5 — purple
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_makeSvg(
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'm 0,0 131.25,-0.25 v 63.875 l 0.11035,19.705566 c 0.0181,7.998291 0.0181,7.998291 0.0214,11.753754 0.006,2.598872 0.0186,5.19694 0.0405,7.79565 0.033,3.95755 0.0333,7.91478 0.0318,11.87247 l 0.0436,3.45275 c -0.0875,17.24733 -6.73078,32.78677 -18.61099,45.21278 C 106.22208,169.37917 98.630621,174.4762 90,177 l -11.397775,1.80377 -1.45256,0.16395 c -7.104685,-0.0441 -3.43355,-0.0556 -10.538337,-0.0776 -2.653987,-0.0101 -5.307964,-0.0237 -7.961914,-0.041 -3.807645,-0.0242 -7.615144,-0.0356 -11.422852,-0.0444 l -3.614349,-0.0313 -3.336334,-4.6e-4 -2.947357,-0.0135 c -2.521553,0.0131 41.626196,-2.01422 39.819227,0.21323 L 33,179 H 30.1875 24 c -1.532555,0.0113 -3.065107,0.0231 -4.597656,0.0352 -1.821614,0.009 -3.643229,0.0184 -5.464844,0.0273 l -2.798828,0.0254 -2.6738282,0.01 -2.4494629,0.0159 C 4,179 5.0139855,178.84803 4.0508683,177.7768 l 1.9580347,1.35049 -19.547353,-0.15833 -0.795115,0.0476 L -16,179 l -3.272949,0.0317 c -3.999316,0.0361 -7.998616,0.0591 -11.998047,0.0781 -1.732447,0.0101 -3.464876,0.0237 -5.197266,0.041 -2.487184,0.0242 -4.974145,0.0356 -7.461425,0.0444 l -2.35495,0.0313 c -1.906618,4e-4 -13.996389,0.0497 -15.899078,-0.0727 l 18.898307,-4.96534 C -32.858078,170.63158 -17.423649,159.0936 -8,141 c 5.0244847,-11.01947 7.29498468,-20.88967 7.31884766,-32.92383 l 0.0307674,-3.60735 c 0.0305076,-3.83335 0.0477557,-7.666634 0.0644474,-11.50007 0.0169446,-2.374681 0.0347624,-4.749356 0.0534668,-7.124023 C -0.4694063,77.063221 -0.4232179,68.2816 -0.375,59.5 Z',
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'#773aaa',
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'translate(177,231)',
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),
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// path6 — orange
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_makeSvg(
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'm 130.75,72.125 c 0,0 -130.9459176,38.46063 -130.5354588,-0.05093 L 130.75,72.125 l 0.5,86.75 L 0,159 0.2145412,72.074065',
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'#ef7a34',
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'translate(177,72)',
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),
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];
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// ── LoaderWaveFloat ─────────────────────────────────────────────────────────
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// Wave opacity sweeping through pieces + slow rotation + vertical float.
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class LoaderWaveFloat extends StatefulWidget {
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final double size;
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const LoaderWaveFloat({Key? key, required this.size}) : super(key: key);
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@override
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State<LoaderWaveFloat> createState() => _LoaderWaveFloatState();
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}
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class _LoaderWaveFloatState extends State<LoaderWaveFloat>
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with TickerProviderStateMixin {
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late final AnimationController _wave;
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late final AnimationController _rotate;
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late final AnimationController _float;
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late final Animation<double> _floatAnim;
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static const _opacityMin = 0.82;
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static const _opacityMax = 0.97;
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static const List<double> _phases = [0.0, 1 / 6, 2 / 6, 3 / 6, 4 / 6, 5 / 6];
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@override
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void initState() {
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super.initState();
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_wave = AnimationController(vsync: this, duration: const Duration(milliseconds: 4000))
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..repeat();
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_rotate = AnimationController(vsync: this, duration: const Duration(milliseconds: 6000))
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..repeat();
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_float = AnimationController(vsync: this, duration: const Duration(milliseconds: 1800))
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..repeat(reverse: true);
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_floatAnim = Tween<double>(begin: -4.0, end: 4.0)
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.animate(CurvedAnimation(parent: _float, curve: Curves.easeInOut));
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}
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@override
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void dispose() {
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_wave.dispose();
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_rotate.dispose();
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_float.dispose();
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super.dispose();
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}
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double _opacity(int i) {
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final t = _wave.value;
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final phase = _phases[i];
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final v = 0.5 - 0.5 * dart_math.cos(2 * dart_math.pi * ((t - phase) % 1.0));
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return _opacityMin + (_opacityMax - _opacityMin) * v;
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}
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@override
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Widget build(BuildContext context) {
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return AnimatedBuilder(
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animation: Listenable.merge([_wave, _rotate, _float]),
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builder: (_, __) {
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return Transform.translate(
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offset: Offset(0, _floatAnim.value),
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child: Transform.rotate(
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angle: _rotate.value * 2 * dart_math.pi,
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child: SizedBox(
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width: widget.size,
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height: widget.size,
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child: Stack(
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children: List.generate(
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6,
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(i) => Opacity(
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opacity: _opacity(i),
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child: SvgPicture.string(
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_svgStrings[i],
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width: widget.size,
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height: widget.size,
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),
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),
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),
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),
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),
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),
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);
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},
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);
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}
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}
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