ponnamkarthik

class ShaderHomePage extends StatefulWidget {
  const ShaderHomePage({super.key});

  @override
  State<ShaderHomePage> createState() => _ShaderHomePageState();
}

class _ShaderHomePageState extends State<ShaderHomePage> {
  late Timer timer;
  double delta = 0;

ponnamkarthik

class ShaderPainter extends CustomPainter {
  final FragmentShader shader;
  final double time;

  ShaderPainter(FragmentShader fragmentShader, this.time)
      : shader = fragmentShader;

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint();

ponnamkarthik

#include <flutter/runtime_effect.glsl>

uniform vec2 uSize;
uniform float iTime;
vec2 iResolution;
out vec4 fragColor;

#define PI 3.1415926535897932384626433832795

void main(void) {

ponnamkarthik

#include <flutter/runtime_effect.glsl>

uniform vec2 uSize;
uniform float iTime;
vec2 iResolution;

out vec4 fragColor;

#define PI 3.1415926535897932384626433832795

ponnamkarthik

#define PI 3.1415926535897932384626433832795

void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
    vec2 center = fragCoord/iResolution.xy - vec2(0.5, 0.5);
    
    float dist = length(center);
    float p = (atan(center.y,center.x)) / (2.0 * PI);
    float numStripes = 12.0;
        

ponnamkarthik

class MyPainter extends CustomPainter {
  final Paint paint;

  MyPainter(this.paint);

  @override
  void paint(Canvas canvas, Size size) {
    canvas.drawRect(
      Rect.fromLTRB(0, 0, size.width, size.height),
      paint,

ponnamkarthik

CustomPaint(
  painter: MyPainter(paint),
  child: Container(),
);

ponnamkarthik

Paint paint = Paint()
  ..shader = Shader.linearGradient(
    colors: [Colors.red, Colors.blue],
    begin: Alignment.topLeft,
    end: Alignment.bottomRight,
  );

ponnamkarthik

var sharedItems : Array<NSObject> = Array()
          
sharedItems.append((message as NSObject?)!)

let activityViewController = UIActivityViewController(activityItems: sharedItems, applicationActivities: nil)

activityViewController.setValue("Share", forKeyPath: "subject");

DispatchQueue.main.async {
    UIApplication.topViewController()?.present(activityViewController, animated: true, completion: nil)

ponnamkarthik

return Scaffold(
  appBar: AppBar(
    title: Text(widget.title),
  ),
  body: CustomScrollView(
    slivers: [
      SliverList(delegate: SliverChildBuilderDelegate(
          (context, index) {
            return Text("hello user");
          },