Priva28

#include <metal_stdlib>
#include <SwiftUI/SwiftUI.h>
using namespace metal;

float2 distort(float2 uv, float strength) {
    float2 dist = 0.5 - uv;
    uv.x = (uv.x - dist.y * dist.y * dist.x * strength);
    uv.y = (uv.y - dist.x * dist.x * dist.y * strength);
    return uv;
}

adamcichy

extension CGImage {
    var isDark: Bool {
        get {
            guard let imageData = self.dataProvider?.data else { return false }
            guard let ptr = CFDataGetBytePtr(imageData) else { return false }
            let length = CFDataGetLength(imageData)
            let threshold = Int(Double(self.width * self.height) * 0.45)
            var darkPixels = 0
            for i in stride(from: 0, to: length, by: 4) {
                let r = ptr[i]

nrrrdcore

.bended-shadow {
  position: relative; 
  width: 500px; 
  margin: 200px auto;
}

.bended-shadow::before, .bended-shadow::after {
  content: '';
  position: absolute;
  width: 60%;