radiofun

[[ stitchable ]] half4 distortionWithScale(float2 pos, SwiftUI::Layer l, float4 boundingRect, float2 dragp, float progress) {
    float2 delta = pos - dragp;
    float dist = length(delta);
    
    // Define the influence of the "force" from the drag point
    float radius = 155.0; // Radius of effect
    float strength = 0.8; // How much it pulls
    
    // Influence peaks at 0.5, is 0 at 0.3 and 1.0 - you can customize these values. 
    float progressinfluence = smoothstep(0.3, 0.5, progress) * (1.0 - smoothstep(0.5, 1.0, progress));

radiofun

import SwiftUI

struct DistortionSampleView: View {
    @State private var dragP : CGPoint = .init(x: -1000, y: -1000)
    
    var body: some View {
        ZStack {
          
            // Black Background - replace with image, gradient, whatever you like.         
            Color.black

radiofun

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

//Use DistortionSampleView.swift to try it out
//2026 Minsang Choi


[[ stitchable ]] half4 distortion(float2 pos, SwiftUI::Layer l, float4 boundingRect, float2 dragp) {
    float2 delta = pos - dragp;