jerrypm

import UIKit
import WebKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Configure the web view for JavaScript injection
        configureWebView()

jerrypm

//
//  MakeTransparentHoleOnOverlayView.swift
//
//  Created by James Laurenstin on 2015-04-10.
//  Copyright (c) 2015 Aldo Group Inc. All rights reserved.
//

import UIKit

class MakeTransparentHoleOnOverlayView: UIView {

jerrypm

<h1>vertices</h1>
<input id="SLID" type="range" min="1" max="21" value="10"><input id="TEXT">
<canvas id="CNVS" width="1024" height="1024"></canvas><hr/>
<script>
const vs=`attribute vec4 a;uniform float vt;
void main(){
	gl_PointSize=1.0;
	float th=vt*a.z/2.0;
	gl_Position=a;
	gl_Position.xy*=mat2(cos(th),-sin(th),sin(th),cos(th));