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revision.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.contenedorGrid{
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 20px;
height: 90vh;
}
.contenedor1{
border: 1px solid red;
height: 100%;
}
.contenedor2{
border: 1px solid blue;
height: 100%
}
</style>
</head>
<body>
<canvas width="600" height="400"> </canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "lightgrey";
pincel.fillRect(0,0,600,400);
var radio = 10;
function disenharCircunferencia(x,y,radio,color){
pincel.fillStyle = "red";
pincel.beginPath();
pincel.arc(x,y,radio, 2 * Math.PI);
pincel.fill();
}
function limpiarPantalla(){
pincel.clearRect(0,0,600,400);
}
var x = 0;
function actualizarPantalla(){
limpiarPantalla();
disenharCircunferencia(x,20,10);
x++;
}
function disenharObjectivo(x,y){
disenharCircunferencia(x,y,radio + 20,"red");
disenharCircunferencia (x,y,radio + 10,"white");
disenharCircunferencia(x,y,radio,"red");
}
function sortearPosicion(maximo){
return Math.floor(Math.random() * maximo);
}
var xAleatorio = sortearPosicion(600);
var yAleatorio = sortearPosicion(400);
disenharObjectivo(xAleatorio,xAleatorio);
setInterval(actualizarPantalla,1000);
</script>
</body>
</html>