56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
function randomFloat(min, max) {
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return Math.random() * (max - min) + min;
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}
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function randomIntFrom0(max) {
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return Math.floor(Math.random() * max)
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}
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function randomInt(min, max) {
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return Math.floor(Math.random() * (max - min) + min)
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}
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function clampNearest(n, mul) {
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if(n > 0)
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return Math.ceil(n / mul) * mul;
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else if( n < 0)
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return Math.floor(n / mul) * mul;
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else
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return 0;
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}
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function showGrid() {
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let canvasEl = document.createElement("canvas")
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canvasEl.width = window.innerWidth
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canvasEl.height = window.innerHeight
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canvasEl.style.position = "absolute"
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canvasEl.style.top = "0%"
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canvasEl.style.left = "0%"
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canvasEl.style.pointerEvents = "none"
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let ctx = canvasEl.getContext("2d")
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document.body.appendChild(canvasEl)
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let repeatCountX = window.innerWidth / pxDensity
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let repeatCountY = window.innerHeight / pxDensity
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ctx.strokeStyle = "#ff0000"
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ctx.beginPath()
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for (x = 0; x < repeatCountX; x++) {
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ctx.moveTo(x * pxDensity, 0)
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ctx.lineTo(x * pxDensity, window.innerHeight)
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}
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for (y = 0; y < repeatCountY; y++) {
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ctx.moveTo(0, y * pxDensity)
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ctx.lineTo(window.innerWidth, y * pxDensity)
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}
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ctx.stroke()
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} |