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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | +<head> |
| 4 | + <meta charset="UTF-8"> |
| 5 | + <title>Mouse Shadow</title> |
| 6 | +</head> |
| 7 | +<body> |
| 8 | + |
| 9 | + <div class="hero"> |
| 10 | + <h1 contenteditable>🔥WOAH!</h1> |
| 11 | + </div> |
| 12 | + |
| 13 | + <style> |
| 14 | + |
| 15 | + :root { |
| 16 | + --shadowOneX: 10px; |
| 17 | + --shadowOneY: 10px; |
| 18 | + --shadowTwoX: -10px; |
| 19 | + --shadowTwoY: 10px; |
| 20 | + --shadowThreeX: 10px; |
| 21 | + --shadowThreeY: -10px; |
| 22 | + --shadowFourX: -10px; |
| 23 | + --shadowFourY: -10px; |
| 24 | + } |
| 25 | + |
| 26 | + html { |
| 27 | + color:black; |
| 28 | + font-family: sans-serif; |
| 29 | + } |
| 30 | + |
| 31 | + .hero { |
| 32 | + min-height: 100vh; |
| 33 | + display:flex; |
| 34 | + justify-content: center; |
| 35 | + align-items: center; |
| 36 | + color:black; |
| 37 | + } |
| 38 | + |
| 39 | + h1 { |
| 40 | + text-shadow: var(--shadowOneX) var(--shadowOneY) 0 rgba(0,0,0,1), var(--shadowTwoX) var(--shadowTwoY) 0 blue, var(--shadowThreeX) var(--shadowThreeY) 0 green, var(--shadowFourX) var(--shadowFourY) 0 orange; |
| 41 | + font-size: 100px; |
| 42 | + } |
| 43 | + </style> |
| 44 | + |
| 45 | +<script> |
| 46 | + const hero = document.querySelector('.hero'); |
| 47 | + |
| 48 | + function update(event) { |
| 49 | + const maxX = window.screen.availWidth; |
| 50 | + const maxY = window.screen.availHeight; |
| 51 | + const mouseX = event.screenX; |
| 52 | + const center = {x: maxX / 2, y: maxY / 2}; |
| 53 | + const mouseY = event.screenY; |
| 54 | + const constraint = 200 |
| 55 | + const shadowX = ((mouseX - center.x)/ maxX) * constraint; |
| 56 | + const shadowY = ((mouseY - center.y) / maxY ) * constraint; |
| 57 | + document.documentElement.style.setProperty( |
| 58 | + '--shadowOneX', `${shadowX}px` |
| 59 | + ); |
| 60 | + document.documentElement.style.setProperty( |
| 61 | + '--shadowOneY', `${shadowY}px` |
| 62 | + ); |
| 63 | + document.documentElement.style.setProperty( |
| 64 | + '--shadowTwoX', `${-shadowX}px` |
| 65 | + ); |
| 66 | + document.documentElement.style.setProperty( |
| 67 | + '--shadowTwoY', `${shadowY}px` |
| 68 | + ); |
| 69 | + document.documentElement.style.setProperty( |
| 70 | + '--shadowThreeX', `${shadowX}px` |
| 71 | + ); |
| 72 | + document.documentElement.style.setProperty( |
| 73 | + '--shadowThreeY', `${-shadowY}px` |
| 74 | + ); |
| 75 | + document.documentElement.style.setProperty( |
| 76 | + '--shadowFourX', `${-shadowX}px` |
| 77 | + ); |
| 78 | + document.documentElement.style.setProperty( |
| 79 | + '--shadowFourY', `${-shadowY}px` |
| 80 | + ); |
| 81 | + } |
| 82 | + |
| 83 | + hero.addEventListener('mousemove', update); |
| 84 | +</script> |
| 85 | +</body> |
| 86 | +</html> |
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