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@ -4,17 +4,35 @@ |
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<meta charset="UTF-8"> |
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<meta http-equiv="X-UA-Compatible" content="IE=edge"> |
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<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
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<title>vesmir</title> |
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<title>Vesmír</title> |
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<style> |
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section{ |
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height: 100vh; |
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} |
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#hvezdy{ |
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color: white; |
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} |
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.earth-fixed{ |
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position: fixed; |
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width: 200px; |
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opacity: 0; |
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} |
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#zjeveni{ |
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color: white; |
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} |
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#rotace{ |
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color: white; |
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} |
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</style> |
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</head> |
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<body> |
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<div id="earth"> |
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<img class="earth-fixed" src="img/img/e1.jpg" alt=""> |
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</div> |
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<section id="uvod"> |
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void |
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</section> |
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@ -22,33 +40,43 @@ |
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dark |
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</section> |
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<section id="hvezdy"> |
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hvezdy |
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hvězdy |
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</section> |
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<section id="zjeveni"> |
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zjeveni |
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</section> |
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<section id="rotace"> |
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rotace |
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</section> |
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<script> |
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function handler() { |
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function handler () { |
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let dark = document.querySelector('#dark'); |
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let dark_rect = dark.getBoundingClientRect(); |
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console.log(dark_rect.top); |
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console.log("dark: " + dark_rect.top); |
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let value = Math.ceil(255 * (dark_rect.top / dark_rect.height)); |
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if (value >= 0 && value <= 255) { |
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document.body.style.backgroundColor = "rgb(" + value + "," + value + "," + value + ")"; |
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} |
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let hvezdy = document.querySelector("#hvezdy"); |
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let hvezdy = document.querySelector('#hvezdy'); |
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let hvezdy_rect = hvezdy.getBoundingClientRect(); |
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console.log("hvezdy: " + (hvezdy_rect.height - hvezdy_rect.top)); |
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if (hvezdy_rect.height - hvezdy_rect.top > 0) { |
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let opacity = (hvezdy_rect.top / hvezdy_rect.height); |
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if (opacity >= 0 && opacity <= 1){ |
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console.log("opacity: " + opacity); |
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console.log("Opacity: " + opacity); |
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} |
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let zjeveni = document.querySelector('#zjeveni'); |
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let zjeveni_rect = zjeveni.getBoundingClientRect(); |
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let zeme_img = document.querySelector(".earth-fixed"); |
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console.log("zjeveni: " + (zjeveni_rect.height - zjeveni_rect.top)); |
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if (zjeveni_rect.height - zjeveni_rect.top > 0) { |
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let opacity = (zjeveni_rect.top / zjeveni_rect.height); |
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console.log("zjeveni opacity: " + opacity) |
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zeme_img.style.opacity = opacity; |
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} |
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} |
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//cisla v konzoli |
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window.addEventListener('load', handler, false); |
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window.addEventListener('scroll', handler, false); |
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window.addEventListener('resize', handler, false); |
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david subr
4 years ago
