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sin()Cette fonctionnalit est bien tablie et fonctionne sur de nombreux appareils et versions de navigateurs. Elle est disponible sur tous les navigateurs depuis mars 2023.
La fonction CSS sin() est une fonction trigonomtrique qui retourne le sinus d'un nombre, qui est une valeur comprise entre -1 et 1. La fonction contient un seul calcul qui doit se rsoudre soit en un nombre (<number>), soit en un angle (<angle>) en interprtant le rsultat de l'argument comme des radians. C'est--dire que sin(45deg), sin(0.125turn) et sin(3.14159 / 4) reprsentent tous la mme valeur, environ 0.707.
transform: translateX(calc(cos(0deg) * 140px))
translateY(calc(sin(0deg) * -140px));
transform: translateX(calc(cos(90deg) * 140px))
translateY(calc(sin(90deg) * -140px));
transform: translateX(calc(cos(135deg) * 140px))
translateY(calc(sin(135deg) * -140px));
transform: translateX(calc(cos(180deg) * 140px))
translateY(calc(sin(180deg) * -140px));
transform: translateX(calc(cos(-45deg) * 140px))
translateY(calc(sin(-45deg) * -140px));
<div class="circle">
<span class="dot" id="example-element"></span>
</div>
:root {
--radius: 140px;
--dot-size: 10px;
}
.circle {
display: grid;
place-content: center;
margin: 0 auto;
width: calc(var(--radius) * 2);
aspect-ratio: 1;
border-radius: 50%;
border: 2px solid #666666;
background-image:
radial-gradient(black var(--dot-size), transparent var(--dot-size)),
linear-gradient(135deg, blue, deepskyblue, lightgreen, lavender, honeydew);
}
.dot {
display: block;
width: var(--dot-size);
aspect-ratio: 1;
border-radius: 50%;
border: 2px solid #666666;
background-color: #ff6666;
transform: translateX(calc(cos(0deg) * var(--radius)))
translateY(calc(sin(0deg) * var(--radius) * -1));
}
/* Un seule valeur <angle> */
width: calc(100px * sin(45deg));
width: calc(100px * sin(0.25turn));
width: calc(100px * sin(1.0471967rad));
/* Un seule valeur <number> */
width: calc(100px * sin(63.673));
width: calc(100px * sin(2 * 0.125));
/* Autres valeurs */
width: calc(100px * sin(pi / 2));
width: calc(100px * sin(e / 4));
La fonction sin(angle) n'accepte qu'une seule valeur comme paramtre.
angleUn calcul qui se rsout en un nombre (<number>) ou en un angle (<angle>). Lorsqu'on dfinit des nombres sans unit, ils sont interprts comme un nombre de radians, reprsentant un angle (<angle>).
Le sinus d'un angle retourne toujours un nombre compris entre 1 et 1.
angle est infinity, -infinity ou NaN, le rsultat est NaN.angle est 0, le rsultat est 0.<sin()> =Cette syntaxe reflte le dernier standard selon CSS Values and Units Module Level 4. Tous les navigateurs n'ont peut-tre pas implment toutes les parties. Voir la Compatibilit des navigateurs pour plus d'informations sur la prise en charge.
sin( <calc-sum> )
<calc-sum> =
<calc-product> [ [ '+' | '-' ] <calc-product> ]*
<calc-product> =
<calc-value> [ [ '*' | / ] <calc-value> ]*
<calc-value> =
<number> |
<dimension> |
<percentage> |
<calc-keyword> |
( <calc-sum> )
<calc-keyword> =
e |
pi |
infinity |
-infinity |
NaN
Dans cet exemple, sin(30deg) retourne 0.5, ce qui donne la bote une largeur de 50px et une hauteur de 50px.
div {
background-color: red;
width: calc(sin(30deg) * 100px);
height: calc(sin(30deg) * 100px);
}
Un autre cas d'utilisation est de contrler la dure de l'animation (animation-duration), en rduisant la dure en fonction de la valeur du sinus. Dans ce cas, la dure de l'animation est de 1s.
div {
animation-name: myAnimation;
animation-duration: calc(sin(0.25turn) * 1s);
}
| Spcification |
|---|
| CSS Values and Units Module Level 4 # trig-funcs |
cos()tan()asin()acos()atan()atan2()Cette page a t modifie le 10 mai 2026 par les contributeurices du MDN.
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