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author | julieng <julien.gattelier@gmail.com> | 2021-10-02 17:20:14 +0200 |
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committer | SphinxKnight <SphinxKnight@users.noreply.github.com> | 2021-10-02 17:30:20 +0200 |
commit | c05efa8d7ae464235cf83d7c0956e42dc6974103 (patch) | |
tree | 6ea911b2f2010f63a026de6bb7a1a51e7690a7e1 /files/fr/web/api/canvasrenderingcontext2d/beginpath/index.md | |
parent | 13a5e017558b248ee1647d4a5825f183b51f09ad (diff) | |
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diff --git a/files/fr/web/api/canvasrenderingcontext2d/beginpath/index.md b/files/fr/web/api/canvasrenderingcontext2d/beginpath/index.md new file mode 100644 index 0000000000..e59e5be4a4 --- /dev/null +++ b/files/fr/web/api/canvasrenderingcontext2d/beginpath/index.md @@ -0,0 +1,128 @@ +--- +title: CanvasRenderingContext2D.beginPath() +slug: Web/API/CanvasRenderingContext2D/beginPath +tags: + - API + - Canvas + - CanvasRenderingContext2D +translation_of: Web/API/CanvasRenderingContext2D/beginPath +--- +<div>{{APIRef}}</div> + +<p>La méthode <code><strong>CanvasRenderingContext2D</strong></code><strong><code>.beginPath()</code></strong> de l'API Canvas 2D permet de commencer un nouveau chemin<em> e</em>n vidant la liste des sous-chemins. Appelez cette méthode quand vous voulez créer un nouveau chemin.</p> + +<h2 id="Syntaxe">Syntaxe</h2> + +<pre class="syntaxbox">void <var><em>ctx</em>.beginPath();</var> +</pre> + +<h2 id="Exemples">Exemples</h2> + +<h3 id="Utiliser_la_méthode_beginPath">Utiliser la méthode <code>beginPath</code></h3> + +<p>Ceci est un simple snippet de code qui utilise la méthode <code>beginPath</code>.</p> + +<h4 id="HTML">HTML</h4> + +<pre class="brush: html"><canvas id="canvas"></canvas> +</pre> + +<h4 id="JavaScript">JavaScript</h4> + +<pre class="brush: js">var canvas = document.getElementById('canvas'); +var ctx = canvas.getContext('2d'); + +// Premier chemin +ctx.beginPath(); +ctx.strokeStyle = 'blue'; +ctx.moveTo(20, 20); +ctx.lineTo(200, 20); +ctx.stroke(); + +// Second chemin +ctx.beginPath(); +ctx.strokeStyle = 'green'; +ctx.moveTo(20, 20); +ctx.lineTo(120, 120); +ctx.stroke(); +</pre> + +<p>Éditez le code ci-dessous pour voir vos changements directemment apportés au canvas:</p> + +<h4 id="code_jouable">Code jouable</h4> + +<pre class="brush: html hidden"><canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas> +<div class="playable-buttons"> + <input id="edit" type="button" value="Edit" /> + <input id="reset" type="button" value="Reset" /> +</div> +<textarea id="code" class="playable-code" style="height:200px"> +// First path +ctx.beginPath(); +ctx.strokeStyle = 'blue'; +ctx.moveTo(20,20); +ctx.lineTo(200,20); +ctx.stroke(); + +// Second path +ctx.beginPath(); +ctx.strokeStyle = 'green'; +ctx.moveTo(20,20); +ctx.lineTo(120, 120); +ctx.stroke();</textarea> +</pre> + +<pre class="brush: js hidden">var canvas = document.getElementById("canvas"); +var ctx = canvas.getContext("2d"); +var textarea = document.getElementById("code"); +var reset = document.getElementById("reset"); +var edit = document.getElementById("edit"); +var code = textarea.value; + +function drawCanvas() { + ctx.clearRect(0, 0, canvas.width, canvas.height); + eval(textarea.value); +} + +reset.addEventListener("click", function() { + textarea.value = code; + drawCanvas(); +}); + +edit.addEventListener("click", function() { + textarea.focus(); +}) + +textarea.addEventListener("input", drawCanvas); +window.addEventListener("load", drawCanvas); +</pre> + +<p>{{ EmbedLiveSample('code_jouable', 700, 460) }}</p> + +<h2 id="Spécifications">Spécifications</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('HTML WHATWG', "scripting.html#dom-context-2d-beginpath", "CanvasRenderingContext2D.beginPath")}}</td> + <td>{{Spec2('HTML WHATWG')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Compatibilité_des_navigateurs">Compatibilité des navigateurs</h2> + +<p>{{Compat("api.CanvasRenderingContext2D.beginPath")}}</p> + +<h2 id="Voir_aussi">Voir aussi</h2> + +<ul> + <li>L'interface qui définit cette méthode, {{domxref("CanvasRenderingContext2D")}}</li> + <li>{{domxref("CanvasRenderingContext2D.closePath()")}}</li> +</ul> |