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--- test01 [2022/03/29 07:50] – torsten.roehl
+++ test01 [2022/07/11 09:57] (aktuell) – torsten.roehl
@@ Zeile 1: / Zeile 1: @@
-====== Überschrift ======
+==AA==
-~~stoggle_buttons~~
+<PRELOAD>
-===== Überschrift =====
+#
+# jsxgraph
+#
+https://cdn.jsdelivr.net/npm/jsxgraph/distrib/jsxgraphcore.js
+https://cdn.jsdelivr.net/npm/jsxgraph/distrib/jsxgraph.css
-[[demo_limbdarkening|Lichtkurve ohne Randverdunkelung]]
+</PRELOAD>
+<HTML>
+<body>
+<div id="box" class="jxgbox" style="width:500px; height:500px;"></div>
+<script type="text/javascript">
+var brd = JXG.JSXGraph.initBoard('jxgbox',{axis:false,boundingbox:[-5,5,5,-5],keepaspectratio:true});
-===== Level 2 Überschrift =====
+var p = brd.create('point', [0,0]);
+var q = brd.create('point', [3,3]);
+var circ = brd.create('circle', [p, q]);
+// Create an empty curve
+var ticks = brd.create('curve', [[0], [0]],
+             {strokeWidth: 1,
+              strokeColor: 'blue',
+              strokeOpacity: 0.5});
+// Make ticks out of the curve
+ticks.updateDataArray = function() {
+    var cx = circ.center.X(),
+        cy = circ.center.Y(),
+        r = circ.Radius(),
+        i,
+        ticklen = 0.3,           // Length of ticks in user space coordinates
+        steps = 20,              // Number of ticks
+        d = ticklen * 0.5,
+        alpha = 2 * Math.PI / steps;
+    this.dataX = [];
+    this.dataY = [];
+    for (i = 0; i < steps; i++) {
+        // Start of a tick
+        this.dataX.push( cx + (r - d)* Math.cos(i * alpha) );
+        this.dataY.push( cy + (r - d) * Math.sin(i * alpha) );
+        // End of tick
+        this.dataX.push( cx + (r + d) * Math.cos(i * alpha) );
+        this.dataY.push( cy + (r + d) * Math.sin(i * alpha) );
+        // Interrupt the curve
+        this.dataX.push( NaN );
+        this.dataY.push( NaN );
+    }
+};
+brd.update();
+</script>
+</body>
+</HTML>
+hhjkjkj