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<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script> | <script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script> | ||
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script> | <script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script> | ||
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div> | <div id="jxgbox" class="jxgbox" style="width:500px; height:200px; position:relative;"></div> | ||
<script type="text/javascript"> | <script type="text/javascript"> | ||
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50}); | var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50}); | ||
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<html> | <html> | ||
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div> | <div id="jxgbox2" class="jxgbox" style="width:500px; height:200px; position:relative;"></div> | ||
<script type="text/javascript"> | <script type="text/javascript"> | ||
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50}); | var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50}); | ||
Revision as of 14:00, 24 November 2008
Construction of a line
A line needs two points. Lets construct two points "A" and "B".
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = b.createElement('point',[-1,1], {name:'A',style:6});
var p2 = b.createElement('point',[2,-1], {name:'B',style:6});
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
var li = b.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
Generally it is better to use JavaScript variables and not Geometry-Element names when constructing. Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment. To show another variation, we use a dashed line style.
var li2 = b.createElement('line',[p1,p2],
{straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
