Polygon through ordered set of gliders: Difference between revisions
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A WASSERMANN (talk | contribs) (New page: <jsxgraph height="500" width="600" board="board" box="jxgbox"> board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, originX: 250, originY: 250, unitX: 50, unitY: 50}); board.suspe...) |
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<jsxgraph height="500" width="600" board="board" box="jxgbox"> | <jsxgraph height="500" width="600" board="board" box="jxgbox"> | ||
board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, | board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox: [-5, 5, 7, -5]}); | ||
board.suspendUpdate(); | board.suspendUpdate(); | ||
var p = []; | var p = []; | ||
p[0] = board.createElement('point', [-1,2], { | p[0] = board.createElement('point', [-1,2], {size:2,name:''}); | ||
p[1] = board.createElement('point', [0,-2], { | p[1] = board.createElement('point', [0,-2], {size:2,name:''}); | ||
p[2] = board.createElement('point', [2,1], { | p[2] = board.createElement('point', [2,1], {size:2,name:''}); | ||
graph = board.createElement('curve', | graph = board.createElement('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5}); | ||
gliders = []; | gliders = []; | ||
gliders[0] = board.createElement('glider', [-1,0,graph],{ | gliders[0] = board.createElement('glider', [-1,0,graph],{size:4}); | ||
gliders[1] = board.createElement('glider', [-0.5,-2,graph],{ | gliders[1] = board.createElement('glider', [-0.5,-2,graph],{size:4}); | ||
gliders[2] = board.createElement('glider', [1,-3,graph],{ | gliders[2] = board.createElement('glider', [1,-3,graph],{size:4}); | ||
gliders[3] = board.createElement('glider', [1.5,-1,graph],{ | gliders[3] = board.createElement('glider', [1.5,-1,graph],{size:4}); | ||
board.createElement('polygon',gliders,{strokeColor:'red'}); | board.createElement('polygon',gliders,{strokeColor:'red'}); | ||
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===The underlying JavaScript code=== | ===The underlying JavaScript code=== | ||
<source lang="javascript"> | <source lang="javascript"> | ||
board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox: [-5, 5, 7, -5]}); | |||
board.suspendUpdate(); | |||
var p = []; | |||
p[0] = board.createElement('point', [-1,2], {size:2,name:''}); | |||
p[1] = board.createElement('point', [0,-2], {size:2,name:''}); | |||
p[2] = board.createElement('point', [2,1], {size:2,name:''}); | |||
graph = board.createElement('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5}); | |||
gliders = []; | |||
gliders[0] = board.createElement('glider', [-1,0,graph],{size:4}); | |||
gliders[1] = board.createElement('glider', [-0.5,-2,graph],{size:4}); | |||
gliders[2] = board.createElement('glider', [1,-3,graph],{size:4}); | |||
gliders[3] = board.createElement('glider', [1.5,-1,graph],{size:4}); | |||
board.createElement('polygon',gliders,{strokeColor:'red'}); | |||
board.updateConditions = function() { | |||
var i; | |||
for (i=1;i<gliders.length;i++) { | |||
if (gliders[i].position<gliders[i-1].position) { | |||
gliders[i].coords = new JXG.Coords(JXG.COORDS_BY_USER, gliders[i-1].coords.usrCoords, board); | |||
gliders[i].update(); | |||
} | |||
}; | |||
} | |||
board.unsuspendUpdate(); | |||
</source> | </source> | ||
[[Category:Examples]] | [[Category:Examples]] |
Revision as of 15:40, 20 February 2013
The underlying JavaScript code
board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox: [-5, 5, 7, -5]});
board.suspendUpdate();
var p = [];
p[0] = board.createElement('point', [-1,2], {size:2,name:''});
p[1] = board.createElement('point', [0,-2], {size:2,name:''});
p[2] = board.createElement('point', [2,1], {size:2,name:''});
graph = board.createElement('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5});
gliders = [];
gliders[0] = board.createElement('glider', [-1,0,graph],{size:4});
gliders[1] = board.createElement('glider', [-0.5,-2,graph],{size:4});
gliders[2] = board.createElement('glider', [1,-3,graph],{size:4});
gliders[3] = board.createElement('glider', [1.5,-1,graph],{size:4});
board.createElement('polygon',gliders,{strokeColor:'red'});
board.updateConditions = function() {
var i;
for (i=1;i<gliders.length;i++) {
if (gliders[i].position<gliders[i-1].position) {
gliders[i].coords = new JXG.Coords(JXG.COORDS_BY_USER, gliders[i-1].coords.usrCoords, board);
gliders[i].update();
}
};
}
board.unsuspendUpdate();