cb0dffc045
git-svn-id: http://svn.openlayers.org/trunk/openlayers@9999 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
106 lines
4.2 KiB
HTML
106 lines
4.2 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
|
||
<head>
|
||
<title>OpenLayers: Transformation Box</title>
|
||
<link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
|
||
<link rel="stylesheet" href="style.css" type="text/css" />
|
||
<script src="../lib/OpenLayers.js" type="text/javascript"></script>
|
||
<script type="text/javascript">
|
||
var map, control;
|
||
|
||
function init(){
|
||
map = new OpenLayers.Map('map', {allOverlays: true});
|
||
|
||
// context for appropriate scale/resize cursors
|
||
var cursors = ["sw-resize", "s-resize", "se-resize",
|
||
"e-resize", "ne-resize", "n-resize", "nw-resize", "w-resize"];
|
||
var context = {
|
||
getCursor: function(feature){
|
||
var i = OpenLayers.Util.indexOf(control.handles, feature);
|
||
var cursor = "inherit";
|
||
if(i !== -1) {
|
||
i = (i + 8 + Math.round(control.rotation / 90) * 2) % 8;
|
||
cursor = cursors[i];
|
||
}
|
||
return cursor;
|
||
}
|
||
};
|
||
|
||
// a nice style for the transformation box
|
||
var style = new OpenLayers.Style({
|
||
cursor: "${getCursor}",
|
||
pointRadius: 5,
|
||
fillColor: "white",
|
||
fillOpacity: 1,
|
||
strokeColor: "black"
|
||
}, {context: context});
|
||
|
||
// the layer that we want to transform features on
|
||
var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {
|
||
styleMap: new OpenLayers.StyleMap({
|
||
"transform": style
|
||
})
|
||
});
|
||
|
||
// create the TransformFeature control, using the renderIntent
|
||
// from above
|
||
control = new OpenLayers.Control.TransformFeature(vectorLayer, {
|
||
renderIntent: "transform"
|
||
});
|
||
map.addControl(control);
|
||
|
||
// create a polygon feature from a linear ring of points
|
||
var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
|
||
var pointList = [];
|
||
for(var p=0; p<6; ++p) {
|
||
var a = p * (2 * Math.PI) / 7;
|
||
var r = Math.random(1) + 2;
|
||
var newPoint = new OpenLayers.Geometry.Point(point.x + (r * Math.cos(a)),
|
||
point.y + (r * Math.sin(a)));
|
||
pointList.push(newPoint);
|
||
}
|
||
pointList.push(pointList[0]);
|
||
|
||
var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
|
||
var polygonFeature = new OpenLayers.Feature.Vector(
|
||
new OpenLayers.Geometry.Polygon([linearRing]));
|
||
|
||
|
||
map.addLayer(vectorLayer);
|
||
map.setCenter(new OpenLayers.LonLat(point.x, point.y), 5);
|
||
var anotherFeature = polygonFeature.clone();
|
||
polygonFeature.geometry.move(-3, 0);
|
||
anotherFeature.geometry.move(3, 0);
|
||
vectorLayer.addFeatures([polygonFeature, anotherFeature]);
|
||
|
||
// start with the transformation box on polygonFeature
|
||
control.setFeature(polygonFeature, {rotation: 45, scale: 0.5, ratio: 1.5});
|
||
}
|
||
</script>
|
||
</head>
|
||
<body onload="init()">
|
||
<h1 id="title">Vector Feature Transformation Box Example</h1>
|
||
|
||
<div id="tags">
|
||
</div>
|
||
<p id="shortdesc">
|
||
Shows the use of the TransformFeature control.
|
||
</p>
|
||
<div style="text-align: right">
|
||
<div dir="rtl" id="map" class="smallmap"></div>
|
||
</div>
|
||
<div id="docs">
|
||
<p>This example shows transformation of vector features with a
|
||
tranformation box. Grab one of the handles to resize the feature.
|
||
Holding the SHIFT key will preserve the aspect ratio. Position the
|
||
mouse right outside one of the corner handles to rotate the feature,
|
||
and hold the SHIFT key to only rotate in 45<34> increments.</p>
|
||
<p>In this example, the transformation box has been set on the left
|
||
feature, with a rotation preset of 45<34>. Clicking on the right feature
|
||
will set it for transformation, starting with an unrotated box.
|
||
Dragging a feature or the box edges will move it around.</p>
|
||
</div>
|
||
|
||
</body>
|
||
</html>
|
||
|