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Add support for irregular transformations to TransformFeature

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Give the TransformFeature control an irregular mode where dragging a
handle just extends that side rather than growing the shape symmetrically
about the centre.
This commit is contained in:
Tom Hughes
2010-04-26 16:21:59 +01:00
parent f5ac1fcd72
commit a46707e727
1 changed files with 16 additions and 1 deletions
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17
lib/OpenLayers/Control/TransformFeature.js
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@@ -165,7 +165,13 @@ OpenLayers.Control.TransformFeature = OpenLayers.Class(OpenLayers.Control, {
* {<OpenLayers.Control.DragFeature>}
*/
dragControl: null,
/**
* APIProperty: irregular
* {Boolean}
*/
irregular: false,
/**
* Constructor: OpenLayers.Control.TransformFeature
* Create a new transform feature control.
@@ -390,6 +396,14 @@ OpenLayers.Control.TransformFeature = OpenLayers.Class(OpenLayers.Control, {
var dy1 = this.y - centerGeometry.y;
var dx0 = dx1 - (this.x - oldGeom.x);
var dy0 = dy1 - (this.y - oldGeom.y);
if (control.irregular && !control._setfeature) {
dx1 -= (this.x - oldGeom.x) / 2;
dy1 -= (this.y - oldGeom.y) / 2;
var newCenter = centerGeometry.clone();
newCenter.x += Math.abs(dx0) < 0.00001 ? 0 : (this.x - oldGeom.x) / 2;
newCenter.y += Math.abs(dy0) < 0.00001 ? 0 : (this.y - oldGeom.y) / 2;
control.transformFeature({center: newCenter});
}
this.x = oldX;
this.y = oldY;
var scale, ratio = 1;
@@ -410,6 +424,7 @@ OpenLayers.Control.TransformFeature = OpenLayers.Class(OpenLayers.Control, {
control.box.geometry.resize(scale, centerGeometry, ratio);
control.box.geometry.rotate(control.rotation, centerGeometry);
control.box.move(control.feature.geometry.getBounds().getCenterLonLat());
control.transformFeature({scale: scale, ratio: ratio});
};