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adding irregular option to regular polygon control - now, go draw rectangles, and more - thanks for the review elem (closes #1098).

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@5200 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2007-11-15 23:37:36 +00:00
parent 75163f6635
commit ceecacfe3a
7 changed files with 102 additions and 11 deletions
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32
lib/OpenLayers/Handler/RegularPolygon.js
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@@ -62,6 +62,18 @@ OpenLayers.Handler.RegularPolygon = OpenLayers.Class(OpenLayers.Handler.Drag, {
*/
persist: false,
/**
* APIProperty: irregular
* {Boolean} Draw an irregular polygon instead of a regular polygon.
* Default is false. If true, the initial mouse down will represent
* one corner of the polygon bounds and with each mouse movement, the
* polygon will be stretched so the opposite corner of its bounds
* follows the mouse position. This property takes precedence over
* the radius property. If set to true, the radius property will
* be ignored.
*/
irregular: false,
/**
* Property: angle
* {Float} The angle from the origin (mouse down) to the current mouse
@@ -194,7 +206,7 @@ OpenLayers.Handler.RegularPolygon = OpenLayers.Class(OpenLayers.Handler.Drag, {
var maploc = this.map.getLonLatFromPixel(evt.xy);
this.origin = new OpenLayers.Geometry.Point(maploc.lon, maploc.lat);
// create the new polygon
if(!this.fixedRadius) {
if(!this.fixedRadius || this.irregular) {
// smallest radius should not be less one pixel in map units
// VML doesn't behave well with smaller
this.radius = this.map.getResolution();
@@ -218,7 +230,10 @@ OpenLayers.Handler.RegularPolygon = OpenLayers.Class(OpenLayers.Handler.Drag, {
move: function(evt) {
var maploc = this.map.getLonLatFromPixel(evt.xy);
var point = new OpenLayers.Geometry.Point(maploc.lon, maploc.lat);
if(this.fixedRadius) {
if(this.irregular) {
var ry = Math.sqrt(2) * Math.abs(point.y - this.origin.y) / 2;
this.radius = Math.max(this.map.getResolution() / 2, ry);
} else if(this.fixedRadius) {
this.origin = point;
} else {
this.calculateAngle(point, evt);
@@ -226,6 +241,18 @@ OpenLayers.Handler.RegularPolygon = OpenLayers.Class(OpenLayers.Handler.Drag, {
point.distanceTo(this.origin));
}
this.modifyGeometry();
if(this.irregular) {
var dx = point.x - this.origin.x;
var dy = point.y - this.origin.y;
var ratio;
if(dy == 0) {
ratio = dx / (this.radius * Math.sqrt(2));
} else {
ratio = dx / dy;
}
this.feature.geometry.resize(1, this.origin, ratio);
this.feature.geometry.move(dx / 2, dy / 2);
}
this.layer.drawFeature(this.feature, this.style);
},
@@ -277,6 +304,7 @@ OpenLayers.Handler.RegularPolygon = OpenLayers.Class(OpenLayers.Handler.Drag, {
// if the number of sides ever changes, create a new geometry
if(ring.components.length != (this.sides + 1)) {
this.createGeometry();
ring = this.feature.geometry.components[0];
}
for(var i=0; i<this.sides; ++i) {
point = ring.components[i];