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Adding interior ring digitizing for polygons. Thanks jachym for the initial work. r=ahocevar (closes #1894)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@10828 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2010-10-13 22:12:52 +00:00
parent ba21865e28
commit 1397f816b5
4 changed files with 432 additions and 3 deletions
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181
tests/Handler/Polygon.html
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@@ -158,6 +158,187 @@
map.destroy();
}
function test_rings(t) {
t.plan(12);
var log = [];
var map = new OpenLayers.Map({
div: "map",
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-10, -10, 10, 10),
layers: [
new OpenLayers.Layer.Vector(null, {
isBaseLayer: true,
eventListeners: {
featureadded: function(event) {
log.push(event);
},
sketchmodified: function(event) {
log.push(event);
},
sketchcomplete: function(event) {
log.push(event);
}
}
})
],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
// create control for drawing polygons with holes
var draw = new OpenLayers.Control.DrawFeature(
map.layers[0],
OpenLayers.Handler.Polygon,
{handlerOptions: {holeModifier: "altKey"}}
);
map.addControl(draw);
draw.activate();
var event;
function trigger(type, event) {
map.events.triggerEvent(type, OpenLayers.Util.extend({}, event));
}
// a) draw a polygon
log = [];
// start at -9, 9
event = {xy: new OpenLayers.Pixel(-9, 9)};
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -1, 9
event = {xy: new OpenLayers.Pixel(-1, 9)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -1, 1
event = {xy: new OpenLayers.Pixel(-1, 1)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -9, 1
event = {xy: new OpenLayers.Pixel(-9, 1)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// finish
event = {xy: new OpenLayers.Pixel(-9, 1)};
trigger("mousedown", event);
trigger("mouseup", event);
trigger("dblclick", event);
// make assertions
t.eq(log.length, 9, "a) correct number of events");
t.eq(log[log.length-1].type, "featureadded", "a) featureadded event last");
t.eq(log[log.length-1].feature.geometry.getArea(), 64, "a) correct polygon area");
// b) draw a hole
log = [];
// start at -6, 6
event = {xy: new OpenLayers.Pixel(-6, 6), altKey: true};
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -3, 6
event = {xy: new OpenLayers.Pixel(-3, 6), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -3, 3
event = {xy: new OpenLayers.Pixel(-3, 3), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -6, 3
event = {xy: new OpenLayers.Pixel(-6, 3), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// finish
event = {xy: new OpenLayers.Pixel(-6, 3), altKey: true};
trigger("mousedown", event);
trigger("mouseup", event);
trigger("dblclick", event);
// make assertions
t.eq(log.length, 8, "b) correct number of events");
t.eq(log[log.length-1].type, "sketchcomplete", "b) sketchcomplete event last");
t.eq(log[log.length-1].feature.geometry.getArea(), 55, "b) correct polygon area");
// c) draw a polygon that overlaps the first
log = [];
// start at -2, 2
event = {xy: new OpenLayers.Pixel(-2, 2)};
trigger("mousedown", event);
trigger("mouseup", event);
// draw to 2, 2
event = {xy: new OpenLayers.Pixel(2, 2)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to 2, -2
event = {xy: new OpenLayers.Pixel(2, -2)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -2, -2
event = {xy: new OpenLayers.Pixel(-2, -2)};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// finish
event = {xy: new OpenLayers.Pixel(-2, -2)};
trigger("mousedown", event);
trigger("mouseup", event);
trigger("dblclick", event);
// make assertions
t.eq(log.length, 9, "c) correct number of events");
t.eq(log[log.length-1].type, "featureadded", "c) featureadded event last");
t.eq(log[log.length-1].feature.geometry.getArea(), 16, "c) correct polygon area");
// d) draw a hole that tries to go outside the exterior ring
log = [];
// start at -1, 1
event = {xy: new OpenLayers.Pixel(-1, 1), altKey: true};
trigger("mousedown", event);
trigger("mouseup", event);
// draw to 1, 1
event = {xy: new OpenLayers.Pixel(1, 1), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// try to draw to -8, 8 (ouside active polygon)
event = {xy: new OpenLayers.Pixel(-8, 8), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to 1, -1
event = {xy: new OpenLayers.Pixel(1, -1), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// draw to -1, -1
event = {xy: new OpenLayers.Pixel(-1, -1), altKey: true};
trigger("mousemove", event);
trigger("mousedown", event);
trigger("mouseup", event);
// finish
event = {xy: new OpenLayers.Pixel(-1, 1), altKey: true};
trigger("mousedown", event);
trigger("mouseup", event);
trigger("dblclick", event);
// make assertions
t.eq(log.length, 11, "d) correct number of events");
t.eq(log[log.length-1].type, "sketchcomplete", "d) sketchcomplete event last");
t.eq(log[log.length-1].feature.geometry.getArea(), 12, "d) correct polygon area");
map.destroy();
}
function test_Handler_Polygon_destroy(t) {
t.plan(8);
var map = new OpenLayers.Map('map');