ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Optimize processing flat coordinates

Browse Source
This commit is contained in:
GaborFarkas
2016-09-13 16:08:21 +02:00
parent 5d65028d26
commit 657f2c7b6c
1 changed files with 25 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/ol/render/webgl/imagereplay/index.js
View File

@@ -1773,17 +1773,23 @@ ol.render.webgl.PolygonReplay.prototype.processFlatCoordinates_ = function(
var p0;
/** @type {ol.WebglPolygonVertex} */
var p1;
var extents = [];
var segments = [];
if (clockwise === isClockwise) {
start = this.createPoint_(flatCoordinates[0], flatCoordinates[1], n++);
p0 = start;
maxX = flatCoordinates[0];
for (i = stride, ii = flatCoordinates.length; i < ii; i += stride) {
p1 = this.createPoint_(flatCoordinates[i], flatCoordinates[i + 1], n++);
this.insertItem_(p0, p1, list);
segments.push(this.insertItem_(p0, p1, list));
extents.push([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y), Math.max(p0.x, p1.x),
Math.max(p0.y, p1.y)]);
maxX = flatCoordinates[i] > maxX ? flatCoordinates[i] : maxX;
p0 = p1;
}
this.insertItem_(p1, start, list);
segments.push(this.insertItem_(p1, start, list));
extents.push([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y), Math.max(p0.x, p1.x),
Math.max(p0.y, p1.y)]);
} else {
var end = flatCoordinates.length - stride;
start = this.createPoint_(flatCoordinates[end], flatCoordinates[end + 1], n++);
@@ -1791,12 +1797,17 @@ ol.render.webgl.PolygonReplay.prototype.processFlatCoordinates_ = function(
maxX = flatCoordinates[end];
for (i = end - stride, ii = 0; i >= ii; i -= stride) {
p1 = this.createPoint_(flatCoordinates[i], flatCoordinates[i + 1], n++);
this.insertItem_(p0, p1, list);
segments.push(this.insertItem_(p0, p1, list));
extents.push([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y), Math.max(p0.x, p1.x),
Math.max(p0.y, p1.y)]);
maxX = flatCoordinates[i] > maxX ? flatCoordinates[i] : maxX;
p0 = p1;
}
this.insertItem_(p1, start, list);
segments.push(this.insertItem_(p1, start, list));
extents.push([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y), Math.max(p0.x, p1.x),
Math.max(p0.y, p1.y)]);
}
this.rtree_.load(extents, segments);
return maxX;
};
@@ -1899,8 +1910,8 @@ ol.render.webgl.PolygonReplay.prototype.bridgeHole_ = function(hole, holeMaxX,
var p1Bridge = {x: seg.p1.x, y: seg.p1.y, i: seg.p1.i, reflex: undefined};
hole.getNextItem().p0 = p0Bridge;
this.insertItem_(p1, seg.p1, hole);
this.insertItem_(p1Bridge, p0Bridge, hole);
this.insertItem_(p1, seg.p1, hole, true);
this.insertItem_(p1Bridge, p0Bridge, hole, true);
seg.p1 = p1Bridge;
hole.setFirstItem();
list.concat(hole);
@@ -2101,15 +2112,20 @@ ol.render.webgl.PolygonReplay.prototype.createPoint_ = function(x, y, i) {
* @param {ol.WebglPolygonVertex} p0 First point of segment.
* @param {ol.WebglPolygonVertex} p1 Second point of segment.
* @param {ol.structs.LinkedList} list Polygon ring.
* @param {boolean=} opt_rtree Insert the segment into the R-Tree.
* @return {Object.<string, ol.WebglPolygonVertex>} segment.
*/
ol.render.webgl.PolygonReplay.prototype.insertItem_ = function(p0, p1, list) {
ol.render.webgl.PolygonReplay.prototype.insertItem_ = function(p0, p1, list, opt_rtree) {
var seg = {
p0: p0,
p1: p1
};
list.insertItem(seg);
this.rtree_.insert([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y),
Math.max(p0.x, p1.x), Math.max(p0.y, p1.y)], seg);
if (opt_rtree) {
this.rtree_.insert([Math.min(p0.x, p1.x), Math.min(p0.y, p1.y),
Math.max(p0.x, p1.x), Math.max(p0.y, p1.y)], seg);
}
return seg;
};