OpenLayers 2：仅用两点绘制路径

Question

我想绘制一条不超过2分的路径。在第二点，我希望路径完成。

任何人都可以帮助我如何在openlayers 2中实现此功能。

我尝试了这段代码，但是虽然很好地创建了行，但它会出错。

        _singleLineControl = new OpenLayers.Control.DrawFeature(
            _singleLineLayer,
            OpenLayers.Handler.Path,
            {
                eventListeners: { "featureadded": drawingFinished },
                callbacks: {
                    point: function (pointGeometry, lineGeometry) {
                        var numPoints = lineGeometry.getVertices().length;
                        if (numPoints == 3) {
                            this.drawFeature(lineGeometry);
                        }
                    }
                }
            });
        viewer.addControl(_singleLineControl);
        _singleLineControl.handler.single = true;
        _singleLineControl.handler.freehand = false;
        _singleLineControl.deactivate();

Answer 1

使用Error Loading Stream: Could not connect to server

自己找到了解决方案

maxVertices