OpenLayers深入浅出（7）----定制要素样式

var sketchSymbolizers = {                "Point": {                    pointRadius: 4,                    graphicName: "square",                    fillColor: "white",                    fillOpacity: 1,                    strokeWidth: 1,                    strokeOpacity: 1,                    strokeColor: "#333333"                },                "Line": {                    strokeWidth: 3,                    strokeOpacity: 1,                    strokeColor: "#666666",                    strokeDashstyle: "dash"                },                "Polygon": {                    strokeWidth: 2,                    strokeOpacity: 1,                    strokeColor: "#666666",                    fillColor: "white",                    fillOpacity: 0.3                }            };