本文整理汇总了C#中SharpMap.Map.GetExtents方法的典型用法代码示例。如果您正苦于以下问题：C# SharpMap.Map.GetExtents方法的具体用法？C# SharpMap.Map.GetExtents怎么用？C# SharpMap.Map.GetExtents使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SharpMap.Map的用法示例。
在下文中一共展示了SharpMap.Map.GetExtents方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: InitializeMap
public static SharpMap.Map InitializeMap(float angle)
{
using (var ofn = new System.Windows.Forms.OpenFileDialog())
{
ofn.Filter = "All files|*.*";
ofn.FilterIndex = 0;
if (ofn.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
var m = new SharpMap.Map();
var l = new SharpMap.Layers.GdiImageLayer(ofn.FileName);
m.Layers.Add(l);
m.ZoomToExtents();
var mat = new System.Drawing.Drawing2D.Matrix();
mat.RotateAt(angle, m.WorldToImage(m.Center));
m.MapTransform = mat;
m.MaximumExtents = m.GetExtents();
m.EnforceMaximumExtents = true;
return m;
}
}
return null;
}示例2: TestRealData
public void TestRealData()
{
var fdt = GetRealFeatureDataTable();
FillRealDataTable(fdt);
var p = new SharpMap.Data.Providers.FeatureProvider(fdt);
var m = new SharpMap.Map(new Size(640, 640));
m.Layers.Add(new TileLayer(
new OsmTileSource(new OsmRequest(KnownTileServers.Mapnik) /*,
new FileCache(@"d:\temp\OSM", "png")*/), "OSM"));
var l = new HeatLayer(p, "Data", 0.001f);
l.LayerName = "HEAT";
m.Layers.Add(l);
#if DotSpatialProjections
l.CoordinateTransformation = new DotSpatial.Projections.CoordinateTransformation
{
Source = ProjectionInfo.FromEpsgCode(4326),
Target = ProjectionInfo.FromEpsgCode(3857)
};
#else
var ctfac = new ProjNet.CoordinateSystems.Transformations.CoordinateTransformationFactory();
l.CoordinateTransformation =
ctfac.CreateFromCoordinateSystems(ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84,
ProjNet.CoordinateSystems.ProjectedCoordinateSystem.WebMercator);
#endif
l.ZoomMin = 0;// 0.01 * m.GetExtents().Width;
l.ZoomMax = /*0.9 * */m.GetExtents().Width;
l.OpacityMax = 1;
l.OpacityMin = 0.3f;
m.ZoomToBox(l.Envelope);
for (var i = 0; i < 5; i++)
{
using (var img = m.GetMap())
{
img.Save("RealDataHeat" + i + ".png");
}
m.Zoom /= 2;
}
m.ZoomToExtents();
using (var img = m.GetMap())
{
img.Save("RealDataHeat.png");
}
}示例3: InitializeMap
public static SharpMap.Map InitializeMap(float angle)
{
var fdt = GetRealFeatureDataTable();
FillRealDataTable(fdt);
var p = new SharpMap.Data.Providers.GeometryFeatureProvider(fdt);
var m = new SharpMap.Map();
m.BackgroundLayer.Add(new SharpMap.Layers.TileAsyncLayer(
new BruTile.Web.OsmTileSource(
new BruTile.Web.OsmRequest(KnownTileSource.OpenStreetMap),
new BruTile.Cache.FileCache(@"d:\temp\OSM", "png")), "OSM"));
m.BackgroundLayer[0].LayerName = "TileLayer with HeatLayer";
//var l = new SharpMap.Layers.HeatLayer(p, r => 0.02f) { LayerName = "HEAT" };
var l = new SharpMap.Layers.HeatLayer(p, "Data", 0.00025f) { LayerName = "HEAT" };
m.Layers.Add(l);
#if DotSpatialProjections
l.CoordinateTransformation = new DotSpatial.Projections.CoordinateTransformation
{
Source = DotSpatial.Projections.ProjectionInfo.FromEpsgCode(4326),
Target = DotSpatial.Projections.ProjectionInfo.FromEpsgCode(3857)
};
#else
var ctfac = new ProjNet.CoordinateSystems.Transformations.CoordinateTransformationFactory();
l.CoordinateTransformation =
ctfac.CreateFromCoordinateSystems(ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84,
ProjNet.CoordinateSystems.ProjectedCoordinateSystem.WebMercator);
#endif
l.ZoomMin = 0;// 0.01 * m.GetExtents().Width;
l.ZoomMax = /*0.9 * */m.GetExtents().Width;
l.OpacityMax = 0.5f;
l.OpacityMin = 0.9f;
l.HeatColorBlend = SharpMap.Layers.HeatLayer.Classic;
var env = l.Envelope;
GeoAPI.Geometries.GeoAPIEx.Grow(env, env.Width * 0.05, env.Height * 0.05);
//m.EnforceMaximumExtents = true;
//m.MaximumExtents = env;
m.ZoomToBox(env);
return m;
}示例4: GetExtents_ValidDatasource
public void GetExtents_ValidDatasource()
{
SharpMap.Map map = new SharpMap.Map(new System.Drawing.Size(400, 200));
SharpMap.Layers.VectorLayer vLayer = new SharpMap.Layers.VectorLayer("Geom layer", CreateDatasource());
map.Layers.Add(vLayer);
SharpMap.Geometries.BoundingBox box = map.GetExtents();
Assert.AreEqual(new SharpMap.Geometries.BoundingBox(0, 0, 50, 346.3493254), box);
}