using System;
using System.Collections.Generic;
using System.Text;
using System.Globalization;
using System.Drawing;
namespace OSGeo.MapGuide.Viewer
{
internal static class Util
{
static List<double> simulateCirclePoints;
static int simulateCircleHalfPointNumber = 40;
static Util()
{
simulateCirclePoints = new List<double>();
for (var i = 0; i < 2 * simulateCircleHalfPointNumber + 1; i++)
{
simulateCirclePoints.Add(Math.Cos(Math.PI * i / simulateCircleHalfPointNumber));
simulateCirclePoints.Add(Math.Sin(Math.PI * i / simulateCircleHalfPointNumber));
}
}
public static string MakeWktCircle(double x, double y, double r, bool bSimulate)
{
if (bSimulate)
{
StringBuilder fgfText = new StringBuilder("POLYGON ((");
for (var i = 0; i < 2 * simulateCircleHalfPointNumber + 1; i++)
{
if (i != 0)
{
fgfText.Append(", ");
}
fgfText.Append((x + r * simulateCirclePoints[2 * i]).ToString(CultureInfo.InvariantCulture));
fgfText.Append(" ");
fgfText.Append((y + r * simulateCirclePoints[2 * i + 1]).ToString(CultureInfo.InvariantCulture));
}
fgfText.Append("))");
return fgfText.ToString();
}
else
{
return "CURVEPOLYGON ((" + (x - r).ToString(CultureInfo.InvariantCulture) + " " + y.ToString(CultureInfo.InvariantCulture) + " (CIRCULARARCSEGMENT (" + x.ToString(CultureInfo.InvariantCulture) + " " + (y - r).ToString(CultureInfo.InvariantCulture) + ", " + (x + r).ToString(CultureInfo.InvariantCulture) + " " + y.ToString(CultureInfo.InvariantCulture) + "), CIRCULARARCSEGMENT (" + x.ToString(CultureInfo.InvariantCulture) + " " + (y + r).ToString(CultureInfo.InvariantCulture) + ", " + (x - r).ToString(CultureInfo.InvariantCulture) + " " + y.ToString(CultureInfo.InvariantCulture) + "))))"; //NOXLATE
}
}
public static string MakeWktPolygon(double x1, double y1, double x2, double y2)
{
string x1str = x1.ToString(CultureInfo.InvariantCulture);
string y1str = y1.ToString(CultureInfo.InvariantCulture);
string x2str = x2.ToString(CultureInfo.InvariantCulture);
string y2str = y2.ToString(CultureInfo.InvariantCulture);
return "POLYGON((" + x1str + " " + y1str + ", " + x2str + " " + y1str + ", " + x2str + " " + y2str + ", " + x1str + " " + y2str + ", " + x1str + " " + y1str + "))"; //NOXLATE
}
/// <summary>
/// Perform sprintf-style substitution of the given template with the given values.
/// </summary>
/// <param name="templ"></param>
/// <param name="vals"></param>
/// <returns></returns>
public static string Substitute(String templ, String[] vals)
{
StringBuilder res = new StringBuilder();
int index = 0, val = 0;
bool found;
do
{
found = false;
int i = templ.IndexOf('%', index);
if(i != -1)
{
found = true;
res.Append(templ.Substring(index, i - index));
if(i < templ.Length - 1)
{
if(templ[i+1] == '%')
res.Append('%');
else if(templ[i+1] == 's')
res.Append(vals[val ++]);
else
res.Append('@'); //add a character illegal in jscript so we know the template was incorrect
index = i + 2;
}
}
} while(found);
res.Append(templ.Substring(index));
return res.ToString();
}
public static string ToHtmlColor(Color color)
{
return String.Format("{0:X2}{1:X2}{2:X2}", color.R, color.G, color.B); //NOXLATE
}
public static string ToHtmlColorWithAlpha(Color color)
{
return String.Format("{0:X2}{1:X2}{2:X2}{3:X2}", color.A, color.R, color.G, color.B); //NOXLATE
}
public static Color FromHtmlColor(string html)
{
return FromHtmlColor(html, true);
}
public static Color FromHtmlColor(string html, bool keepAlpha)
{
//Replace alpha if discarding
if (!keepAlpha && html.Length == 8)
html = "FF" + html.Substring(2);
//Put stubbed alpha if missing
if (html.Length == 6)
html = "FF" + html;
int rgb = int.Parse(html, System.Globalization.NumberStyles.HexNumber);
return Color.FromArgb(rgb);
}
public static MgLayerBase FindLayer(MgLayerCollection layers, String layerName)
{
MgLayerBase layer = null;
int i = 0;
for (i = 0; i < layers.GetCount(); i++)
{
MgLayerBase layer1 = layers.GetItem(i);
if (layer1.GetName() == layerName)
{
layer = layer1;
break;
}
}
return layer;
}
public static string GetMapSrs(MgMapBase map)
{
try
{
String srs = map.GetMapSRS();
if (srs != string.Empty)
return srs;
}
catch (MgException)
{
}
//No SRS, set to ArbitrayXY meters
//
return "LOCALCS[\"Non-Earth (Meter)\",LOCAL_DATUM[\"Local Datum\",0],UNIT[\"Meter\", 1],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH]]"; //NOXLATE
}
public static void ClearDataSource(MgFeatureService featSvc, MgResourceIdentifier fsId, String featureName)
{
MgDeleteFeatures deleteCmd = new MgDeleteFeatures(featureName, "ID >= 0"); //NOXLATE
MgFeatureCommandCollection commands = new MgFeatureCommandCollection();
commands.Add(deleteCmd);
featSvc.UpdateFeatures(fsId, commands, false);
}
public static void ReleaseReader(MgPropertyCollection res, MgFeatureCommandCollection commands)
{
if (res == null)
return;
for (int i = 0; i < res.GetCount(); i++)
{
MgFeatureCommand cmd = commands.GetItem(i);
if (cmd is MgInsertFeatures)
{
MgFeatureProperty resProp = res.GetItem(i) as MgFeatureProperty;
if (resProp != null)
{
MgFeatureReader reader = resProp.GetValue() as MgFeatureReader;
if (reader == null)
return;
reader.Close();
}
}
}
}
public static void AddFeatureToCollection(MgBatchPropertyCollection propCollection, MgAgfReaderWriter agfRW, int featureId, MgGeometry featureGeom)
{
MgPropertyCollection bufferProps = new MgPropertyCollection();
MgInt32Property idProp = new MgInt32Property("ID", featureId); //NOXLATE
bufferProps.Add(idProp);
MgByteReader geomReader = agfRW.Write(featureGeom);
MgGeometryProperty geomProp = new MgGeometryProperty("GEOM", geomReader); //NOXLATE
bufferProps.Add(geomProp);
propCollection.Add(bufferProps);
}
public static String GetFeaturePropertyValue(MgReader featureReader, String propName)
{
String value = string.Empty;
int propertyType = featureReader.GetPropertyType(propName);
switch (propertyType)
{
case MgPropertyType.Boolean:
value = featureReader.GetBoolean(propName).ToString();
break;
case MgPropertyType.Byte:
value = featureReader.GetByte(propName).ToString();
break;
case MgPropertyType.Single:
value = featureReader.GetSingle(propName).ToString();
break;
case MgPropertyType.Double:
value = featureReader.GetDouble(propName).ToString();
break;
case MgPropertyType.Int16:
value = featureReader.GetInt16(propName).ToString();
break;
case MgPropertyType.Int32:
value = featureReader.GetInt32(propName).ToString();
break;
case MgPropertyType.Int64:
value = featureReader.GetInt64(propName).ToString();
break;
case MgPropertyType.String:
value = featureReader.GetString(propName);
break;
case MgPropertyType.DateTime:
case MgPropertyType.Null:
case MgPropertyType.Blob:
case MgPropertyType.Clob:
case MgPropertyType.Feature:
case MgPropertyType.Geometry:
case MgPropertyType.Raster:
value = Strings.StrUnsupportedDataType; //NOXLATE
break;
}
return value;
}
public static String MakeUniqueLayerName(MgMapBase map, String layerName, String themeName)
{
String desiredName = "_" + layerName + themeName; //NOXLATE
String uniqueName = desiredName;
int index = 1;
var layers = map.GetLayers();
while (layers.Contains(uniqueName))
{
uniqueName = desiredName + index.ToString();
index++;
}
return uniqueName;
}
public static String InterpolateColor(double portion, String startColor, String endColor, int percentTransparent)
{
int alpha = (int)(255 * (100.0 - percentTransparent) / 100.0);
String result = string.Empty;
if (startColor.Equals(endColor))
{
result = String.Format("{0:X2}{1}", alpha, startColor); //NOXLATE
}
else
{
int red = CalculateRGB(portion, startColor.Substring(0, 2), endColor.Substring(0, 2));
int green = CalculateRGB(portion, startColor.Substring(2, 2), endColor.Substring(2, 2));
int blue = CalculateRGB(portion, startColor.Substring(4, 2), endColor.Substring(4, 2));
result = String.Format("{0:X2}{1:X2}{2:X2}{3:X2}", alpha, red, green, blue); //NOXLATE
}
return result;
}
public static int CalculateRGB(double portion, String startRGB, String endRGB)
{
double result = Int32.Parse(startRGB, NumberStyles.HexNumber) + portion * (Int32.Parse(endRGB, NumberStyles.HexNumber) - Int32.Parse(startRGB, NumberStyles.HexNumber));
return (int)result;
}
}
}