|
public GetColor ( float pos ) : |
||
| pos | float | Position on scale between 0.0f and 1.0f |
| Результат | ||
/// <summary>
/// Calculates the style for the gradient Theme. Use the constructor when all values are known because
/// it will also update the symbol (bitmap).
/// </summary>
/// <param name="min"></param>
/// <param name="max"></param>
/// <param name="value"></param>
/// <returns></returns>
protected VectorStyle CalculateVectorStyle(VectorStyle min, VectorStyle max, double value)
{
//var style = new VectorStyle();
double dFrac = Fraction(value);
float fFrac = Convert.ToSingle(dFrac);
//bool enabled = (dFrac > 0.5 ? min.Enabled : max.Enabled);
bool enableOutline = (dFrac > 0.5 ? min.EnableOutline : max.EnableOutline);
Brush fillStyle = null;
if (fillColorBlend != null)
{
fillStyle = new SolidBrush(fillColorBlend.GetColor(fFrac));
}
else if (min.Fill != null && max.Fill != null)
{
fillStyle = InterpolateBrush(min.Fill, max.Fill, value);
}
Pen lineStyle;
if (lineColorBlend != null)
{
lineStyle = new Pen(lineColorBlend.GetColor(fFrac), InterpolateFloat(min.Line.Width, max.Line.Width, value));
}
else
{
lineStyle = InterpolatePen(min.Line, max.Line, value);
}
// assume line and outline same for gradient theme
Pen outLineStyle = null;
if (min.Outline != null && max.Outline != null)
{
outLineStyle = InterpolatePen(min.Outline, max.Outline, value);
}
ShapeType shapeType = min.Shape;
float symbolScale = InterpolateFloat(min.SymbolScale, max.SymbolScale, value);
Type geometryType = min.GeometryType;
int shapeSize = InterpolateInt(min.ShapeSize, max.ShapeSize, value);
var style = new VectorStyle(fillStyle, outLineStyle, enableOutline, lineStyle, symbolScale, geometryType, shapeType, shapeSize)
{
MinVisible = InterpolateDouble(min.MinVisible, max.MinVisible, value),
MaxVisible = InterpolateDouble(min.MaxVisible, max.MaxVisible, value),
Enabled = (dFrac > 0.5 ? min.Enabled : max.Enabled)
};
return(style);
}
/// <summary>
/// Creates a <see cref="GradientTheme"/>
/// </summary>
/// <param name="attribute">Name of the feature attribute</param>
/// <param name="defaultStyle">Default <see cref="VectorStyle"/> to base this theme on</param>
/// <param name="blend"><see cref="ColorBlend"/>
/// defining the min and max colors
/// Note: Silently assumes 2 Colors defined
/// </param>
/// <param name="minValue">Minimum value of the feature attribute values</param>
/// <param name="maxValue">Maximum value of the feature attribute values</param>
/// <param name="sizeMin">Minimum line/point size in pixels</param>
/// <param name="sizeMax">Maximum line/point size in pixels</param>
/// <param name="skipColors">Use the min and max colors (false) or the defaultStyle fill color (true)</param>
/// <param name="skipSizes">Let the size of a point depend on the value (false) or use the defaultStyle size (true)</param>
/// <param name="numberOfClasses">The number of classes (ThemeItems) to generate (default = 8)</param>
/// <returns>A new <see cref="GradientTheme"/></returns>
public static GradientTheme CreateGradientTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
double minValue, double maxValue, int sizeMin, int sizeMax, bool skipColors, bool skipSizes, int numberOfClasses = 8)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle {
GeometryType = typeof(IPolygon)
};
}
Color minColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(0);
Color maxColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(1);
var deltaWidth = (defaultStyle.Outline.Width - defaultStyle.Line.Width);
float minOutlineSize = deltaWidth + sizeMin;
float maxOutlineSize = deltaWidth + sizeMax;
// Use default styles if not working with VectorLayers (i.e. RegularGridCoverageLayers)
var minStyle = (VectorStyle)defaultStyle.Clone();
var maxStyle = (VectorStyle)defaultStyle.Clone();
minStyle.GeometryType = defaultStyle.GeometryType;
maxStyle.GeometryType = defaultStyle.GeometryType;
if (defaultStyle.GeometryType == typeof(IPoint))
{
UpdateMinMaxForPoints(defaultStyle, sizeMin, sizeMax, minStyle, maxStyle, minColor, maxColor, skipSizes);
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
UpdateMinMaxForPolygons(defaultStyle, minStyle, maxStyle, minColor, maxColor, minOutlineSize, maxOutlineSize);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
UpdateMinMaxForLineStrings(defaultStyle, sizeMin, sizeMax, minStyle, maxStyle, minColor, maxColor, minOutlineSize, maxOutlineSize, skipSizes);
}
else
{
//use for unknown geometry..
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = CreatePen(minColor, minOutlineSize, defaultStyle.Outline);
maxStyle.Outline = CreatePen(maxColor, maxOutlineSize, defaultStyle.Outline);
}
return(new GradientTheme(attribute, minValue, maxValue, minStyle, maxStyle, blend, blend, null, numberOfClasses));
}
/// <summary>
/// Creates a <see cref="GradientTheme"/>
/// </summary>
/// <param name="attribute">Name of the feature attribute</param>
/// <param name="defaultStyle">Default <see cref="VectorStyle"/> to base this theme on</param>
/// <param name="blend"><see cref="ColorBlend"/>
/// defining the min and max colors
/// Note: Silently assumes 2 Colors defined
/// </param>
/// <param name="minValue">Minimum value of the feature attribute values</param>
/// <param name="maxValue">Maximum value of the feature attribute values</param>
/// <param name="sizeMin">Minimum line/point size in pixels</param>
/// <param name="sizeMax">Maximum line/point size in pixels</param>
/// <param name="skipColors">Use the min and max colors (false) or the defaultStyle fill color (true)</param>
/// <param name="skipSizes">Let the size of a point depend on the value (false) or use the defaultStyle size (true)</param>
/// <param name="numberOfClasses">The number of classes (ThemeItems) to generate (default = 8)</param>
/// <returns>A new <see cref="GradientTheme"/></returns>
public static GradientTheme CreateGradientTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
double minValue, double maxValue, int sizeMin, int sizeMax, bool skipColors, bool skipSizes, int numberOfClasses = 8)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle { GeometryType = typeof(IPolygon) };
}
Color minColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(0);
Color maxColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(1);
var deltaWidth = (defaultStyle.Outline.Width - defaultStyle.Line.Width);
float minOutlineSize = deltaWidth + sizeMin;
float maxOutlineSize = deltaWidth + sizeMax;
// Use default styles if not working with VectorLayers (i.e. RegularGridCoverageLayers)
var minStyle = (VectorStyle)defaultStyle.Clone();
var maxStyle = (VectorStyle)defaultStyle.Clone();
minStyle.GeometryType = defaultStyle.GeometryType;
maxStyle.GeometryType = defaultStyle.GeometryType;
if (defaultStyle.GeometryType == typeof(IPoint))
{
UpdateMinMaxForPoints(defaultStyle, sizeMin, sizeMax, minStyle, maxStyle, minColor, maxColor, skipSizes);
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
UpdateMinMaxForPolygons(defaultStyle, minStyle, maxStyle, minColor, maxColor, minOutlineSize, maxOutlineSize);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
UpdateMinMaxForLineStrings(defaultStyle, sizeMin, sizeMax, minStyle, maxStyle, minColor, maxColor, minOutlineSize, maxOutlineSize, skipSizes);
}
else
{
//use for unknown geometry..
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = CreatePen(minColor, minOutlineSize, defaultStyle.Outline);
maxStyle.Outline = CreatePen(maxColor, maxOutlineSize, defaultStyle.Outline);
}
return new GradientTheme(attribute, minValue, maxValue, minStyle, maxStyle, blend, blend, null, numberOfClasses);
}
public static CategorialTheme CreateCategorialTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
int numberOfClasses, IList <IComparable> values, List <string> categories, int sizeMin, int sizeMax)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle
{
GeometryType = typeof(IPolygon)
};
}
var categorialTheme = new CategorialTheme(attribute, defaultStyle);
for (int i = 0; i < numberOfClasses; i++)
{
string label = (categories != null)
? categories[i]
: values[i].ToString();
Color color = (numberOfClasses > 1)
? blend.GetColor((float)i / (numberOfClasses - 1))
: ((SolidBrush)defaultStyle.Fill).Color;
var vectorStyle = (VectorStyle)defaultStyle.Clone();
var size = sizeMin + (sizeMax - sizeMin) * i / (float)numberOfClasses;
if (defaultStyle.GeometryType == typeof(IPoint))
{
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Line.Width = 16;
vectorStyle.Shape = defaultStyle.Shape;
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
vectorStyle.Fill = new SolidBrush(color);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
}
else
{
vectorStyle.Fill = new SolidBrush(color);
}
CategorialThemeItem categorialThemeItem = (values[i] != null)
? new CategorialThemeItem(label, vectorStyle, vectorStyle.LegendSymbol, values[i])
: new CategorialThemeItem(label, vectorStyle, vectorStyle.LegendSymbol);
categorialTheme.AddThemeItem(categorialThemeItem);
}
return(categorialTheme);
}
/// <summary>
/// Function to compute a new <see cref="VectorStyle">style</see> for the given <paramref name="value"/>
/// </summary>
/// <param name="min">The minimum <see cref="VectorStyle">style</see></param>
/// <param name="max">The maximum <see cref="VectorStyle">style</see></param>
/// <param name="value">The value</param>
/// <returns>A <see cref="VectorStyle">style</see></returns>
protected VectorStyle CalculateVectorStyle(VectorStyle min, VectorStyle max, double value)
{
var style = new VectorStyle();
double dFrac = Fraction(value);
float fFrac = Convert.ToSingle(dFrac);
style.Enabled = (dFrac > 0.5 ? min.Enabled : max.Enabled);
style.EnableOutline = (dFrac > 0.5 ? min.EnableOutline : max.EnableOutline);
style.VisibilityUnits = min.VisibilityUnits;
if (_fillColorBlend != null)
{
style.Fill = new SolidBrush(_fillColorBlend.GetColor(fFrac));
}
else if (min.Fill != null && max.Fill != null)
{
style.Fill = InterpolateBrush(min.Fill, max.Fill, value);
}
if (min.Line != null && max.Line != null)
{
style.Line = InterpolatePen(min.Line, max.Line, value);
}
if (_lineColorBlend != null)
{
style.Line.Color = _lineColorBlend.GetColor(fFrac);
}
if (min.Outline != null && max.Outline != null)
{
style.Outline = InterpolatePen(min.Outline, max.Outline, value);
}
style.MinVisible = InterpolateDouble(min.MinVisible, max.MinVisible, value);
style.MaxVisible = InterpolateDouble(min.MaxVisible, max.MaxVisible, value);
style.Symbol = (dFrac > 0.5 ? min.Symbol : max.Symbol);
style.SymbolOffset = (dFrac > 0.5 ? min.SymbolOffset : max.SymbolOffset);
//We don't interpolate the offset but let it follow the symbol instead
style.SymbolScale = InterpolateFloat(min.SymbolScale, max.SymbolScale, value);
return(style);
}
public static QuantityTheme CreateQuantityTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
int numberOfClasses, IList <Interval> intervals, float minSize, float maxSize, bool skipColors, bool skipSizes)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle();
defaultStyle.GeometryType = typeof(IPolygon);
}
var quantityTheme = new QuantityTheme(attribute, defaultStyle);
var totalMinValue = (float)intervals[0].Min;
var totalMaxValue = (float)intervals[intervals.Count - 1].Max;
if (totalMinValue == totalMaxValue)
{
return(null);
}
for (int i = 0; i < numberOfClasses; i++)
{
Color color = numberOfClasses > 1
? blend.GetColor(1 - (float)i / (numberOfClasses - 1))
: ((SolidBrush)defaultStyle.Fill).Color;
float size = defaultStyle.Line.Width;
if (!skipSizes)
{
var minValue = (float)intervals[i].Min;
var maxValue = (float)intervals[i].Max;
float width = maxValue - minValue;
float mean = minValue + 0.5f * width;
float fraction = (mean - totalMinValue) / (totalMaxValue - totalMinValue);
size = minSize + fraction * (maxSize - minSize);
}
var vectorStyle = new VectorStyle
{
GeometryType = defaultStyle.GeometryType
};
if (defaultStyle.GeometryType == typeof(IPoint))
{
if (skipColors)
{
color = ((SolidBrush)defaultStyle.Fill).Color;
}
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Shape = defaultStyle.Shape;
if (!skipSizes)
{
vectorStyle.ShapeSize = Convert.ToInt32(size);
vectorStyle.Line.Width = size;
}
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
if (skipColors)
{
color = ((SolidBrush)defaultStyle.Fill).Color;
}
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
vectorStyle.Outline.Width = (defaultStyle.Outline.Width - defaultStyle.Line.Width) + size;
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
if (skipColors)
{
color = defaultStyle.Line.Color;
}
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
vectorStyle.Outline.Width = (defaultStyle.Outline.Width - defaultStyle.Line.Width) + size;
}
else
{
vectorStyle.Fill = new SolidBrush(color);
}
quantityTheme.AddStyle(vectorStyle, intervals[i]);
}
return(quantityTheme);
}
public static QuantityTheme CreateQuantityTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
int numberOfClasses, IList<Interval> intervals, float minSize, float maxSize, bool skipColors, bool skipSizes)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle();
defaultStyle.GeometryType = typeof(IPolygon);
}
var quantityTheme = new QuantityTheme(attribute, defaultStyle);
var totalMinValue = (float) intervals[0].Min;
var totalMaxValue = (float) intervals[intervals.Count - 1].Max;
if (totalMinValue == totalMaxValue)
{
return null;
}
for (int i = 0; i < numberOfClasses; i++)
{
Color color = numberOfClasses > 1
? blend.GetColor(1 - (float) i/(numberOfClasses - 1))
: ((SolidBrush) defaultStyle.Fill).Color;
float size = defaultStyle.Line.Width;
if (!skipSizes)
{
var minValue = (float) intervals[i].Min;
var maxValue = (float) intervals[i].Max;
float width = maxValue - minValue;
float mean = minValue + 0.5f * width;
float fraction = (mean - totalMinValue) / (totalMaxValue - totalMinValue);
size = minSize + fraction * (maxSize - minSize);
}
var vectorStyle = new VectorStyle
{
GeometryType = defaultStyle.GeometryType
};
if (defaultStyle.GeometryType == typeof(IPoint))
{
if (skipColors)
{
color = ((SolidBrush)defaultStyle.Fill).Color;
}
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Shape = defaultStyle.Shape;
if (!skipSizes)
{
vectorStyle.ShapeSize = Convert.ToInt32(size);
vectorStyle.Line.Width = size;
}
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
if (skipColors)
{
color = ((SolidBrush)defaultStyle.Fill).Color;
}
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
vectorStyle.Outline.Width = (defaultStyle.Outline.Width - defaultStyle.Line.Width) + size;
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
if (skipColors)
{
color = defaultStyle.Line.Color;
}
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
vectorStyle.Outline.Width = (defaultStyle.Outline.Width - defaultStyle.Line.Width) + size;
}
else
{
vectorStyle.Fill = new SolidBrush(color);
}
quantityTheme.AddStyle(vectorStyle, intervals[i]);
}
return quantityTheme;
}
public static CategorialTheme CreateCategorialTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
int numberOfClasses, IList<IComparable> values, List<string> categories, int sizeMin, int sizeMax)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle
{
GeometryType = typeof (IPolygon)
};
}
var categorialTheme = new CategorialTheme(attribute, defaultStyle);
for (int i = 0; i < numberOfClasses; i++)
{
string label = (categories != null)
? categories[i]
: values[i].ToString();
Color color = (numberOfClasses > 1)
? blend.GetColor((float) i/(numberOfClasses - 1))
: ((SolidBrush) defaultStyle.Fill).Color;
var vectorStyle = (VectorStyle) defaultStyle.Clone();
var size = sizeMin + (sizeMax - sizeMin)*i/(float) numberOfClasses;
if (defaultStyle.GeometryType == typeof(IPoint))
{
vectorStyle.Fill = new SolidBrush(color);
vectorStyle.Line.Width = 16;
vectorStyle.Shape = defaultStyle.Shape;
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
vectorStyle.Fill = new SolidBrush(color);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
vectorStyle.Line = CreatePen(color, size, defaultStyle.Line);
}
else
{
vectorStyle.Fill = new SolidBrush(color);
}
CategorialThemeItem categorialThemeItem = (values[i] != null)
? new CategorialThemeItem(label, vectorStyle, vectorStyle.LegendSymbol, values[i])
: new CategorialThemeItem(label, vectorStyle, vectorStyle.LegendSymbol);
categorialTheme.AddThemeItem(categorialThemeItem);
}
return categorialTheme;
}
/// <summary>
/// Calculates the style for the gradient Theme. Use the constructor when all values are known because
/// it will also update the symbol (bitmap).
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
protected VectorStyle CalculateVectorStyle(double value)
{
var min = (VectorStyle)MinStyle;
var max = (VectorStyle)MaxStyle;
double dFrac = Fraction(value);
//There are some theoretical issues with this caching if the number of color transitions is high
//(and non-smooth). However, for all intents and purposes this approach will be visually equal
//to non-cached styling.
const int numberOfCachedStyles = 512;
int cacheIndex = (int)(dFrac * numberOfCachedStyles);
if (vectorStyleCache.ContainsKey(cacheIndex))
{
return(vectorStyleCache[cacheIndex]);
}
float fFrac = Convert.ToSingle(dFrac);
//bool enabled = (dFrac > 0.5 ? min.Enabled : max.Enabled);
bool enableOutline = (dFrac > 0.5 ? min.EnableOutline : max.EnableOutline);
Brush fillStyle = null;
if (fillColorBlend != null)
{
fillStyle = new SolidBrush(fillColorBlend.GetColor(fFrac));
}
else if (min.Fill != null && max.Fill != null)
{
fillStyle = InterpolateBrush(min.Fill, max.Fill, value);
}
Pen lineStyle;
if (lineColorBlend != null)
{
lineStyle = new Pen(lineColorBlend.GetColor(fFrac), InterpolateFloat(min.Line.Width, max.Line.Width, value));
}
else
{
lineStyle = InterpolatePen(min.Line, max.Line, value);
}
// assume line and outline same for gradient theme
Pen outLineStyle = null;
if (min.Outline != null && max.Outline != null)
{
outLineStyle = InterpolatePen(min.Outline, max.Outline, value);
}
ShapeType shapeType = min.Shape;
float symbolScale = InterpolateFloat(min.SymbolScale, max.SymbolScale, value);
Type geometryType = min.GeometryType;
int shapeSize = InterpolateInt(min.ShapeSize, max.ShapeSize, value);
var style = new VectorStyle(fillStyle, outLineStyle, enableOutline, lineStyle, symbolScale, geometryType, shapeType, shapeSize)
{
MinVisible = InterpolateDouble(min.MinVisible, max.MinVisible, value),
MaxVisible = InterpolateDouble(min.MaxVisible, max.MaxVisible, value),
Enabled = (dFrac > 0.5 ? min.Enabled : max.Enabled),
Line =
{
StartCap = min.Line.StartCap,
EndCap = min.Line.EndCap
}
};
vectorStyleCache[cacheIndex] = style;
return(style);
}
public static GradientTheme CreateGradientTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
float minValue, float maxValue, int sizeMin, int sizeMax, bool skipColors, bool skipSizes, int numberOfClasses)
{
if (defaultStyle == null)
{
defaultStyle = new VectorStyle();
defaultStyle.GeometryType = typeof(IPolygon);
}
Color minColor = (skipColors)? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(0);
Color maxColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(1);
var deltaWith = (defaultStyle.Outline.Width - defaultStyle.Line.Width);
float minOutlineSize = deltaWith + sizeMin;
float maxOutlineSize = deltaWith + sizeMax;
// Use default styles if not working with VectorLayers (i.e. RegularGridCoverageLayers)
var minStyle = (VectorStyle)defaultStyle.Clone();
var maxStyle = (VectorStyle)defaultStyle.Clone();
minStyle.GeometryType = defaultStyle.GeometryType;
maxStyle.GeometryType = defaultStyle.GeometryType;
if (defaultStyle.GeometryType == typeof(IPoint))
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Shape = defaultStyle.Shape;
maxStyle.Shape = defaultStyle.Shape;
if (!skipSizes)
{
minStyle.Line.Width = sizeMin;
maxStyle.Line.Width = sizeMax;
minStyle.ShapeSize = sizeMin;
maxStyle.ShapeSize = sizeMax;
}
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = new Pen(defaultStyle.Outline.Color, minOutlineSize);
maxStyle.Outline = new Pen(defaultStyle.Outline.Color, maxOutlineSize);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
minStyle.Line = new Pen(minColor, sizeMin);
maxStyle.Line = new Pen(maxColor, sizeMax);
minStyle.Outline = new Pen(defaultStyle.Outline.Color, minOutlineSize);
maxStyle.Outline = new Pen(defaultStyle.Outline.Color, maxOutlineSize);
}
else
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = new Pen(minColor, minOutlineSize);
maxStyle.Outline = new Pen(maxColor, maxOutlineSize);
}
var gradientTheme = new GradientTheme(attribute, minValue, maxValue, minStyle, maxStyle, blend, blend, null, numberOfClasses);
return(gradientTheme);
}
public static GradientTheme CreateGradientTheme(string attribute, VectorStyle defaultStyle, ColorBlend blend,
float minValue, float maxValue, int sizeMin, int sizeMax, bool skipColors, bool skipSizes, int numberOfClasses)
{
if(defaultStyle == null)
{
defaultStyle = new VectorStyle();
defaultStyle.GeometryType = typeof(IPolygon);
}
Color minColor = (skipColors)? ((SolidBrush) defaultStyle.Fill).Color : blend.GetColor(0);
Color maxColor = (skipColors) ? ((SolidBrush)defaultStyle.Fill).Color : blend.GetColor(1);
var deltaWith = (defaultStyle.Outline.Width - defaultStyle.Line.Width);
float minOutlineSize = deltaWith + sizeMin;
float maxOutlineSize = deltaWith + sizeMax;
// Use default styles if not working with VectorLayers (i.e. RegularGridCoverageLayers)
var minStyle = (VectorStyle) defaultStyle.Clone();
var maxStyle = (VectorStyle) defaultStyle.Clone();
minStyle.GeometryType = defaultStyle.GeometryType;
maxStyle.GeometryType = defaultStyle.GeometryType;
if (defaultStyle.GeometryType == typeof(IPoint))
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Shape = defaultStyle.Shape;
maxStyle.Shape = defaultStyle.Shape;
if (!skipSizes)
{
minStyle.Line.Width = sizeMin;
maxStyle.Line.Width = sizeMax;
minStyle.ShapeSize = sizeMin;
maxStyle.ShapeSize = sizeMax;
}
}
else if ((defaultStyle.GeometryType == typeof(IPolygon)) || (defaultStyle.GeometryType == typeof(IMultiPolygon)))
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = new Pen(defaultStyle.Outline.Color, minOutlineSize);
maxStyle.Outline = new Pen(defaultStyle.Outline.Color, maxOutlineSize);
}
else if ((defaultStyle.GeometryType == typeof(ILineString)) || (defaultStyle.GeometryType == typeof(IMultiLineString)))
{
minStyle.Line = new Pen(minColor, sizeMin);
maxStyle.Line = new Pen(maxColor, sizeMax);
minStyle.Outline = new Pen(defaultStyle.Outline.Color, minOutlineSize);
maxStyle.Outline = new Pen(defaultStyle.Outline.Color, maxOutlineSize);
}
else
{
minStyle.Fill = new SolidBrush(minColor);
maxStyle.Fill = new SolidBrush(maxColor);
minStyle.Outline = new Pen(minColor, minOutlineSize);
maxStyle.Outline = new Pen(maxColor, maxOutlineSize);
}
var gradientTheme = new GradientTheme(attribute, minValue, maxValue, minStyle, maxStyle, blend, blend, null, numberOfClasses);
return gradientTheme;
}