/// <summary>
/// Initializes a new instance of the <c>RasterVariables</c> class.
/// </summary>
public RasterVariables()
: base(DxfObjectCode.RasterVariables)
{
this.displayFrame = true;
this.quality = ImageDisplayQuality.High;
this.units = ImageUnits.Unitless;
}
/// <summary>
/// Initializes a new instance of the <c>RasterVariables</c> class.
/// </summary>
public RasterVariables()
: base(DxfObjectCode.RasterVariables)
{
this.displayFrame = true;
this.quality = ImageDisplayQuality.High;
this.units = ImageUnits.Unitless;
}
internal RasterVariables(DxfDocument document)
: base(DxfObjectCode.RasterVariables)
{
this.displayFrame = true;
this.quality = ImageDisplayQuality.High;
this.units = ImageUnits.Unitless;
this.Owner = document;
}
private static DrawingUnits ImageToDrawingUnits(ImageUnits units)
{
// more on the DXF format none sense, they don't even use the same integers for the drawing and the image units
DrawingUnits rasterUnits;
switch (units)
{
case ImageUnits.Unitless:
rasterUnits = DrawingUnits.Unitless;
break;
case ImageUnits.Millimeters:
rasterUnits = DrawingUnits.Millimeters;
break;
case ImageUnits.Centimeters:
rasterUnits = DrawingUnits.Centimeters;
break;
case ImageUnits.Meters:
rasterUnits = DrawingUnits.Meters;
break;
case ImageUnits.Kilometers:
rasterUnits = DrawingUnits.Kilometers;
break;
case ImageUnits.Inches:
rasterUnits = DrawingUnits.Inches;
break;
case ImageUnits.Feet:
rasterUnits = DrawingUnits.Feet;
break;
case ImageUnits.Yards:
rasterUnits = DrawingUnits.Yards;
break;
case ImageUnits.Miles:
rasterUnits = DrawingUnits.Miles;
break;
default:
rasterUnits = DrawingUnits.Unitless;
break;
}
return(rasterUnits);
}
/// <summary>
/// Gets the conversion factor between image and drawing units.
/// </summary>
/// <param name="from">Original image units.</param>
/// <param name="to">Destination drawing units.</param>
/// <returns>The conversion factor between the units.</returns>
public static double ConversionFactor(ImageUnits from, DrawingUnits to)
{
// more on the dxf format none sense, they don't even use the same integers for the drawing and the image units
int rasterUnits = 0;
switch (from)
{
case ImageUnits.Unitless:
rasterUnits = 0;
break;
case ImageUnits.Millimeters:
rasterUnits = 4;
break;
case ImageUnits.Centimeters:
rasterUnits = 5;
break;
case ImageUnits.Meters:
rasterUnits = 6;
break;
case ImageUnits.Kilometers:
rasterUnits = 7;
break;
case ImageUnits.Inches:
rasterUnits = 1;
break;
case ImageUnits.Feet:
rasterUnits = 2;
break;
case ImageUnits.Yards:
rasterUnits = 10;
break;
case ImageUnits.Miles:
rasterUnits = 3;
break;
}
return(UnitFactors[rasterUnits, (int)to]);
}
/// <summary>
/// Gets the conversion factor between units.
/// </summary>
/// <param name="from">Original value units.</param>
/// <param name="to">Destination value units.</param>
/// <returns>The conversion factor between the passed units.</returns>
public static double ConversionFactor(DrawingUnits from, ImageUnits to)
{
return(1 / ConversionFactor(to, from));
}
/// <summary>
/// Gets the conversion factor between units.
/// </summary>
/// <param name="from">Original value units.</param>
/// <param name="to">Destination value units.</param>
/// <returns>The conversion factor between the passed units.</returns>
public static double ConversionFactor(DrawingUnits from, ImageUnits to)
{
return 1/ConversionFactor(to, from);
}
/// <summary>
/// Gets the conversion factor between image and drawing units.
/// </summary>
/// <param name="from">Original image units.</param>
/// <param name="to">Destination drawing units.</param>
/// <returns>The conversion factor between the units.</returns>
public static double ConversionFactor(ImageUnits from, DrawingUnits to)
{
// more on the dxf format none sense, they don't even use the same integers for the drawing and the image units
int rasterUnits = 0;
switch (from)
{
case ImageUnits.Unitless:
rasterUnits = 0;
break;
case ImageUnits.Millimeters:
rasterUnits = 4;
break;
case ImageUnits.Centimeters:
rasterUnits = 5;
break;
case ImageUnits.Meters:
rasterUnits = 6;
break;
case ImageUnits.Kilometers:
rasterUnits = 7;
break;
case ImageUnits.Inches:
rasterUnits = 1;
break;
case ImageUnits.Feet:
rasterUnits = 2;
break;
case ImageUnits.Yards:
rasterUnits = 10;
break;
case ImageUnits.Miles:
rasterUnits = 3;
break;
}
return UnitFactors[rasterUnits, (int)to];
}
/// <summary>
/// Gets the conversion factor between units.
/// </summary>
/// <param name="from">Original value units.</param>
/// <param name="to">Destination value units.</param>
/// <returns>The conversion factor between the passed units.</returns>
public static double ConversionFactor(DrawingUnits from, ImageUnits to)
{
return(ConversionFactor(from, ImageToDrawingUnits(to)));
}
