public static NonUniformRationalBSpline NonUniformRationalBSpline(MetafileReader reader)
{
int splineOrder = reader.ReadInteger();
int numberOfControlPoints = reader.ReadInteger();
var controlPoints = new List <PointF>();
for (int i = 0; i < numberOfControlPoints; i++)
{
controlPoints.Add(reader.ReadPoint());
}
var knots = new List <double>();
for (int i = 0; i < splineOrder + numberOfControlPoints; i++)
{
knots.Add(reader.ReadReal());
}
double start = reader.ReadReal();
double end = reader.ReadReal();
var weights = new List <double>();
for (int i = 0; i < numberOfControlPoints; i++)
{
weights.Add(reader.ReadReal());
}
return(new NonUniformRationalBSpline(splineOrder, controlPoints.ToArray(), knots.ToArray(), start, end, weights.ToArray()));
}
public static CellArray CellArray(MetafileReader reader)
{
var p = reader.ReadPoint();
var q = reader.ReadPoint();
var r = reader.ReadPoint();
int nx = reader.ReadInteger();
int ny = reader.ReadInteger();
// TODO: not really used in text encoding; but in case we ever need it,
// the same check for zero as in binary encoding needs to happen.
// intentionally unused until that time comes.
int localColorPrecision = reader.ReadInteger();
int totalCount = nx * ny;
var colors = new List <MetafileColor>();
while (reader.HasMoreData())
{
colors.Add(reader.ReadColor());
}
// FIXME: for parenthesized lists, every row is enclosed by parenthesis (which right now are ignored by the parser).
// The number of cells between parentheses shall be less than or equal to the row length.
// If a row is not complete, then the last defined cell in the row is replicated to fill the row.
// Since the parser ignores parenthesis, we can only fill the last row with the last color of all rows;
// but not every row with the last color of each row.
if (colors.Count < totalCount)
{
var lastColor = colors.Last();
colors.AddRange(Enumerable.Range(0, totalCount - colors.Count).Select(i => lastColor));
}
return(new CellArray(p, q, r, nx, ny, colors.ToArray()));
}
public static HatchStyleDefinition HatchStyleDefinition(MetafileReader reader)
{
int hatchIndex = reader.ReadIndex();
HatchStyleIndicator styleIndicator = ParseHatchStyleIndicator(reader.ReadEnum());
double hatchDirectionStartX = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
double hatchDirectionStartY = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
double hatchDirectionEndX = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
double hatchDirectionEndY = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
double dutyCycleLength = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
int n = reader.ReadInteger();
var gapWidths = new List <int>();
for (int i = 0; i < n; i++)
{
gapWidths.Add(reader.ReadInteger());
}
var lineTypes = new List <int>();
for (int i = 0; i < n; i++)
{
lineTypes.Add(reader.ReadInteger());
}
return(new HatchStyleDefinition(hatchIndex, styleIndicator,
new PointF((float)hatchDirectionStartX, (float)hatchDirectionStartY),
new PointF((float)hatchDirectionEndX, (float)hatchDirectionEndY),
dutyCycleLength, gapWidths.ToArray(), lineTypes.ToArray()));
}
public static BeginTileArray BeginTileArray(MetafileReader reader)
{
return(new BeginTileArray(
reader.ReadPoint(),
ParseCellPathDirection(reader.ReadEnum()),
ParseLineProgressionDirection(reader.ReadEnum()),
reader.ReadInteger(), reader.ReadInteger(),
reader.ReadInteger(), reader.ReadInteger(),
reader.ReadReal(), reader.ReadReal(),
reader.ReadInteger(), reader.ReadInteger(),
reader.ReadInteger(), reader.ReadInteger()));
}
public static PatternTable PatternTable(MetafileReader reader)
{
int index = reader.ReadIndex();
int nx = reader.ReadInteger();
int ny = reader.ReadInteger();
// TODO: not really used in text encoding; but in case we ever need it,
// the same check for zero as in binary encoding needs to happen.
// intentionally unused until that time comes.
int localColorPrecision = reader.ReadInteger();
var colors = new List <MetafileColor>();
int count = nx * ny;
while (reader.HasMoreData(3) && count-- > 0)
{
colors.Add(reader.ReadColor());
}
return(new PatternTable(index, nx, ny, colors.ToArray()));
}
public static InterpolatedInterior InterpolatedInterior(MetafileReader reader)
{
int style = reader.ReadIndex();
var referenceGeometry = new List <PointF>();
var stageDesignators = new List <double>();
var colorSpecifiers = new List <MetafileColor>();
// Legal values of the style parameter are positive integers. [ISO/IEC 8632-1 7.7.43]
// Values greater than 3 are reserved for future standardization and registration.
if (style >= 1 && style <= 3)
{
// parallel: the number of scalars shall be 2. The FILL REFERENCE POINT is one defining
// point of a reference line. A second defining point of the reference line is defined by
// the 2 scalars, which are respectively the x and y offset of the second point from the
// FILL REFERENCE POINT.
// elliptical: the number of scalars shall be 4. The FILL REFERENCE POINT is the centre of a
// reference ellipse. The first pair of scalars are respectively the x and y offset from
// the FILL REFERENCE POINT to the first CDP of ellipse and the second pair are
// respectively the x and y offset from the FILL REFERENCE POINT to the second
// CDP of ellipse.
// triangular: the number of scalars shall be 4. The first pair of scalars are respectively the x and
// y offset from the FILL REFERENCE POINT to the second corner of a reference
// triangle and the second pair are respectively the x and y offset from the FILL
// REFERENCE POINT to the third corner of the reference triangle. The number of
// stages shall be 0 and the list of stage designators shall be empty.
int geoCount;
if (style == 1)
{
geoCount = 2;
}
else
{
geoCount = 4;
}
for (int i = 0; i < geoCount / 2; i++)
{
double rgX = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
double rgY = reader.ReadSizeSpecification(reader.Descriptor.InteriorStyleSpecificationMode);
referenceGeometry.Add(new PointF((float)rgX, (float)rgY));
}
int numberOfStages = reader.ReadInteger();
for (int i = 0; i < numberOfStages; i++)
{
stageDesignators.Add(reader.ReadReal());
}
int numberOfColors = style == 3 ? 3 : numberOfStages + 1;
for (int i = 0; i < numberOfColors; i++)
{
colorSpecifiers.Add(reader.ReadColor());
}
}
return(new InterpolatedInterior(style, referenceGeometry.ToArray(), stageDesignators.ToArray(), colorSpecifiers.ToArray()));
}
public static LineAndEdgeTypeDefinition LineAndEdgeTypeDefinition(MetafileReader reader)
{
int lineType = reader.ReadIndex();
double dashCycleRepeatLength = reader.ReadSizeSpecification(reader.Descriptor.LineWidthSpecificationMode);
var dashElements = new List <int>();
while (reader.HasMoreData())
{
dashElements.Add(reader.ReadInteger());
}
return(new LineAndEdgeTypeDefinition(lineType, dashCycleRepeatLength, dashElements.ToArray()));
}
public static FontProperties FontProperties(MetafileReader reader)
{
var properties = new List <FontProperty>();
while (reader.HasMoreData())
{
int propertyIndicator = reader.ReadIndex();
int priority = reader.ReadInteger();
// The SDR for each of the standardized properties contains only one member (typed sequence) [ISO/IEC 8632-1 7.3.21]
var record = ApplicationStructureDescriptorReader.ParseStructuredDataRecord(reader.ReadString());
properties.Add(new FontProperty(propertyIndicator, priority, record.Elements.First()));
}
return(new FontProperties(properties.ToArray()));
}
public static VdcRealPrecision VdcRealPrecision(MetafileReader reader)
{
double minValue = reader.ReadReal();
double maxValue = reader.ReadReal();
// assume floating point; with their respective values from the binary encoding (also ANSI/IEEE 754 stuff)
int exponentWidth = 12;
int fractionWidth = 52;
if ((float)minValue >= float.MinValue && (float)maxValue <= float.MaxValue)
{
exponentWidth = 9;
fractionWidth = 23;
}
// TODO: same as MetafileDescriptorReader.RealPrecision
int significantDigits = reader.ReadInteger();
return(new VdcRealPrecision(RealRepresentation.FloatingPoint, exponentWidth, fractionWidth));
}
public static RealPrecision RealPrecision(MetafileReader reader)
{
double minValue = reader.ReadReal();
double maxValue = reader.ReadReal();
// assume floating point; with their respective values from the binary encoding (also ANSI/IEEE 754 stuff)
int exponentWidth = 12;
int fractionWidth = 52;
if ((float)minValue >= float.MinValue && (float)maxValue <= float.MaxValue)
{
exponentWidth = 9;
fractionWidth = 23;
}
// TODO: unless writing metafiles, we probably don't really care about the number of significant digits
// at least we don't for reading, and unless we should, we'll just ignore it here (intentionally unused)
int significantDigits = reader.ReadInteger();
return(new RealPrecision(RealRepresentation.FloatingPoint, exponentWidth, fractionWidth));
}
public static EscapeCommand Escape(MetafileReader reader)
{
int identifier = reader.ReadInteger();
string dataRecordString = reader.ReadString();
// attempt to parse the data record as structured record, in case it is a known one
// otherwise it is probably application specific and cannot be assumed to be a structured record
StructuredDataRecord dataRecord;
if (EscapeCommand.KnownEscapeTypes.ContainsKey(identifier))
{
dataRecord = ApplicationStructureDescriptorReader.ParseStructuredDataRecord(dataRecordString);
}
else
{
dataRecord = new StructuredDataRecord(new[]
{
new StructuredDataElement(DataTypeIndex.String, new object[] { dataRecordString }),
});
}
return(new EscapeCommand(identifier, dataRecord));
}
public static IntegerPrecision IntegerPrecision(MetafileReader reader)
{
return(new IntegerPrecision(TextEncodingHelper.GetBitPrecision(reader.ReadInteger(), reader.ReadInteger())));
}
public static SegmentPriorityExtent SegmentPriorityExtent(MetafileReader reader)
{
return(new SegmentPriorityExtent(reader.ReadInteger(), reader.ReadInteger()));
}
public static ColorModelCommand ColorModelCommand(MetafileReader reader)
{
// {1=RGB, 2=CIELAB, 3 = CIELUV, 4 = CMYK, 5 = RGB - related, > 5, reserved for registered values}
return(new ColorModelCommand(reader.ReadInteger()));
}
public static MetafileVersion MetafileVersion(MetafileReader reader)
{
return(new MetafileVersion(reader.ReadInteger()));
}
public static ColorIndexPrecision ColorIndexPrecision(MetafileReader reader)
{
return(new ColorIndexPrecision(TextEncodingHelper.GetBitPrecision(reader.ReadInteger())));
}
public static SegmentPickPriority SegmentPickPriority(MetafileReader reader)
{
return(new SegmentPickPriority(reader.ReadName(), reader.ReadInteger()));
}
public static ApplicationData ApplicationData(MetafileReader reader)
{
return(new ApplicationData(reader.ReadInteger(), reader.ReadString()));
}
