internal Layer(string name, bool checkName)
: base(name, DxfObjectCode.Layer, checkName)
{
if (string.IsNullOrEmpty(name))
throw new ArgumentNullException(nameof(name), "The layer name should be at least one character long.");
this.IsReserved = name.Equals(DefaultName, StringComparison.OrdinalIgnoreCase);
this.color = AciColor.Default;
this.linetype = Linetype.Continuous;
this.isVisible = true;
this.plot = true;
this.lineweight = Lineweight.Default;
this.transparency = new Transparency(0);
}
protected EntityObject(EntityType type, string dxfCode)
: base(dxfCode)
{
this.type = type;
this.color = AciColor.ByLayer;
this.layer = Layer.Default;
this.lineType = LineType.ByLayer;
this.lineweight = Lineweight.ByLayer;
this.transparency = Transparency.ByLayer;
this.lineTypeScale = 1.0;
this.isVisible = true;
this.normal = Vector3.UnitZ;
this.reactors = new List<DxfObject>();
this.xData = new XDataDictionary();
this.xData.AddAppReg += this.XData_AddAppReg;
this.xData.RemoveAppReg += this.XData_RemoveAppReg;
}
public Pixbuf GetThumbnail(int width, int height, Transparency alpha)
{
return new Pixbuf(gimp_image_get_thumbnail(ID, width, height, alpha));
}
public Pixel[,] GetThumbnail(Dimensions dimensions, Transparency alpha)
{
IntPtr src = gimp_image_get_thumbnail(ID, dimensions.Width,
dimensions.Height, alpha);
var pixbuf = new Pixbuf(src);
int bpp = ActiveDrawable.Bpp;
var thumbnail = Pixel.ConvertToPixelArray(pixbuf.Pixels, dimensions, bpp);
// Marshaller.Free(src);
return thumbnail;
}
static extern IntPtr gimp_image_get_thumbnail(Int32 image_ID, int width, int height, Transparency alpha);
/// <summary>
/// Initializes a new instance of the <c>Attribute</c> class.
/// </summary>
/// <param name="definition"><see cref="AttributeDefinition">Attribute definition</see>.</param>
/// <remarks>
/// Although the attribute entity could override values defined in its definition for simplicity the implementation has restricted this possibility.
/// </remarks>
public Attribute(AttributeDefinition definition)
: base(DxfObjectCode.Attribute)
{
if (definition == null)
throw new ArgumentNullException("definition");
//EntityObject properties
this.color = definition.Color;
this.layer = definition.Layer;
this.lineType = definition.LineType;
this.lineweight = definition.Lineweight;
this.lineTypeScale = definition.LineTypeScale;
this.transparency = definition.Transparency;
this.isVisible = definition.IsVisible;
this.normal = definition.Normal;
//Attribute definition properties
this.definition = definition;
this.tag = definition.Tag;
this.value = definition.Value;
this.style = definition.Style;
this.position = definition.Position;
this.flags = definition.Flags;
this.height = definition.Height;
this.widthFactor = definition.WidthFactor;
this.obliqueAngle = definition.ObliqueAngle;
this.rotation = definition.Rotation;
this.alignment = definition.Alignment;
}
private Layer ReadLayer()
{
Debug.Assert(this.chunk.ReadString() == SubclassMarker.Layer);
string name = null;
bool isVisible = true;
bool plot = true;
AciColor color = AciColor.Default;
Linetype linetype = Linetype.ByLayer;
Lineweight lineweight = Lineweight.Default;
LayerFlags flags = LayerFlags.None;
Transparency transparency = new Transparency(0);
XDataDictionary xData = new XDataDictionary();
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 2:
name = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 70:
flags = (LayerFlags) this.chunk.ReadShort();
this.chunk.Next();
break;
case 62:
short index = this.chunk.ReadShort();
if (index < 0)
{
isVisible = false;
index = Math.Abs(index);
}
if (!color.UseTrueColor)
color = AciColor.FromCadIndex(index);
this.chunk.Next();
break;
case 420: // the layer uses true color
color = AciColor.FromTrueColor(this.chunk.ReadInt());
this.chunk.Next();
break;
case 6:
string linetypeName = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
linetype = this.GetLinetype(linetypeName);
this.chunk.Next();
break;
case 290:
plot = this.chunk.ReadBool();
this.chunk.Next();
break;
case 370:
lineweight = (Lineweight) this.chunk.ReadShort();
this.chunk.Next();
break;
case 1001:
string appId = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
XData data = this.ReadXDataRecord(new ApplicationRegistry(appId));
xData.Add(data);
break;
default:
if (this.chunk.Code >= 1000 && this.chunk.Code <= 1071)
throw new Exception("The extended data of an entity must start with the application registry code.");
this.chunk.Next();
break;
}
}
if (string.IsNullOrEmpty(name) || !TableObject.IsValidName(name))
return null;
// read the layer transparency from the extended data
XData xDataTransparency;
if (xData.TryGetValue("AcCmTransparency", out xDataTransparency))
{
// there should be only one entry with the transparency value, the first 1071 code will be used
foreach (XDataRecord record in xDataTransparency.XDataRecord)
{
if (record.Code == XDataCode.Int32)
{
transparency = Transparency.FromAlphaValue((int) record.Value);
break;
}
}
}
return new Layer(name, false)
{
Color = color,
Linetype = linetype,
IsVisible = isVisible,
IsFrozen = flags.HasFlag(LayerFlags.Frozen),
IsLocked = flags.HasFlag(LayerFlags.Locked),
Plot = plot,
Lineweight = lineweight,
Transparency = transparency
};
}
/// <summary>
/// parse method is called from the atom parser to populate an Transparency node
/// </summary>
/// <param name="node">the xmlnode to parser</param>
/// <returns>Transparency object</returns>
public static Transparency parse(XmlNode node)
{
Transparency trans = null;
if (String.Compare(node.NamespaceURI, BaseNameTable.gNamespace, true) == 0)
{
trans = new Transparency();
if (node.Attributes != null)
{
trans.Value = node.Attributes["value"].Value;
}
}
return trans;
}
private Layer ReadLayer()
{
Debug.Assert(this.chunk.ReadString() == SubclassMarker.Layer);
string name = null;
bool isVisible = true;
bool plot = true;
AciColor color = AciColor.Default;
LineType lineType = LineType.ByLayer;
Lineweight lineweight = Lineweight.Default;
LayerFlags flags = LayerFlags.None;
Transparency transparency = new Transparency(0);
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 2:
name = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 70:
flags = (LayerFlags) this.chunk.ReadShort();
this.chunk.Next();
break;
case 62:
short index = this.chunk.ReadShort();
if (index < 0)
{
isVisible = false;
index = Math.Abs(index);
}
if (!color.UseTrueColor)
color = AciColor.FromCadIndex(index);
this.chunk.Next();
break;
case 420: // the layer uses true color
color = AciColor.FromTrueColor(this.chunk.ReadInt());
this.chunk.Next();
break;
case 6:
// the line type names ByLayer or ByBlock are case insensitive
string lineTypeName = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
if (string.Compare(lineTypeName, LineType.ByLayerName, StringComparison.OrdinalIgnoreCase) == 0)
lineTypeName = LineType.ByLayerName;
else if (string.Compare(lineTypeName, LineType.ByBlockName, StringComparison.OrdinalIgnoreCase) == 0)
lineTypeName = LineType.ByBlockName;
lineType = this.GetLineType(lineTypeName);
this.chunk.Next();
break;
case 290:
plot = this.chunk.ReadBool();
this.chunk.Next();
break;
case 370:
lineweight = Lineweight.FromCadIndex(this.chunk.ReadShort());
this.chunk.Next();
break;
case 1001:
// layer transparency is stored in XData
// the ApplicationRegistries might be defined after the objects that requires them,
// same old story this time we don't need to store the information in the object XData since it is only supported by entities.
if (this.chunk.ReadString() == "AcCmTransparency")
{
this.chunk.Next();
transparency = Transparency.FromAlphaValue(this.chunk.ReadInt());
}
this.chunk.Next();
break;
default:
this.chunk.Next();
break;
}
}
if (string.IsNullOrEmpty(name)) return null;
return new Layer(name)
{
Color = color,
LineType = lineType,
IsVisible = isVisible,
IsFrozen = (flags & LayerFlags.Frozen) == LayerFlags.Frozen,
IsLocked = (flags & LayerFlags.Locked) == LayerFlags.Locked,
Plot = plot,
Lineweight = lineweight,
Transparency = transparency
};
}
private bool CheckAdjacent( int x, int y, int z, Direction direction, Transparency transparency )
{
// returns true if a face should be spawned
Index index = chunk.GetAdjacentIndex(x,y,z, direction);
ushort adjacentVoxel = chunk.GetVoxel(index.x, index.y, index.z);
if (adjacentVoxel == ushort.MaxValue) { // if the neighbor chunk is missing
if (Engine.ShowBorderFaces || direction == Direction.up) {
return true;
}
else {
return false;
}
}
Transparency result = Engine.GetVoxelType (adjacentVoxel).VTransparency; // get the transparency of the adjacent voxel
// parse the result (taking into account the transparency of the adjacent block as well as the one doing this check)
if (transparency == Transparency.transparent) {
if (result == Transparency.transparent)
return false; // don't draw a transparent block next to another transparent block
else
return true; // draw a transparent block next to a solid or semi-transparent
}
else {
if (result == Transparency.solid)
return false; // don't draw a solid block or a semi-transparent block next to a solid block
else
return true; // draw a solid block or a semi-transparent block next to both transparent and semi-transparent
}
}
