igds_type: igds_text_node
Text nodes correspond to IGDS element type 7.
Text node features are point features, and only have a single coordinate. Usually, text nodes are used to group together lines of text into a single complex element. However, such text groups are handled by the igds_multi_text type and not by this type, which is used only for text nodes with no attached text.
Tip: Free-standing text nodes are often used as point features in IGDS files, with the text node number holding a key to related attribution.
Text node elements have the following attributes.
|
Attribute Name |
Description |
|---|---|
|
igds_node_number |
The node number assigned to the text node. Range: 0..65535 Default: 0 |
|
igds_font |
The IGDS font number for the text node. For free standing text nodes, this value is relatively meaningless. Values from 0..511 are RSC fonts, while values from 512..1023 are SHX font, and values above 1023 are True Type fonts. Range: 0 Default: 25 |
|
igds_rotation |
The rotation of the text node. The rotation is measured in degrees counter clockwise up from horizontal. For free standing text nodes, this value is relatively meaningless. Range: -360.0..360.0 Default: 0 Reprojectable: Yes |
|
igds_justification |
The justification code for the text node. Range: 0..14 0 is Left/Top 8 is Center/Bottom 1 is Left/Center 9 is Right Margin/Top 2 is Left/Bottom 10 is Right Margin/Center 3 is Left Margin/Top 11 is Right Margin/Bottom 4 is Left Margin/Center 12 is Right/Top 5 is Left Margin/Bottom 13 is Right/Center 6 is Center/Top 14 is Right/Bottom 7 is Center/Center Default: 5 |
|
igds_text_size |
The text size of the text in the node. This is stored as the text height in the element. The text size is measured in ground units. Range: Any real number > 0 Default: 20 Reprojectable: Yes |
|
igds_text_width_ |
The text width of the text in the node. The text width is measured in ground units. If this is not supplied, then igds_text_size is used. Range: Any real number > 0 Default: Value of igds_text_size Reprojectable: Yes |
|
igds_line_spacing |
The line spacing between lines of text associated with the text node. It is measured in ground units. Range: Any real number > 0 Default: 0 Reprojectable: Yes |
|
igds_number_of_strings |
The number of text elements associated with the text node. If the number is greater than 0, then the text node is returned as an igds_multi_text. This is only used by the IGDS reader. Range: integer >= 0 Default: Not applicable. This field is only used by the reader. |
|
igds_max_string_length |
The maximum length of the strings associated with the text node. Range: integer >= 0 Default: 255 |
|
igds_max_used_string_ |
The actual length of the strings associated with the text node. (Not included in Version 8 DGN files.) Range: integer >= 0 Default: 0 |
Tip: When a text node feature is reprojected, its rotation and text size are also automatically adjusted to be correct in the new coordinate system.