api:dk11:java:tatukgis.jdk.tgis_shape.getfirstpoint3d_void
TGIS_Shape.GetFirstPoint3D method
DK for Java | tatukgis.jdk.TGIS_Shape.GetFirstPoint3D | Constructors | Fields | Methods | Properties
Retrieve starting vertex of 3D geometry including elevation. First point with Z coordinate.
Syntax
// Java public TGIS_Point3D GetFirstPoint3D();
// Oxygene public function GetFirstPoint3D : TGIS_Point3D; virtual;
Result
| Type | Description |
|---|---|
| TGIS_Point3D | First point 3D (X, Y, Z). Returns (1e30, 1e30, 1e30) for empty or 2D shape. |
Remarks
PURPOSE:Quick access to 3D geometry start. Elevation-aware variant of GetFirstPoint.
BEHAVIOR:Returns GetPoint3D(0, 0).
USAGE:Get 3D start:startPt := shape.GetFirstPoint3D; z := startPt.Z;
CONSTRAINTS:Returns (1e30, 1e30, 1e30) for 2D shapes or empty.
2026/06/13 00:35