api:dk11:activex:tatukgis_xdk11.itgis_layerpixel.locate_itgis_point_itgis_color_itgis_doublearray_wordbool
Table of Contents
ITGIS_LayerPixel.Locate method
DK11 for ActiveX | TatukGIS_XDK11.ITGIS_LayerPixel.Locate | Methods | Properties
If a given point is located in the image area, returns true and sets variables.
Syntax
// C# public WordBool Locate( ITGIS_Point _ptg, ref ITGIS_Color _rgbMapped, ref ITGIS_DoubleArray _nativesVals, ref WordBool _transparency );
' VisualBasic Public Function Locate( ByVal _ptg As ITGIS_Point, ByRef _rgbMapped As ITGIS_Color, ByRef _nativesVals As ITGIS_DoubleArray, ByRef _transparency As WordBool ) As WordBool
// Oxygene public function Locate( _ptg : ITGIS_Point; var _rgbMapped : ITGIS_Color; var _nativesVals : ITGIS_DoubleArray; var _transparency : WordBool ) : WordBool;
Parameters
| Name | Type | Description |
|---|---|---|
| _ptg | ITGIS_Point | reference point /searching point/; if the layer has been attached to the Viewer then expected _ptg units are in a Viewer coordinate space; otherwise expected _ptg units are in a Layer coordinate space |
| _rgbMapped | ITGIS_Color | color in _ptg point after mapping (the same as _nativesVals if no mapping, in this case _rgbMapped and $FF = Byte(_nativesVals[0] and so on). |
| _nativesVals | ITGIS_DoubleArray | dynamic array of double with original values in _ptg point (for example R, G, B), Length(_nativesVals) is equal to number of bands |
| _transparency | WordBool | set on True if point is transparent |
Result
| Type | Description |
|---|---|
| WordBool | True if success |
Remarks
same meaning as LocateEx() with _pixelsize=0
References
2022/11/16 01:10