GM_SpatialCircle

Marius Lazar

September 02, 2026 13:43 Updated

Global Mapper SDK

Create a circle around each feature or collection of features. The aDistance parameter is the radius in the given units. If aDistance is 0, then the radius will be determined by the furthest point on the geometry collection

Syntax

C++

Copy

GM_DLL_EXPORTED GM_Error_t32 __stdcall GM_SpatialCircle
(
    GM_LayerHandle_t32      aLayer,    // IN: Input layer
    GM_SpatialOps_Params_t* aParams,   // IN: Parameters
    GM_Distance_t           aDistance, // IN: Buffer width
    GM_FeatureGrouping_t8   aGrouping, // IN: Grouping type
    const char* aStr                   // IN: the attribute list string; may be NULL
)