GM_FitPointClouds – Global Mapper

Global Mapper SDK

GM_FitPointClouds is used to align a point cloud with either 3D control points or another point cloud, minimizing the X, Y, and Z differences. The new point layer becomes the caller's responsibility to close with a call to GM_CloseLayer. If you want to only compare a subset of the points in a cloud, first use GM_CreateLidarQuery to build the two sets of points that you want to compare, then use GM_LidarCompareFromQuery to do the comparison.

Syntax

C++

Copy

GM_DLL_EXPORTED GM_Error_t32 __stdcall GM_LidarCompare
(
                        GM_LayerHandle_t32*       aLayersToCompareTo,     // IN: list of one or more loaded Lidar layers to compare other point cloud layers against.
                        uint32                    aNumLayersToCompareTo,  // IN: how many layers are in the list pointed to by mLayersToCompareTo
                        GM_LayerHandle_t32*       aLayersToCompare,       // IN: list of one or more loaded Lidar layers to compare against the point cloud layers in mLayersToCompareTo
                        uint32                    aNumLayersToCompare,    // IN: how many layers are in the list pointed to by mLayersToCompare
                        GM_LidarBestFitSetup_t*   aSetup                  // IN: A setup options best fit, None for default options
)