how can i generate delaunay triangle by Arcgis pro api

[GKmieliauskas]

Hi,

If you own 3D Analyst license you can call geoprocessing tool Create TIN.

If not, you can call python code from here

[Wolf]

You can take a look at this sample:  arcgis-pro-sdk-community-samples/Geometry/MultipatchBuilderEx at master · Esri/arcgis-pro-sdk-commun...

and search for 'Triangle'.   The sample constructs multipatch geometries from triangles.