Create topo cropped to DWG contours

Hi, I’m trying to create a topo that dosnt need to be split after around the DWG curve contours. I thought maybe I could make the topo then use convexhull to get where the outline of the topo is and cut the created topo. But convexhull is unreliable. Anyone have any ideas? I think Topography.bypointsandfacets can create a mesh to the points along the curve, then I can get the outline of that to cut the topo. But I’m unsure how to get a mesh from just the contour curve points I create.