Forum Post: Re: Change Elements Elevation with in the drawn polygon and break lines (Microstation V8i Using MDL Language or C#.Net)

solidCreateMesh(PolygonElmDescr,PolygonFilePos);

Private void solidCreateMesh(MSElementDescr *edP,ULong filePos)

{

       MSElementDescr *remainingEdPP = NULL;

       MSElementDescr *ppMeshED = NULL;

       KIBODY *pBody = NULL;

       KIENTITY_LIST *bodyListPP = NULL;                  

       KIENTITY_LIST *templateListPP = NULL;    

       KIENTITY_LIST *transformListPP = NULL;    

       Transform *pTran = NULL;              

       Dpoint3d *vertices = NULL;          

       long *facets = NULL;          

       long numFacets = 0;            

       long numVertices = 0;          

       int status = 0, i = 0;        

       int nItems = 0, c = 0;        

       mdlKISolid_beginCurrTrans (mdlModelRef_getActive());

       status = mdlKISolid_elementToBodyList (&bodyListPP, &templateListPP,&transformListPP ,&remainingEdPP,edP,MASTERFILE, filePos, TRUE, TRUE, TRUE);

       mdlKISolid_endCurrTrans ();

       if (status == SUCCESS && bodyListPP != NULL)

       {

               for (i = 0L;

               SUCCESS == mdlKISolid_listNthEl (&pBody, bodyListPP, i) &&

               SUCCESS == mdlKISolid_listNthEl (&pTran, transformListPP, i);

               i++)

               {

                       status = mdlKISolid_facetBody(&vertices, &numVertices, &facets,&numFacets, pBody, pTran, 3,1, .5, 0.0 );

                       if (numVertices == 0 || vertices == NULL)

                               continue;

                       mdlKISolid_beginCurrTrans (mdlModelRef_getActive());

                       mdlCurrTrans_transformPointArray (vertices, vertices, numVertices);

                       mdlKISolid_endCurrTrans ();

                       for ( i = 0; i + 2 < numFacets * 3; i += 3)

                       {

                                facets[i] = abs (facets[i]);

                       }            

                       mdlMesh_newPolyfaceDirect (&ppMeshED, NULL, facets, 3,numFacets, vertices, numVertices, TRUE);

                       mdlElmdscr_add (ppMeshED);

                       mdlElmdscr_display (ppMeshED, 0, NORMALDRAW);

               }

       }

if (ppMeshED)  

mdlElmdscr_freeAll (&ppMeshED);

if (pBody)

mdlKISolid_freeBody( pBody );                        

if (bodyListPP)

{

mdlKISolid_listCount(&nItems, bodyListPP);

for(c = 0; c < nItems; c++)

{

KIENTITY        *entP = NULL;

mdlKISolid_listNthEl(&entP, bodyListPP, c);

mdlKISolid_deleteEntity(entP);

}

mdlKISolid_listDelete(&bodyListPP);

}

}

By using this function i got a output mesh element as shown in the image fig1.

fig2 is the polygon drawn programmatically by the user.