From 37c6e26a4373f744dbc2d7cec79304eae3a69971 Mon Sep 17 00:00:00 2001
From: Daniele Bariletti <daniele.bariletti@egalware.comm>
Date: Thu, 23 May 2024 09:41:29 +0200
Subject: [PATCH] EgtExecutor : - riaggiunte le funzioni per mostrare i punti
 di controllo di una curva Bezier.

---
 EXE_GdbGetCurve.cpp | 34 ++++++++++++++++++++++++++++++++++
 LUA_GdbGetCurve.cpp | 23 +++++++++++++++++++++++
 2 files changed, 57 insertions(+)

diff --git a/EXE_GdbGetCurve.cpp b/EXE_GdbGetCurve.cpp
index 5f1c641..1a1a620 100644
--- a/EXE_GdbGetCurve.cpp
+++ b/EXE_GdbGetCurve.cpp
@@ -677,4 +677,38 @@ ExeCurveCompoNormVersor( int nId, int nSimpCrv, int nRefId, Vector3d& vtNorm)
    }
   // gestione trasformazione ( eventuale)
    return TransformVector( pGeomDB, nId, nRefId, vtNorm) ;
+}
+
+
+//----------------------------------------------------------------------------
+bool
+ExeShowCurveBezierControlPoints( int nCrvId, int* pnCount)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, false)
+      // recupero la curva di bezier
+      const ICurveBezier* pCrvBezier = GetCurveBezier( pGeomDB->GetGeoObj( nCrvId)) ;
+   if ( pCrvBezier == nullptr  ||  pCrvBezier->GetType() != CRV_BEZIER)
+      return false ;
+   int nParent = pGeomDB->GetParentId( nCrvId) ;
+   int nDeg = pCrvBezier->GetDegree() ;
+   bool bRat = pCrvBezier->IsRational() ;
+   int nFirstId = -1 ;
+   int nCount = 0 ;
+   for ( int i = 0 ; i < nDeg + 1 ; ++i) {
+      IGeoPoint3d* pGeoPt( CreateGeoPoint3d()) ;
+      if ( ! bRat)
+         pGeoPt->Set( pCrvBezier->GetControlPoint( i)) ;
+      else
+         pGeoPt->Set( pCrvBezier->GetControlPoint( i) * pCrvBezier->GetControlWeight( i)) ;
+      int nId = pGeomDB->AddGeoObj( GDB_ID_NULL, nParent, pGeoPt) ;
+      if ( nFirstId == GDB_ID_NULL)
+         nFirstId = nId ;
+      if ( nId != GDB_ID_NULL)
+         ++nCount ;
+   }
+   // restituisco i risultati
+   if ( pnCount != nullptr)
+      *pnCount = nCount ;
+   return nFirstId ;
 }
\ No newline at end of file
diff --git a/LUA_GdbGetCurve.cpp b/LUA_GdbGetCurve.cpp
index 112d39d..3ab6b87 100644
--- a/LUA_GdbGetCurve.cpp
+++ b/LUA_GdbGetCurve.cpp
@@ -531,6 +531,28 @@ LuaCurveCompoNormVersor( lua_State* L)
    return 1 ;
 }
 
+//----------------------------------------------------------------------------
+static int
+LuaShowCurveBezierControlPoint( lua_State* L)
+{
+   // 1 parametro : nCrvId
+   int nCrvId ;
+   LuaCheckParam( L, 1, nCrvId)
+      LuaClearStack( L) ;
+   int nCount = 0 ;
+   int nId = ExeShowCurveBezierControlPoints( nCrvId, &nCount) ;
+   // restituisco il risultato
+   if ( nId != GDB_ID_NULL) {
+      LuaSetParam( L, nId) ;
+      LuaSetParam( L, nCount) ;  
+   }
+   else {
+      LuaSetParam( L) ;
+      LuaSetParam( L) ;
+   }
+   return 2 ;
+}
+
 //-------------------------------------------------------------------------------
 bool
 LuaInstallGdbGetCurve( LuaMgr& luaMgr)
@@ -562,5 +584,6 @@ LuaInstallGdbGetCurve( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtCurveCompoRadius", LuaCurveCompoRadius) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtCurveCompoAngCenter", LuaCurveCompoAngCenter) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtCurveCompoNormVersor", LuaCurveCompoNormVersor) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtShowCurveBezierControlPoints", LuaShowCurveBezierControlPoint) ;
    return bOk ;
 }