//----------------------------------------------------------------------------
//  EgalTech 2014-2014
//----------------------------------------------------------------------------
// File : LUA_GeoSnap.cpp       Data : 02.10.14        Versione : 1.5i5
// Contenuto : Funzioni di snap ad oggetti del DB geometrico per LUA.
//
//
//
// Modifiche : 02.10.14 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

//--------------------------- Include ----------------------------------------
#include "stdafx.h"
#include "LUA.h"
#include "API.h"
#include "/EgtDev/Include/EInAPI.h"
#include "/EgtDev/Include/EgnStringUtils.h"
#include "/EgtDev/Extern/Lua/Include/lua.hpp"

using namespace std ;


//----------------------------------------------------------------------------
static int
LuaStartPoint( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto iniziale dell'entità
   Point3d ptP ;
   if ( EgtStartPoint( nId, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaEndPoint( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto finale dell'entità
   Point3d ptP ;
   if ( EgtEndPoint( nId, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaMidPoint( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto centrale dell'entità
   Point3d ptP ;
   if ( EgtMidPoint( nId, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCenterPoint( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto centrale dell'entità
   Point3d ptP ;
   if ( EgtCenterPoint( nId, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCentroid( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il centro geometrico dell'entità
   Point3d ptP ;
   if ( EgtCentroid( nId, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaAtParamPoint( lua_State* L)
{
  // 2 o 3 parametri : Id, U [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   double dU ;
   LuaCheckParam( L, 2, dU)
   int nRefId = nId ;
   LuaGetRefId( L, 3, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto in posizione parametrica U della curva
   Point3d ptP ;
   if ( EgtAtParamPoint( nId, dU, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaNearPoint( lua_State* L)
{
  // 2 o 3 parametri : Id, ptNear [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   Point3d ptNear ;
   LuaCheckParam( L, 2, ptNear)
   int nRefId = nId ;
   LuaGetRefId( L, 3, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto di intersezione tra le curve più vicino al punto passato
   Point3d ptP ;
   if ( EgtNearPoint( nId, ptNear, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaIntersectionPoint( lua_State* L)
{
  // 3 o 4 parametri : Id1, Id2, ptNear [, nRefId]
   int nId1 ;
   LuaCheckParam( L, 1, nId1)
   int nId2 ;
   LuaCheckParam( L, 2, nId2)
   Point3d ptNear ;
   LuaCheckParam( L, 3, ptNear)
   int nRefId = nId1 ;
   LuaGetRefId( L, 4, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto di intersezione tra le curve più vicino al punto passato
   Point3d ptP ;
   if ( EgtIntersectionPoint( nId1, nId2, ptNear, nRefId, ptP))
      LuaSetReturn( L, ptP) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaStartVector( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il vettore tangente all'inizio della curva
   Vector3d vtV ;
   if ( EgtStartVector( nId, nRefId, vtV))
      LuaSetReturn( L, vtV) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaEndVector( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il vettore tangente alla fine della curva
   Vector3d vtV ;
   if ( EgtEndVector( nId, nRefId, vtV))
      LuaSetReturn( L, vtV) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaMidVector( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il vettore tangente nel punto medio della curva
   Vector3d vtV ;
   if ( EgtMidVector( nId, nRefId, vtV))
      LuaSetReturn( L, vtV) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaAtParamVector( lua_State* L)
{
  // 2, 3 o 4 parametri : Id, U, sSide [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   double dU ;
   LuaCheckParam( L, 2, dU)
   int nSide = + 1 ;
   string sSide ;
   LuaCheckParam( L, 3, sSide) ;
   if ( sSide == "-")
      nSide = - 1 ;
   int nRefId = nId ;
   LuaGetRefId( L, 4, nRefId) ;
   LuaClearStack( L) ;
  // recupero il punto in posizione parametrica U della curva
   Vector3d vtV ;
   if ( EgtAtParamVector( nId, dU, nSide, nRefId, vtV))
      LuaSetReturn( L, vtV) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaFrame( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il frame
   Frame3d frFrame ;
   if ( EgtFrame( nId, nRefId, frFrame))
      LuaSetReturn( L, frFrame) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveLength( lua_State* L)
{
  // 1 parametro : Id
   int nId ;
   LuaCheckParam( L, 1, nId)
   LuaClearStack( L) ;
  // recupero la lunghezza della curva
   double dLen ;
   if ( EgtCurveLength( nId, &dLen) != FALSE)
      LuaSetReturn( L, dLen) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveExtrusion( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il versore
   Vector3d vtExtr ;
   if ( EgtCurveExtrusion( nId, nRefId, vtExtr))
      LuaSetReturn( L, vtExtr) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveThickness( lua_State* L)
{
  // 1 parametro : Id
   int nId ;
   LuaCheckParam( L, 1, nId)
   LuaClearStack( L) ;
  // recupero lo spessore
   double dThick ;
   if ( EgtCurveThickness( nId, &dThick) != FALSE)
      LuaSetReturn( L, dThick) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaExtrusionByThickness( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il versore e lo spessore
   Vector3d vtExtr ;
   double dThick ;
   if ( EgtCurveExtrusion( nId, nRefId, vtExtr)  &&  ! vtExtr.IsSmall()  &&
        EgtCurveThickness( nId, &dThick)  &&  fabs( dThick) > EPS_SMALL)
      vtExtr *= dThick ;
   else
      vtExtr = V_NULL ;
   LuaSetReturn( L, vtExtr) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveArcRadius( lua_State* L)
{
  // 1 parametro : Id
   int nId ;
   LuaCheckParam( L, 1, nId)
   LuaClearStack( L) ;
  // recupero il raggio
   double dRad ;
   if ( EgtCurveArcRadius( nId, &dRad) != FALSE)
      LuaSetReturn( L, dRad) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveArcNormVersor( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il versore
   Vector3d vtNorm ;
   if ( EgtCurveArcNormVersor( nId, nRefId, vtNorm))
      LuaSetReturn( L, vtNorm) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaCurveCompoCenter( lua_State* L)
{
  // 2 o 3 parametri : Id, nCrv [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nCrv ;
   LuaCheckParam( L, 2, nCrv)
   int nRefId = nId ;
   LuaGetRefId( L, 3, nRefId) ;
   LuaClearStack( L) ;
  // recupero il centro della curva semplice indicizzata
   Point3d ptCen ;
   if ( EgtCurveCompoCenter( nId, nCrv, nRefId, ptCen))
      LuaSetReturn( L, ptCen) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//----------------------------------------------------------------------------
static int
LuaExtTextNormVersor( lua_State* L)
{
  // 1 o 2 parametri : Id [, nRefId]
   int nId ;
   LuaCheckParam( L, 1, nId)
   int nRefId = nId ;
   LuaGetRefId( L, 2, nRefId) ;
   LuaClearStack( L) ;
  // recupero il versore
   Vector3d vtNorm ;
   if ( EgtExtTextNormVersor( nId, nRefId, vtNorm))
      LuaSetReturn( L, vtNorm) ;
   else
      LuaSetReturn( L) ;
   return 1 ;
}

//-------------------------------------------------------------------------------
bool
LuaInstallGeoSnap( lua_State* L)
{
   try {
      lua_register( L, "EgtSP", LuaStartPoint) ;
      lua_register( L, "EgtEP", LuaEndPoint) ;
      lua_register( L, "EgtMP", LuaMidPoint) ;
      lua_register( L, "EgtCP", LuaCenterPoint) ;
      lua_register( L, "EgtGP", LuaCentroid) ;
      lua_register( L, "EgtUP", LuaAtParamPoint) ;
      lua_register( L, "EgtNP", LuaNearPoint) ;
      lua_register( L, "EgtIP", LuaIntersectionPoint) ;
      lua_register( L, "EgtSV", LuaStartVector) ;
      lua_register( L, "EgtEV", LuaEndVector) ;
      lua_register( L, "EgtMV", LuaMidVector) ;
      lua_register( L, "EgtUV", LuaAtParamVector) ;
      lua_register( L, "EgtFR", LuaFrame) ;
      lua_register( L, "EgtET", LuaExtrusionByThickness) ;
      lua_register( L, "EgtCurveLength", LuaCurveLength) ;
      lua_register( L, "EgtCurveExtrusion", LuaCurveExtrusion) ;
      lua_register( L, "EgtCurveThickness", LuaCurveThickness) ;
      lua_register( L, "EgtCurveArcRadius", LuaCurveArcRadius) ;
      lua_register( L, "EgtCurveArcNormVersor", LuaCurveArcNormVersor) ;
      lua_register( L, "EgtCurveCompoCenter", LuaCurveCompoCenter) ;
      lua_register( L, "EgtExtTextNormVersor", LuaExtTextNormVersor) ;
   }
   catch ( ...) {
      return false ;
   }
   return true ;
}