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*DECK NAPFTD
SUBROUTINE NAPFTD(NXP,MXP,NXD,MXD,FXTD)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Perform a projection of second geometry on first one to compute
* fraction of region of the first geometry occupied by the second
* geometry regions
*
*Copyright:
* Copyright (C) 2014 Ecole Polytechnique de Montreal.
*
*Author(s):
* R. Chambon
*
*Parameters: input/output
* for core with heterogeneous mixture
* NXP number of region along X direction for first geometry
* MXP mesh of region along X direction for first geometry
* NXD number of region along X direction for second geometry
* MXD mesh of region along X direction for second geometry
* FXTD fraction of region along X direction
*
*-----------------------------------------------------------------------
*
USE GANLIB
IMPLICIT NONE
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER NXP,NXD
REAL MXP(NXP),MXD(NXD),FXTD(NXP,NXD)
*----
* LOCAL VARIABLES
*----
INTEGER IP,ID
REAL DXP
DO IP=1,NXP
DXP=MXP(IP+1)-MXP(IP)
DO ID=1,NXD
IF((MXD(ID).LE.MXP(IP)).AND.(MXD(ID+1).GE.MXP(IP+1))) THEN
FXTD(IP,ID)=1.0
ELSEIF ((MXD(ID).LE.MXP(IP)).AND.(MXD(ID+1).GT.MXP(IP))) THEN
FXTD(IP,ID)=(MXD(ID+1)-MXP(IP))/DXP
ELSEIF ((MXD(ID).GE.MXP(IP)).AND.
1 (MXD(ID+1).LE.MXP(IP+1))) THEN
FXTD(IP,ID)=(MXD(ID+1)-MXD(ID))/DXP
ELSEIF ((MXD(ID).LT.MXP(IP+1)).AND.
1 (MXD(ID+1).GE.MXP(IP+1))) THEN
FXTD(IP,ID)=(MXP(IP+1)-MXD(ID))/DXP
ENDIF
ENDDO
ENDDO
RETURN
END
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