face.cpp File Reference

#include <stdio.h>
#include "makeflo.h"
#include "face.h"

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Classes
class	facet

Functions
static int	firstSet (const blockLoc &l)
static int	findOther (int a, int b)
static void	matchOrientations (orient_t &orient, const blockLoc &sX, const blockLoc &sY, const blockLoc &dX, const blockLoc &dY)
bool	isDisjoint (const blockSpan &a, const blockSpan &b)

Function Documentation

static int findOther ( int  a, int  b  )

static

Definition at line 83 of file face.cpp.

Referenced by face::face(), matchOrientations(), and face::nodeForCoord().

{
        int ret=0;
        while (a==ret || b==ret) 
                ret++; //Keep looking
        return ret; //Found it!
}

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static int firstSet ( const blockLoc &  l )

static

Definition at line 70 of file face.cpp.

References i.

Referenced by matchOrientations().

{
        for (int i=0;i<3;i++)
                if (l[i]!=0) 
                        return i;
        //If we get here, all coordinates are zero-- very bad
        fprintf(stderr,"ERROR! %s:%d> Orientation vector all zeros!\n",
               __FILE__,__LINE__);
        abort();
        return -1;
}

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bool isDisjoint	(	const blockSpan &	a,
		const blockSpan &	b
	)

Definition at line 167 of file face.cpp.

References blockSpan::end, and blockSpan::start.

Referenced by face::buildPatches().

                                                       {
        for (int axis=0;axis<2;axis++) {
                if (a.start[axis]>=b.end[axis]-1) return true;
                if (b.start[axis]>=a.end[axis]-1) return true;
        }
        return false;//No separating axis-- must have a shared point
}

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static void matchOrientations ( orient_t &  orient, const blockLoc &  sX, const blockLoc &  sY, const blockLoc &  dX, const blockLoc &  dY  )

static

Definition at line 95 of file face.cpp.

References findOther(), and firstSet().

Referenced by face::buildPatches().

{
        //Compute the block orientations in the face X and Y axes
        int sOX=firstSet(sX),sOY=firstSet(sY);
        int dOX=firstSet(dX),dOY=firstSet(dY);
        
        //Match up the orientations along the face
        orient[sOX]=dOX;
        orient[sOY]=dOY;
        
        //The remaining orientation is found by the
        // process of elimination
        orient[findOther(sOX,sOY)]=findOther(dOX,dOY);
}

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