From a641df2aea8da216dfa3eed320567d6377840720 Mon Sep 17 00:00:00 2001
From: Eduardo DAVILA <davila@localhost.localdomain>
Date: Fri, 29 Jun 2018 15:57:02 +0200
Subject: [PATCH] #3202 BBTK Feature New Normal  - fast algorithm for
 ImageBoundaries box

---
 packages/vtk/src/bbvtkImageBoundaries.cxx | 49 +++++++++++++++++------
 1 file changed, 37 insertions(+), 12 deletions(-)

diff --git a/packages/vtk/src/bbvtkImageBoundaries.cxx b/packages/vtk/src/bbvtkImageBoundaries.cxx
index b76ce96..fb9eb24 100644
--- a/packages/vtk/src/bbvtkImageBoundaries.cxx
+++ b/packages/vtk/src/bbvtkImageBoundaries.cxx
@@ -30,6 +30,9 @@
 //===== 
 #include "bbvtkImageBoundaries.h"
 #include "bbvtkPackage.h"
+#include "creaVtk_MACROS.h"
+
+#include <omp.h>
 namespace bbvtk
 {
 
@@ -40,18 +43,13 @@ BBTK_BLACK_BOX_IMPLEMENTATION(ImageBoundaries,bbtk::AtomicBlackBox);
 //===== 
 void ImageBoundaries::Process()
 {
-	printf("bbtk:vtk::ImageBoundaries::Process start\n");
 	if (bbGetInputIn()!=NULL)
 	{
-		int i,j,k;	
-		int ext[6];
-		double value;
-		
+		int ext[6];		
 		bbGetInputIn()->GetWholeExtent(ext);
 		int maxX	= ext[1]-ext[0]+1;
 		int maxY	= ext[3]-ext[2]+1;
 		int maxZ	= ext[5]-ext[4]+1;
-				
 		int bXMax	= 0;
 		int bYMax	= 0;
 		int bZMax	= 0;
@@ -59,13 +57,17 @@ void ImageBoundaries::Process()
 		int bYMin	= maxY-1;
 		int bZMin	= maxZ-1;
 		
-		for (i=0 ; i<maxX ; i++)
+/*
+		#pragma omp parallel for
+		for (int i=0 ; i<maxX ; i++)
 		{
+			int j;	
+			int k;
 			for (j=0 ; j<maxY ; j++)
 			{
 				for (k=0 ; k<maxZ ; k++)
 				{
-					value = bbGetInputIn()->GetScalarComponentAsDouble(i, j, k,0);
+					double value = bbGetInputIn()->GetScalarComponentAsDouble(i, j, k,0);
 					if ( (value>=bbGetInputLowerValue()) && (value<=bbGetInputUpperValue())  )
 					{
 						if (i<bXMin) bXMin=i;
@@ -78,10 +80,35 @@ void ImageBoundaries::Process()
 				} // for k
 			} // for j
 		} // i
-			
+*/
+
+		DEF_POINTER_IMAGE_VTK_CREA(vI,ssI,pI,stI,bbGetInputIn())	
+		int i;
+		int j;	
+		long int index=0;
+		for (int k=0 ; k<maxZ ; k++)
+		{
+			for (j=0 ; j<maxY ; j++)
+			{
+				for (i=0 ; i<maxX ; i++)
+				{
+//					double value = bbGetInputIn()->GetScalarComponentAsDouble(i, j, k,0);
+					GETVALUE2_VTK_CREA(vI,pI,stI,index) 
+					index++;
+					if ( (vI>=bbGetInputLowerValue()) && (vI<=bbGetInputUpperValue())  )
+					{
+						if (i<bXMin) bXMin=i;
+						if (j<bYMin) bYMin=j;
+						if (k<bZMin) bZMin=k;
+						if (i>bXMax) bXMax=i;
+						if (j>bYMax) bYMax=j;
+						if (k>bZMax) bZMax=k;
+					}
+				} // for k
+			} // for j
+		} // i
 		std::vector<int> tmpIndex;		
 		std::vector<int> tmpSize;
-		
 		if (bXMin>bXMax){
 			tmpIndex.push_back(0);
 			tmpIndex.push_back(0);
@@ -97,13 +124,11 @@ void ImageBoundaries::Process()
 			tmpSize.push_back(bYMax-bYMin+1);
 			tmpSize.push_back(bZMax-bZMin+1);
 		}
-			
 		bbSetOutputIndex(tmpIndex);
 		bbSetOutputSize(tmpSize);
 	} else {
 		printf("bbtk warnning: bbtk:vtk:ImageBoundaries box, Input image (In) not initialized..\n");
 	}
-	printf("bbtk:vtk::ImageBoundaries::Process end\n");
 }
 //===== 
 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
-- 
2.44.0