From 77685023caaee092a4c1ed4a3da13ff67861a962 Mon Sep 17 00:00:00 2001
From: Daniel Genrich <daniel.genrich@gmx.net>
Date: Tue, 29 Jan 2008 21:01:12 +0000
Subject: Initial commit of cloth modifier from branch rev 13453

---
 intern/elbeem/CMakeLists.txt        |  4 +++
 intern/elbeem/SConscript            |  6 +++-
 intern/elbeem/intern/isosurface.cpp | 56 ++++++++++++++++++++++++++-----------
 3 files changed, 48 insertions(+), 18 deletions(-)

(limited to 'intern/elbeem')

diff --git a/intern/elbeem/CMakeLists.txt b/intern/elbeem/CMakeLists.txt
index 86a60180b05..ac35b8ce00f 100644
--- a/intern/elbeem/CMakeLists.txt
+++ b/intern/elbeem/CMakeLists.txt
@@ -36,5 +36,9 @@ IF(WINDOWS)
     ADD_DEFINITIONS(-DUSE_MSVC6FIXES)
 ENDIF(WINDOWS)
 
+IF(WITH_OPENMP)
+    ADD_DEFINITIONS(-DPARALLEL)
+ENDIF(WITH_OPENMP)
+
 BLENDERLIB_NOLIST(bf_elbeem "${SRC}" "${INC}")
 #, libtype='blender', priority=0 )
diff --git a/intern/elbeem/SConscript b/intern/elbeem/SConscript
index bb6637ba32d..bdcb0507987 100644
--- a/intern/elbeem/SConscript
+++ b/intern/elbeem/SConscript
@@ -5,7 +5,11 @@ Import('env')
 
 sources = env.Glob('intern/*.cpp')
 
-defs = 'NOGUI ELBEEM_BLENDER=1'
+defs = ' NOGUI ELBEEM_BLENDER=1'
+
+if env['WITH_BF_OPENMP'] == 1:
+    defs += ' PARALLEL'
+
 if env['OURPLATFORM']=='win32-vc':
     defs += ' USE_MSVC6FIXES'
 incs = env['BF_PNG_INC'] + ' ' + env['BF_ZLIB_INC'] + ' ' +env['BF_SDL_INC']
diff --git a/intern/elbeem/intern/isosurface.cpp b/intern/elbeem/intern/isosurface.cpp
index 1b0ba13c707..f90621f3b73 100644
--- a/intern/elbeem/intern/isosurface.cpp
+++ b/intern/elbeem/intern/isosurface.cpp
@@ -22,6 +22,10 @@
 #define round(x) (x)
 #endif
 
+#if PARALLEL==1	
+#include <omp.h>
+#endif
+
 /******************************************************************************
  * Constructor
  *****************************************************************************/
@@ -160,13 +164,6 @@ void IsoSurface::triangulate( void )
 		mpEdgeVerticesZ[i] = -1;
 	}
 
-	ntlVec3Gfx pos[8];
-	float value[8];
-	int cubeIndex;      // index entry of the cube 
-	int triIndices[12]; // vertex indices 
-	int *eVert[12];
-	IsoLevelVertex ilv;
-
 	// edges between which points?
 	const int mcEdges[24] = { 
 		0,1,  1,2,  2,3,  3,0,
@@ -193,7 +190,12 @@ void IsoSurface::triangulate( void )
 				px = mStart[0]-gsx*0.5;
 				for(int i=1;i<(mSizex-2);i++) {
 					px += gsx;
-
+					int cubeIndex;      // index entry of the cube 
+					float value[8];
+					int triIndices[12]; // vertex indices 
+					int *eVert[12];
+					IsoLevelVertex ilv;
+					
 					value[0] = *getData(i  ,j  ,k  );
 					value[1] = *getData(i+1,j  ,k  );
 					value[2] = *getData(i+1,j+1,k  );
@@ -239,6 +241,7 @@ void IsoSurface::triangulate( void )
 					eVert[11] = &mpEdgeVerticesZ[ ISOLEVEL_INDEX( i+0, j+1, edgek+0) ];
 
 					// grid positions
+					ntlVec3Gfx pos[8];
 					pos[0] = ntlVec3Gfx(px    ,py    ,pz);
 					pos[1] = ntlVec3Gfx(px+gsx,py    ,pz);
 					pos[2] = ntlVec3Gfx(px+gsx,py+gsy,pz);
@@ -344,10 +347,7 @@ void IsoSurface::triangulate( void )
 		if(mUseFullEdgeArrays) {
 			errMsg("IsoSurface::triangulate","Disabling mUseFullEdgeArrays!");
 		}
-
-		// subdiv local arrays
-		gfxReal orgval[8];
-		gfxReal subdAr[2][11][11]; // max 10 subdivs!
+		
 		ParticleObject* *arppnt = new ParticleObject*[mSizez*mSizey*mSizex];
 
 		// construct pointers
@@ -408,13 +408,25 @@ void IsoSurface::triangulate( void )
 
 		debMsgStd("IsoSurface::triangulate",DM_MSG,"Starting. Parts in use:"<<pInUse<<", Subdivs:"<<mSubdivs, 9);
 		pz = mStart[2]-(double)(0.*gsz)-0.5*orgGsz;
+	
 		for(int ok=1;ok<(mSizez-2)*mSubdivs;ok++) {
 			pz += gsz;
 			const int k = ok/mSubdivs;
 			if(k<=0) continue; // skip zero plane
+#if PARALLEL==1	
+#pragma omp parallel for
+#endif	
 			for(int j=1;j<(mSizey-2);j++) {
 				for(int i=1;i<(mSizex-2);i++) {
-
+					float value[8];
+					ntlVec3Gfx pos[8];
+					int cubeIndex;      // index entry of the cube 
+					int triIndices[12]; // vertex indices 
+					int *eVert[12];
+					IsoLevelVertex ilv;
+					gfxReal orgval[8];
+					gfxReal subdAr[2][11][11]; // max 10 subdivs!
+					
 					orgval[0] = *getData(i  ,j  ,k  );
 					orgval[1] = *getData(i+1,j  ,k  );
 					orgval[2] = *getData(i+1,j+1,k  ); // with subdivs
@@ -426,6 +438,7 @@ void IsoSurface::triangulate( void )
 
 					// prebuild subsampled array slice
 					const int sdkOffset = ok-k*mSubdivs; 
+
 					for(int sdk=0; sdk<2; sdk++) 
 						for(int sdj=0; sdj<mSubdivs+1; sdj++) 
 							for(int sdi=0; sdi<mSubdivs+1; sdi++) {
@@ -580,8 +593,13 @@ void IsoSurface::triangulate( void )
 
 										// init isolevel vertex
 										ilv.v = p1 + (p2-p1)*mu; // with subdivs
+#if PARALLEL==1	
+#pragma omp critical
+#endif
+										{
 										mPoints.push_back( ilv );
 										triIndices[e] = (mPoints.size()-1);
+										}
 										// store vertex 
 										*eVert[ e ] = triIndices[e]; 
 									}	else {
@@ -591,23 +609,27 @@ void IsoSurface::triangulate( void )
 								} // along all edges 
 							}
 							// removed cutoff treatment...
-
+							
 							// Create the triangles... 
+#if PARALLEL==1	
+#pragma omp critical
+#endif
+							{
 							for(int e=0; mcTriTable[cubeIndex][e]!=-1; e+=3) {
 								mIndices.push_back( triIndices[ mcTriTable[cubeIndex][e+0] ] );
 								mIndices.push_back( triIndices[ mcTriTable[cubeIndex][e+1] ] ); // with subdivs
 								mIndices.push_back( triIndices[ mcTriTable[cubeIndex][e+2] ] );
 								//errMsg("TTT"," i1"<<mIndices[mIndices.size()-3]<<" "<< " i2"<<mIndices[mIndices.size()-2]<<" "<< " i3"<<mIndices[mIndices.size()-1]<<" "<< mIndices.size() );
-							}
-
 							} // triangles in edge table?
+							}
+							}
 							
 						}//si
 					}// sj
 
 				}//i
 			}// j
-
+			
 			// copy edge arrays
 			for(int j=0;j<(mSizey-0)*mSubdivs;j++) 
 				for(int i=0;i<(mSizex-0)*mSubdivs;i++) {
-- 
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