--- /dev/null
+# Projection Algorithms
+
+# Project prisms from one meshed box to another mesh on the same box
+
+import salome
+salome.salome_init_without_session()
+
+from salome.geom import geomBuilder
+from salome.smesh import smeshBuilder
+
+geom_builder = geomBuilder.New()
+smesh_builder = smeshBuilder.New()
+
+# Prepare geometry
+
+# Create a parallelepiped
+box = geom_builder.MakeBoxDXDYDZ(200, 100, 70)
+geom_builder.addToStudy( box, "box" )
+
+# Get geom faces to mesh with triangles in the 1ts and 2nd meshes
+faces = geom_builder.SubShapeAll(box, geom_builder.ShapeType["FACE"])
+# 2 adjacent faces of the box
+f1 = faces[2]
+f2 = faces[0]
+# face opposite to f2
+f2opp = geom_builder.GetOppositeFace( box, f2 )
+
+# Get vertices used to specify how to associate sides of faces at projection
+[v1F1, v2F1] = geom_builder.SubShapeAll(f1, geom_builder.ShapeType["VERTEX"])[:2]
+[v1F2, v2F2] = geom_builder.SubShapeAll(f2, geom_builder.ShapeType["VERTEX"])[:2]
+geom_builder.addToStudyInFather( box, v1F1, "v1F1" )
+geom_builder.addToStudyInFather( box, v2F1, "v2F1" )
+geom_builder.addToStudyInFather( box, v1F2, "v1F2" )
+geom_builder.addToStudyInFather( box, v2F2, "v2F2" )
+
+# Make group of 3 edges of f1 and f2
+edgesF1 = geom_builder.CreateGroup(f1, geom_builder.ShapeType["EDGE"])
+geom_builder.UnionList( edgesF1, geom_builder.SubShapeAll(f1, geom_builder.ShapeType["EDGE"])[:3])
+edgesF2 = geom_builder.CreateGroup(f2, geom_builder.ShapeType["EDGE"])
+geom_builder.UnionList( edgesF2, geom_builder.SubShapeAll(f2, geom_builder.ShapeType["EDGE"])[:3])
+geom_builder.addToStudyInFather( box, edgesF1, "edgesF1" )
+geom_builder.addToStudyInFather( box, edgesF2, "edgesF2" )
+
+# Make the source mesh with prisms
+src_mesh = smesh_builder.Mesh(box, "Source mesh")
+src_mesh.Segment().NumberOfSegments(9,10)
+src_mesh.Quadrangle()
+src_mesh.Hexahedron()
+src_mesh.Triangle(f1) # triangular sub-mesh
+src_mesh.Compute()
+
+# Mesh the box using projection algorithms
+
+# Define the same global 1D and 2D hypotheses
+tgt_mesh = smesh_builder.Mesh(box, "Target mesh")
+tgt_mesh.Segment().NumberOfSegments(9,10,UseExisting=True)
+tgt_mesh.Quadrangle()
+
+# Define Projection 1D algorithm to project 1d mesh elements from group edgesF2 to edgesF1
+# It is actually not needed, just a demonstration
+proj1D = tgt_mesh.Projection1D( edgesF1 )
+# each vertex must be at the end of a connected group of edges (or a sole edge)
+proj1D.SourceEdge( edgesF2, src_mesh, v2F1, v2F2 )
+
+# Define 2D hypotheses to project triangles from f1 face of the source mesh to
+# f2 face in the target mesh. Vertices specify how to associate sides of faces
+proj2D = tgt_mesh.Projection2D( f2 )
+proj2D.SourceFace( f1, src_mesh, v1F1, v1F2, v2F1, v2F2 )
+
+# 2D hypotheses to project triangles from f2 of target mesh to the face opposite to f2.
+# Association of face sides is default
+proj2D = tgt_mesh.Projection2D( f2opp )
+proj2D.SourceFace( f2 )
+
+# 3D hypotheses to project prisms from the source to the target mesh
+proj3D = tgt_mesh.Projection3D()
+proj3D.SourceShape3D( box, src_mesh, v1F1, v1F2, v2F1, v2F2 )
+tgt_mesh.Compute()
+
+# Move the source mesh to visually compare the two meshes
+src_mesh.TranslateObject( src_mesh, smesh_builder.MakeDirStruct( 210, 0, 0 ), Copy=False)
