[spns#34841] Intersect2DMeshWith1DLine: Add test-case

diff --git a/src/MEDCoupling_Swig/MEDCoupling2DInsterct1DCrossedLines.py b/src/MEDCoupling_Swig/MEDCoupling2DInsterct1DCrossedLines.py
new file mode 100644 (file)
index 0000000..558682f
--- /dev/null
+++ b/src/MEDCoupling_Swig/MEDCoupling2DInsterct1DCrossedLines.py
@@ -0,0 +1,73 @@
+import os
+import numpy as np
+import medcoupling as mc
+import MEDLoader as ml
+
+SPNS_34841_ROOT_DIR='/tmp'
+
+def buildMesh2D():
+    targetMesh = ml.MEDCouplingUMesh("MyMesh2D",2)
+    targetMesh.allocateCells(1)
+    targetCoords = [0.,  0.,  1.,  0.,  1.,  1.,  0.,  1.]
+    myCoords = ml.DataArrayDouble(targetCoords, 4,2)
+    myCoords.setInfoOnComponents(["X","Y"])
+    
+    targetMesh.setCoords(myCoords)
+    targetMesh.insertNextCell(ml.NORM_QUAD4,[ 0, 1, 2, 3])
+    targetMesh.finishInsertingCells()    
+    targetMesh.checkConsistency()
+
+    meshMEDFile = ml.MEDFileUMesh()
+    meshMEDFile.setMeshAtLevel(0,targetMesh)
+    meshMEDFile.write(os.path.join(SPNS_34841_ROOT_DIR,'SingleMesh2D.med'),2)
+    return targetMesh
+
+def buildMesh1D():
+    targetMesh = ml.MEDCouplingUMesh.New()
+    targetMesh.setName("MyMesh1D")
+    targetMesh.setMeshDimension(1)
+    targetMesh.allocateCells(5)
+    targetCoords = np.arange(6*2, dtype=float)
+
+    # first horizontal edge
+    targetCoords[0]= float( 0.);    targetCoords[1]= float( 0.5);  #0
+    targetCoords[2]= float( 0.5);    targetCoords[3]= float(  0.5); #1
+    targetMesh.insertNextCell(ml.NORM_SEG2,2, [0, 1])
+    # second horizontal edge
+    targetCoords[4]= float( 1.);    targetCoords[5]= float(  0.5); #2
+    targetMesh.insertNextCell(ml.NORM_SEG2,2, [1, 2])
+    # first vertical edge
+    targetCoords[6]= float( 0.5);    targetCoords[7]= float(  1.); #3
+    targetMesh.insertNextCell(ml.NORM_SEG2,2, [3, 1])
+    # second vertical edge
+    targetCoords[8]= float( 0.5);    targetCoords[9]= float( 0.0); #4
+    targetMesh.insertNextCell(ml.NORM_SEG2,2, [1, 4])
+    # third vertical edge
+    targetCoords[10]= float( 0.5);    targetCoords[11]= float( 0.); #5
+    targetMesh.insertNextCell(ml.NORM_SEG2,2, [1, 5])
+    # finish
+    targetMesh.finishInsertingCells()    
+
+    myCoords = ml.DataArrayDouble(targetCoords.tolist(), 6,2)
+    myCoords.setInfoOnComponents(["X","Y"])
+    targetMesh.setCoords(myCoords)
+    targetMesh.checkConsistency()
+    meshMEDFile = ml.MEDFileUMesh()
+    meshMEDFile.setMeshAtLevel(0,targetMesh)
+    meshMEDFile.write(os.path.join(SPNS_34841_ROOT_DIR,'Single_Mesh1D.med'),2)
+    return targetMesh
+
+if __name__ == '__main__':
+        
+    single2DMesh = buildMesh2D()
+    single1DMesh = buildMesh1D()
+    
+    meshMEDFile = ml.MEDFileUMesh()
+    meshMEDFile.setMeshAtLevel(0,single1DMesh)
+    meshMEDFile.write(os.path.join(SPNS_34841_ROOT_DIR,'reduced_1D.med'),2)
+
+    # INTERSECTION
+    partition, _, _, _ = mc.MEDCouplingUMesh.Intersect2DMeshWith1DLine(single2DMesh, single1DMesh, 1e-8)
+    meshMEDFile = ml.MEDFileUMesh()
+    meshMEDFile.setMeshAtLevel(0,partition)
+    meshMEDFile.write(os.path.join(SPNS_34841_ROOT_DIR,'reduced_partition.med'),2)
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