import shapefile
import math
import os
-
+import json
def freeBordersGroup(meshFileIn, meshFileOut=""):
"""
return full path of the output mesh file
"""
smesh = smeshBuilder.New()
- smesh.SetEnablePublish( False ) # Set to False to avoid publish in study if not needed
+ if not salome.sg.hasDesktop():
+ smesh.SetEnablePublish( False ) # Set to False to avoid publish in study if not needed
([MESH], status) = smesh.CreateMeshesFromMED(meshFileIn)
nbAdded, MESH, addedBnd = MESH.MakeBoundaryElements( SMESH.BND_1DFROM2D, '', '', 0, [])
w.line([chaincoords])
w.record(chainName)
w.close()
+ return shapeFileName + '.shp'
def writeShapePoints(mcMesh, grpName, nodeChains, outputDirectory, offsetX=0., offsetY=0.):
prefix = os.path.basename(a[0]) # prefix = file name without extension
mcMesh = ml.MEDFileMesh.New(meshFile)
- dim = mcMesh.getSpaceDimension()
+ dim = mcMesh.getMeshDimension()
d1=-1 # when dimension 2, edges are dim -1
if dim == 3: # when dimension 3, edges are dim -2
d1=-2
groups = [mcMesh.getGroup(d1, name) for name in grp_names] # list of groups in their name order
+ filenames = []
for (grp, grpName) in zip(groups, grp_names):
fullGrpName = prefix + '_' + grpName
nodeChains = explodeGroup(grp, fullGrpName)
- writeShapeLines(mcMesh, fullGrpName, nodeChains, outputDirectory, offsetX, offsetY)
+ filename = writeShapeLines(mcMesh, fullGrpName, nodeChains, outputDirectory, offsetX, offsetY)
writeShapePoints(mcMesh, fullGrpName, nodeChains, outputDirectory, offsetX, offsetY)
+ filenames.append(filename)
+ shapesListFile = os.path.join(outputDirectory, "shapesList.json")
+ with open(shapesListFile, 'w') as f:
+ json.dump(filenames, f)
-
-def fitShapePointsToMesh(freeBorderShapefile, shapefileToAdjust, splitFreeBorder=True):
+def fitShapePointsToMesh(freeBorderShapefile, shapefileToAdjust, outputDirectory="", splitFreeBorder=True, splitShapeAdjusted=True):
"""
shapeFileToAdjust must be a closed line or polygon crossing freeBorderShapefile in 2 points.
- Find in shapeFileToAdjust and in freeBorderShapefile the two closest corresponding points and move the points in shapeFileToAdjust to correspond to the points found in freeBorderShapefile. Split shapeFileToAdjust in two parts (inside or outside freeBorder). If requested, split freeBorderShapefile in two parts.
+ Find in shapeFileToAdjust and in freeBorderShapefile the two closest corresponding points and move the points in shapeFileToAdjust to correspond to the points found in freeBorderShapefile. Split shapeFileToAdjust in two parts (inside or outside freeBorder). If requested, split freeBorderShapefile in two parts. Same for shapeFileToAdjust.
parameters:
freeBorderShapefile: a set of free border lines, as generated by the functions freeBordersGroup and exploreEdgeGroups.
shapefileToAdjust: a closed line or polygon, supposed to be drawn in qgis to pass as close as possible to the points to be connected, on the free border.
+ outputDirectory: if empty, write the resulting shapefiles in their respective directory, with the suffix '_adj', otherwise write in the outputDirectory.
splitFreeBorder: boolean default True
+ splitShapeAdjusted: boolean default True
"""
print(" === fitShapePointsToMesh", freeBorderShapefile, shapefileToAdjust)
shapes = sf.shapes()
sfta = sf.shape(0)
pdist =[]
+ x0 = -1.e30
+ y0 = -1.e30
+ discountLastSftaPoint = 0
for i,p in enumerate(sfta.points):
+ if i == 0:
+ x00 = p[0] # keep first point
+ y00 = p[1]
+ d = math.sqrt((x0-p[0])*(x0-p[0]) + (y0-p[1])*(y0-p[1])) # distance to previous point
+ x0 = p[0] # keep previous point
+ y0 = p[1]
+ if d < 1.e-5:
+ print("two consecutives points of shapefile To adjust are superposed, OK")
+ continue # do not take into account consecutive superposed points in shape to adjust
+ if i == len(sfta.points) -1:
+ d = math.sqrt((x00-p[0])*(x00-p[0]) + (y00-p[1])*(y00-p[1])) # distance between first and last point
+ if d < 1.e-5:
+ discountLastSftaPoint = 1
+ print("last point of shapefile To adjust is superposed to first point, last point discarded, OK")
+ continue # do not take into account last point if superposed to first point, in shape to adjust
dmin = 1.e30
jmin = -1
for j,pfb in enumerate(fbs.points):
else:
ifb1 = pdist[1][1]
ifb2 = pdist[0][1]
+ print("i1, i2, len(sfta.points)", i1, i2, len(sfta.points))
+ print("ifb1, ifb2, len(fbs.points)", ifb1, ifb2, len(fbs.points))
# --- write the adusted shapefile: free border closest points replaced with corresponding points
# on the free border. two polylines, one inside the domain, one outside
- a = os.path.splitext(shapefileToAdjust)
- shapefileAdjusted = a[0] + '_adj' + a[1]
- chainName = os.path.basename(a[0])
+ if outputDirectory == "":
+ outputDirectory = os.path.dirname(shapefileToAdjust)
+ a = os.path.splitext(os.path.basename(shapefileToAdjust))
+ shapefileAdjusted = os.path.join(outputDirectory, a[0] + '_adj' + a[1])
+ chainName = a[0] + '_adj'
w = shapefile.Writer(shapefileAdjusted)
w.shapeType = 3
w.field('name', 'C')
- chaincoords = []
- chaincoords.append(fbs.points[ifb1])
- for i in range(i1+1, i2):
- chaincoords.append(sfta.points[i])
- chaincoords.append(fbs.points[ifb2])
- w.line([chaincoords])
- w.record(chainName + '_0')
-
- chaincoords = []
- chaincoords.append(fbs.points[ifb2])
- if i2+1 < len(sfta.points):
- for i in range(i2+1, len(sfta.points)):
+ if splitShapeAdjusted:
+ chaincoords = []
+ chaincoords.append(fbs.points[ifb1])
+ for i in range(i1+1, i2):
+ chaincoords.append(sfta.points[i])
+ chaincoords.append(fbs.points[ifb2])
+ w.line([chaincoords])
+ w.record(chainName + '_0')
+
+ chaincoords = []
+ chaincoords.append(fbs.points[ifb2])
+ if i2+1 < len(sfta.points):
+ for i in range(i2+1, len(sfta.points) -discountLastSftaPoint):
+ chaincoords.append(sfta.points[i])
+ for i in range(i1):
chaincoords.append(sfta.points[i])
- for i in range(i1):
- chaincoords.append(sfta.points[i])
- chaincoords.append(fbs.points[ifb1])
- w.line([chaincoords])
- w.record(chainName + '_1')
+ chaincoords.append(fbs.points[ifb1])
+ w.line([chaincoords])
+ w.record(chainName + '_1')
+ else:
+ chaincoords = []
+ chaincoords.append(fbs.points[ifb1])
+ for i in range(i1+1, i2):
+ chaincoords.append(sfta.points[i])
+ chaincoords.append(fbs.points[ifb2])
+ if i2+1 < len(sfta.points):
+ for i in range(i2+1, len(sfta.points) -discountLastSftaPoint):
+ chaincoords.append(sfta.points[i])
+ for i in range(i1):
+ chaincoords.append(sfta.points[i])
+ if discountLastSftaPoint:
+ chaincoords.append(fbs.points[ifb1]) # close shape when first point if superposed with last
+ w.line([chaincoords])
+ w.record(chainName)
+
w.close()
if splitFreeBorder:
# write the free border split in two polylines (cut by the adjusted shapefile)
- a = os.path.splitext(freeBorderShapefile)
- freeBorderSplit = a[0] + '_split' + a[1]
- chainName = os.path.basename(a[0])
+ if outputDirectory == "":
+ outputDirectory = os.path.dirname(freeBorderShapefile)
+ a = os.path.splitext(os.path.basename(freeBorderShapefile))
+ freeBorderSplit = os.path.join(outputDirectory, a[0] + '_split' + a[1])
+ chainName = a[0] + '_split'
w = shapefile.Writer(freeBorderSplit)
w.shapeType = 3
