rename

tools/Paraview macros/etvk_voxels.py

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+# Copyright (C) 2015-2021: The University of Edinburgh
+#                 Authors: Craig Warren, Antonis Giannopoulos, and John Hartley
+#
+# This file is part of gprMax.
+#
+# gprMax is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# gprMax is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with gprMax.  If not, see <http://www.gnu.org/licenses/>.
+
+import mmap
+import os
+from xml.etree import ElementTree as ET
+import json
+
+def display_pmls_new(pmlthick, dx_dy_dz, nx_ny_nz):
+    """Display PMLs as box sources using PML thickness values.
+        Only suitable for gprMax > v.4
+
+    Args:
+        pmlthick (tuple): PML thickness values for each slab (cells)
+        dx_dy_dz (tuple): Spatial resolution (m)
+        nx_ny_dz (tuple): Domain size (cells)
+    """
+
+    pml_names = ['x0', 'y0', 'z0', 'xmax', 'ymax', 'zmax']
+    pmls = dict.fromkeys(pml_names, None)
+
+    if pmlthick[0] != 0:
+        x0 = Box(Center=[pmlthick[0] * dx_dy_dz[0] / 2,
+                         nx_ny_nz[1] * dx_dy_dz[1] / 2,
+                         nx_ny_nz[2] * dx_dy_dz[2] / 2],
+                 XLength=pmlthick[0] * dx_dy_dz[0],
+                 YLength=nx_ny_nz[1] * dx_dy_dz[1],
+                 ZLength=nx_ny_nz[2] * dx_dy_dz[2])
+        pmls['x0'] = x0
+
+    if pmlthick[3] != 0:
+        xmax = Box(Center=[dx_dy_dz[0] * (nx_ny_nz[0] - pmlthick[3] / 2),
+                           nx_ny_nz[1] * dx_dy_dz[1] / 2,
+                           nx_ny_nz[2] * dx_dy_dz[2] / 2],
+                   XLength=pmlthick[3] * dx_dy_dz[0],
+                   YLength=nx_ny_nz[1] * dx_dy_dz[1],
+                   ZLength=nx_ny_nz[2] * dx_dy_dz[2])
+        pmls['xmax'] = xmax
+
+    if pmlthick[1] != 0:
+        y0 = Box(Center=[nx_ny_nz[0] * dx_dy_dz[0] / 2,
+                         pmlthick[1] * dx_dy_dz[1] / 2,
+                         nx_ny_nz[2] * dx_dy_dz[2] / 2],
+                 XLength=nx_ny_nz[0] * dx_dy_dz[0],
+                 YLength=pmlthick[1] * dx_dy_dz[1],
+                 ZLength=nx_ny_nz[2] * dx_dy_dz[2])
+        pmls['y0'] = y0
+
+    if pmlthick[4] != 0:
+        ymax = Box(Center=[nx_ny_nz[0] * dx_dy_dz[0] / 2,
+                           dx_dy_dz[1] * (nx_ny_nz[1] - pmlthick[4] / 2),
+                           nx_ny_nz[2] * dx_dy_dz[2] / 2],
+                   XLength=nx_ny_nz[0] * dx_dy_dz[0],
+                   YLength=pmlthick[4] * dx_dy_dz[1],
+                   ZLength=nx_ny_nz[2] * dx_dy_dz[2])
+        pmls['ymax'] = ymax
+
+    if pmlthick[2] != 0:
+        z0 = Box(Center=[nx_ny_nz[0] * dx_dy_dz[0] / 2,
+                         nx_ny_nz[1] * dx_dy_dz[1] / 2,
+                         pmlthick[2] * dx_dy_dz[2] / 2],
+                 XLength=nx_ny_nz[0] * dx_dy_dz[0],
+                 YLength=nx_ny_nz[1] * dx_dy_dz[1],
+                 ZLength=pmlthick[2] * dx_dy_dz[2])
+        pmls['z0'] = z0
+
+    if pmlthick[5] != 0:
+        zmax = Box(Center=[nx_ny_nz[0] * dx_dy_dz[0] / 2,
+                           nx_ny_nz[1] * dx_dy_dz[1] / 2,
+                           dx_dy_dz[2] * (nx_ny_nz[2] - pmlthick[5] / 2)],
+                   XLength=nx_ny_nz[0] * dx_dy_dz[0],
+                   YLength=nx_ny_nz[1] * dx_dy_dz[1],
+                   ZLength=pmlthick[5] * dx_dy_dz[2])
+        pmls['zmax'] = zmax
+
+    # Name PML sources and set opacity
+    tmp = []
+    for pml in pmls:
+        if pmls[pml]:
+            RenameSource('PML - ' + pml, pmls[pml])
+            Hide(pmls[pml], renderview)
+            tmp.append(pmls[pml])
+
+    # Create a group of PMLs to switch on/off easily
+    if tmp:
+        pml_gp = AppendDatasets(Input=tmp)
+        RenameSource('PML - All', pml_gp)
+        pml_view = Show(pml_gp)
+        pml_view.Opacity = 0.5
+
+def load_src_rx(srcs, dl):
+    # Display sources and receivers as Paraview box sources
+    for item in srcs:
+        p = item['position']
+        n = item['name']
+        src_rx = Box(Center=[p[0] + dl[0]/2,
+                             p[1] + dl[1]/2,
+                             p[2] + dl[2]/2],
+                     XLength=dl[0], YLength=dl[1], ZLength=dl[2])
+        RenameSource(n, src_rx)
+        Show(src_rx)
+
+
+def load_materials(ml):
+    # create a threshold filter for each material type
+    for i, m in enumerate(ml):
+        threshold = Threshold(Input=model)
+        threshold.ThresholdRange = [i, i]
+        threshold.Scalars = ['CELLS', 'Material']
+        RenameSource(m, threshold)
+
+        # Show data in view, except for free_space
+        if i != 1:
+            thresholddisplay = Show(threshold, renderview)
+        thresholddisplay.ColorArrayName = ['CELLS', 'Material']
+        threshold.UpdatePipeline()
+
+from paraview.simple import *
+
+# Get whatever source is loaded (should be model)
+model = GetActiveSource()
+
+# Get active view
+renderview = GetActiveView()
+
+# Show Data Axes Grid
+renderview.AxesGrid.Visibility = 1
+
+# Hide display of root data
+Hide(model)
+
+# one file only for now
+
+fp = model.FileName[0]
+
+# materials string
+ms = None
+
+# load json embedded in comment of line 3
+with open(fp, 'rb') as f:
+    f.readline()
+    f.readline()
+    # comments
+    c = f.readline().decode()
+
+# strip comment tags
+c = c[5:-5]
+# model information
+c = json.loads(c)
+
+# discretisation
+dl = c['dx_dy_dz']
+# n voxels
+nl = c['nx_ny_nz']
+
+# load material filters
+try:
+    ml = c['Materials']
+    load_materials(ml)
+except KeyError:
+    print('No Materials to load')
+
+# load sources
+try:
+    srcs = c['Sources']
+    load_src_rx(srcs, dl)
+except KeyError:
+    print('No sources to load')
+
+# load rxs
+try:
+    rxs = c['Receivers']
+    load_src_rx(rxs, dl)
+except KeyError:
+    print('No receivers to load')
+
+# load pmls
+try:
+    pt = c['PMLthickness']
+    display_pmls_new(pt, dl, nl)
+except KeyError:
+    print('No PMLs to load')
+
+RenderAllViews()
+
+# Reset view to fit data
+renderview.ResetCamera()
+
+# Show color bar/color legend
+# thresholdDisplay.SetScalarBarVisibility(renderview, False)