auto width origin for voxel plot

fusion-energy · Jul 17, 2023 · 873bf0a · 873bf0a
1 parent beafda0
commit 873bf0a
Showing 1 changed file with 21 additions and 6 deletions.
diff --git a/tasks/task_03_making_CSG_geometry/3_viewing_the_geometry_as_vtk.ipynb b/tasks/task_03_making_CSG_geometry/3_viewing_the_geometry_as_vtk.ipynb
@@ -1,6 +1,7 @@
 {
  "cells": [
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -16,6 +17,7 @@
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -80,9 +82,9 @@
     "\n",
     "universe = openmc.Universe(cells=[central_sol_cell,central_shield_cell,first_wall_cell, breeder_blanket_cell])\n",
     "\n",
-    "geom = openmc.Geometry(universe)\n",
+    "my_geometry = openmc.Geometry(universe)\n",
     "\n",
-    "geom.export_to_xml()\n"
+    "my_geometry.export_to_xml()\n"
    ]
   },
   {
@@ -104,10 +106,22 @@
     "# makes the 3d \"cube\" style geometry\n",
     "vox_plot = openmc.Plot()\n",
     "vox_plot.type = 'voxel'\n",
-    "vox_plot.width = (1500., 1500., 1500.)\n",
-    "vox_plot.pixels = (200, 200, 200)\n",
+    "\n",
+    "# makes sure the bounds of the plot include the whole geometry\n",
+    "vox_plot.width = my_geometry.bounding_box.width\n",
+    "\n",
+    "# makes sure the voxel plot is centered at the center of the geometry\n",
+    "vox_plot.origin = my_geometry.bounding_box.center\n",
+    "\n",
+    "# sets the pixels in each direction to be proportional to the size of the geometry in that direction\n",
+    "# Your computer RAM will limit the number of pixels you can set in each direction.\n",
+    "# The * 0.1 part of this line reduces the number of pixels in each direction to a reasonable amount but this could be increased if you want more resolution.\n",
+    "vox_plot.pixels = [int(w* 0.1) for w in my_geometry.bounding_box.width]\n",
+    "\n",
     "vox_plot.color_by = 'material'\n",
-    "vox_plot.colors = {copper: 'blue'}  # materials can be coloured using this command\n",
+    "# materials can be coloured using this command and the available openmc colors\n",
+    "# vox_plot.colors = {copper: 'blue'}\n",
+    "\n",
     "vox_plot.to_vtk(output='voxel_plot.vti')"
    ]
   },
@@ -122,6 +136,7 @@
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -147,7 +162,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.10"
+   "version": "3.8.13"
   }
  },
  "nbformat": 4,