Add option to triangulate faces

Implementation/.gitignore

@@ -2,7 +2,7 @@
 *.pyc
 *.blend[1-9]
 venv/
-blender_tester.py
+zagrebgis.zip
 
 
 # Created by https://www.gitignore.io/api/python,pycharm+all,unrealengine,visualstudiocode

Implementation/ZagrebGIS/zagrebgis/__init__.py

@@ -23,7 +23,7 @@
     "name": "Zagreb GIS",
     "description": "Generates a Zagreb district model based on real data.",
     "author": "Luka Mesarić",
-    "version": (1, 0),
+    "version": (1, 1),
     "blender": (2, 82, 0),
     "location": "View3D > Sidebar > ZagrebGIS Tab",
     "tracker_url": "https://github.com/LMesaric/BSc-Thesis-FER-2020/issues",

Implementation/ZagrebGIS/zagrebgis/triangulator.py

@@ -0,0 +1,34 @@
+#    Zagreb GIS - Generate a Zagreb district model based on real data
+#    Copyright (C) 2020  Luka Mesarić ([email protected])
+#
+#    This program 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.
+#
+#    This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+import bpy
+
+
+def triangulate_all():
+    """
+    Converts all faces in all meshes in the scene to triangles.
+    """
+
+    bpy.ops.object.select_all(action='SELECT')
+    bpy.ops.object.mode_set(mode='EDIT')
+
+    bpy.ops.mesh.select_all(action='SELECT')
+    bpy.ops.mesh.quads_convert_to_tris()
+    bpy.ops.mesh.select_all(action='DESELECT')
+
+    bpy.ops.object.mode_set(mode='OBJECT')
+    bpy.ops.object.select_all(action='DESELECT')

Implementation/ZagrebGIS/zagrebgis/zagreb_gis.py

@@ -28,6 +28,7 @@
 from zagrebgis.terrain_creator import create_terrain
 from zagrebgis.tree_creator import create_trees_many
 from zagrebgis.tree_fetcher import get_all_trees
+from zagrebgis.triangulator import triangulate_all
 
 
 class VIEW3D_OT_ZagrebGIS(bpy.types.Operator):
@@ -41,6 +42,7 @@ class VIEW3D_OT_ZagrebGIS(bpy.types.Operator):
     long_top_right: bpy.props.FloatProperty(options={'HIDDEN'})
     terrain_height_scale: bpy.props.FloatProperty(options={'HIDDEN'})
     add_trees_bool: bpy.props.BoolProperty(options={'HIDDEN'})
+    convert_to_tris: bpy.props.BoolProperty(options={'HIDDEN'})
 
     def execute(self, context):
         if not self._check_input():
@@ -86,7 +88,14 @@ def execute(self, context):
                 print(f'GIS INFO: Trees created --- {time.time() - start_time:.2f}s')
 
             else:
-                print('Skipping generation of trees')
+                print('GIS INFO: Skipping generation of trees')
+
+            if self.convert_to_tris:
+                start_time = time.time()
+                triangulate_all()
+                print(f'GIS INFO: Triangulated all meshes --- {time.time() - start_time:.2f}s')
+            else:
+                print('GIS INFO: Skipping mesh triangulation')
 
             self.report({'INFO'}, "Everything was successfully generated")
             print(f'GIS INFO: Total runtime --- {time.time() - start_time_total:.2f}s')

Implementation/ZagrebGIS/zagrebgis/zagreb_gis_panel.py

@@ -52,6 +52,10 @@ def draw(self, context):
 
         layout.row().prop(scene, "global_add_trees_bool", text="Generate trees")
 
+        layout.row().separator()
+
+        layout.row().prop(scene, "global_convert_to_tris", text="Use only triangles")
+
         layout.row().separator()
         layout.row().separator()
 
@@ -65,6 +69,7 @@ def draw(self, context):
         props.long_top_right = scene.global_long_top_right
         props.terrain_height_scale = scene.global_terrain_height_scale
         props.add_trees_bool = scene.global_add_trees_bool
+        props.convert_to_tris = scene.global_convert_to_tris
 
 
 def register():
@@ -76,11 +81,13 @@ def register():
     s.global_long_top_right = FloatProperty(default=15.9742, min=-180.0, max=180.0, step=1, precision=6)
     s.global_terrain_height_scale = FloatProperty(default=1, min=0, soft_max=3, step=1, precision=3)
     s.global_add_trees_bool = BoolProperty(default=True)
+    s.global_convert_to_tris = BoolProperty(default=True)
 
 
 # noinspection PyUnresolvedReferences
 def unregister():
     s = bpy.types.Scene
+    del s.global_convert_to_tris
     del s.global_add_trees_bool
     del s.global_terrain_height_scale
     del s.global_long_top_right