From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 10 Sep 2017 12:23:22 +0000 (+0300)
Subject: Use the same mesh for multiple instances of an object in scene exporter
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=44207448bbabc5fb2c89537168dbe3f2268f804e

Use the same mesh for multiple instances of an object in scene exporter
---

diff --git a/blender/io_mspgl/export_scene.py b/blender/io_mspgl/export_scene.py
index fcd634fb..08cce757 100644
--- a/blender/io_mspgl/export_scene.py
+++ b/blender/io_mspgl/export_scene.py
@@ -21,31 +21,56 @@ class SceneExporter:
 		object_export.compound = True
 		object_export.external_tech = self.external_tech
 
+		object_prototypes = {}
+		unique_objects = []
+		for o in objs:
+			if o.name in object_prototypes:
+				continue
+
+			clones = [o]
+			if not any(s.link=="OBJECT" for s in o.material_slots):
+				for u in objs:
+					if u is o:
+						continue
+					if u.data.name!=o.data.name:
+						continue
+					if u.technique!=o.technique:
+						continue
+					if any(s.link=="OBJECT" for s in u.material_slots):
+						continue
+
+					clones.append(u)
+
+			unique_objects.append(o)
+			for c in clones:
+				object_prototypes[c.name] = o
+
 		from .util import Progress
 		progress = Progress(context)
 		if self.resource_collection:
 			res_out = open_output(os.path.join(path, base+"_resources.mdc"))
 
 			# TODO Export techniques as separate items in the collection
-			for i, o in enumerate(objs):
+			for i, o in enumerate(unique_objects):
 				res_out.begin("object", '"{}.object"'.format(o.name))
 				progress.push_task(o.name, i/len(objs), (i+1)/len(objs))
 				object_export.export(context, res_out, [o], progress)
 				progress.pop_task()
 				res_out.end()
 		else:
+			object_export.separate_mesh = True
 			object_export.separate_tech = True
 			res_dir = os.path.join(path, base+"_resources")
 			if not os.path.exists(res_dir):
 				os.makedirs(res_dir)
-			for o in objs:
+			for i, o in enumerate(unique_objects):
 				obj_out = open_output(os.path.join(res_dir, o.name+".object"))
 				progress.push_task(o.name, i/len(objs), (i+1)/len(objs))
 				object_export.export(context, obj_out, [o], progress)
 				progress.pop_task()
 
 		for o in objs:
-			out_file.begin("object", '"{}.object"'.format(o.name))
+			out_file.begin("object", '"{}.object"'.format(object_prototypes[o.name].name))
 			# XXX Parent relationships screw up the location and rotation
 			out_file.write("position", o.location[0], o.location[1], o.location[2])
 			if o.rotation_mode=="AXIS_ANGLE":