From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 13 Feb 2021 15:39:45 +0000 (+0200)
Subject: Add an exporter setting to export all selected objects or meshes at once
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=b35fe097720395c09332cf0813ef6218acb551b6;p=libs%2Fgl.git

Add an exporter setting to export all selected objects or meshes at once
---

diff --git a/blender/io_mspgl/__init__.py b/blender/io_mspgl/__init__.py
index 8ff35844..bccff005 100644
--- a/blender/io_mspgl/__init__.py
+++ b/blender/io_mspgl/__init__.py
@@ -40,6 +40,7 @@ class ExportMspGLBase(ExportHelper):
 			setattr(exporter, k, v)
 
 class ExportMspGLMeshBase(ExportMspGLBase):
+	export_all: bpy.props.BoolProperty(name="Export all selected", description="Export all selected objects (use generated filenames)", default=False)
 	use_strips: bpy.props.BoolProperty(name="Use strips", description="Combine faces into triangle strips", default=True)
 	use_degen_tris: bpy.props.BoolProperty(name="Use degen tris", description="Concatenate triangle strips with degenerate triangles", default=False)
 
@@ -47,6 +48,9 @@ class ExportMspGLMeshBase(ExportMspGLBase):
 		self.general_col = self.layout.column()
 
 		col = self.layout.column()
+		if len(context.selected_objects)>1:
+			col.label(text="Object selection")
+			col.prop(self, "export_all")
 		col.label(text="Triangle strips")
 		col.prop(self, "use_strips")
 		col.prop(self, "use_degen_tris")
diff --git a/blender/io_mspgl/export_mesh.py b/blender/io_mspgl/export_mesh.py
index 0bf7b83a..974685b3 100644
--- a/blender/io_mspgl/export_mesh.py
+++ b/blender/io_mspgl/export_mesh.py
@@ -1,4 +1,5 @@
 import itertools
+import os
 import bpy
 import mathutils
 
@@ -7,6 +8,7 @@ class MeshExporter:
 		self.show_progress = True
 		self.use_strips = True
 		self.use_degen_tris = False
+		self.export_all = False
 
 	def join_strips(self, strips):
 		big_strip = []
@@ -26,15 +28,26 @@ class MeshExporter:
 		return big_strip
 
 	def export_to_file(self, context, out_fn):
-		obj = context.active_object
+		if self.export_all:
+			objs = [o for o in context.selected_objects if o.type=="MESH"]
+		else:
+			objs = [context.active_object]
 
 		from .util import Progress
 
+		path, base = os.path.split(out_fn)
+		base, ext = os.path.splitext(base)
+
 		progress = Progress(self.show_progress and context)
-		progress.push_task("", 0.0, 0.95)
-		resource = self.export_mesh(context, obj, progress)
+		for i, obj in enumerate(objs):
+			if self.export_all:
+				out_fn = os.path.join(path, obj.data.name+ext)
 
-		resource.write_to_file(out_fn)
+			progress.push_task_slice(obj.data.name, i, len(objs))
+			resource = self.export_mesh(context, obj, progress)
+
+			resource.write_to_file(out_fn)
+			progress.pop_task()
 
 	def export_mesh(self, context, mesh_or_obj, progress):
 		from .mesh import Mesh, create_mesh_from_object
diff --git a/blender/io_mspgl/export_object.py b/blender/io_mspgl/export_object.py
index a86ee26b..dcb5623f 100644
--- a/blender/io_mspgl/export_object.py
+++ b/blender/io_mspgl/export_object.py
@@ -7,6 +7,7 @@ class ObjectExporter:
 		self.use_strips = True
 		self.use_degen_tris = False
 		self.use_textures = True
+		self.export_all = False
 		self.collection = False
 		self.shared_resources = True
 		self.export_lods = True
@@ -53,36 +54,46 @@ class ObjectExporter:
 		return material_map_export
 
 	def export_to_file(self, context, out_fn):
-		obj = context.active_object
+		if self.export_all:
+			objs = [o for o in context.selected_objects if o.type=="MESH"]
+		else:
+			objs = [context.active_object]
 
 		from .util import Progress
 		progress = Progress(self.show_progress and context)
 
 		path, base = os.path.split(out_fn)
-		base = os.path.splitext(base)[0]
+		base, ext = os.path.splitext(base)
 
 		resources = {}
-		self.export_object_resources(context, obj, resources, progress)
-
-		obj_res = self.export_object(context, obj, progress, resources=resources)
-		refs = obj_res.collect_references()
-		if not self.shared_resources:
-			numbers = {}
-			for r in refs:
-				ext = os.path.splitext(r.name)[1]
-				n = numbers.get(ext, 0)
-				if n>0:
-					r.name = "{}_{}{}".format(base, n, ext)
-				else:
-					r.name = base+ext
-				numbers[ext] = n+1
+		for i, obj in enumerate(objs):
+			if self.export_all:
+				out_fn = os.path.join(path, obj.name+ext)
 
-		if self.collection:
-			obj_res.write_collection(out_fn)
-		else:
-			for r in refs:
-				r.write_to_file(os.path.join(path, r.name))
-			obj_res.write_to_file(out_fn)
+			progress.push_task_slice(obj.name, i, len(objs))
+			self.export_object_resources(context, obj, resources, progress)
+
+			obj_res = self.export_object(context, obj, progress, resources=resources)
+			refs = obj_res.collect_references()
+			if not self.shared_resources:
+				numbers = {}
+				for r in refs:
+					res_ext = os.path.splitext(r.name)[1]
+					n = numbers.get(res_ext, 0)
+					if n>0:
+						r.name = "{}_{}{}".format(base, n, res_ext)
+					else:
+						r.name = base+res_ext
+					numbers[res_ext] = n+1
+
+			if self.collection:
+				obj_res.write_collection(out_fn)
+			else:
+				for r in refs:
+					r.write_to_file(os.path.join(path, r.name))
+				obj_res.write_to_file(out_fn)
+
+			progress.pop_task()
 
 	def export_object_resources(self, context, obj, resources, progress, material_maps=None):
 		if material_maps is None: