Add Convert To Mesh Sequence button to Stop Motion OBJ object properties panel (#155)

* Add Convert to Sequence button to Stop Motion OBJ panel

Still doesn't work

* Code cleanup

I guess it works

Author: neverhood311

src/__init__.py

@@ -1,7 +1,7 @@
 # ##### BEGIN GPL LICENSE BLOCK #####
 #
 #   Stop motion OBJ: A Mesh sequence importer for Blender
-#   Copyright (C) 2016-2021  Justin Jensen
+#   Copyright (C) 2016-2022  Justin Jensen
 #
 #   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
@@ -25,7 +25,7 @@
     "name": "Stop motion OBJ",
     "description": "Import a sequence of OBJ (or STL or PLY or X3D) files and display them each as a single frame of animation. This add-on also supports the .STL, .PLY, and .X3D file formats.",
     "author": "Justin Jensen",
-    "version": (2, 2, 0, "alpha.17"),
+    "version": (2, 2, 0, "alpha.18"),
     "blender": (2, 83, 0),
     "location": "File > Import > Mesh Sequence",
     "warning": "",

src/panels.py

@@ -1,7 +1,7 @@
 # ##### BEGIN GPL LICENSE BLOCK #####
 #
 #   Stop motion OBJ: A Mesh sequence importer for Blender
-#   Copyright (C) 2016-2021  Justin Jensen
+#   Copyright (C) 2016-2022  Justin Jensen
 #
 #   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
@@ -36,10 +36,13 @@ class SMO_PT_MeshSequencePanel(bpy.types.Panel):
 
     @classmethod
     def poll(cls, context):
-        return context.object.mesh_sequence_settings.initialized == True
+        return context.object.type == 'MESH'
 
     def draw(self, context):
-        pass
+        if context.object.type == 'MESH' and context.object.mesh_sequence_settings.initialized == False:
+            # show button to convert the object into a mesh sequence
+            self.layout.operator(ConvertToMeshSequence.bl_idname, icon="ONIONSKIN_ON")
+
 
 
 class SMO_PT_MeshSequencePlaybackPanel(bpy.types.Panel):
@@ -237,7 +240,7 @@ def execute(self, context):
                 if self.sequenceSettings.showAsSingleMesh:
                     seqObj = newMeshSequence('SingleMesh')
                 else:
-                    seqObj = newMeshSequence('EmptyMesh')
+                    seqObj = newMeshSequence('emptyMesh')
 
                 global_matrix = axis_conversion(from_forward=b_axis_forward,from_up=b_axis_up).to_4x4()
                 seqObj.matrix_world = global_matrix
@@ -432,10 +435,16 @@ def execute(self, context):
             return {'CANCELLED'}
 
         # hijack the mesh from the selected object and add it to a new mesh sequence
-        msObj = newMeshSequence()
+        msObj = newMeshSequence('emptyMesh')
         msObj.mesh_sequence_settings.isImported = False
         addMeshToSequence(msObj, obj.data)
 
+        # make sure the new mesh sequence has the same transform (especially the location) as context.object
+        msObj.location = obj.location
+        msObj.scale = obj.scale
+        msObj.rotation_euler = obj.rotation_euler
+        msObj.rotation_quaternion = obj.rotation_quaternion
+
         objName = obj.name
         msObj.name = objName + '_sequence'
 

src/stop_motion_obj.py

@@ -1,7 +1,7 @@
 # ##### BEGIN GPL LICENSE BLOCK #####
 #
 #   Stop motion OBJ: A Mesh sequence importer for Blender
-#   Copyright (C) 2016-2021  Justin Jensen
+#   Copyright (C) 2016-2022  Justin Jensen
 #
 #   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
@@ -448,12 +448,11 @@ def deleteLinkedMeshMaterials(mesh, maxMaterialUsers=1, maxImageUsers=0):
 
 
 def newMeshSequence(meshName):
-    bpy.ops.object.add(type='MESH')
+    theMesh = bpy.data.meshes.new(createUniqueName(meshName, bpy.data.meshes))
+    theObj = bpy.data.objects.new(createUniqueName('sequence', bpy.data.objects), theMesh)
+    bpy.context.collection.objects.link(theObj)
+    
     # this new object should be the currently-selected object
-    theObj = bpy.context.object
-    theObj.name = 'sequence'
-    theMesh = theObj.data
-    theMesh.name = createUniqueName(meshName, bpy.data.meshes)
     theMesh.use_fake_user = True
     theMesh.inMeshSequence = True
 

src/version.py

@@ -2,5 +2,5 @@
 # (major, minor, revision, development)
 # example dev version: (1, 2, 3, "beta.4")
 # example release version: (2, 3, 4)
-currentScriptVersion = (2, 2, 0, "alpha.17")
+currentScriptVersion = (2, 2, 0, "alpha.18")
 legacyScriptVersion = (2, 0, 2, "legacy")