Update for Blender 3.x

Pull Request #3

io_scene_3ds/__init__.py

@@ -34,8 +34,8 @@ import bpy
 bl_info = {
     "name": "Autodesk 3DS format",
     "author": "Bob Holcomb, Campbell Barton, Andreas Atteneder, Sebastian Schrand",
-    "version": (2, 1, 0),
-    "blender": (2, 82, 0),
+    "version": (2, 2, 0),
+    "blender": (3, 0, 0),
     "location": "File > Import",
     "description": "Import 3DS, meshes, uvs, materials, textures, "
                    "cameras & lamps",

io_scene_3ds/export_3ds.py

@@ -16,8 +16,6 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
-# <pep8 compliant>
-
 # Script copyright (C) Bob Holcomb
 # Contributors: Campbell Barton, Bob Holcomb, Richard Lärkäng, Damien McGinnes, Mark Stijnman, Sebastian Sille
 
@@ -647,8 +645,8 @@ def make_material_chunk(material, image):
 
     name_str = material.name if material else "None"
 
-    if image:
-        name_str += image.name
+    #if image:
+    #    name_str += image.name
 
     name.add_variable("name", _3ds_string(sane_name(name_str)))
     material_chunk.add_subchunk(name)
@@ -672,6 +670,7 @@ def make_material_chunk(material, image):
         material_chunk.add_subchunk(make_percent_subchunk(MATSHIN2, wrap.specular))
         material_chunk.add_subchunk(make_percent_subchunk(MATSHIN3, wrap.metallic))
         material_chunk.add_subchunk(make_percent_subchunk(MATTRANS, 1 - wrap.alpha))
+        material_chunk.add_subchunk(make_percent_subchunk(MATSELFILPCT, wrap.emission_strength))
         material_chunk.add_subchunk(shading)
 
         if wrap.base_color_texture:
@@ -706,13 +705,10 @@ def make_material_chunk(material, image):
             normal = [wrap.normalmap_texture]
             bump = wrap.normalmap_strength
             b_pct = min(bump, 1)
-            bumpval = min(999, (bump * 100))  # 3ds max bump = 999
-            strength = _3ds_chunk(MAT_BUMP_PERCENT)
-            strength.add_variable("bump_pct", _3ds_ushort(int(bumpval)))
             matmap = make_material_texture_chunk(MAT_BUMPMAP, normal, b_pct)
             if matmap:
                 material_chunk.add_subchunk(matmap)
-                material_chunk.add_subchunk(strength)
+                material_chunk.add_subchunk(make_percent_subchunk(MAT_BUMP_PERCENT, b_pct))
 
         if wrap.roughness_texture:
             roughness = [wrap.roughness_texture]
@@ -722,7 +718,7 @@ def make_material_chunk(material, image):
                 material_chunk.add_subchunk(matmap)
 
         if wrap.emission_color_texture:
-            e_pct = sum(wrap.emission_color[:]) * .25
+            e_pct = wrap.emission_strength
             emission = [wrap.emission_color_texture]
             matmap = make_material_texture_chunk(MAT_SELFIMAP, emission, e_pct)
             if matmap:
@@ -909,8 +905,8 @@ def make_faces_chunk(tri_list, mesh, materialDict):
                 context_face_array = unique_mats[ma, img][1]
             except:
                 name_str = ma if ma else "None"
-                if img:
-                    name_str += img
+                #if img:
+                #    name_str += img
 
                 context_face_array = _3ds_array()
                 unique_mats[ma, img] = _3ds_string(sane_name(name_str)), context_face_array
@@ -1171,7 +1167,7 @@ def save(operator,
          ):
 
     import time
-    from bpy_extras.io_utils import create_derived_objects, free_derived_objects
+    #from bpy_extras.io_utils import create_derived_objects, free_derived_objects
 
     """Save the Blender scene to a 3ds file."""
 
@@ -1187,7 +1183,7 @@ def save(operator,
 
     scene = context.scene
     layer = context.view_layer
-    #depsgraph = context.evaluated_depsgraph_get()
+    depsgraph = context.evaluated_depsgraph_get()
 
     # Initialize the main chunk (primary):
     primary = _3ds_chunk(PRIMARY)
@@ -1235,7 +1231,9 @@ def save(operator,
 
     for ob in objects:
         # get derived objects
-        free, derived = create_derived_objects(scene, ob)
+        #free, derived = create_derived_objects(scene, ob)
+        derived_dict = bpy_extras.io_utils.create_derived_objects(depsgraph, [ob])
+        derived = derived_dict.get(ob)
 
         if derived is None:
             continue
@@ -1244,7 +1242,6 @@ def save(operator,
             if ob.type not in {'MESH', 'CURVE', 'SURFACE', 'FONT', 'META'}:
                 continue
 
-            #ob_derived_eval = ob_derived.evaluated_get(depsgraph)
             try:
                 data = ob_derived.to_mesh()
             except:
@@ -1288,8 +1285,8 @@ def save(operator,
 
                 # ob_derived_eval.to_mesh_clear()
 
-        if free:
-            free_derived_objects(ob)
+        #if free:
+        #    free_derived_objects(ob)
 
     # Make material chunks for all materials used in the meshes:
     for ma_image in materialDict.values():

io_scene_3ds/import_3ds.py

@@ -65,6 +65,7 @@ MAT_SHIN2 = 0xA041  # Shininess of the object/material (percent)
 MAT_SHIN3 = 0xA042  # Reflection of the object/material (percent)
 MAT_TRANSPARENCY = 0xA050  # Transparency value of material (percent)
 MAT_SELF_ILLUM = 0xA080  # Self Illumination value of material
+MATSELFILPCT = 0xA084  # Self illumination strength (percent)
 MAT_WIRE = 0xA085  # Only render's wireframe
 
 MAT_TEXTURE_MAP = 0xA200  # This is a header for a new texture map
@@ -467,6 +468,7 @@ def process_next_chunk(context, file, previous_chunk, imported_objects, IMAGE_SE
         pct = 50
 
         contextWrapper.emission_color = contextMaterial.line_color[:3]
+        contextWrapper.emission_strength = contextMaterial.line_priority / 100
         contextWrapper.base_color = contextMaterial.diffuse_color[:3]
         contextWrapper.specular = contextMaterial.specular_intensity
         contextWrapper.roughness = contextMaterial.roughness
@@ -669,6 +671,18 @@ def process_next_chunk(context, file, previous_chunk, imported_objects, IMAGE_SE
                 print("Cannot read material transparency")
             new_chunk.bytes_read += temp_chunk.bytes_read
 
+        elif new_chunk.ID == MATSELFILPCT:
+            read_chunk(file, temp_chunk)
+            if temp_chunk.ID == PERCENTAGE_SHORT:
+                temp_data = file.read(SZ_U_SHORT)
+                temp_chunk.bytes_read += SZ_U_SHORT
+                contextMaterial.line_priority = int(struct.unpack('H', temp_data)[0])
+            elif temp_chunk.ID == PERCENTAGE_FLOAT:
+                temp_data = file.read(SZ_FLOAT)
+                temp_chunk.bytes_read += SZ_FLOAT
+                contextMaterial.line_priority = (float(struct.unpack('f', temp_data)[0]) * 100)
+            new_chunk.bytes_read += temp_chunk.bytes_read
+
         elif new_chunk.ID == MAT_TEXTURE_MAP:
             read_texture(new_chunk, temp_chunk, "Diffuse", "COLOR")
 
@@ -686,11 +700,18 @@ def process_next_chunk(context, file, previous_chunk, imported_objects, IMAGE_SE
             read_texture(new_chunk, temp_chunk, "Bump", "NORMAL")
 
         elif new_chunk.ID == MAT_BUMP_PERCENT:
-            temp_data = file.read(SZ_U_SHORT)
-            new_chunk.bytes_read += SZ_U_SHORT
-            contextWrapper.normalmap_strength = (float(struct.unpack('<H', temp_data)[0]) / 100)
+            read_chunk(file, temp_chunk)
+            if temp_chunk.ID == PERCENTAGE_SHORT:
+                temp_data = file.read(SZ_U_SHORT)
+                temp_chunk.bytes_read += SZ_U_SHORT
+                contextWrapper.normalmap_strength = (float(struct.unpack('<H', temp_data)[0]) / 100)
+            elif temp_chunk.ID == PERCENTAGE_FLOAT:
+                temp_data = file.read(SZ_FLOAT)
+                temp_chunk.bytes_read += SZ_FLOAT
+                contextWrapper.normalmap_strength = float(struct.unpack('f', temp_data)[0])
             new_chunk.bytes_read += temp_chunk.bytes_read
 
+
         elif new_chunk.ID == MAT_SHIN_MAP:
             read_texture(new_chunk, temp_chunk, "Shininess", "ROUGHNESS")