Version 0.1.4 (#16)

* Added Enable/Disable All and the option to select a root directory for relative paths

* Added first version of bin file format

* Added bin.py

* Fixed byte errors and store the rest of the bytes in an (unused) list

* Added 1 main commit

* Added main commit

* Added a button to select multiple sequences

* Added the functionality to import multiple sequences (in top menu and in addon), a custom initial transformation matrix and a list, so the file sequences do not have to be loaded again in every frame

* Added object property for initial transformation matrix, made for multiple sequence loading cleaner code and tried to resolve the issue with transformation matrices

* Added install script

* Fixed keyframe animation system to work with other transformations

* Optimized adding meshio objects and added a button to refresh the sequences

* Fixed keyframe system for multiple files

* Deleted install file from repo, since this is a local file.

* Resolved further changes

* Updated version + test to import MeshIO Objects

* Updated version

* Deleted some comments and made the code easier to read

* Further code improvements

* Removed bin.py

* Deleted import of bin.py and corrected version

---------

Co-authored-by: Julius Stotz <[email protected]>
Co-authored-by: julius.stotz <[email protected]>

Author: justo46

__init__.py

@@ -2,8 +2,8 @@
     "name": "Sequence Loader",
     "description": "Loader for meshio supported mesh files/ simulation sequences",
     "author": "Interactive Computer Graphics",
-    "version": (0, 1, 3),
-    "blender": (3, 1, 0),
+    "version": (0, 1, 4),
+    "blender": (3, 4, 0),
     "warning": "",
     "support": "COMMUNITY",
     "category": "Import-Export",
@@ -21,6 +21,7 @@
     bpy.context.preferences.filepaths.use_relative_paths = False
 
 from bseq import *
+from bseq.operators import menu_func_import
 
 classes = [
     BSEQ_obj_property,
@@ -44,6 +45,9 @@
     BSEQ_OT_refresh_seq,
     BSEQ_OT_disable_all,
     BSEQ_OT_enable_all,
+    BSEQ_OT_refresh_sequences,
+    WM_OT_batchSequences,
+    WM_OT_MeshioObject
 ]
 
 
@@ -56,6 +60,7 @@ def register():
     bpy.types.Object.BSEQ = bpy.props.PointerProperty(type=BSEQ_obj_property)
     bpy.types.Mesh.BSEQ = bpy.props.PointerProperty(type=BSEQ_mesh_property)
 
+    bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
 
     # manually call this function once
     # so when addon being installed, it can run correctly
@@ -69,6 +74,7 @@ def unregister():
     del bpy.types.Scene.BSEQ
     del bpy.types.Object.BSEQ
     bpy.app.handlers.load_post.remove(BSEQ_initialize)
+    bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
     unsubscribe_to_selected()
 
 

bseq/__init__.py

@@ -1,5 +1,5 @@
 from bseq.utils import refresh_obj
-from .operators import BSEQ_OT_load, BSEQ_OT_edit, BSEQ_OT_resetpt, BSEQ_OT_resetmesh, BSEQ_OT_resetins, BSEQ_OT_set_as_split_norm, BSEQ_OT_remove_split_norm, BSEQ_OT_disable_selected, BSEQ_OT_enable_selected, BSEQ_OT_refresh_seq, BSEQ_OT_disable_all, BSEQ_OT_enable_all
+from .operators import BSEQ_OT_load, BSEQ_OT_edit, BSEQ_OT_resetpt, BSEQ_OT_resetmesh, BSEQ_OT_resetins, BSEQ_OT_set_as_split_norm, BSEQ_OT_remove_split_norm, BSEQ_OT_disable_selected, BSEQ_OT_enable_selected, BSEQ_OT_refresh_seq, BSEQ_OT_disable_all, BSEQ_OT_enable_all, BSEQ_OT_refresh_sequences, WM_OT_batchSequences, WM_OT_MeshioObject
 from .properties import BSEQ_scene_property, BSEQ_obj_property, BSEQ_mesh_property
 from .panels import BSEQ_UL_Obj_List, BSEQ_List_Panel, BSEQ_Settings, BSEQ_Import, BSEQ_Templates, BSEQ_UL_Att_List, draw_template
 from .messenger import subscribe_to_selected, unsubscribe_to_selected
@@ -45,4 +45,7 @@ def BSEQ_initialize(scene):
     "BSEQ_OT_refresh_seq",
     "BSEQ_OT_disable_all",
     "BSEQ_OT_enable_all",
+    "BSEQ_OT_refresh_sequences",
+    "WM_OT_batchSequences",
+    "WM_OT_MeshioObject"
 ]

bseq/importer.py

@@ -1,7 +1,9 @@
 import bpy
+import mathutils
 import meshio
 import traceback
 import fileseq
+import os
 from .utils import show_message_box
 import numpy as np
 from mathutils import Matrix
@@ -51,6 +53,37 @@ def extract_faces(cell: meshio.CellBlock):
     show_message_box(cell.type + " is unsupported mesh format yet")
     return np.array([])
 
+def has_keyframe(obj, attr):
+    animdata = obj.animation_data
+    if animdata is not None and animdata.action is not None:
+        for fcurve in animdata.action.fcurves:
+            if fcurve.data_path == attr:
+                return len(fcurve.keyframe_points) > 0
+    return False
+
+def apply_transformation(meshio_mesh, obj, depsgraph):
+    # evaluate the keyframe animation system
+    eval_location = obj.evaluated_get(depsgraph).location if has_keyframe(obj, "location") else None
+    eval_scale = obj.evaluated_get(depsgraph).scale if has_keyframe(obj, "scale") else None
+
+    if has_keyframe(obj, "rotation_quaternion"):
+        eval_rotation = obj.evaluated_get(depsgraph).rotation_quaternion
+    elif has_keyframe(obj, "rotation_axis_angle"):
+        eval_rotation = obj.evaluated_get(depsgraph).rotation_axis_angle
+    elif has_keyframe(obj, "rotation_euler"):
+        eval_rotation = obj.evaluated_get(depsgraph).rotation_euler
+    else:
+        eval_rotation = None
+
+    eval_transform_matrix = mathutils.Matrix.LocRotScale(eval_location, eval_rotation, eval_scale)
+
+    # evaluate the rigid body transformations (only relevant for .bin format)
+    rigid_body_transformation = mathutils.Matrix.Identity(4)
+    if meshio_mesh.field_data.get("transformation_matrix") is not None:
+        rigid_body_transformation = meshio_mesh.field_data["transformation_matrix"]
+
+    # multiply everything together (with custom transform matrix)
+    obj.matrix_world = rigid_body_transformation @ obj.BSEQ.initial_transform_matrix @ eval_transform_matrix
 
 def update_mesh(meshio_mesh, mesh):
     # extract information from the meshio mesh
@@ -59,7 +92,8 @@ def update_mesh(meshio_mesh, mesh):
     n_poly = 0
     n_loop = 0
     n_verts = len(mesh_vertices)
-
+    if n_verts == 0:
+        return
     faces_loop_start = np.array([], dtype=np.uint64)
     faces_loop_total = np.array([], dtype=np.uint64)
     loops_vert_idx = np.array([], dtype=np.uint64)
@@ -136,8 +170,27 @@ def update_mesh(meshio_mesh, mesh):
             mesh.use_auto_smooth = True
             mesh.normals_split_custom_set_from_vertices(v)
 
+# function to create a single meshio object
+def create_meshio_obj(filepath):
+    meshio_mesh = None
+    try:
+        meshio_mesh = meshio.read(filepath)
+    except Exception as e:
+        show_message_box("Error when reading: " + filepath + ",\n" + traceback.format_exc(),
+                         "Meshio Loading Error" + str(e),
+                         icon="ERROR")
+        
+    #  create the object
+    name = os.path.basename(filepath) 
+    mesh = bpy.data.meshes.new(name)
+    object = bpy.data.objects.new(name, mesh)
+    update_mesh(meshio_mesh, object.data)
+    bpy.context.collection.objects.link(object)
+    bpy.ops.object.select_all(action="DESELECT")
+    bpy.context.view_layer.objects.active = object
 
-def create_obj(fileseq, use_relative, root_path, transform_matrix=Matrix([[1, 0, 0, 0], [0, 0, -1, 0], [0, 1, 0, 0], [0, 0, 0, 1]])):
+
+def create_obj(fileseq, use_relative, root_path, transform_matrix=Matrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]])):
 
     current_frame = bpy.context.scene.frame_current
     filepath = fileseq[current_frame % len(fileseq)]
@@ -166,7 +219,8 @@ def create_obj(fileseq, use_relative, root_path, transform_matrix=Matrix([[1, 0,
         object.BSEQ.pattern = str(fileseq)
     object.BSEQ.init = True
     object.BSEQ.enabled = enabled
-    object.matrix_world = transform_matrix
+    # Flatten custom transformation matrix for the property
+    object.BSEQ.initial_transform_matrix = [transform_matrix[j][i] for i in range(4) for j in range(4)]
     driver = object.driver_add("BSEQ.frame")
     driver.driver.expression = 'frame'
     if enabled:
@@ -247,14 +301,5 @@ def update_obj(scene, depsgraph=None):
             continue
         update_mesh(meshio_mesh, obj.data)
 
-        # force to evaluate the keyframe animation system
-        obj.location = obj.evaluated_get(depsgraph).location
-        match obj.rotation_mode:
-            case "QUATERNION":
-                obj.rotation_quaternion = obj.evaluated_get(depsgraph).rotation_quaternion
-            case "AXIS_ANGLE":
-                obj.rotation_axis_angle = obj.evaluated_get(depsgraph).rotation_axis_angle
-            case _:
-                obj.rotation_euler = obj.evaluated_get(depsgraph).rotation_euler
-        
-        obj.scale = obj.evaluated_get(depsgraph).scale
+        apply_transformation(meshio_mesh, obj, depsgraph)
+        

bseq/operators.py

@@ -1,9 +1,10 @@
 import bpy
+from mathutils import Matrix
 import fileseq
 from .messenger import *
 import traceback
 from .utils import refresh_obj, show_message_box
-from .importer import create_obj
+from .importer import create_obj, create_meshio_obj
 import numpy as np
 
 
@@ -41,7 +42,13 @@ def execute(self, context):
             show_message_box(traceback.format_exc(), "Can't find sequence: " + str(fs), "ERROR")
             return {"CANCELLED"}
 
-        create_obj(fs, importer_prop.relative, importer_prop.root_path)
+        transform_matrix = (Matrix.LocRotScale(
+                                    importer_prop.custom_location, 
+                                    importer_prop.custom_rotation, 
+                                    importer_prop.custom_scale)
+                                    if importer_prop.use_custom_transform else Matrix.Identity(4))
+
+        create_obj(fs, importer_prop.relative, importer_prop.root_path, transform_matrix=transform_matrix)
         return {"FINISHED"}
 
 
@@ -297,3 +304,68 @@ def execute(self, context):
             if obj.BSEQ.init and not obj.BSEQ.enabled:
                 obj.BSEQ.enabled = True
         return {"FINISHED"}
+
+class BSEQ_OT_refresh_sequences(bpy.types.Operator):
+    '''This operator refreshes all found sequences'''
+    bl_label = "" #"Refresh Found Sequences"
+    bl_idname = "bseq.refreshseqs"
+    bl_options = {"UNDO"}
+
+    def execute(self, context):
+        scene = context.scene
+        # call the update function of path by setting it to its own value
+        scene.BSEQ.path = scene.BSEQ.path
+        return {"FINISHED"}
+
+from pathlib import Path
+import meshio
+from bpy_extras.io_utils import ImportHelper
+
+class WM_OT_batchSequences(bpy.types.Operator, ImportHelper):
+    """Batch Import Sequences"""
+    bl_idname = "wm.seq_import_batch"
+    bl_label = "Import multiple sequences"
+    bl_options = {'PRESET', 'UNDO'}
+
+    files: bpy.props.CollectionProperty(type=bpy.types.PropertyGroup)
+
+    def execute(self, context):
+        scene = context.scene
+        importer_prop = scene.BSEQ
+
+        folder = Path(self.filepath)
+        used_seqs = set()
+
+        for selection in self.files:
+            # Check if there exists a matching file sequence for every selection
+            fp = str(Path(folder.parent, selection.name))
+            seqs = fileseq.findSequencesOnDisk(str(folder.parent))
+            matching_seqs = [s for s in seqs if fp in list(s) and s not in used_seqs]
+            
+            if matching_seqs:
+                transform_matrix = (Matrix.LocRotScale(importer_prop.custom_location, importer_prop.custom_rotation, importer_prop.custom_scale)
+                                    if importer_prop.use_custom_transform else Matrix.Identity(4))
+                create_obj(matching_seqs[0], False, importer_prop.root_path, transform_matrix=transform_matrix)
+                used_seqs.add(matching_seqs[0])
+        return {'FINISHED'}
+
+class WM_OT_MeshioObject(bpy.types.Operator, ImportHelper):
+    """Batch Import Meshio Objects"""
+    bl_idname = "wm.meshio_import_batch"
+    bl_label = "Import multiple Meshio objects"
+    bl_options = {'PRESET', 'UNDO'}
+
+    files: bpy.props.CollectionProperty(type=bpy.types.PropertyGroup)
+            
+    def execute(self, context):
+        folder = Path(self.filepath)
+
+        for selection in self.files:
+            fp = Path(folder.parent, selection.name)
+            create_meshio_obj(str(fp))
+        return {'FINISHED'}
+
+def menu_func_import(self, context):
+    self.layout.operator(
+            WM_OT_MeshioObject.bl_idname, 
+            text="MeshIO Object")

bseq/panels.py

@@ -191,16 +191,23 @@ def draw(self, context):
         if importer_prop.use_pattern:
             col2.prop(importer_prop, "pattern", text="")
         else:
-            col2.prop(importer_prop, "fileseq", text="")
+            split2 = col2.split(factor=0.75)
+            col3 = split2.column()
+            col4 = split2.column()
+            col3.prop(importer_prop, "fileseq", text="")
+            col4.operator("bseq.refreshseqs", icon="FILE_REFRESH")
 
         col1.label(text="Use Relative Path")
         col2.prop(importer_prop, "relative", text="")
 
-        if importer_prop.relative is True:
+        if importer_prop.relative:
             col1.label(text="Root Directory")
             col2.prop(importer_prop, "root_path", text="")
 
         layout.operator("sequence.load")
+
+        layout.operator("wm.seq_import_batch")
+        
         split = layout.split()
         col1 = split.column()
         col2 = split.column()
@@ -227,7 +234,19 @@ def draw(self, context):
         col2.prop(importer_prop, "print", text="")
         col1.label(text="Auto refresh all the sequence every frame")
         col2.prop(importer_prop, "auto_refresh", text="")
+        col1.label(text="Use custom transformation matrix")
+        col2.prop(importer_prop, "use_custom_transform", text="")
+
+        if importer_prop.use_custom_transform:
+            box.label(text="Location:")
+            box.prop(importer_prop, "custom_location", text="")
+
+            box.label(text="Rotation:")
+            box.prop(importer_prop, "custom_rotation", text="")
 
+            box.label(text="Scale:")
+            box.prop(importer_prop, "custom_scale", text="")
+        
 
 class BSEQ_Templates(bpy.types.Menu):
     '''

bseq/properties.py

@@ -1,6 +1,6 @@
 import bpy
 from .callback import *
-
+from mathutils import Matrix
 
 class BSEQ_scene_property(bpy.types.PropertyGroup):
     path: bpy.props.StringProperty(name="Directory",
@@ -22,6 +22,10 @@ class BSEQ_scene_property(bpy.types.PropertyGroup):
                                         default=False)
     pattern: bpy.props.StringProperty(name="Pattern",
                                       description="You can specify the pattern here, in case the sequence can't be deteced.")
+    
+    file_paths: bpy.props.StringProperty(name="File",
+                                        subtype="FILE_PATH",
+                                        description="Select a root folder for all relative paths. When not set the current filename is used.")
 
     selected_obj_deselectall_flag: bpy.props.BoolProperty(default=True,
                                                           description="the flag to determine whether call deselect all or not ")
@@ -48,7 +52,27 @@ class BSEQ_scene_property(bpy.types.PropertyGroup):
     auto_refresh: bpy.props.BoolProperty(name='auto refresh',
                                          description="whether or not to auto refresh all the sequence every frame",
                                          default=False)
+    
+    use_custom_transform: bpy.props.BoolProperty(name='Use custom transformation matrix', 
+                                                 description="Whether or not to use a custom transformation matrix", 
+                                                 default=False)
 
+    custom_location: bpy.props.FloatVectorProperty(name='Custom Location', 
+                                                   description='Set custom location vector', 
+                                                   size=3, 
+                                                   subtype="TRANSLATION")
+    
+    custom_rotation: bpy.props.FloatVectorProperty(name='Custom Rotation', 
+                                                   description='Set custom rotation vector', 
+                                                   size=3, 
+                                                   subtype="EULER", 
+                                                   default=[0,0,0])
+    
+    custom_scale: bpy.props.FloatVectorProperty(name='Custom Scale', 
+                                                description='Set custom scaling vector', 
+                                                size=3, 
+                                                subtype="COORDINATES", 
+                                                default=[1,1,1])
 
 class BSEQ_obj_property(bpy.types.PropertyGroup):
     init: bpy.props.BoolProperty(default=False)
@@ -59,7 +83,10 @@ class BSEQ_obj_property(bpy.types.PropertyGroup):
     use_relative: bpy.props.BoolProperty(default=False)
     pattern: bpy.props.StringProperty()
     frame: bpy.props.IntProperty()
-
+    initial_transform_matrix: bpy.props.FloatVectorProperty(name='Custom Transformation Matrix',
+                                                            description='Set custom transformation',
+                                                            size=16,
+                                                            subtype="MATRIX")
 
 # set this property for mesh, not object (maybe change later?)
 class BSEQ_mesh_property(bpy.types.PropertyGroup):