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# Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
# Required Blender information.
bl_info = {
"name": "Qt3D Armature Exporter",
"author": "Sean Harmer <sean.harmer@kdab.com>, Robert Brock <robert.brock@kdab.com>",
"version": (0, 2),
"blender": (2, 80, 0),
"location": "File > Export > Qt3D Armature Exporter (.json)",
"description": "Export Armature to json to use with Qt3D",
"warning": "",
"wiki_url": "",
"tracker_url": "",
"category": "Import-Export"
}
import bpy
import os
import struct
import mathutils
import math
import json
from array import array
from bpy import context
from bpy_extras.io_utils import ExportHelper
from bpy.props import (
BoolProperty,
FloatProperty,
StringProperty,
EnumProperty,
)
from collections import defaultdict
def jsonBuilder():
bonesList = []
name = ""
boneParent = ""
ob = bpy.context.object.data
if not hasattr(ob, 'bones'):
return bonesList
for bone in ob.bones:
#check parent exists
if bone.parent:
boneParent = bone.parent.name
else:
boneParent = ""
#add the bones
bonesList.append({"bone": bone.name,
"parent": boneParent,
"matrix": jsonMatrix(bone)
})
return bonesList
def jsonMatrix(bone):
matrix = []
for i in range(0, 4):
matrix.append(str("%.4f, %.4f, %.4f, %.4f" % (bone.matrix_local[i][0],
bone.matrix_local[i][1],
bone.matrix_local[i][2],
bone.matrix_local[i][3])))
return matrix
class Qt3DMeshDataConverter:
def boneInfoToJson(self):
# Pass 1 - collect data we need to produce the output in pass 2
print(">>> About to enter Objects")
jsonData = json.dumps({ "bones": jsonBuilder()}, indent=2, sort_keys=True, separators=(',', ': '))
return jsonData
class Qt3DArmatureExporter(bpy.types.Operator, ExportHelper):
"""Qt3D Exporter"""
bl_idname = "export_scene.qt3d_armature_exporter";
bl_label = "Qt3DArmatureExporter";
bl_options = {'PRESET'};
filename_ext = ""
use_filter_folder = True
def __init__(self):
pass
def execute(self, context):
print("In Execute" + bpy.context.scene.name)
self.userpath = self.properties.filepath
# unselect all
bpy.ops.object.select_all(action='DESELECT')
converter = Qt3DMeshDataConverter()
fileContent = converter.boneInfoToJson()
with open(self.userpath + ".json", '+w') as f:
f.write(fileContent)
return {'FINISHED'}
def createBlenderMenu(self, context):
self.layout.operator(Qt3DArmatureExporter.bl_idname, text="Qt3D Armature Export(.json)")
# Register against Blender
def register():
bpy.utils.register_class(Qt3DArmatureExporter)
if bpy.app.version < (2, 80, 0):
bpy.types.INFO_MT_file_export.append(createBlenderMenu)
else:
bpy.types.TOPBAR_MT_file_export.append(createBlenderMenu)
def unregister():
bpy.utils.unregister_class(Qt3DArmatureExporter)
if bpy.app.version < (2, 80, 0):
bpy.types.INFO_MT_file_export.remove(createBlenderMenu)
else:
bpy.types.TOPBAR_MT_file_export.remove(createBlenderMenu)
# Handle running the script from Blender's text editor.
if (__name__ == "__main__"):
register();
bpy.ops.export_scene.qt3d_Armature_exporter();
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