version 1.0

README.md

@@ -1,2 +1,4 @@
-# OriginToFloor
+# Origin to Floor
 Blender addon that sets the origin of the object to its floor position
+
+![demo](./demo.png)

__init__.py

@@ -0,0 +1,105 @@
+bl_info = {
+    "name": "Origin to Floor",
+    'author': 'AssisrMatheus',
+    'version': (1, 0, 0),
+    'blender': (2, 80, 0),
+    'location': 'Object > Origin to Floor',
+    'description': 'Centers the origin on the floor of the selected object',
+    "category": "Object",
+    "tracker_url": "https://github.com/AssisrMatheus/OriginToFloor/issues",
+    "wiki_url": "https://github.com/AssisrMatheus/OriginToFloor",
+}
+
+import bpy
+
+def set_origin_to_floor(shouldClear):
+    # Get the selected object
+    obj = bpy.context.active_object
+
+    # Stores the current edit mode so we can rollback later
+    current_mode = obj.mode
+
+    # The method used to get the vertices depends on being on object mode
+    bpy.ops.object.mode_set(mode = 'OBJECT')
+
+    # Stores the current pivot point transform setting
+    current_pivot = bpy.context.scene.tool_settings.transform_pivot_point
+
+    # Sets the pivot point transform setting so the origin calculation is exactly at the center
+    bpy.context.scene.tool_settings.transform_pivot_point = "BOUNDING_BOX_CENTER"
+
+    # Puts the origin in the center of the object
+    bpy.ops.object.origin_set(type = 'ORIGIN_GEOMETRY')
+
+    # Resets back to the previous pivot point transform setting
+    bpy.context.scene.tool_settings.transform_pivot_point = current_pivot
+
+    # Grabs all the vertices, then their coordinates, then their Z position
+    z_verts = [v.co.z for v in obj.data.vertices]
+
+    # Grabs the most negative Z position(floor position)
+    deepest_vert_z = min(z_verts)
+
+    # We're going to translate only the origin for now
+    bpy.context.scene.tool_settings.use_transform_data_origin = True
+
+    # Translate the origin only on Z, to the same position as vertex that is closest to the bottom
+    bpy.ops.transform.translate(value=(0, 0, deepest_vert_z))
+
+    # Reset the origin manipulation back
+    bpy.context.scene.tool_settings.use_transform_data_origin = False
+
+    if shouldClear:
+        bpy.ops.object.location_clear(clear_delta=False)
+
+    # Resets the object mode back to what it was previously
+    bpy.ops.object.mode_set(mode = current_mode)
+
+class OriginToFloor(bpy.types.Operator):
+    """Tooltip"""
+    bl_idname = "object.origin_to_floor"
+    bl_label = "Origin to Floor"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    @classmethod
+    def poll(cls, context):
+        obj = context.active_object
+        # Only if there's a selected object
+        return obj is not None
+
+    def execute(self, context):
+        set_origin_to_floor(False)
+        return {'FINISHED'}
+
+class OriginToFloorClear(bpy.types.Operator):
+    """Tooltip"""
+    bl_idname = "object.origin_to_floor_clear"
+    bl_label = "Origin to Floor(Clear position)"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    @classmethod
+    def poll(cls, context):
+        obj = context.active_object
+        # Only if there's a selected object
+        return obj is not None
+
+    def execute(self, context):
+        set_origin_to_floor(True)
+        return {'FINISHED'}
+
+def menu_func(self, context):
+    layout = self.layout
+    layout.operator(OriginToFloor.bl_idname)
+    layout.operator(OriginToFloorClear.bl_idname)
+
+def register():
+    bpy.utils.register_class(OriginToFloor)
+    bpy.utils.register_class(OriginToFloorClear)
+    bpy.types.VIEW3D_MT_object.append(menu_func)
+
+def unregister():
+    bpy.utils.unregister_class(OriginToFloor)
+    bpy.utils.unregister_class(OriginToFloorClear)
+
+if __name__ == "__main__":
+    register()