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#
#  This program is free software; you can redistribute it and/or
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#  GNU General Public License for more details.
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#  along with this program; if not, write to the Free Software Foundation,
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# ##### END GPL LICENSE BLOCK #####

# <pep8 compliant>

bl_info = {
    "name": "Hotkey: 'Alt Shift O'",
    "description": "Origin Snap/Place Menu",
    "author": "pitiwazou, meta-androcto",
    "version": (0, 1, 1),
    "blender": (2, 80, 0),
    "location": "3D View",
    "warning": "",
    "wiki_url": "",
    "category": "Origin Pie"
    }

import bpy
from bpy.types import (
        Menu,
        Operator,
        )


# Pivot to selection
class PIE_OT_PivotToSelection(Operator):
    bl_idname = "object.pivot2selection"
    bl_label = "Pivot To Selection"
    bl_description = "Pivot Point To Selection"
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        saved_location = context.scene.cursor.location.copy()
        bpy.ops.view3d.snap_cursor_to_selected()
        bpy.ops.object.mode_set(mode='OBJECT')
        bpy.ops.object.origin_set(type='ORIGIN_CURSOR')
        context.scene.cursor.location = saved_location

        return {'FINISHED'}


# Pivot to Bottom
class PIE_OT_PivotBottom(Operator):
    bl_idname = "object.pivotobottom"
    bl_label = "Pivot To Bottom"
    bl_description = ("Set the Pivot Point To Lowest Point\n"
                      "Needs an Active Object of the Mesh type")
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context):
        obj = context.active_object
        return obj is not None and obj.type == "MESH"

    def execute(self, context):
        bpy.ops.object.mode_set(mode='OBJECT')
        bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
        bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY')
        o = context.active_object
        init = 0
        for x in o.data.vertices:
            if init == 0:
                a = x.co.z
                init = 1
            elif x.co.z < a:
                a = x.co.z

        for x in o.data.vertices:
            x.co.z -= a

        o.location.z += a
        bpy.ops.object.mode_set(mode='EDIT')

        return {'FINISHED'}


# Pie Origin/Pivot - Shift + S
class PIE_MT_OriginPivot(Menu):
    bl_idname = "ORIGIN_MT_pivotmenu"
    bl_label = "Origin Menu"

    def draw(self, context):
        layout = self.layout
        obj = context.object
        pie = layout.menu_pie()
        if obj and obj.type == 'MESH':
            # 4 - LEFT
            pie.operator("object.origin_set", text="Origin to Center of Mass",
                         icon='NONE').type = 'ORIGIN_CENTER_OF_MASS'
            # 6 - RIGHT
            pie.operator("object.origin_set", text="Origin To 3D Cursor",
                        icon='PIVOT_CURSOR').type = 'ORIGIN_CURSOR'
            # 2 - BOTTOM
            pie.operator("object.pivotobottom", text="Origin to Bottom",
                        icon='TRIA_DOWN')
            # 8 - TOP
            pie.operator("object.pivot2selection", text="Origin To Selection",
                        icon='SNAP_INCREMENT')
            # 7 - TOP - LEFT
            pie.operator("object.origin_set", text="Geometry To Origin",
                        icon='NONE').type = 'GEOMETRY_ORIGIN'
            # 9 - TOP - RIGHT
            pie.operator("object.origin_set", text="Origin To Geometry",
                        icon='NONE').type = 'ORIGIN_GEOMETRY'

        else:
            # 4 - LEFT
            pie.operator("object.origin_set", text="Origin to Center of Mass",
                         icon='NONE').type = 'ORIGIN_CENTER_OF_MASS'
            # 6 - RIGHT
            pie.operator("object.origin_set", text="Origin To 3D Cursor",
                        icon='PIVOT_CURSOR').type = 'ORIGIN_CURSOR'
            # 2 - BOTTOM
            pie.operator("object.pivot2selection", text="Origin To Selection",
                        icon='SNAP_INCREMENT')
            # 8 - TOP
            pie.operator("object.origin_set", text="Origin To Geometry",
                        icon='NONE').type = 'ORIGIN_GEOMETRY'
            # 7 - TOP - LEFT
            pie.operator("object.origin_set", text="Geometry To Origin",
                        icon='NONE').type = 'GEOMETRY_ORIGIN'


classes = (
    PIE_MT_OriginPivot,
    PIE_OT_PivotToSelection,
    PIE_OT_PivotBottom,
    )

addon_keymaps = []


def register():
    for cls in classes:
        bpy.utils.register_class(cls)

    wm = bpy.context.window_manager
    if wm.keyconfigs.addon:
        # Origin/Pivot
        km = wm.keyconfigs.addon.keymaps.new(name='3D View Generic', space_type='VIEW_3D')
        kmi = km.keymap_items.new('wm.call_menu_pie', 'O', 'PRESS', shift=True, alt=True)
        kmi.properties.name = "ORIGIN_MT_pivotmenu"
        addon_keymaps.append((km, kmi))


def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)

    wm = bpy.context.window_manager
    kc = wm.keyconfigs.addon
    if kc:
        for km, kmi in addon_keymaps:
            km.keymap_items.remove(kmi)
    addon_keymaps.clear()


if __name__ == "__main__":
    register()
