1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
import bpy
from mathutils import Vector
from bpy.props import FloatVectorProperty
class ViewOperator(bpy.types.Operator):
"""Translate the view using mouse events"""
bl_idname = "view3d.modal_operator"
bl_label = "Simple View Operator"
offset: FloatVectorProperty(
name="Offset",
size=3,
)
def execute(self, context):
v3d = context.space_data
rv3d = v3d.region_3d
rv3d.view_location = self._initial_location + Vector(self.offset)
def modal(self, context, event):
v3d = context.space_data
rv3d = v3d.region_3d
if event.type == 'MOUSEMOVE':
self.offset = (self._initial_mouse - Vector((event.mouse_x, event.mouse_y, 0.0))) * 0.02
self.execute(context)
context.area.header_text_set("Offset %.4f %.4f %.4f" % tuple(self.offset))
elif event.type == 'LEFTMOUSE':
context.area.header_text_set(None)
return {'FINISHED'}
elif event.type in {'RIGHTMOUSE', 'ESC'}:
rv3d.view_location = self._initial_location
context.area.header_text_set(None)
return {'CANCELLED'}
return {'RUNNING_MODAL'}
def invoke(self, context, event):
if context.space_data.type == 'VIEW_3D':
v3d = context.space_data
rv3d = v3d.region_3d
if rv3d.view_perspective == 'CAMERA':
rv3d.view_perspective = 'PERSP'
self._initial_mouse = Vector((event.mouse_x, event.mouse_y, 0.0))
self._initial_location = rv3d.view_location.copy()
context.window_manager.modal_handler_add(self)
return {'RUNNING_MODAL'}
else:
self.report({'WARNING'}, "Active space must be a View3d")
return {'CANCELLED'}
def menu_func(self, context):
self.layout.operator(ViewOperator.bl_idname, text = "Simple View Modal Operator")
# Register and add to the "view" menu (required to also use F3 search "Simple View Modal Operator" for quick access)
def register():
bpy.utils.register_class(ViewOperator)
bpy.types.VIEW3D_MT_view.append(menu_func)
def unregister():
bpy.utils.unregister_class(ViewOperator)
bpy.types.VIEW3D_MT_view.remove(menu_func)
if __name__ == "__main__":
register()
|
