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space_view3d_viewport_roll.py
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space_view3d_viewport_roll.py
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import bpy
from mathutils import *
from math import *
bl_info = {
"name": "Viewport Roll",
"author": "Jace Priester",
"version": (1, 0, 1),
"blender": (2, 6, 3),
"api": 45996,
"location": "View 3D -> Ctrl-Shift-Mousewheel and Alt-Middle-Drag",
"description": "Adds roll capability to the 3d viewport",
"warning": "",
"wiki_url": "http://wiki.blender.org/index.php/Extensions:2.5/Py/"\
"Scripts/My_Script",
"tracker_url": "http://projects.blender.org/tracker/index.php?"\
"func=detail&aid=<number>",
"category": "3D View"}
class RollViewportCW(bpy.types.Operator):
'''Roll the viewport clockwise.'''
bl_idname = "view3d.roll_viewport_cw"
bl_label = "Roll the viewport clockwise"
bl_options = {'GRAB_POINTER'}
def execute(self, context):
v3d = context.space_data
rv3d = v3d.region_3d
if rv3d.view_perspective == 'CAMERA':
rv3d.view_perspective = 'PERSP'
camNormal=Vector((0,0,-1))
angle_diff=bpy.context.user_preferences.view.rotation_angle*pi/180.0
q=Quaternion(camNormal,-angle_diff)
rv3d.view_rotation*=q
return {'FINISHED'}
class RollViewportCCW(bpy.types.Operator):
'''Roll the viewport counterclockwise.'''
bl_idname = "view3d.roll_viewport_ccw"
bl_label = "Roll the viewport counterclockwise"
bl_options = {'GRAB_POINTER'}
def execute(self, context):
v3d = context.space_data
rv3d = v3d.region_3d
if rv3d.view_perspective == 'CAMERA':
rv3d.view_perspective = 'PERSP'
camNormal=Vector((0,0,-1))
angle_diff=bpy.context.user_preferences.view.rotation_angle*pi/180.0
q=Quaternion(camNormal,angle_diff)
rv3d.view_rotation*=q
return {'FINISHED'}
class RollViewport(bpy.types.Operator):
'''Roll the viewport.'''
bl_idname = "view3d.roll_viewport"
bl_label = "Roll the viewport"
bl_options = {'GRAB_POINTER'}
initial_angle=0
angle_now=0
initial_rotation=Vector((0,0,0))
def execute(self, context):
v3d = context.space_data
rv3d = v3d.region_3d
camNormal=Vector((0,0,-1))
angle_diff=self.angle_now-self.initial_angle
q=Quaternion(camNormal,angle_diff)
rv3d.view_rotation=self.initial_rotation*q
return {'FINISHED'}
def modal(self, context, event):
v3d = context.space_data
rv3d = v3d.region_3d
if event.type == 'MOUSEMOVE':
mouseloc=Vector((event.mouse_region_x,event.mouse_region_y))
mouseloc_centered=mouseloc-self.center
self.angle_now=atan2(mouseloc_centered.y,mouseloc_centered.x)
self.execute(context)
#context.area.header_text_set("Offset %.4f %.4f %.4f" % tuple(self.offset))
elif event.type in {'LEFTMOUSE', 'MIDDLEMOUSE'}:
context.area.header_text_set()
return {'FINISHED'}
elif event.type in {'RIGHTMOUSE', 'ESC'}:
rv3d.view_rotation = self.initial_rotation
context.area.header_text_set()
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
context.window_manager.modal_handler_add(self)
if rv3d.view_perspective == 'CAMERA':
rv3d.view_perspective = 'PERSP'
self.windowsize=Vector((context.region.width,context.region.height))
self.center=self.windowsize/2
mouseloc=Vector((event.mouse_region_x,event.mouse_region_y))
mouseloc_centered=mouseloc-self.center
self.initial_rotation=rv3d.view_rotation.copy()
self.initial_angle=atan2(mouseloc_centered.y,mouseloc_centered.x)
self.angle_now=self.initial_angle
return {'RUNNING_MODAL'}
else:
self.report({'WARNING'}, "Active space must be a View3d")
return {'CANCELLED'}
def register():
bpy.utils.register_class(RollViewport)
bpy.utils.register_class(RollViewportCW)
bpy.utils.register_class(RollViewportCCW)
wm = bpy.context.window_manager
km = wm.keyconfigs.addon.keymaps.new(name="3D View", space_type='VIEW_3D')
kmi = km.keymap_items.new('view3d.roll_viewport', 'MIDDLEMOUSE', 'PRESS', shift=False, ctrl=False, alt=True)
kmi = km.keymap_items.new('view3d.roll_viewport_ccw', 'WHEELUPMOUSE', 'PRESS', shift=True, ctrl=True, alt=False)
kmi = km.keymap_items.new('view3d.roll_viewport_cw', 'WHEELDOWNMOUSE', 'PRESS', shift=True, ctrl=True, alt=False)
def unregister():
bpy.utils.unregister_class(RollViewport)
bpy.utils.unregister_class(RollViewportCW)
bpy.utils.unregister_class(RollViewportCCW)
wm = bpy.context.window_manager
km = wm.keyconfigs.addon.keymaps['3D View']
for kmi in km.keymap_items:
if kmi.idname == 'view3d.roll_viewport':
km.keymap_items.remove(kmi)
elif kmi.idname == 'view3d.roll_viewport_ccw':
km.keymap_items.remove(kmi)
elif kmi.idname == 'view3d.roll_viewport_cw':
km.keymap_items.remove(kmi)
if __name__ == "__main__":
register()

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