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# ***** BEGIN GPL LICENSE BLOCK *****
#
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****
bl_info = {
"name": "Turnaround Camera",
"author": "Antonio Vazquez (antonioya)",
"version": (0, 2, 4),
"blender": (2, 68, 0),
"location": "View3D > Toolshelf > Animation > Turnaround camera",
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"description": "Add a camera rotation around selected object.",
"wiki_url": "https://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/TurnaroundCamera",
"category": "Camera"}
import bpy
import math
# ------------------------------------------------------
# Action class
# ------------------------------------------------------
class RunAction(bpy.types.Operator):
bl_idname = "object.rotate_around"
bl_label = "Turnaround"
bl_description = "Create camera rotation around selected object"
# ------------------------------
# Execute
# ------------------------------
def execute(self, context):
# ----------------------
# Save old data
# ----------------------
scene = context.scene
selectobject = context.active_object
camera = bpy.data.objects[bpy.context.scene.camera.name]
savedcursor = bpy.context.scene.cursor_location.copy() # cursor position
savedframe = scene.frame_current
if scene.use_cursor is False:
bpy.ops.view3d.snap_cursor_to_selected()
# -------------------------
# Create empty and parent
# -------------------------
bpy.ops.object.empty_add(type='PLAIN_AXES')
myempty = bpy.data.objects[bpy.context.active_object.name]
myempty.location = selectobject.location
savedstate = myempty.matrix_world
myempty.parent = selectobject
myempty.name = 'MCH_Rotation_target'
myempty.matrix_world = savedstate
# -------------------------
# Parent camera to empty
# -------------------------
savedstate = camera.matrix_world
camera.parent = myempty
camera.matrix_world = savedstate
# -------------------------
# Now add revolutions
# (make empty active object)
# -------------------------
bpy.ops.object.select_all(False)
myempty.select = True
bpy.context.scene.objects.active = myempty
# save current configuration
savedinterpolation = context.user_preferences.edit.keyframe_new_interpolation_type
# change interpolation mode
context.user_preferences.edit.keyframe_new_interpolation_type = 'LINEAR'
# create first frame
myempty.rotation_euler = (0, 0, 0)
myempty.empty_draw_size = 0.1
bpy.context.scene.frame_set(scene.frame_start)
myempty.keyframe_insert(data_path='rotation_euler', frame=scene.frame_start)
# Dolly zoom
if scene.dolly_zoom != "0":
bpy.data.cameras[camera.name].lens = scene.camera_from_lens
bpy.data.cameras[camera.name].keyframe_insert('lens', frame=scene.frame_start)
# Calculate rotation XYZ
if scene.inverse_x:
ix = -1
else:
ix = 1
if scene.inverse_y:
iy = -1
else:
iy = 1
if scene.inverse_z:
iz = -1
else:
iz = 1
xrot = (math.pi * 2) * scene.camera_revol_x * ix
yrot = (math.pi * 2) * scene.camera_revol_y * iy
zrot = (math.pi * 2) * scene.camera_revol_z * iz
# create middle frame
if scene.back_forw is True:
myempty.rotation_euler = (xrot, yrot, zrot)
myempty.keyframe_insert(data_path='rotation_euler', frame=((scene.frame_end - scene.frame_start) / 2))
# reverse
xrot *= -1
yrot *= -1
zrot = 0
# Dolly zoom
if scene.dolly_zoom == "2":
bpy.data.cameras[camera.name].lens = scene.camera_to_lens
bpy.data.cameras[camera.name].keyframe_insert('lens', frame=((scene.frame_end - scene.frame_start) / 2))
# create last frame
myempty.rotation_euler = (xrot, yrot, zrot)
myempty.keyframe_insert(data_path='rotation_euler', frame=scene.frame_end)
# Dolly zoom
if scene.dolly_zoom != "0":
if scene.dolly_zoom == "1":
bpy.data.cameras[camera.name].lens = scene.camera_to_lens # final
else:
bpy.data.cameras[camera.name].lens = scene.camera_from_lens # back to init
bpy.data.cameras[camera.name].keyframe_insert('lens', frame=scene.frame_end)
# Track constraint
if scene.track is True:
bpy.context.scene.objects.active = camera
bpy.ops.object.constraint_add(type='TRACK_TO')
bpy.context.object.constraints[-1].track_axis = 'TRACK_NEGATIVE_Z'
bpy.context.object.constraints[-1].up_axis = 'UP_Y'
bpy.context.object.constraints[-1].target = bpy.data.objects[myempty.name]
# back previous configuration
context.user_preferences.edit.keyframe_new_interpolation_type = savedinterpolation
bpy.context.scene.cursor_location = savedcursor
# -------------------------
# Back to old selection
# -------------------------
bpy.ops.object.select_all(False)
selectobject.select = True
bpy.context.scene.objects.active = selectobject
bpy.context.scene.frame_set(savedframe)
return {'FINISHED'}
# ------------------------------------------------------
# UI Class
# ------------------------------------------------------
class PanelUI(bpy.types.Panel):
bl_label = "Turnaround Camera"
bl_space_type = "VIEW_3D"
bl_region_type = "TOOLS"
bl_category = "Animation"
# ------------------------------
# Draw UI
# ------------------------------
def draw(self, context):
layout = self.layout
scene = context.scene
try:
bpy.context.scene.camera.name
except AttributeError:
row = layout.row(align=False)
row.label("No defined camera for scene", icon="ERROR")
return
if context.active_object is not None:
if context.active_object.type != 'CAMERA':
buf = context.active_object.name
row = layout.row(align=False)
row.operator("object.rotate_around", icon='OUTLINER_DATA_CAMERA')
row.label(buf, icon='MESH_DATA')
row = layout.row()
row.prop(scene, "use_cursor")
row = layout.row(align=False)
row.prop(scene, "camera")
row = layout.row()
row.prop(scene, "frame_start")
row.prop(scene, "frame_end")
row = layout.row()
row.prop(scene, "camera_revol_x")
row.prop(scene, "camera_revol_y")
row.prop(scene, "camera_revol_z")
row = layout.row()
row.prop(scene, "inverse_x")
row.prop(scene, "inverse_y")
row.prop(scene, "inverse_z")
row = layout.row()
row.prop(scene, "back_forw")
row = layout.row()
row.prop(scene, "dolly_zoom")
if scene.dolly_zoom != "0":
row = layout.row()
row.prop(scene, "camera_from_lens")
row.prop(scene, "camera_to_lens")
row = layout.row()
row.prop(scene, "track")
else:
buf = "No valid object selected"
layout.label(buf, icon='MESH_DATA')
# ------------------------------------------------------
# Registration
# ------------------------------------------------------
def register():
bpy.utils.register_class(RunAction)
bpy.utils.register_class(PanelUI)
# Define properties
bpy.types.Scene.camera_revol_x = bpy.props.FloatProperty(name='X', min=0, max=25,
default=0, precision=2,
description='Number total of revolutions in X axis')
bpy.types.Scene.camera_revol_y = bpy.props.FloatProperty(name='Y', min=0, max=25,
default=0, precision=2,
description='Number total of revolutions in Y axis')
bpy.types.Scene.camera_revol_z = bpy.props.FloatProperty(name='Z', min=0, max=25,
default=1, precision=2,
description='Number total of revolutions in Z axis')
bpy.types.Scene.inverse_x = bpy.props.BoolProperty(name="-X", description="Inverse rotation", default=False)
bpy.types.Scene.inverse_y = bpy.props.BoolProperty(name="-Y", description="Inverse rotation", default=False)
bpy.types.Scene.inverse_z = bpy.props.BoolProperty(name="-Z", description="Inverse rotation", default=False)
bpy.types.Scene.use_cursor = bpy.props.BoolProperty(name="Use cursor position",
description="Use cursor position instead of object origin",
default=False)
bpy.types.Scene.back_forw = bpy.props.BoolProperty(name="Back and forward",
description="Create back and forward animation",
default=False)
bpy.types.Scene.dolly_zoom = bpy.props.EnumProperty(items=(('0', "None", ""),
('1', "Dolly zoom", ""),
('2', "Dolly zoom B/F", "")),
name="Lens Effects",
description="Create a camera lens movement")
bpy.types.Scene.camera_from_lens = bpy.props.FloatProperty(name='From', min=1, max=500, default=35,
precision=3,
description='Start lens value')
bpy.types.Scene.camera_to_lens = bpy.props.FloatProperty(name='To', min=1, max=500, default=35, precision=3,
description='End lens value')
bpy.types.Scene.track = bpy.props.BoolProperty(name="Create track constraint",
description="Add a track constraint to the camera",
default=False)
def unregister():
bpy.utils.unregister_class(RunAction)
bpy.utils.unregister_class(PanelUI)
del bpy.types.Scene.camera_revol_x
del bpy.types.Scene.camera_revol_y
del bpy.types.Scene.camera_revol_z
del bpy.types.Scene.inverse_x
del bpy.types.Scene.inverse_y
del bpy.types.Scene.inverse_z
del bpy.types.Scene.use_cursor
del bpy.types.Scene.back_forw
del bpy.types.Scene.dolly_zoom
del bpy.types.Scene.camera_from_lens
del bpy.types.Scene.camera_to_lens
del bpy.types.Scene.track
if __name__ == "__main__":
register()