diff options
Diffstat (limited to 'io_anim_nuke_chan/export_nuke_chan.py')
-rw-r--r-- | io_anim_nuke_chan/export_nuke_chan.py | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/io_anim_nuke_chan/export_nuke_chan.py b/io_anim_nuke_chan/export_nuke_chan.py new file mode 100644 index 00000000..3760e342 --- /dev/null +++ b/io_anim_nuke_chan/export_nuke_chan.py @@ -0,0 +1,96 @@ +# ##### 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 LICENSE BLOCK ##### + +""" This script is an exporter to the nuke's .chan files. +It takes the currently active object and writes it's transformation data +into a text file with .chan extension.""" + +from mathutils import Matrix +from math import radians, degrees, atan2 + + +def save_chan(context, filepath, y_up, rot_ord): + + # get the active scene and object + scene = context.scene + obj = context.active_object + + # get the range of an animation + f_start = scene.frame_start + f_end = scene.frame_end + + # get the resolution (needed by nuke) + res_x = scene.render.resolution_x + res_y = scene.render.resolution_y + res_ratio = res_y / res_x + + # prepare the correcting matrix + rot_mat = Matrix.Rotation(radians(-90.0), 4, 'X').to_4x4() + + filehandle = open(filepath, 'w') + fw = filehandle.write + + # iterate the frames + for frame in range(f_start, f_end, 1): + + # set the current frame + scene.frame_set(frame) + + # get the objects world matrix + mat = obj.matrix_world.copy() + + # if the setting is proper use the rotation matrix + # to flip the Z and Y axis + if y_up: + mat = rot_mat * mat + + # create the first component of a new line, the frame number + fw("%i\t" % frame) + + # create transform component + t = mat.to_translation() + fw("%f\t%f\t%f\t" % t[:]) + + # create rotation component + r = mat.to_euler(rot_ord) + + fw("%f\t%f\t%f\t" % (degrees(r[0]), degrees(r[1]), degrees(r[2]))) + + # if we have a camera, add the focal length + if obj.type == 'CAMERA': + # I've found via the experiments that this is a blenders + # default sensor size (in mm) + sensor_x = 32.0 + # the vertical sensor size we get by multiplying the sensor_x by + # resolution ratio + sensor_y = sensor_x * res_ratio + cam_lens = obj.data.lens + # calculate the vertical field of view + # we know the vertical size of (virtual) sensor, the focal length + # of the camera so all we need to do is to feed this data to + # atan2 function whitch returns the degree (in radians) of + # an angle formed by a triangle with two legs of a given lengths + vfov = degrees(atan2(sensor_y / 2, cam_lens))*2 + fw("%f" % vfov) + + fw("\n") + + # after the whole loop close the file + filehandle.close() + + return {'FINISHED'} |