io_export_dxf/primitive_exporters/camera_exporter.py

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 from .base_exporter import BasePrimitiveDXFExporter
   4
   5
   6 class CameraDXFExporter(BasePrimitiveDXFExporter):
   7     pass
   8
   9
  10 #-----------------------------------------------------
  11 def exportCamera(ob, mx, mw, **common):
  12     """converts Camera-Object to desired projection and representation(DXF-Entity type)
  13     """
  14     location =  mathutils.Vector(ob.loc)
  15     [location] = projected_co([location], mx)
  16     [location] = toGlobalOrigin([location])
  17     view_name=validDXFr12name(('CAM_'+ ob.name))
  18
  19     camera = Camera.Get(ob.getData(name_only=True))
  20     #print 'deb: camera=', dir(camera) #------------------
  21     if camera.type=='persp':
  22         mode = 1+2+4+16
  23         # mode flags: 1=persp, 2=frontclip, 4=backclip,16=FrontZ
  24     elif camera.type=='ortho':
  25         mode = 0+2+4+16
  26
  27     leftBottom=(0.0,0.0) # default
  28     rightTop=(1.0,1.0) # default
  29     center=(0.0,0.0) # default
  30
  31     direction = mathutils.Vector(0.0,0.0,1.0) * mx.to_euler().to_matrix() # in W-C-S
  32     direction.normalize()
  33     target=mathutils.Vector(ob.loc) - direction # in W-C-S
  34     #ratio=1.0
  35     width=height= camera.scale # for ortho-camera
  36     lens = camera.lens # for persp-camera
  37     frontClipping = -(camera.clipStart - 1.0)
  38     backClipping = -(camera.clipEnd - 1.0)
  39
  40     entities, vport, view = [], None, None
  41     c = camera_as_list[GUI_A['camera_as'].val]
  42     if c=="POINT": # export as POINT
  43         dxfPOINT = DXF.Point(points=[location],**common)
  44         entities.append(dxfPOINT)
  45     elif c=="VIEW": # export as VIEW
  46         view = DXF.View(name=view_name,
  47             center=center, width=width, height=height,
  48             frontClipping=frontClipping,backClipping=backClipping,
  49             direction=direction,target=target,lens=lens,mode=mode
  50             )
  51     elif c=="VPORT": # export as VPORT
  52         vport = DXF.VPort(name=view_name,
  53             center=center, ratio=1.0, height=height,
  54             frontClipping=frontClipping,backClipping=backClipping,
  55             direction=direction,target=target,lens=lens,mode=mode
  56             )
  57     return entities, vport, view