Hello,
i recentely stummbled upon a script from “Jesterking” to open 3dm files in Blender. It works great but the camera dimensions arent being converted properly. I only found a short thread from 2018 about this but the problem still doesnt seem to be resolved.
Is there any fix or workaround to achieve the exact same camera settings in both programs ?
Thanks in advance for any information!
I don’t think there is a work-around other than fixing the code 
/jesterKing
Well? 
Definitely at some point
I wrote these two scripts to export named views from Rhino and import them into blender:
Rhino
import rhinoscriptsyntax as rs
import scriptcontext as sc
import json
import Rhino
import System.Environment
def ViewData():
view_port = sc.doc.Views.ActiveView.ActiveViewport
if not view_port.IsPerspectiveProjection: return None
width = view_port.Size.Width
height = view_port.Size.Height
fov = view_port.GetCameraAngle()[3]*2
lens_length = view_port.Camera35mmLensLength
camera_location = view_port.CameraLocation
clipping_near = view_port.GetFrustumNearPlane()[1].Origin
clipping_near = clipping_near.DistanceTo(camera_location)
clipping_far = view_port.GetFrustumFarPlane()[1].Origin
clipping_far = clipping_far.DistanceTo(camera_location)
camera_rot_plane = Rhino.Geometry.Plane(
Rhino.Geometry.Point3d.Origin,
view_port.CameraX,
view_port.CameraY)
transformed_plane = Rhino.Geometry.Plane.WorldXY
rot_transform = Rhino.Geometry.Transform.ChangeBasis(camera_rot_plane, transformed_plane)
camera_rotation = (Rhino.Geometry.Transform.GetYawPitchRoll(rot_transform)[1:])
camera_rotation = (camera_rotation[2], camera_rotation[1], camera_rotation[0])
camera_rotation = str(camera_rotation)
camera_rotation = camera_rotation[1:-1]
camera_data = [width, height, "Perspective", fov, lens_length, camera_location.ToString(), camera_rotation, clipping_near, clipping_far]
return camera_data
sc.doc.Views.RedrawEnabled = False
cameraData = {}
for nv in sc.doc.NamedViews:
sc.doc.Views.ActiveView.MainViewport.PushViewInfo(nv, False)
data = ViewData()
if data:
entry = {
"camera_width": data[0],
"camera_height": data[1],
"camera_lensType": data[2],
"camera_fov": data[3],
"camera_lensLength": data[4],
"camera_location": data[5],
"camera_rotation": data[6],
"camera_clippingNear" : data[7],
"camera_clippingFar" : data[8]
}
cameraData[str(nv.Name)] = entry
desktop = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Desktop)
doc_name = rs.DocumentName()[:-4]
folder = rs.BrowseForFolder(folder=desktop, message=None, title="Save Location")
if folder:
json_filename = folder + '\\' + doc_name + '_BlenderCamera.json'
print json_filename
with open(json_filename, 'w') as f: json.dump({}, f)
with open(json_filename, 'w') as f: json.dump(cameraData, f, indent = 4, sort_keys=True)
sc.doc.Views.RedrawEnabled = True
sc.doc.Views.Redraw()
Blender
import bpy
import os
import math
import json
pi = math.pi
scene = bpy.context.scene
scale = 1/1000
use_fov = False
def ReadData(filename):
try:
with open(filename, 'r') as f:
datastore = json.load(f)
return datastore
except IOError:
print ("Reading Failed")
def AddCamera(view):
camera_loc = [float(l)*scale for l in d_camera[view]["camera_location"].split(",")]
camera_rot = [float(l) for l in d_camera[view]["camera_rotation"].split(",")]
bpy.ops.object.camera_add(enter_editmode=False, align='VIEW', location=camera_loc, rotation=camera_rot )
currentCameraObj = bpy.data.objects[bpy.context.active_object.name]
scene.camera = currentCameraObj
currentCameraObj.name = view
if use_fov:
currentCameraObj.data.lens_unit = 'FOV'
currentCameraObj.data.angle = float(d_camera[view]["camera_fov"])
else:
currentCameraObj.data.lens_unit = 'MILLIMETERS'
currentCameraObj.data.sensor_width = 57.519
currentCameraObj.data.lens = float(d_camera[view]["camera_lensLength"])
#Align View to Main Camera
area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
area.spaces[0].region_3d.view_perspective = 'CAMERA'
#Clipping
clippingNear = float(d_camera[view]["camera_clippingNear"]) * scale
clippingFar = float(d_camera[view]["camera_clippingFar"]) * scale
currentCameraObj.data.clip_start = clippingNear
currentCameraObj.data.clip_end = clippingFar
bpy.context.scene.render.resolution_y = float(d_camera[view]["camera_height"])
bpy.context.scene.render.resolution_x = float(d_camera[view]["camera_width"])
path = r'C:\\Users\\Alasdair\\Desktop\\'
json_filename = path + "Blender-Camera.json"
d_camera = ReadData(json_filename)
for view in d_camera:
AddCamera(view)
Just replace the path with where you saved the named views.
Have you not tried the import_3dm add-on yet?
1 Like