How to automatically fit the camera to objects in the view?

Question

I'm using blender to render avatar and avatar accessories on a website, however there is a problem, when a hat, or accessory is made a bit large, the it doesn't fit in the viewport, is there anyway to make the viewport expand or move backwards to fit the entire object automatically with python?

I usually get a camera, press 0 on the numpad to view from it, press N and then under View i select "Lock camera to View" i then select my object(s) i wish to zoom in on and press the Dot/period key. — Luka ash, Apr 28 '16 at 01:40

score 22 · Accepted Answer · edited Jan 21 '22 at 07:48

There is an operator to do exactly this. it can be called from Python or accessed from a menu.

Select the objects you wish to put in the camera view.
View -> Align View -> Align Active Camera to Selected.

Or run the operator: bpy.ops.view3d.camera_to_view_selected()

eg:

import bpy
from bpy import context
Select objects that will be rendered
for obj in context.scene.objects:
    obj.select_set(False)
for obj in context.visible_objects:
    if not (obj.hide_get() or obj.hide_render):
        obj.select_set(True)
bpy.ops.view3d.camera_to_view_selected()

There is also an object method to place a camera given input coordinates: Object.camera_fit_coords()

If you want a margin around the objects, you could temporarily reduce the cameras view angle, then restore it afterwards, or simply move the camera back along its Z axis.

Hey, I've tried your scripts, and the camera_to_view_selected function just returns "{'CANCELLED'}". Any idea why? — Noam Peled, Jul 11 '16 at 19:09

score 3 · Answer 2 · edited Jan 21 '22 at 07:49

3

I am not at all a programmer, but have you looked into the View All operator?

bpy.ops.view3d.view_all()

or perhaps the View Selected if the one above doesn't work well for you

bpy.ops.view3d.view_selected()

You can find documentation here https://www.blender.org/api/current/bpy.ops.view3d.html

edited Jan 21 '22 at 07:49

p2or

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answered Apr 28 '16 at 01:13

Duarte Farrajota Ramos

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How to automatically fit the camera to objects in the view?

2 Answers2

Select objects that will be rendered

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