Switch between perspective and matching orthographic view. The latest version is v3. #Release

PS_perspOrthoToggl_v3.py

# Latest version, uses Tumble Pivot Point viewport
# feature, and proprietary algorithm, works in all recent
# versions of Maya, Python 2.7 / 3+. Gives more predictable
# and stable results.
# Pavel Sevets 2022

import maya.cmds as mc
import maya.api.OpenMaya as om
from math import pi

def PS_perspOrthoToggle():

    if mc.contextInfo( 'tumbleContext', ex=1, ):
        mc.tumbleCtx( 'tumbleContext', e=1, ot=1, asp=1, lt=0 )

    panel = mc.getPanel( wf=1 )
    if 'modelPanel' not in panel: return 1
    cam = mc.modelPanel( panel, q=1, cam=1 )
    if mc.objectType( cam, i='camera' ):
        cam = mc.listRelatives( cam, p=1 )[0]

    if not mc.camera( cam, q=1, o=1 ):

        # store camera's FOV in custom attribute
        if not mc.attributeQuery( 'p2oFOV', node=cam, ex=1 ):
            mc.addAttr( cam, ln='p2oFOV', at='float', dv=0, h=1 )

        mc.setAttr( cam + '.p2oFOV', mc.camera( cam, q=1, hfv=1 ) )

        # camera's transformation matrix
        M = om.MMatrix( mc.xform( cam, q=1, ws=1, m=1 ) )
        M = om.MTransformationMatrix( M )

        # quantize camera rotation to 90 degrees
        oro = mc.xform( cam, q=1, ws=1, ro=1 )
        cro = [ round( r / 90.0 ) * pi / 2.0 for r in oro ]
        oro = [ r * pi / 180.0 for r in oro ]

        # calculating local space quaternion
        # to correct camera's orientation
        q1 = om.MEulerRotation( oro ).asMatrix()
        q1 = om.MTransformationMatrix( q1 ).rotation(1)

        q2 = om.MEulerRotation( cro ).asMatrix()
        q2 = om.MTransformationMatrix( q2 ).rotation(1)

        q = q2 * q1.inverse()

        # rotate matrix with quaternion
        M.rotateBy( q, om.MSpace.kObject )

        # get camera's tumble pivot and rotate pivot
        tp = om.MVector( mc.camera( cam, q=1, wci=1 ) )
        tr = om.MVector( mc.xform( cam, q=1, ws=1, rp=1 ) )

        # recalc tumble pivot position
        # in camera's local space
        tp = M.asMatrix() * ( tp - tr )

        # rotate camera around it's tumble pivot
        tp -= q.inverse().asMatrix() * tp

        # translate camera to the new position
        M.translateBy( tp, om.MSpace.kObject )

        # apply modified transform via matrix
        mc.xform( cam, ws=1, m=M.asMatrix() )

        mc.viewPlace( cam, up=mc.camera( cam, q=1, wup=1 ), o=1 )

        # make manip aligned to screen axes
        # comment two lines below to keep manip intact
        rot = mc.xform( cam, q=1, ro=1, ws=1, a=1 )
        mc.manipPivot( o=rot )

    else:
        ow = mc.camera( cam, q=1, ow=1 )
        coi = mc.camera( cam, q=1, coi=1 )

        M = om.MMatrix( mc.xform( cam, q=1, ws=1, m=1 ) )
        M = om.MTransformationMatrix( M ).asRotateMatrix()
        v = M.inverse() * om.MVector( 0.0, 0.0, -1.0 )
        tp = v * ( coi - ow )

        # correct camera's roll if
        # it's upside down or tilted
        wup = om.MVector( mc.camera( cam, q=1, wup=1 ) )

        # uncomment below to turn off roll correction
        #'''
        M = om.MMatrix( mc.xform( cam, q=1, ws=1, m=1 ) )
        M = om.MTransformationMatrix( M ).asRotateMatrix()
        v = M.inverse() * om.MVector( 0.0, 0.0, -1.0 )
        N = v ^ om.MVector( 0.0, 1.0, 0.0 )
        if N.length() >= 1E-5:
            K = - ( N * wup ) / ( N * N )
            P = ( wup + K * N ).normal()
            if P * om.MVector( 0.0, 1.0, 0.0 ) < 0.0:
                P *= -1.0
            wup = P
        # uncomment below to turn off roll correction
        #'''

        mc.xform( cam, ws=1, r=1, t=tp )
        mc.camera( cam, e=1, coi=ow )
        mc.viewPlace( cam, up=wup, p=1 )
        if mc.attributeQuery( 'p2oFOV', node=cam, ex=1 ):
            mc.viewPlace( cam, fov=mc.getAttr( cam + '.p2oFOV' ) )

    return 0

# PS_perspOrthoToggle()

PS_perspOrthoToggle_v1.py

# Old Pymel based version

# Based on scripts by James Drew, Davide Alidosi from 
# http://www.creativecrash.com/maya/script/persptoortho 
# and Deniseich from 
# http://www.creativecrash.com/maya/script/full-130-scripts-for-modeling-uv-video-tutorials-for-each

import maya.cmds as mc
import pymel.core.datatypes as dt

global gP2Ofov

def PS_perspOrthoToggle ():

	#this gets the current active camera
	cam = mc.modelPanel( mc.getPanel( wf=1 ), q=1, cam=1 )
#	cam = mc.modelPanel( 'modelPanel4', q=1, cam=1 )

	#if current camera is in orthographic mode return to perspective mode
	if mc.camera( cam, q=1, o=1 ):
		
		gP2Oow = mc.camera( cam, q=1, ow=1 )
		gP2Ocoi = mc.camera( cam, q=1, coi=1 )
		v = dt.TransformationMatrix( mc.xform( cam, q=1, ws=1, m=1 ) ).asRotateMatrix().inverse() * dt.Vector(0,0,-1)
		tp = v * ( gP2Ocoi - gP2Oow )
		mc.xform( cam, ws=1, r=1, t=tp )
		mc.camera( cam, e=1, coi=gP2Oow )
		mc.camera( cam, e=1, o=0 )
		global gP2Ofov
		if gP2Ofov: mc.camera( cam, e=1, hfv=gP2Ofov )

	else:
		
		#stores camera attributes for returning to persp
		gP2Otr  = mc.xform( cam, q=1, ws=1, t=1 )
		gP2Oro  = mc.xform( cam, q=1, ws=1, ro=1 )
		gP2Ocoi = mc.camera( cam, q=1, coi=1 )
		
		global gP2Ofov
		gP2Ofov = mc.camera( cam, q=1, hfv=1 )

		mc.camera( cam, e=1, o=1 )
		mc.camera( cam, e=1, ow=gP2Ocoi )
		
		v = dt.TransformationMatrix( mc.xform( cam, q=1, ws=1, m=1 ) ).asRotateMatrix().inverse() * dt.Vector(0,0,-1)
		
		#quantize camera rotation to 90 degrees
		cro = [ round( ri / 90 ) * 90 for ri in gP2Oro ]
		mc.xform( cam, ws=1, ro=cro )
		
		# match camera position to objects on screen
		cp = dt.Vector( gP2Otr )
		tp = cp + v * gP2Ocoi
		
		def _c( a, b ): return 1 if a > b else -1
		
		np = tp + gP2Ocoi * dt.Vector( _c( cp.x, tp.x ), _c( cp.y, tp.y ), _c( cp.z, tp.z ) )
		
		av = abs( v )
		n = av.index( max( av ) )[0]
		tp[n] = np[n]

		mc.xform( cam, ws=1, a=1, t=tp )


#PS_perspOrthoToggle()

PS_perspOrthoToggle_v2.py

# This version works with Maya API 2.0 and has no delay at start

# Based on scripts by James Drew, Davide Alidosi from 
# http://www.creativecrash.com/maya/script/persptoortho 
# and Deniseich from 
# http://www.creativecrash.com/maya/script/full-130-scripts-for-modeling-uv-video-tutorials-for-each

import maya.cmds as mc
import maya.api.OpenMaya as om

global gP2Ofov
gP2Ofov = None

def PS_perspOrthoToggle ():
	
	#this gets the current active camera
	cam = mc.modelPanel( mc.getPanel( wf=1 ), q=1, cam=1 )
#	cam = mc.modelPanel( 'modelPanel4', q=1, cam=1 )

	#if current camera is in orthographic mode return to perspective mode
	if mc.camera( cam, q=1, o=1 ):

		gP2Oow = mc.camera( cam, q=1, ow=1 )
		gP2Ocoi = mc.camera( cam, q=1, coi=1 )
		
		M = om.MMatrix( mc.xform( cam, q=1, ws=1, m=1 ) )
		v = om.MTransformationMatrix( M ).asRotateMatrix().inverse() * om.MVector( 0.0, 0.0, -1.0 )
		tp = v * ( gP2Ocoi - gP2Oow )
		mc.xform( cam, ws=1, r=1, t=[ tp.x, tp.y, tp.z ] )
		mc.camera( cam, e=1, coi=gP2Oow )
		mc.camera( cam, e=1, o=0 )
		
		global gP2Ofov
		if gP2Ofov: mc.camera( cam, e=1, hfv=gP2Ofov )

	else:
		
		#stores camera attributes for returning to persp
		gP2Otr  = mc.xform( cam, q=1, ws=1, t=1 )
		gP2Oro  = mc.xform( cam, q=1, ws=1, ro=1 )
		gP2Ocoi = mc.camera( cam, q=1, coi=1 )
		
		global gP2Ofov
		gP2Ofov = mc.camera( cam, q=1, hfv=1 )

		mc.camera( cam, e=1, o=1 )
		mc.camera( cam, e=1, ow=gP2Ocoi )
		
		M = om.MMatrix( mc.xform( cam, q=1, ws=1, m=1 ) )
		v = om.MTransformationMatrix( M ).asRotateMatrix().inverse() * om.MVector( 0.0, 0.0, -1.0 )
				
		#quantize camera rotation to 90 degrees
		cro = [ round( ri / 90 ) * 90 for ri in gP2Oro ]
		mc.xform( cam, ws=1, ro=cro )
		
		# match camera position to objects on screen
		cp = om.MVector( gP2Otr[0], gP2Otr[1], gP2Otr[2] )
		tp = cp + v * gP2Ocoi
		
		def _c( a, b ): return 1 if a > b else -1
		
		np = tp + om.MVector( _c( cp.x, tp.x ), _c( cp.y, tp.y ), _c( cp.z, tp.z ) ) * gP2Ocoi
		
		av = [ abs( v.x ), abs( v.y ), abs( v.z ) ]
		m = max( av )
		if   m == av[0]:
			tp.x = np.x
		elif m == av[1]:
			tp.y = np.y
		else:
			tp.z = np.z
			
		mc.xform( cam, ws=1, a=1, t=[ tp.x, tp.y, tp.z ] )


#PS_perspOrthoToggle()

@SEVEZ Please support for Maya 2023, Can't imagine my modeling life without it too!
This is one of the best script ever
Many Thank!!!!!

Guys, 2023 support is in progress, stay tuned

I’m already using this on 23 with no issues From: Pavel Sevets ***@***.***> Sent: 03 May 2022 12:20 To: SEVEZ ***@***.***> Cc: Mark Playford ***@***.***>; Comment ***@***.***> Subject: Re: SEVEZ/PS_perspOrthoToggl.py @SEVEZ commented on this gist.

…

________________________________ Guys, 2023 support is in progress, stay tuned — Reply to this email directly, view it on GitHub<https://gist.github.com/7c9251661a00afc667bc#gistcomment-4152961>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANHO6MTNEH6QJWHMTCJS5UDVIEDVBANCNFSM4LHGGTJQ>. You are receiving this because you commented.Message ID: ***@***.******@***.***>>

I guess it should work fine with some minor tweaks (if any), just convert syntax from python 2.7 to 3.9. But haven’t tested it yet myself

I'm getting the same error in maya 22 and 23...# Error: line 1: SyntaxError: file line 1: name 'gP2Ofov' is used prior to global declaration.
I don't know how it works for you @markplayford

Guys, 2023 support is in progress, stay tuned

thank you man!!!

pls update :( this is that one script I can't do without..

any news?

Thank you. Can not wait. :)

Guys, 2023 support is in progress, stay tuned

Hello! Any estimation on this?

Can't work as I want without it in 2023.
I'm waiting...

any progress in maya 2023 ?

Error: name 'gP2Ofov' is used prior to global declaration

Hello guys, and apologies for late response. Uploaded an updated version, works in all recent versions of Maya, and Python 2.7 / 3+. Download v3 and use the same way as before. This version relies on Tumble Pivot point feature and uses a proprietary algorithm now. Proven to give a more predictable and stable result. Cheers

P.S. If you prefer to have your current manipulator axes intact when switching, comment out lines 72 and 73 by putting # in the beginning of the commands.

Thank you!! :)

Sadly, I have the same "# Error: name 'gP2Ofov' is used prior to global declaration" as before...

Hello guys, and apologies for late response. Uploaded an updated version, works in all recent versions of Maya, and Python 2.7 / 3+. Download v3 and use the same way as before. This version relies on Tumble Pivot point feature and uses a proprietary algorithm now. Proven to give a more predictable and stable result. Cheers

P.S. If you prefer to have your current manipulator axes intact when switching, comment out lines 72 and 73 by putting # in the beginning of the commands.

Thank You :)

Thank you!! :)
Sadly, I have the same "# Error: name 'gP2Ofov' is used prior to global declaration" as before...

Which maya version you're using. It works fine for me, tested on 2018 and 2020.

Download v3, not v2. GitHub doesn’t let me reorder the files, alas.

Download v3, not v2. GitHub doesn’t let me reorder the files, so v3 is in the bottom.

Ah, right!! I was using v2. :) Thanks. It works now!

Hello guys, and apologies for late response. Uploaded an updated version, works in all recent versions of Maya, and Python 2.7 / 3+. Download v3 and use the same way as before. This version relies on Tumble Pivot point feature and uses a proprietary algorithm now. Proven to give a more predictable and stable result. Cheers

P.S. If you prefer to have your current manipulator axes intact when switching, comment out lines 72 and 73 by putting # in the beginning of the commands.

Thank you very much. Everything works. Great job :)

Thank you!!!!!!!!!! for all your efforts, everything works perfectly!!!!!!!

v3 has been updated - there was a small problem with maintaining the scale after zooming an ortho view and then switching from ortho to persp.

Hello,

Thanks for maintaining this script!

I'd like to have this functionality as I recently got into blender but now find myself back in maya for a project. I miss this a lot.

I have downloaded v3 and copied it into my documents maya version (2020) scripts folder.

I am unsure what I do with the python code but figured it might be a runtime command which I add via the hotkey editor? This way I can assign a hotkey to the command?

I've set the Tumble Tool settings advised but I get the following code:

# Error: line 1: ImportError: file <maya console> line 1: No module named PS_perspOrthoToggle #

Anyway, it's not working and I'm not sure if I've set it up correctly so asking for your help.

Thanks in advance.

Error: line 1: ImportError: file line 1: No module named PS_perspOrthoToggle

I am unsure what I do with the python code but figured it might be a runtime command which I add via the hotkey editor? This way I can assign a hotkey to the command?

Hey,

Thanks for getting back to me so quickly. Much appreciated.

This is what I have so far, I figured I was on the right track. Can you see anything wrong with how I have it setup?

The fact the script is falling over so early in the code suggests to me the custom command cannot find the script?

markesmith

Hey,

Thanks for getting back to me so quickly. Much appreciated.

This is what I have so far, I figured I was on the right track. Can you see anything wrong with how I have it setup?

change script name from PS_perspOrthoToggl_v3.py to PS_perspOrthoToggl.py

Ahhhh I have to rename the script file it self !

Nice. Works well now.

For the record the downloaded file is named

PS_perspOrthoToggl_v3.py

I had to rename it to

PS_perspOrthoToggle.py

Confusion over.

Got it. Thanks both.