Pivot Point Rotation Only

Anonymous — Tue, 08 Dec 2020 15:56:36 GMT

Hi all,

I am looking for some help. I was introduced to Maxscript recently, and I am trying to develop a tool where I can work with the pivot rotation only without moving the object.

At the moment I am dealing with a few issues which I am struggling to figure out. One of them is, on the spinner in Y-axis the rotation animation does a strange flickery. The other issue is, if I move the pivot position previously when trying to move the rotation spinners, the object moves from his position what shouldn't happen. Does anyone know what I am missing to make it work properly?

I did go this far:

s = selection as array -

if $ == undefined then
(
messageBox "Please select one or more objects in the scene and try again."
)
else
(
rollout PivotPointModifier "Pivot Point Modifier" width:288 height:78
(
local Xrot = 0
local Yrot = 0
local Zrot = 0
local RotateEnabled = false

GroupBox 'grp_Rotation' "" pos:[9,8] width:273 height:56 align:#left
checkbox 'chk_Enable_Rotation' "Enable Rotation" pos:[15,9] width:99 height:16 checked:false align:#left
spinner 'spn_Xrotation' "X Axis" pos:[18,31] width:57 height:16 range:[-360,360,0] align:#left
spinner 'spn_Yrotation' "Y Axis" pos:[106,32] width:57 height:16 range:[-360,360,0] align:#left
spinner 'spn_Zrotation' "Z Axis" pos:[194,32] width:57 height:16 range:[-360,360,0] align:#left

/* define a function responsible for rotating the pivot in X,Y or Z-axis.*/

fn Align_Pivot obj xrot yrot zrot =
(
objrot = obj.transform.rotationpart as eulerangles
if xrot == undefined then xr = objrot.x else xr = xrot
if yrot == undefined then yr = objrot.y else yr = yrot
if zrot == undefined then zr = objrot.z else zr = zrot

toolMode.coordsys #local -- This line was created due to the fact of the pivot point rotation
-- is only visible when "local" is selected as a reference coordinate system.

theMatrix = rotate (matrix3 1) (eulerangles xr yr zr as quat)
scale theMatrix obj.scale
translate theMatrix obj.pos
obj.transform = theMatrix

obj.objectOffsetRot = inverse theMatrix.rotationPart
)

on chk_Enable_Rotation changed state do
RotateEnabled = state -- when checkbox is clicked change the state, which was defined as false previously.

on spn_Xrotation changed val do
(
Xrot = val
if RotateEnabled then
(
for obj in s do
(
Align_Pivot obj val undefined undefined
)
)
)
on spn_Yrotation changed val do
(
if RotateEnabled then
(
Yrot = val
for obj in s do
(
Align_Pivot obj undefined val undefined
)
)
)
on spn_Zrotation changed val do
(
if RotateEnabled then
(
Zrot = val
for obj in s do
(
Align_Pivot obj undefined undefined val
)
)
)
)
CreateDialog PivotPointModifier
)

Thank you all

Re: Pivot Point Rotation Only

Anonymous — Tue, 08 Dec 2020 23:16:21 GMT

I am trying to get my head around it... I came across that link today actually, and I am trying to understand how it works for my case 😉 thank you

topic Re: Pivot Point Rotation Only in 3ds Max Programming Forum

Pivot Point Rotation Only

Re: Pivot Point Rotation Only

Re: Pivot Point Rotation Only