-This tool operates UV first. First, you need to hold the instance for operation.

--*************************************** **************************************** ***********************
-- Created: 05-05-2011
-- Last updated: 05-05-2011
-- Version: 1.0
--
-- Author: Kostadin kotev/miau_u@yahoo.com/
-- Version: 3DS MAX 2009 (shocould work in older versions too !)
--
-- Discription:
-- Randomly rotate the selected UV islands.
--
-- Usage:
-- Uvw_unwrap modifier must be applyed to object and the "Edit uvws" rolout must be open.
-- Select some UV islands or select some Verts, edges or faces of each UV islands and press the "hold selection" button.
-- Press the "random rotate" button several times.
--
--*************************************** **************************************** ***********************
-- Modify this at your own risk
/*
Macroscript uvrandomrotate_v1
Category: "miauu"
Tooltip: "UV random rotate V1.0"
Buttontext: "UV random rotate"
*/
--- 1.9.02 gaitian explanation
-- This tool first performs operations on UV. First, you need to hold the instance for operation.
-- This is good.
-- By using and looking at it, I think it is the instant rotation UV and hold is the rotation part.
-- Now I think the idea is to record the positions of all vertices, and add the Moving position to the position after the set rotation,
-- The operation was delayed for 8 days.

(
Global rol_uvrandomrotate
Try (destroydialog rol_uvrandomrotate) catch ()
Rolout rol_uvrandomrotate "UV rotate"
(
Local uvislands = #()
Local UV = undefined
Local subobjlevel = undefined

Checkbutton chkbtn_holdselection "hold selection"
Button btn_rotaterandom "random rotate"

Function randomrotateinvertsol = --- this function is used to convert some factors to all factors for processing. -- this function is very useful for vertex operations.
(
-- Get all selected vertices
Allverts = uv. getselectedvertices () --- point selected by the product
If not allverts. isempty then --- not allverts. isempty determines whether it is valid. I always convert the array when I move it.
(
-- Find and separate selected elements
While not allverts. isempty do -- is it necessary ,?
(
-- Set the first vertex as selected
UV. selectvertices # {(allverts as array) [1]}
-- Select the element of that vertex
UV. selectelement () ----- the function of selecting factors.
-- Select all vertices of this element
Elem01verts = uv. getselectedvertices ()
Append uvislands elem01verts ------------ Add the selected items to the array at a time. Is to add the bit Group of the entire vertex to the array. Fortunately, it is referenced below.
-- Remove this vertices from original selection
Allverts = allVerts-elem01verts --- and then emptied again can this release the memory, not Max self collection, I have never paid attention to this.
)
)
Else
(
MessageBox "select some UV Islands! "Title:" miauu Script Error !!! "
Chkbtn_holdselection.state = false
)
)

-- The following operations are the same as those above. You can also put them in a function for judgment.

Function randomrotateinedgesol =
(
Alledges = uv. getselectededges ()
If not alledges. isempty then
(
While not alledges. isempty do
(
UV. selectedges # {(alledges as array) [1]}
UV. selectelement ()
Elem01verts = uv. getselectededges ()
Append uvislands elem01verts -------- the design method is to use a number to add three digits. I usually use three arrays to operate this method well.
Alledges = allEdges-elem01verts
)
)
Else
(
MessageBox "select some UV Islands! "Title:" miauu Script Error !!! "
Chkbtn_holdselection.state = false
)
)
Function randomrotateinfacesol =
(
Allfaces = uv. getselectedfaces ()
If not allfaces. isempty then
(
While not allfaces. isempty do
(
UV. selectfaces # {(allfaces as array) [1]}
UV. selectelement ()
Elem01faces = uv. getselectedfaces ()
Append uvislands elem01faces
Allfaces = allFaces-elem01faces
)
)
Else
(
MessageBox "select some UV Islands! "Title:" miauu Script Error !!! "
Chkbtn_holdselection.state = false
)
)

On chkbtn_holdselection changed thestate do --- this activity can be performed at the 123 level
(
If thestate then
(
UV = modpanel. getcurrentobject () --- determine the selected level. This is very important. It is used for judgment in the skin plug-in.
If classof (UV) = unwrap_uvw then
(
Uvislands = #()
Case UV. gettvsubobjectmode () of -- UV. gettvsubobjectmode () determines the level of UV usage. Different methods are used through this determination.
(
1: (randomrotateinvertsol (); subobjlevel = 1) -- subobjlevel here is a global variable. output information is needed here.
2: (randomrotateinedgesol (); subobjlevel = 2)
3: (randomrotateinfacesol (); subobjlevel = 3)
)
)
Else
(
-- No hierarchical usage is selected. This should be very important.
MessageBox "Open the \" Edit uvws \ "window! "Title:" miauu Script Error !!! "
Chkbtn_holdselection.state = false
)
)
Else
(
Uvislands = #()
)
)

On btn_rotaterandom pressed do
(
Case subobjlevel of --- subobjlevel, which is the output unit above. This determines whether it is an operation line of the edge or a surface operation/
(
1:
(
For I = 1 to uvislands. Count do --- I think the design here is not very reasonable.
(
UV. selectvertices uvislands [I] -- in fact, it is reasonable to think about it. If there is a choice between vertices and edges, here is the one I chose at that level.
UV. rotateselectedcenter (random-3.14159 3.14159)
-- <Void> <unwrap_uvw>. moveselected <point3> offset
-- <Void> <unwrap_uvw>. rotateselected <float> Angle <point3> AXIS
-- The above all have their syntax.
-- In this way, the operation/
)
)
2:
(
For I = 1 to uvislands. Count do
(
UV. selectedges uvislands [I]
UV. rotateselectedcenter (random-3.14159 3.14159)
)
)
3:
(
For I = 1 to uvislands. Count do
(
UV. selectfaces uvislands [I]
UV. rotateselectedcenter (random-3.14159 3.14159)
)
)
)
)
)
Createdialog rol_uvrandomrotate 84 54 style: # (# style_titlebar, # style_sysmenu, # style_toolwindow)
)