Simple Manipulators

[Anonymous]

Hi,
I've been having this wierd problem. I am making a new helper that creates a guide (a line)
from 2 click you make. I am using the line (thus the vector) as the x axis. As you would understand , I am using the line as a new transformation matrix. Applying the Matrix3 from the tool is easy:

nodetm = newTM   -- where nodeTM is a direct access to the newly created transform matrix.

The problem is that I really need to create this node by another UI or functions. So the Script won't get through the "tool" part. This will result in not applying the new Matrix3 I created.

Question:
Is there a way to access to the node or its transform from the updategizmos?

The help files says:

Methods:
<void><MixinInterface:gizmoShape>.startNewLine()
Starts a new line in the gizmo.

<void><MixinInterface:gizmoShape>addPoint <point3 by value>point
Adds a new point to the last line created.

<void><MixinInterface:gizmoShape>transform <matrix3 by value>point
Transforms the gizmo by the given matrix3 value

I've been trying everything from "this" "target" "node" "nodeTM" or using the node i created.transform and nothing worked... Here is my example code since i can't show my real actual code from my job:

plugin simplemanipulator HelperTest
name:"MyTest"
category:"Test"
classID:#(0x6d92d655, 0x4db1aac6)

( 
 parameters main
 (
 Startpos type:#point3 default:
 Endpos type:#point3 default:
 )
 
 on updategizmos do
 (
 this.clearGizmos()
 local MyGizmo = manip.makeGizmoShape()
 local newmatrix = matrix3    
 local color1 = 
 
 --Part of code that I wish would work
 MyGizmo.transform = newmatrix -- says Unknown property: "transform" in <MixinInterface:gizmoShape> <<
 print this  -- This will only point to my manipulator , not the helper / gizmo / node
 print target -- undefined
 print node -- undefined
 print nodeTM -- undefined
 -----------------------------------------
 
 -- Draw Gizmo
 MyGizmo.startNewLine()
 MyGizmo.addPoint startpos
 MyGizmo.addPoint endpos
 this.addGizmoShape MyGizmo 0 color1 color1
 )
 
 tool create
 (
 on mousePoint  click do
 (
 case click of
 (
 1: 
 (
 startpos = worldpoint
 )
 3:
 (
 endpos = worldpoint
 #stop
 )
 )
 )
 )
)

[Anonymous]

Within the updateGizmos the node is referred to as "node" 😄

 
on updateGizmos do 
( 
 local giz
 local yourNode = node
 print yourNode.transform
 giz = manip.makeGizmoShape()
 ...
)

Also important to note: You cannot directly set the transform of a gizmo via giz.transform = (matrix3).

With gizmos it is instead a method: giz.transform() which applies a matrix3 transformation to the gizmo.

giz.transform (inverse yourNode.transform)

[Anonymous]

I've been trying everything and i can't get to the node. I am ultimately trying to change position of this node at least if i could change it's transform matrix.

Here is my code , try it if you want. As you can see i am trying to assign a new matrix with a big offset in its position and nothing changes.

and the print node.transform does a Unknown property: "transform" in undefined <<

plugin simplemanipulator TH4Test
name:"MyTest"
category:"Test"
classID:#(0x6d92d655, 0x4db1aac6)

( 
 parameters main  rollout:paramRollout 
 (
 myLength type:#float ui:spn1 default:20
 )
 
 rollout paramRollout "Parameters" width:160 height:120
 (
 spinner spn1 "" pos: width:69 height:16 range:
 
 on spn1 changed value do
 (
 myLength = value
 )
 )
 
 
 on updategizmos do
 (
 local color1 = 
 
 this.clearGizmos()
 local MyGizmo = manip.makeGizmoShape()
 
 local yourNode = node
 print yourNode.transform
 MyGizmo.transform (matrix3    )
 
 MyGizmo.startNewLine()
 MyGizmo.addPoint 
 MyGizmo.addPoint 
 this.addGizmoShape MyGizmo 0 color1 color1

 )
 
 tool create
 (
 on mousePoint click do
 (
 case click of
 (
 1: 
 (
 nodetm.position = worldpoint
 #stop
 )
 )
 )
 )
)

[Anonymous]

Yours likely isn't working because you need "on canManipulateNode(...)"

Here is an example for you (a snippet from my stereoscopic camera rig):

plugin simpleManipulator Eye_Gizmo
name:"Eye Gizmo"
invisible:true
classID:#(0x47294766, 0x7c49a8b6)
( 
 --******************************************************************************************
 --Events
 --******************************************************************************************
 on canManipulateNode n do
 (
 --If node is geometry or helper...
 if (Superclassof n == GeometryClass) or (Superclassof n == helper) then (true)
 ) 
 
 on updateGizmos do 
 ( 
 local giz
 local thisNode = node 
 ( 
 this.clearGizmos() 

 nodeTM = matrix3 1 
 --Reverse any scewing caused by scale (if any)
 preScale nodeTM (inverse (scaleMatrix thisNode.scale)).scalepart
 --Rotate eyes to look up
 rotateX nodeTM 90
 
 giz = manip.makeGizmoShape()

 this.addGizmoShape giz 0  
 
 ------------------------------------------------------------------------------------------------------------------
 --/////////////////////////////////////////////////////////////////////////////////////////////
 --EYES--------------------------------------------------------------------------------------------------------
 fn makeEye eye2 eClr obj m =
 (
 radius = 10
 eyeDistance = 30
 eyeMatrix =
 ( -- Separate transform offsets for left/right eyes
 if (eye2 == true) then
 (
 (matrix3    )
 )
 else
 (
 (matrix3    )
 )
 )
 
 fn drawCircle thePoint axis em g =
 ( --Function for building gizmo lines circles with a given radius
 divs = 30
 g.addPoint (thePoint * em)
 for i=1 to divs do
 (
 thePoint = thePoint * ((angleaxis (360/divs) axis) as quat)
 g.addPoint (thePoint * em)
 )
 g.startNewLine()
 )
 
 gizTmp = manip.makeGizmoShape()

 drawCircle   eyeMatrix gizTmp
 drawCircle   eyeMatrix gizTmp
 drawCircle   eyeMatrix gizTmp
 drawCircle   eyeMatrix gizTmp --iris
 drawCircle   eyeMatrix gizTmp --pupil

 --Apply transform to the given eye shape
 gizTmp.transform m
 --Add new eye shape to gizmo
 this.addGizmoShape gizTmp 2 eClr eClr
 )
 eyeCol = #(,) --Red/Cyan
 makeEye false eyeCol thisNode nodeTM --Left eye
 makeEye true eyeCol thisNode nodeTM --Right eye
 )
 )
)