Unable to convert: [] to type: Float

Hi miauu,

Thank you for these explanations. The problem is that I try to use the '.inTangent' command which needs 3 different values as shown in the example of the MAXScript Reference:

 

Examples:

 

c = bezier_position () -- create and assign new controller

 

$bar.pos.controller = c

 

k = addNewKey c 0f -- add a key at frame 0

 

k.value = [10,0,0] -- set value there

 

k.outTangentType = #slow -- and outgoing tangent type

 

k = addNewKey c 100f -- add another key at 100

 

k.value = [200,10,0] -- set value

 

k.inTangentType = #custom -- make inTangent custom

 

k.inTangent = [0.2, 0.02, 0.112] -- set its tangents

 

k.x_locked = false -- and unlock handles

 

When using '.in tangent' as shown in that example 3DSMax will show the error message telling that it can't convert these values to Float.

Do you have an idea what's wrong with that?

Ewok

I test the code in max2012 and there is no error.
But, try this:
[(0.2 as float),(0.02 as float),(0.112 as float)]
Which version of max you have?

Thank you for the workaround. But, I unfortunately I still get the same error message.

I'm working on max 2011.

I don't have max2011. Sorry.
On my max9, max2009 and max2012 when I execute your code with Ctrl+E the error not occurs. When I execute the code line by line the error not occurs.

Thank you for all your help!!!

I'll explain you what I'm trying to do. :)

I'm trying to modifiy Brad Nobles' excelent QuickTangents script to make it apply specific ease in and/or out values by using the .intangent property.

What I did. I modified the actions to bee done when the smooth button (the second one) is pressed.
Instead of smoothing the tangents I unlock de curve handles, set the tangent type to custom and I add the .intangent property in order to determine the degree of easing.

That means that from line 129 on I replaced the following code:

        on tan_smooth pressed do
        (
            GetSelKeys()
            for kframes in selkeyarray do
            (
                if tan_in.checked then kframes.intangenttype = #smooth
                if tan_out.checked then kframes.outtangenttype = #smooth
            )
        )

by this code:

        on tan_smooth pressed do
        (
            GetSelKeys()
            for kframes in selkeyarray do
            (
                if tan_in.checked then kframes.x_locked = false
                if tan_in.checked then kframes.intangenttype = #custom
                if tan_in.checked then kframes.inTangent = [0.2, 0.02, 0.112]

                if tan_out.checked then kframes.x_locked = false
                if tan_out.checked then kframes.outtangenttype = #custom
                if tan_out.checked then kframes.outTangent = [0.2, 0.02, 0.112]
            )
        )

When I now run the script (on a selected key!!!) and hit the smooth button I get the the error message:

--Unable to convert [0.2, 0.02, 0.112] to type: Float

Do you get the same result?

I test the code, but .... I don't have proper scene to see if there is a problem or not. Can you send me a simple scene.

No problem.

Here is my really simple animation scene with which I tested the script:

(mybox = box width:5 height:5 length:5
select $Box001
sliderTime = 0f
move $ [-50,0,0]
sliderTime = 15f
set animate on
move $ [100,50,25]
sliderTime = 30f
move $ [-100,-50,-25]
sliderTime = 45f
move $ [100,50,25]
sliderTime = 60f
move $ [-100,-50,-25]
set animate off
sliderTime = 0f)

I think that I found the problem.
You using this code as exmaple and based on the code you changed the original script:

c = bezier_position () -- create and assign new controller
$bar.pos.controller = c
k = addNewKey c 0f -- add a key at frame 0
k.value = [10,0,0] -- set value there
k.outTangentType = #slow -- and outgoing tangent type
k = addNewKey c 100f -- add another key at 100
k.value = [200,10,0] -- set value
k.inTangentType = #custom -- make inTangent custom
k.inTangent = [0.2, 0.02, 0.112] -- set its tangents
k.x_locked = false -- and unlock handles

This code is from maxscript help file.
Now, execute this in the listener:

(
	c = bezier_position () -- create and assign new controller
	$bar.pos.controller = c
	k = addNewKey c 0f -- add a key at frame 0
	k.value = [10,0,0] -- set value there
	k.outTangentType = #slow -- and outgoing tangent type
	k = addNewKey c 100f -- add another key at 100
	k.value = [200,10,0] -- set value
	
	format "k: % \n" k
	
	k.inTangentType = #custom -- make inTangent custom
	k.inTangent = [0.2, 0.02, 0.112] -- set its tangents
	k.x_locked = false -- and unlock handles
)

In the listener you will see:

k: #Bezier Position key(6 @ 100f)

Now, use this code and put it in the original file:

on tan_smooth pressed do
		(
			GetSelKeys()
            for kframes in selkeyarray do
            (
				
                if tan_in.checked then kframes.x_locked = false
                if tan_in.checked then kframes.inTangentType = #custom

				format "kframes: % \n" kframes

                if tan_in.checked then kframes.inTangent = [0.2, 0.02, 0.112]

                if tan_out.checked then kframes.x_locked = false
                if tan_out.checked then kframes.outtangenttype = #custom
                if tan_out.checked then kframes.outTangent = [0.2, 0.02, 0.112]
            )
		)

In the listener you will see:

kframes: #Bezier Float key(2 @ 15f)

The code from maxscript help file work with position key, while your code work with Float key.
This is from maxscript help file. Read it carefully
-----
The .inTangent and .outTangent values are Floats in keys of float controllers and Point3s for the other appropriate controllers. Default value is 0 for float controllers, [0,0,0] otherwise.
----
So, you have to use the float, not the point3 value.

if tan_in.checked then kframes.inTangent = 0.2

and the script will work as you want.

Cool,

ok, so you changed the format of "kframes".

Great, you tought me an important thing!!! I thank you very very much for you very comprehensible explanations.

This helps me a lot. I was really stuck.

Ewok

Glad to help. :)

How you will write [0.5,0.5,0.5] as float?
x[1] as float will return 0.5
x[2] as float will return 0.5
x[3] as float will return 0.5

but, you can't convert [0.5,0.5,0.5] to float because there are 3 numbers, not one.
Also, x[1] = 0.5 is a float and there is no need to convert it to float.