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camera filmback mel

hi there,

iam writing a simple script that will change the filmback settings of the camera and the settings of the render globals, so i have a global proc.
and here is the mel:

global proc cameraSetUp ()
{

select perspShape;
setAttr perspShape.horizontalFilmAperture 0.85;
setAttr perspShape.verticalFilmAperture 0.466;
setAttr perspShape.lensSqueezeRatio 1.0;
setAttr defaultResolution.aspectLock true;
setAttr defaultResolution.width 2048;
setAttr defaultResolution.height 1108;
camera -e -displayFilmGate on -displayResolution off -filmFit fill -displaySafeAction on -overscan 1.3 persp;

}

all of the settings in the render globals works fine,
but the filmback of the camera did not change, no error in the script editor.
then i checked the AEcameraFilmbackNew.mel and saw that the script is executing the default filmback attribute of the camera.

THE QUESTION IS: HOW CAN I MAKE THE DEFAULT FILMBACK SETTING OF THE CAMERA'S FILMGATE TO "35mm 1.85 projection"? IS THERE SOMETHING MISSING IN MY SCRIPT?

thanx for the help.

:rolleyes:

If you check the Script Editor when you change this (with Echo All Commands turned on), you'll see that changing the 'Film Gate' only calls AE... functions - (AE functions are for changing things in the Attribute Editor)

In the code that comes up for me, the following variables are mentioned:
perspShape.horizontalFilmAperture
perspShape.verticalFilmAperture
perspShape.lensSqueezeRatio
perspShape.focalLength

So the variables in here are the only ones that you need to change to set it up - the drop down box itself just tells it to set these variables to a group of presets.

gotcha hugh, thanx.

one more thing,

if an object was declared as string e.g. string $camera [] = `ls -sl`; and we now tha some of the camera attributes has a boolean data type,

how should i shift from string to boolean?

`ls -sl`will return names of all selected objects. In your example you are storing the names in a string array. To get a value of an attribute of some selected object you use the getAttr command. An example:

Let's say we want to find out if a poly object (a mesh) called myObjectShape is in the selection and if it's displayVertices attribute is set.

Code:

string $sSel[] = `ls -sl -dag -typ mesh`;        // Notice the use of -dag and -typ switches.

                                                // Normally you're only selecting transform nodes in the Maya view ports.

                                                // The -dag is used to list all the shape nodes (among other things) as well.

                                                // We're only interested in mesh objects so with the -typ mesh we'll limit the

                                                // ls command to list meshes only in the selection

int $iSize = size($sSel), $i;



if($iSize > 0)

{

        for($i = 0; $i < $iSize; $i++)

        {

                if($sSel[$i] == "myObjectShape")

                {

                        // By looking in to the DG Node reference we know that the .dv attribute is a boolean.

                        // However we define booleans as integers because there is no bool type in mel.



                        int $bDv = `getAttr ($sSel[$i] + ".dv")`; // Now the $bDv variable contains the value of myObjectShape.dv



                        // Let's find out if it's set

                        if($bDv)

                        {

                                print("myObjectShape.dv is on\n");

                                // <Do other stuff what needs to be done if the attribute is set>

                        }

                        else

                        {

                                print("myObjectShape.dv is off\n");

                                // <Do other stuff what needs to be done if the attribute is not set>

                        }

                }

                else

                        warning("myObjectShape could not be found in the selection!\n");

        }

}

else

{

        warning("Nothing selected...\n");

}

Not sure if this is a good example. Lemme know if there's something that needs to be clarified more elaborately.

AAAAAAAAA!!!!! MY EYES!!!!

ok I removed the comments just for brevity, but not as a style comment.

Once again, a "for-in" loop will clean this puppy right up, and some curly-brackets have been removed:

Code:

string $sSel[] = `ls -sl -dag -typ mesh`;        

string $currSelection;



for ($currSelection in $sSel)

        {

                if($currSelection == "myObjectShape")

                {



                        int $bDv = `getAttr ($currSelection + ".dv")`;



                        if($bDv)

                                print("myObjectShape.dv is on\n");

                        else

                                print("myObjectShape.dv is off\n");

                }

                else

                        warning("myObjectShape could not be found in the selection!\n");

}

else

        warning("Nothing selected...\n");

-- Mark

Mark: what's the difference between:

foreach($currSelection in $sSel)

and

for($currSelection in $sSel)

?

Didn't know you can write:

Code:

foreach($foo in $bar)

        // blah blah

else

        // blah blah

Gonna try to remember that...

Thanks.

thanx to you guys, this is a kind of great help for my
first little script.

so what is the type for the on and off of the resoution gate of the camera?

What's the MEL command to turn it off, you mean? Cos the type is a bool....

The command is:

camera -e -displayFilmGate $filmGate -displayResolution $resGate -overscan $overscan $camName;

where $filmGate and $resGate are booleans (true/on/1 or false/off/0), $overscan is a float and $camName is the name of the camera.

hahahaha my computer language neurons are screwed up. "foreach" isn't a MEL thing, it's C-shell.

I've edited my earlier post.

-- Mark

what i mean hugh is from mark and kbrown's example:

string $sSel[] = `ls -sl -dag -typ mesh`;

i want to be like this for my script:

string $camera[] = `ls -sl -dag -typ ?????`;

i'm just asking for the type so that i can define the booleans as integer, then i'm done with my script.

not "-type camera"?

-- Mark

is this answer ?

string $camera [] = `ls -sl -dag -type camera`;

Why not try it and find out?

of course you can always use ls -sl -showType to see what type the selected object is, then use that type as an argument to the -type flag...

-- Mark