combining 2 mask into 1

[Juha_Kinnunen]

Hi,

I have two MASK OPERATORs on layer that I would like to combine into one MASK.As I undrerstund it,it should work when I just select ADD -in MODES menus of those two masks?But it doesnt work..

Although this is working when I want to combine 2 SELECTIONS into 1..

I hope someone can help me with this.

- Juha

[Juha_Kinnunen]

ok I solved it.

That ADD had to be selected in GLOBAL APPLY MODE not in MODES.But if someone could clear me those ADD,REPLACE,SUBTRACT..options(under MODES).and when to use those..

:bagonhead

Juha

[dreggsy]

As i understand it
Always have your masks global apply mode set to add.
as they will all be joined together when drawn.
And only use the modes button when you need to remove a mask or part of the mask
using subtract, intersect etc.
the is good for when you are rotoing out people eg 1 mask for the leftforearm, i amsk for the right forearm,etc

hope this makes some sense.

[Juha_Kinnunen]

Thanks dreggsy,

I think I know now when to use global apply mode and when modes.But now I just want to understand why we have those two different modes menu to choose from.

An other issue for me are those HSV(?) operators-but I try to figure those out :)

Juha

[dreggsy]

Yeah i have to agree
Im not exactly sure on when and why the HSV operators work.
It would be good to see how thay are all used and for what reason.
there isnt to much info in the manual.
do you know what an XOR mode is? i surely dont know
from the manual
"XOR
Applies a bit-wise logical XOR operation between the value of the Operand slider and the channel"
WTF???

[Juha_Kinnunen]

hi dreggsy,

"XOR function can be described verbally as, "Either A or B, but not both" :cyclops:

I just founded this site when I typed XOR,digital to google.

http://www.play-hookey.com/digital/xor_function.html

Anyway , I am too tired to solve this now.. :cyclops: :cyclops:

To be honest,that whole channel operator menu is far beyond my understunding right now.

Juha ...zzzzzZZZZZZZZzzzzzzzZZZZZZZZZZZZzzzzzzZZZzzzzzz ....

[Freak]

ADD is by the default the selected mode in masks unless you changed to something else without any mask selected.

ADD: When different masks in the same operator overlap they act like one, even tho they are different objects.

REPLACE: Basically it replaces all the other masks below it

SUBTRACT: When different masks overlap the one set to subtract mode will subtract the the other masks below it based on it's shape.

INTERSECT: Acts like a container, it will hold inside it's shape all the masks below it.

If you're talking about the HSV operators from Channels operators you use them when you need to work with the Hue Saturation Value channels of a image insted of the RGB channels, good for fixing luminance channels in DV, applying effects to individual channels and stuff like that.

Everything on the channels menu is ment to be used when you need to work with individual channels in a image or play with its channels, they have loads of use, even tho I wish they were more visual in C* so you could really analyze (see) what's really happening there and the connections in the schematic view could also be more visible and easy to manage.

For what I've know of the XOR transfer mode, it's a bit logic transfer mode, when the bits are different between the two images the result is on (1), when they are equal the result is off (0), so they don't take color value as part of the math but image bit values insted.

I hope it helps in some way.


Cheers!

[Freak]

Just to bitch a bit :D

C* misses a color space op with RGB, CMY, HLS, YUV switches.
I hope they implement something near to that in future releases.

Now I'm gone ;)

[Juha_Kinnunen]

Thanks Freak for clearing these things!

Juha