Tuesday, June 24, 2008

weekly.....monthly research...

a glance at nuke...

i had a bit of a play with Nuke this morning...so i though why not have another
look at it...
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from wikipedia:

Nuke (the name deriving from 'new compositor')[1] was originally developed by Bill Spitzak of Digital Domain for in-house use beginning in 1993. Nuke used the FLTK toolkit, which was developed in-house at Digital Domain and was subsequently released under the GNU LGPL in 1998.

In 2007, The Foundry, a London-based plug-in development house, took over development and marketing of Nuke from D2.[7] The Foundry released Nuke 4.7 in June 2007,[8] and Nuke 5 was released in early 2008, which replaced the interface with Qt and added Python scripting, and support for a stereoscopic workflow. Nuke supports use of The Foundry plug-ins via its support for the OpenFX standard.

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some notes:

just like fusion, you can hit 1 to get a viewer to pop up to display the node your focussed on.....which means you can select any node and then hit one to pop up a
preview of your tree at that position.

I noticed the menu has an open recent option....with the hot keys Alt - Shift -1, 2,3 etc...

Alt-G go directly to a frame...cool !
Alt-I script info..

Search / - just like houdini and linux !
CTRL-D disconnect or remove input

Zoom:
CTRL and a number to zoom in
ALT- and a number to zoom out.
F for fit and + and - to zoom in and out.

ALT-MMB for interactive zoom
ALT-LMB for Pan

` toggle the viewer
SHIFT ~ curve editor
S settings - you can specify a proxy here as well as general project settings
Shift - S preferences...

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ok from here i decided to investigate based on common tools:
a more structured approach...

splines / curves

add a bezier node under the draw submenu of 'modifiers' or tools
or just press P
CTRL-ALT-click to draw....

it seems by default the spline is closed.
some thoughts / questions and answers about splines from working in Fusion , After FX and Shake:
P (shift-p) allows me to draw a path

can i easily hide them ? -
O for Overlay toggles all the viewer type overlaid controls

can i animate the number of CV's ? and how is this interpolated ?
would I really want to do this ? i noticed shake was kinda klunkyu in this area -
you had to plan ahead with your keyframes.

can i easily control a feathered falloff or soft edge of the spline ?
using control gives me a soft edge for the bezier - indicated by a dotted line
the dotted line seems to actually indicate the beginning of the fall-off - not the end.
The solid line indicates the end of the fall off - where the spline is not having any effect - the outer most extreme region of the spline.

in fact moving the dotted - inner line can actually move the outer line as well - as if they were linked. CTRL gives independent control.

like shake.

x or right clicking and choosing 'BREAK' on the point will break the bezier handles.

cusp (corner) and blur / unblur and smooth (relink bezier handles) is also avail from this RC menu.

the help button has quite a few tips:
there is a transform jack when a few points are selected
you can also select points by clicking on the line between the points

Can i easily animate the spline as a whole ?
(there appears to be a handle like in shake)

the actual function of splines and masking seems a bit different
you can have a bezier node function with no input - it can exist in it s own right
in order to get some results that were logical to me...
i had to :


to be continued....

ok so i had some difficulties getting used to the masking with Nuke.
finally i read some of the help files: :)

from the first tutorial script i see that adding a mask or bezier shape to an image
fills it with white by default - so by changing the colour to black and inverting the mask i was able to cut a section of the im age out and overlay it (over) on something else.
So if want to use a filtere to affect just a region of an image this is one way i could do it.
Im really after a more direct way - luch as in fusion where you apply the filter to an image (which applies it to the entire image) then you can plug a mask into an imput designed for accepting masks and the filster is constrained tot hat mask.
the same process is complete in three nodes rather than four..



Monday, June 16, 2008

mercedes glk website launched !

Mercedes Job makes it to SideFX's REEL !!!

www.mercedes-glk.com

looks amazing...but be warned - it takes a while to come down
hats off in a big way to the talent at Realise and Kanuka Studios !


Sunday, June 1, 2008

ICP, Isixpack, BIC (rangi sutton)

ICP - convert images to rat format for better memory usage in Houdini.

after typing in a shell (in a houdini environment)
i get:

icp copies one image file to another, optionally performing simple
operations.

icp [options]

some options

-u output uncompressed if supported
-v turn on verbose
-f flip vertically
-F flip horizontally
-R flop image 90 degrees couter clock wise
-r scale to w x h res.
-s scale to a percent of the original
-c crop area in UV coords
-C crop area in pixels
-P include planes at the specified indices
-L load with cineon LUT
-O save with cineon lut
-N do not convert cineon from 10 bit log

isixpack takes 6 images and makes a reflection map in rat format.

type for help

% isixpack -

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from the help - there is 3 ways to convert images.
1. through COPS
2. converting in MPLAY
3. isixpack - mentioned above

AH HA !

what i was really after was the bic command (written by rangi Sutton)

the bic command converts images between formats.

Usage: bic -i -o [-e] image_file_names

Takes each of the image files specified with image_file_names and converts them
to image files of the format specified with the output_format. The files
specified with image_file_names should be image files of the type specified
with the -i input_format.

Valid file formats are:

pic jpg jpeg tga gif gif89 rgb sgi yuv pict pix cin tx rat exr

Input files should have these suffixes. eg myrender.rgb
Requires a valid Sidefx Houdini License.

Written by Rangi Sutton on 20/3/97 for HM3d Graphics Systems



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