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3d Assets E-mail
Written by Andrew Silke
Wednesday, 12 November 2008 10:33

Here's a quick list of 3d assets that have been created, since I use Maya 2008 most of the files are in that format. David Hickson has made some good stuff for Blender too. There's some making of videos here .

OBJ
Arrow
A simple 3d arrow in OBJ format.

Manipulator.obj and Manipulator.mtl
Polygon versions of Move, Rotate and Scale Manipulators in OBJ format.

Camera Model
A Polygon Camera in OBJ format

MAYA (2008) files
Camera, Lights and Shader setup
This is the camera and light and shader setup I use, it's very simple.  Feel free to play around with the shaders if you don't like them.  If you like you can add the background.tif to the camera, it's found in the Fundamental Style Guide .zip Pack.  I usually comp in After Effects so I add the BG there.

Camera Only
The Maya Camera that I use, has resolution gate on, 50 lens and gimbal working properly

Maya Lights Only
A feww directional lights I use to light the scene, very simple

Arrow
A simple arrow in MB format

Manipulators
Move Rotate and Scale manipulators in MB format.  The Scale has a little rig attached too.

Camera Model
A Polygon Camera in MB format

BLENDER

Blender Scene Setup
David Hickson has created this great blender file which has a basic grid, lights and shaders ready to go.

MAYA SCENE FILES OF MOVIES I'VE MADE
Here are the scene files of some of the videos I've made, should be pretty informative on how they are done.  Usually they take 1 - 2 weeks to create.

The Polygon 10 MB (Maya .mb)

Primitives (Thorny Devil getting Built) 2.2 MB (Maya .mb)

Vertex Normals 3.5 MB (Maya .mb)

Objects 5.9 MB (Maya .mb)

Hierachies Coords (this is a WIP) 1.1 MB (Maya .mb)

3DS MAX Scene Files

Greg Petchkovsky's Max Scene file for his Subdivision Surface Artifacts video

Fundamental Video Style Guide

Please email This e-mail address is being protected from spambots. You need JavaScript enabled to view it for the pack file which has all the zipped assets.

...

These resources are to be used for the GuerrillaCG fundamental tutorial videos. It’s best if the files are unzipped with the folders intact.

You'll also need the titles. They are lossless compressed .png quicktimes, so they are large.

The Guerrilla CG Project Intro - 43 MB
The Guerrilla CG Project Outro - 83 MB


Contents Of .zip

  1. Background images

  2. Music

  3. Sound Effects

  4. Title Cards

  5. This document (an old version, please refer to this page)

  6. Visual Style .jpg

  7. Font: (for opening and title cards only)


Overview

The following is the style guide for GuerrillaCG videos. Since we are hoping that many people will make videos it is essentially up to each creator to choose the style of their video. The only absolute mandatory elements are

  • The videos must open with the GuerrillaCG introduction titles and end with the GuerrillaCG end titles and music.

  • The Videos resolution must be at a resolution of 800 x 600, but legable at 400 x 300

  • 25 frames per second
  • The videos should be keep short under 5 mins roughly. They can be split into multiple videos if they exceed this limit. Eg. Basic Concepts and Advanced Concepts


All other elements are at the creators discretion, however if we keep to a similar style and format we’ll be able to maintain a cohesive style that won’t disorient our audience.

Recording voices

Glen Moyes has written a good reply in Zephyris's thread TOPIC: Technical: Good quality voice recordings , about how he records his voice, with some technical tips about equipment and the types of microphones that are available.


The videos follow these guidelines...

Video Style Guide

Specifications

  • Frame Rate: All videos are at a PAL frames rate of 25fps

  • Video Resolution is 800x600

  • Title Safe: Titles should be kept in “title safe” allowing them to be easily adapted for TV, you never know eh?

  • Frame Safe: All important action should be kept in “frame safe” allowing them to  be easily adapted for TV

  • Final Video to be submitted in a high quality video codec, yet to be determined.

  • All video elements including text should be legible at a resolution of 400 x 300, since the videos might be shown at this resolution on phones etc.

  • Fonts: Arial for text on video (see below).  Vectora 95 Black is what we use for the logo and title cards.

Structure of the Videos

  • Keep the video to a single topic, it's really easy to try and cover too much!
  • Introduction: a quick introduction lets the user to know what they’re about to watch. I usually re-use footage and do this last, it’s important to have an intro.

  • Title cards: Important topic changes are divided with a title card with the music “Music_TitleCard.wav”. This gives the audience a time to reflect. Most of the audience will be beginners and it gives them the space to think things over.

  • Demonstrate Simple then Complicated. I try to show the concepts in their simplest form then demonstrate how they apply in a more complex example. I’ve found that real life examples are especially helpful if they can be shown.


Keeping it Snappy

  • Time: To respect the audience’s time videos I try to keep the videos straight to the point. No banter or spoken introductions about the presenter.

  • 5 frame fast swipes are good for animation
  • Show not Tell: A picture (or movie) is worth a thousand words. And is quicker for the audience to understand too

  • Few Words: it’s best to use as few words as possible to describe a point.

  • Don’t go too fast! The audience will need pauses to reflect on what has just been taught. (I fell into this trap).  It's easy to miss before the sound effects are in.  Show important actions in a pause between dialog and use the sound effects to fill in the silence. Show it to your family and see if they can understand it. Ask them which parts they didn’t understand.


Voice Over and Dialog

  • Respect the audience at all times

  • The voice over should be scripted to avoid sloppy speaking

  • Don’t tell the audience what to do, and keep dialog as “we”. Use language like “we” instead of “you should” or “I”.
    For example "We can make it easier by cutting here" not "It’s easier if you cut here."
    or
    "Here we've made a sphere" not "Here I've made a sphere"

  • Use simple straight language as these videos are for beginners. I try to think of it as though I were explaining this stuff to my grandmother. How would I talk to her, what language would I use?

  • Avoid tech jargon wherever possible, and terms that are too software specific, (not always possible I know, but try to do your best)

  • I’m no voice over artist, and this is probably the hardest part for most of us. Don’t be embarrassed by your voice! It’s ok however it sounds! I have to keep telling myself this. Here are some tips I’ve received,

+ Keep variation in my voice, not dull monotone

+ Mix it up say things fast then slow

+ Keep the dialog friendly, think like I’m speaking to a good friend, really pretend like they are beside me

+ Keep the dialog non condescending, it’s not a lecture, the audience is smart (this one is hard for me)

+ Use emotion wherever possible and be passionate/lively

+ Speak clearly not too fast or too slow

+ Don’t fake it (sometime this happens when I think of the above points too much!)

Sound

  • Sound effects bring a real tactile and interesting nature to the videos. Sound effects are included in the “soundEffects” directory.

  • The music, or the “GuerrillaCG drum theme” for the opening, ending and title cards are in the “music” folder in .wav format.  Too many title cards with drums seem to annoy people, try to keep to 2 title cards.

  • You are welcome to use other music in the body of your video but be sure to make sure you have copyright permission to do so.


Visuals and colours

  • See the visualStyleGuide.jpg for some examples on the visual style.

  • Use the gradient background wherever possible (BackGroundCombined.tif) in the “background folder. Even if recording in real-time, see if it’s possible to bring the image into the background of your application, looks better than a grey background.  (The Smooth Shading Examples video will be good to redo one day to get rid of the grey).

  • Depending on your program some things, such as the wire frame may look different, this is no problem.

  • I use less edits and prefer more continuous camera moves. I try to keep the moves snappy and interesting to keep the movies interesting. Eg Objects swish in over 5 frames, most of the transitions used have been 5 or 10 frame lengths.


And that’s about it, any questions? Let me know in the forums.

-Silke

Sub Division Topology
Work in Progress by Greg Petchkovsky using 3ds Max

Sub Division Surfaces
Work in Progress by Glen Moyes using Blender

Euler and Gimbal Rotations
By Andrew Silke using Maya

Notes:
This is an old video, about one of the most misunderstood fundamentals of animation. I made this before I decided to focus on Poly Modelling. I've decided to finish it for the next video.  I'll probably split it up into 3 sections as it is too long.

1. Overview of Rotations (Quaternion, Local, World, Gimbal or Euler)
2. What is Euler (Gimbal) rotations
3. Examples of working around Gimbal

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