• Название:

    Getting Started KT 2008 1 01


  • Размер: 3.64 Мб
  • Формат: PDF
  • или
  • Сообщить о нарушении / Abuse

Установите безопасный браузер



  • Название: Kerkythea 2007 Rendering System FAQ
  • Автор: admin

Предпросмотр документа

GETTING STARTED

PHOTO REALISTIC RENDERS
OF YOUR 3D MODELS

Available for

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 1 of 41

GETTING STARTED

Preface:
Kerkythea is a standalone render engine, using physically accurate materials and lights, aiming for
the best quality rendering in the most efficient timeframe. The target of Kerkythea is to simplify the
task of quality rendering by providing the necessary tools to automate scene setup, such as
staging using the GL real-time viewer, material editor, general/render settings, editors, etc., under
a common interface.
Reaching now the 4th year of development and gaining popularity, I want to believe that KT can
now be considered among the top freeware/open source render engines and can be used for both
academic and commercial purposes. In the beginning of 2008, we have a strong and rapidly
growing community and a website that is more "alive" than ever!
KT2008 Echo is very powerful release with a lot of improvements.
Kerkythea has grown constantly over the last year, growing into a standard rendering application
among architectural studios and extensively used within educational institutes. Of course there are
a lot of things that can be added and improved.
But we are really proud of reaching a high quality and stable application that is more than usable
for commercial purposes with an amazing zero cost!
Ioannis Pantazopoulos
January 2008
Like the heading is saying, this is a Getting Started “step-by-step guide” and it’s designed to get
you started using Kerkythea 2008 Echo.
Of course it can be an advantage, but fact is that it’s not necessary that you have any experience
with rendering software prior to getting aboard KT. Many beginners find that they adapt very
quickly.
This guide will cover what we interpret as being the basics, which is essential to get you started.
For more advanced settings, we advise you to visit our web-site at http://www.kerkythea.net and
look through some of the other tutorials available.
Some of the tutorials are videos and others are pdf-documents.
Likewise, we also advise you to visit the KT Forum, where you can find many resources and useful
tips and tricks posted by fellow KT users.
In our Wiki you can also find answers to many of the questions you might have.

IMPORTANT NOTICE!
If this is the first time you’re rendering a model, we recommend that you start with a fairly simple
model. As the saying goes – You need to learn how to crawl before you can walk.

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 2 of 41

GETTING STARTED
Table of Content:
Topic:

Page:

1.

IMPORTANT NOTES – SIZE MATTERS: .................................................................. 4

2.

MAKE SURE YOU HAVE WHAT IT TAKES: ............................................................. 5

3.

INSTALLING KT MATERIAL AND GLOBAL LIBRARIES: ....................................... 6

4.

A QUICK OVERVIEW OF THE GUI (GRAPHICAL USER INTERFACE): .......................... 7

5.

THE ICON-BAR:......................................................................................................... 8

6.

OPENING YOUR SCENE/MODEL:............................................................................ 9

7.

THE MERGE FUNCTION: ........................................................................................ 10

8.

FINDING MATERIALS IN YOUR MODEL/SCENE: ................................................. 11

9.

APPLY/AMEND MATERIALS:................................................................................. 12

9.

APPLY/AMEND MATERIALS: (CONTINUED) ............................................................ 13

9.

APPLY/AMEND MATERIALS: (CONTINUED) ............................................................ 14

10.

WORKING WITH MATERIALS: (CHANGE THE COLOR) ...................................... 15

10.

WORKING WITH MATERIALS: (USE BITMAP)...................................................... 16

10.

WORKING WITH MATERIALS: (SCALE BITMAP) ................................................. 17

10.

WORKING WITH MATERIALS: (TRANSPARENT MATERIAL) ............................. 18

10.

WORKING WITH MATERIALS: (CREATING A MIRROR MATERIAL) ................... 19

10.

WORKING WITH MATERIALS: (SELF LUMINANCE/FAKED LUMINANCE)......... 20

10.

WORKING WITH MATERIALS: (SELF LUMINANCE- CONTINUED)......................... 21

11.

UV MAPPING: .......................................................................................................... 22

12.

THE GIZMO:............................................................................................................. 23

13.

SOME WORDS ABOUT LIGHT SETTINGS: ........................................................... 24

14.

POINT AND SPOTLIGHT SETTINGS:..................................................................... 25

15.

SUN & SKY WIZARD: .............................................................................................. 26

16.

APPLYING A GLOBAL STUDIO: ............................................................................ 27

17.

HOW TO APPLY SPHERICAL SKY IMAGES: ........................................................ 28

18.

INSERTING A MODEL FROM A KT MODEL LIBRARY:......................................... 29

19.

USING THE INSTANCING BRUSH: ........................................................................ 30

20.

START RENDER:..................................................................................................... 31

21.

SHIFTING BETWEEN CAMERA POSITIONS: ........................................................ 32

22.

CHOSE THE RENDER PRESET:............................................................................. 33

23.

RENDER METHODS:............................................................................................... 34

24.

KERKYTHEA GLOSSARY: ..................................................................................... 35

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 3 of 41

GETTING STARTED
1.

IMPORTANT NOTES – SIZE MATTERS:

Kerkythea is a wonderful physically accurate Global Illumination render engine (which in addition
allows the user to use simple ray trace method for non photo-realistic rendering) but to use it right
and get the most out of it without too much frustration, you need to follow physical laws and "real
world" parameters!!
One of the most important parameters is to ensure that your scene/model has the correct scale.

1 KT square = 1 square meter

If your scene/model is off scale, it will have a huge impact on the final rendered image.
(with a scan line render engine it is not important but as soon as Global Illumination and physics
are calculated, the scale of the scene becomes important.)
For example: If you want to illuminate your scene with a light source, the result will differ a lot if the
light sources have a distance of 1 km vs. a distance of 5 meters.
(the power of the light is different and light bouncing, indirect light is also different.)
It is a matter of avoiding artifacts and poor renderings, which lead to frustration.
Physics is integral to how the render engine works.
The first "mistake" is to think that every render engine works more or less the same.
A little bit of reflection, a bit of diffuse, maybe some refraction and specular and tada the material
has been created.
The above is true for simple ray tracer- or scanline- render applications, but not for Global
Illumination render-methods like Phonton Mapping with Final Gathering (PM+FG) or unbiased
render methods like Metropolis Light Transport (MLT), Bidirectional Path Tracing (BiPT), etc.
Why? Because a simple ray tracer only renders "direct light".

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 4 of 41

GETTING STARTED
2.

MAKE SURE YOU HAVE WHAT IT TAKES:

First of all please ensure that you have the latest version of Kerkythea installed.
To check this in Kerkythea (KT)
Click the Help > About Kerkythea... in the top right corner.
In addition…
Download and install as many of the material libraries available
(At the time of writing this tutorial, there are 26 mat. libraries available in the KT repository)
You can also find some nice material packs in the Material section of the KT Forum.
After download you can install the material libraries in KT. (see item 2 on next page)
We also recommend that you download some Globals.
Globals are spherical images of skies which may include a sun setting, which you easily can apply
to your scene.
To install the Global libraries, you use the same procedure as used for material libraries.
Finally you can download some of the Model libraries we've made available.
Currently there are 5 libraries available containing some Xfrog trees, a Grass model library, some
3D Flowers, Cars and finally a model library containing Fritz Hansen Chairs...
IMPORTANT NOTICE!
Please note that some of the model libraries made available needs to be unzipped unzip the files
to where your KT Models sub-folder is located.
(I.e. X:\Program Files\Kerkythea Rendering System\Models)

In this tutorial we will use a scene, which you can download from here.
The file-name is Getting-Started-Scene-XML.zip
It’s not required that you use this scene, but if this is one of the first times you are using a render
application it might be easier for you to follow this tutorial and learn the basics of rendering.
This scene/model has also been used in the Beginners Starting Guide thread at the KT Forum, and
you might find some useful information in that thread, where users have been asking question
along with the guidance.
A short note on the KT files.
You might have noticed that some models have the extension "XML" and others "KZX".
The XML file is a standard XML file native to Kerkythea and the "KZX" is a zipped version of the
XML-file (Kerkythea Zipped XML), enabling you to save space on your hard drive.
If you have a huge XML-scene, you can compress it by using your favorite zipping application and
then rename the file-extension .ZIP to .KZX.
KT2008 Echo is able to open both formats.

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 5 of 41

GETTING STARTED
3.

INSTALLING KT MATERIAL AND GLOBAL LIBRARIES:

To install the KT Material and Global libraries click
1.)
File > Install Library...
2.)

3.)

Select the folder where you have downloaded the .mat.zip
files to and select all by holding down the Shift key on your
keyboard just as you would if you want to select multiple
files anywhere else.

Hit the OK button.

Please note that it will take some time for all the material libraries to install, but a window will popup informing when the libraries have been installed successfully.

An alternative method …
1.)

From the menu Click Settings > Materials…

2.)

In the right panel of the Material Workshop below “Current Library” click the Open button.

3.)

Click the Import button

4.)

Select the Material libraries you want to install and click OK.

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 6 of 41

GETTING STARTED
4.

A QUICK OVERVIEW OF THE GUI (Graphical User Interface):

At the top you have the menu-bar and below that you have the icon-bar.
Below the menu-bar you find the icon-bar with easy access to the most common tasks.
To the left you have the Scene Tree View
The center window shows the scene/model.
Quick view of your rendered image (shows only while rendering).
Material Browser

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 7 of 41

GETTING STARTED
5.

THE ICON-BAR:

Open Save image

Redo Material Rotate/Orbit
Roll (R)
(Ctrl-Y) Editor (M)
(Q)

Save Scene Undo

Hide(H)

Select

Pan(P)

(Ctrl-Z)

Reset Perspective/
Back (5)
View(E) Parallel Bottom(4) North

Dolly/Move Camera/
Camera(W) Cycle (C)

Top (1) Front (2)
South

Right (6)
East

Left (3)
West

Start
Render

View
Image

Stop/
Abort

Pause
Render

If you place the arrow on one of the icons a small text box will appear helping you to identify the
purpose of the icon.
Icon Description

Used to…

Open

Open your scene/model file.

Save Scene

Save your scene and settings (applied materials, lights etc.)

Save Image

Save the image you have rendered.

Undo

Undo command

Redo

Redo command

Hide

Hide a selected material, group or light.

Material

Enter the Material Editor of a selected material

Select

Select tool

Rotate/Orbit

Rotate/Orbit the scene/model. (Drag Center Mouse Button)

Pan

Pan the scene/model. (Drag Right Mouse Button)

Roll

Roll the scene/model.

Dolly

Zoom the scene/model.

Reset

Reset the view of the model to origin.

Camera/Cycle

To switch between the cameras you’ve applied in your scene.

Perspective/Parallel To switch between Perspective (3D) and Parallel (2D) view.
Top

View scene/model from top.

Bottom

View scene/model from bottom.

Front (South)

View scene/model from front side.

Back (North)

View scene/model from back side.

Left (West)

View scene/model from Left side.

Right (East)

View scene/model from right side.

View Image

Open the rendered image window.

Start Render

Start the render process.

Pause Render

Pause a render in progress.

Stop Render

Stop/Abort a render in progress

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 8 of 41

GETTING STARTED

6.

OPENING YOUR SCENE/MODEL:

Open KT 2008 and open the scene/model you want to render.
KT2008 supports the following 3D File Formats:
3DS, OBJ, XML (Native KT format) and KZX (Zipped KT XML format)
1.)

From the menu click File > Open or press Ctrl + O on your keyboard

2.)

Select the file containing your scene/model and click the OK button.
Wait until the scene/file has been completely opened.

You can switch between “wire frame” or “Solid” view, by hitting the “V” on your keyboard.

Or by selecting View > Adjust > “Wireframe Rendering” or “Solid Rendering”
In addition to the standard Wire-frame, you can also select a colored wire-frame.

Ver. 1.01

© Kerkythea 2008 Echo
GETTING STARTED
Written by: The KT Team

Date: April 24th, 2008
Page 9 of 41

GETTING STARTED
7.

THE MERGE FUNCTION:

With KT you can add a model or update your existing scene/model.
To add a new model to your scene you simply…
1.)

Click File > Merge from the menu-bar.
A new Open Settings window will open and enable you
to set-up the merge function of exactly what you
want to merge into your scene.

The merge options shown above should be fairly self-explanatory.
Models:

Merge – Add New To Current

(Used if the model you want to merge with the current open scene contains an entirely new model you want to add)
(Merge > Replace Mesh would keep your current KT material settings, and update only the geometry of that material.)

Lights:

Merge - Add New To Current

(Used if your new model contains light sources like Omni-, Spot- or Self luminance –lights which you want to add to the scene.)

Cameras:

Keep Current - Throw Away New.

(Used if the model you want to merge with the current open scene contains new camera positions, but you prefer to not import them.)

Global Settings:

Keep Current - Throw Away New

(Used if the model you want to merge with the current open scene contains a special Global setting you do not want to use, this will
retain your current scene’s sun/global settings)

Render Settings:

Keep Current - Throw Away New

(Used if the scene/model you want to merge with the current open scene contains special render settings which you would rather not
import)

The best advice we can give you will be for you to play with the merge option creating simple
merging scenarios to see “what if”.
Once you've set the settings, you can click the OK button.
A Merge Scene window will open enabling you to select the file you want to merge with the
scene/model already open.
Once you have selected your file, click the OK button.
The new scene will be merged with your existing scene and now you can apply and/or adjust the
materials of the new components.
Ver. 1.01