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Java 3D Introduction
http://www.hta-bi.bfh.ch/~rfs/pwf/java3/
Stefan RuferAssistant Computer Science Departement
rfs@hta-bi.bfh.ch
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Todays Contents Start Introduction to Computer Graphics Java 3D Tutorial Chapters – Layout:
Technical Introduction Application in Java 3D Example Programs
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Start Foreword Installing Java 3D Running Java 3D Programs Warm-up Course overview References & Sources
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
StartObjectives Appetizer for the Course. Know how to compile and run Java
3D programs. Know where to search in case of
troubles or further interest.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
StartForeword Determine the correct color for
every pixel. This course is programming
oriented. Why to learn Java 3D?
It is object oriented. It is 3D. It is fun.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Start Installing Java 3D School PCs have Java 3D installed
Make sure that JDK 1.2.2 or later has been initialized (NAL -> Java -> Initialize ...).
The SUN environment does not include Java 3D per default
Check web-page for details and troubleshooting
# Add some directories to your PATH#original: PATH ${HOME}/bin:${PATH}:PATH /tools/java/JDK-1.2-AND-Java3D-1.1/bin:${HOME}/bin:${PATH}:
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Start Running Java 3D Programs Copy source from intranet
It is so simple – but IF... have a look on the web page for troubleshooting (all JARs at the right place, also in the JRE?).
>javac Program.java>java Program
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
StartWarm-up Simply let us try some examples...!
http://www.hta-bi.bfh.ch/~rfs/pwf/java3/Chapter Start, paragraph Warm-up.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Start Course Overview
Date Subject Remark23.10.00 Start / Introduction to Computer Graphics
30.10.00 Hello World! / The Virtual Universe Tutorial Chapter 1, 2
6.11.00 Transformations / SceneBuilder
13.11.00 Creating Geometry / Easier Content Creation
Tutorial Chapter 2, 3
20.11.00 Interaction Tutorial Chapter 4
27.11.00 Animation Tutorial Chapter 5
4.12.00 Lights Tutorial Chapter 6
11.12.00 Textures Tutorial Chapter 7
18.12.00 Spline, Ray-Tracing, Future
8.1.01 Project Work Kick-off Project work by one, two or three people. Proposals for projects will be accepted.
15.1.01 Project Work
22.1.01 Project Work
29.1.01 Project Work
5.2.01 Project Work
12.2.01 Project Work
19.2.01 Project Work
26.2.01 Presentations of the Project Works
5.3.01 Holiday
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Start References & Sources SUN and intranet web pages, links
found in documentation. Use the glossary, it makes live
easier if you know about what exactly you are talking.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Intro to Computer Graphics Why Java 3D 2D versus 3D Color Models Hardware Java 3D Tutorial
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsObjectives Understand some essential basics
of computer graphics like color models.
Get an idea of what hardware is involved if doing computer graphics.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsWhy Java 3D 3D-modelers like Art*lantis
Easy content creation Pre-programmed „static“ behaviour Many pre-defined shapes, extrusions, textures...
3D-languages like Java 3D or OpenGL High degree of user interaction Start on the „green field“ Create new 3D applications (CAD, Simulator, ...)
3D-renderers like PovRay No interaction, only one picture
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer Graphics2D versus 3D 2D
R2 => R2
Simply two dimensional picture on 2D-Screen.
3D R3 => R2
Match three dimensional mathematical model to two dimensional Screen.
A new approach are Holography techniques R3 => R3 but that‘s maybe beyond the scope of this course...
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsColor Models RGB is the most most important
color model for computer graphics. Additive system Red, Green, Blue, 8bit each Java 3D: each color has values 0..1 Application example: ColorSpace
Other systems: CMYK, HSB...
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsHardware (1) Graphic Cards minimize processor load by
executing graphic commands in hardware. DirectX OpenGL
Raster Screen have an x-y pixel array (=raster) to display our graphics CRT LCD Counterpart: Vector graphic devices such as
analog cathode-ray oscilloscopes.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsHardware (2)
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Introduction to Computer GraphicsJava 3D Tutorial Tutorial by SUN Great (as usual, it is SUN...) Use this and the API as your
reference!
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual Universe Basics Scene Graph Locales Content Branch View Branch Understanding MyUniverse Recipe for a simple Program
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseObjectives Know what a virtual universe and a
scene graph is. Understand the basic parts and
elements of a scene graph. Know the basic recipe for a Java 3D
program.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseBasics A virtual universe can be seen as a 1:1
representation of our own universe. Represent structures from astronomical
to subatomic. Floating point 3D space: 2^256 (!!) for each
x,y,z. Decimal point for 1 meter at 2^128 ->
incredible precision at incredible extend. There is one VU-instance only (Singleton).
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseScene Graph (1) Scene Graph is the
graphical representation of the objects in our VU.
Directed Acyclic Graph (Tree) Nodes, arcs, parents,
childs, leaves, references and other objects.
VirtualUniverse
Locale
Group
Leaf
NodeComponent Other objects
Reference
Link
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseScene Graph (2) A Java 3D program may have more
objects than those in the scene graph.
A scene graph drawing is the correct documentation for the 3D part of a Java 3D program.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseScene Graph (3) Basic parts of a
scene graph
myVirtualUniverse
myLocale
BranchGroup
BranchGroup
a3Dobject myViewPlatform
ViewBranch
Content Branch
Locale(s)
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseLocales (1) How to handle the huge extend of
a virtual universe efficiently? Our virtual universe contains at
least one Locale. The locale is a 3D-reference point
inside the virtual universe.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseLocales (2) Standard Locale resides at (0,0,0) in the
VU. We can have several Locales, eg:
One as reference point of the swiss coordinate system (located in Bordeaux, France).
A second as the architects reference point of a building plan.
The both are related, but depending on the point of view it is more convenient (and precise) to work with one or the other.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseContent Branch (1) Contains all „visible“ objects of our
scene. Contains all transformations for
those objects (displacement, animation, ...).
We distinguish between group nodes and leaf nodes (see following slide).
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseContent Branch (2) The most
common object types
BranchGroup
Shape3DAppearance
TransformGroup
...
...
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseView Branch
The Canvas3D will be inserted in our application or applet -> most important!
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseRecipe for a simple Program
1. Create a Frame & a Canvas3D object.
2. Create a SimpleUniverse object which gets a reference to the Canvas3D.
3. Construct the content branch.4. Insert the content branch into
the Locale of the SimpleUniverse.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
The Virtual UniverseExercises Check Web-Page, chapter
„Virtual Universe“
http://www.hta-bi.bfh.ch/~rfs/pwf/java3/
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello World The Java 3D API Finally: Hello World! Source Code Class Diagram of HelloJava3D What happens when running? Exercises
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldObjectives Understand the high-level
structure of the APIs involved in a Java 3D program.
Understand the code of the HelloJava3Da example line by line.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldThe Java 3D API Packages related to the Java 3D
API: Core classes: javax.media.j3d Utility classes: com.sun.j3d.utils Math classes: javax.vecmath AWT classes: javax.swing
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldFinally: Hello World! Probably the most
simple Scene Graph
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldSource Codepublic class HelloJava3Da extends Applet { public HelloJava3Da() { setLayout(new BorderLayout()); Canvas3D canvas3D = new Canvas3D(null); add("Center", canvas3D);
SimpleUniverse simpleU = new SimpleUniverse(canvas3D); simpleU.getViewingPlatform().setNominalViewingTransform();
BranchGroup scene = createSceneGraph(); simpleU.addBranchGraph(scene); }
public BranchGroup createSceneGraph() { BranchGroup objRoot = new BranchGroup(); objRoot.addChild(new ColorCube(0.4));
return objRoot; }
public static void main(String[] args) { Frame frame = new MainFrame(new HelloJava3Da(), 256, 256); }}
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldClass Diagram of HelloJava3D
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldWhat happens when running?while (true) {
Process input
Perform Behaviours //none at the moment
Traverse scene graph and render visual objects
if (request to exit) break
}
Cleanup and exit
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Hello WorldExercises Check Web-Page, chapter „Hello
World“
http://www.hta-bi.bfh.ch/~rfs/pwf/java3/
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating Content Geometic Utility Classes Mathematical Classes Geometry Classes GeometryArray Classes GeometryStrip Array Classes Indexed Geometry Appearance and Attributes Point- + LineAttributes PolygonAttributes
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentObjectives Get an overview on how to handle
polygones in Java 3D. Know the most important
attributes that determine the look of a polygone.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentGeometric Utility Classes
Box (2x2x2 m)
Cone (Ø2m, height 2m)
Cylinder (Ø2m, height 2m)
Sphere (Ø2m)
Default color white
Tutorial Page 2-6
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentMathematical Classes (1) Tuples are simply pairs or triples of
numbers. For each vertex there can be up to
four javax.vecmath objects: Points for coordinates Colors Vectors for normals TexCoords for texture coordinates
Tutorial Page 2-15
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentMathematical Classes (2) Vectors: mostly used for normals
and position information in 3D-space.
Normals: determined using the right hand (remember: we have a right-handed system).
P0
P1
P2n
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentGeometry Classes What to do if our shape is not a
box or a cylinder? Create Shape3D-object, use
setGeometry() method! For a triangle:
Three-element array One point per element
Tutorial Page 2-20
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentGeometryArray Classes Most primitive form to create
shapes:
Points or lines are one pixel wide per default.
Colors are interpolated from vertex to vertex if specified.(see code page 2-24, line 9+10)
Tutorial Page 2-21
2-26
P0 P1
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentGeometryStripArray Classes More convenient: share some
vertices:
Example Yoyo: Ever tried to model a Jumbo-Jet by hand? Often geometry is generated by mathematical calculations.
Tutorial Page 2-27
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentIndexed Geometry Best re-use of vertices but we lose
performance using the index array.
Tutorial Page 2-27
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentAppearance and Attributes Appearance class does not specify
the appearance directrly but contains many links to appearance objects:
Tutorial Page 2-34
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentPoint- + LineAttributes Points and Lines are 1 pixel wide
by default. Zooming does not affect this.
Let‘s try to change: Thikness of the line Antialiasing
Tutorial Page 2-37
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Creating ContentPolygonAttributes We can set the PolygonMode:
Fill: fill the interior of the polygones Line: connect vertices with lines
(„Drahtigttermodell“) Point: draw only points at the vertices
Face culling: Hide front, back or none of the faces of a polygon.
Tutorial Page 2-38
2-42
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content Creation Class Loaders Handle a bunch of objects Text in 2D and 3D Background Bounding Leaf
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationObjectives Be able to load and display non-
Java 3D objects in a scene. Understand background and
bounding leaf and why one of the two is not enough.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationClass Loaders Load 3D scene files and create Java 3D
representations (branch graph). Read and parse file Create Java 3D objects Return branch group object with all the scene
contents Insert branch group in the scene
-> J3D API Demos: ..\ObjLoad\java ObjLoad ..\geometry\
galleon.obj
Tutorial Page 3-2
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationHandle a bunch of points First create a GeometryInfo object. Now many operations can be
performed on this object (and on our data): Generate Normals „Stripifying“ „Compacting“
Example: GeometryInfoApp.java
Tutorial Page 3-7
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationText in 2D and 3D Text2D creates a rectangular
polygone and a texture on it. Text3D creates geometry objects
for the text that have an extrusion.
Tutorial Page 3-13
3-16
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationBackground Background can be a solid color,
an image and/or a geometry. Background is infinitely far away,
you can not go or see what‘s behind.
Tutorial Page 3-22
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Easier Content CreationBounding Leaf Used for different classes: Light,
Fog, Behaviour or Background. Only an intersection with the
bounding leaf of such an object makes it visible.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Animation Interpolators Alpha Object Billboard Level of Detail (LOD) Morphing
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationObjectives Get an impression of the different
forms of animation. Be able to animate objects using
an Interpolator and Alpha object.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationInterpolators Change all important
3D-object data easily. Interpolators do not
change the corresponding value automatically -> Alpha object needed.
Tutorial Page 5-11
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationAlpha Object (1)
Tutorial Page 5-7
Alpha objects generate events distributed over time.
They are used as trigger events for the interpolators.
Some of the possible wave-forms f(t):
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationAlpha Object (2)
Tutorial Page 5-7
AlphaAtOneDuration
PhaseDelayDuration AlphaAtZeroDurationTriggerTime
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationPut it together
TransformGroup objRotate = new TransformGroup();objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Alpha alpha = new Alpha ();
RotationInterpolator rotInt = new RotationInterpolator (alpha, objRotate);rotInt.setSchedulingBounds(bounds);
objRotate
rotIntalpha
Trigger events
Change
Transform3D
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationBillboard Show complex (background)
geometry, e.g. trees. Troubles with different views. These objects are flat:
Tutorial Page 5-26
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationLevel of Detail (LOD) As closer you are as more details
you want to see -> LOD. Several childs of a Switch node,
choose the right one. Long developement time for
creating the objects with different detail levels.
Tutorial Page 5-30
5-31
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationMorphing „Interpolator for geometry“. You have to define the key frames. The Morph class will interpolate
between the key frames. -> Try the Java 3D example \jdk1.3\
demo\java3d\Morphing\Morphing.java
Tutorial Page 5-36
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
AnimationExercises Find description on the web page
(chapter animation):www.hta-bi.bfh.ch/~rfs/pwf/java3/
Tutorial Page 5-36
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Lights Java 3D Lighting Model Influence Different Light Types Mixing Lights Material Objects Other Coloring Possibilities Shadows
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsObjectives Understand the Java 3D lighting
system. Know about the different ways to
give a color to an object. Recall the theory about additive
light mixing.
Tutorial Page 6-2
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsJava 3D Lighting Model There are three different reflections:
Ambient (caused by ambient light) Diffuse („normal“ reflection) Specular (highlight reflections of
polished material) No inter-object reflections in Java 3D. Light sources are not visible itself.
Tutorial Page 6-2
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsInfluence There is no warning for leaving
light out of a scene. There is no warning for not setting
a light source its influencing bounds.
Some light types have a attenuation setting.
Tutorial Page 6-8 6-9
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsDifferent Light Types Ambient light
As if the sky was cloudy. Directional light
For the virtual „sun“. Point light
For virtual lamps. Spot light
Virtual spot lamps.
Tutorial Page 6-11 ff
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsMixing Light Why does an object appear in a
certain color? White sphere, red and blue light ->
result?
Tutorial Page 6-17
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsMaterial Object Color settings of the material
object represent „reflection coefficients“.
Shininess is an interesting value.
Tutorial Page 6-21
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsOther Coloring Possibilities No lights needed, but no „shiny“
effects: ColoringAttributes Per-vertex color (KickCan example:
class Floor).
Tutorial Page 6-23
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
LightsShadows There are no built-in shadows in
Java 3D. Shadows in the tutorial are created
using hand-made classes and polygones.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Textures Basic Principles Create a Simple Texture
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
TexturesObjectives Know what a texture is and why
we need it. Be able to program simple
textures.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
TexturesBasic Principles Detailed surface structures are
hard and expensive to build in 3D -> Texture!
„Texel“ is „texture element“ -> one pixel of a texture.
Texture mapping: Fit image to a given geometry.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
TexturesCreate a Simple Texture Load an image
Create a texture
Create 3D-object with appearance
String filename = "earth.jpg"; TextureLoader loader = new TextureLoader(filename, this);ImageComponent2D image = loader.getImage();
Texture2D texture = new Texture2D(Texture.BASE_LEVEL, Texture.RGBA, image.getWidth(), image.getHeight());texture.setImage(0, image);
Appearance appear = new Appearance(); appear.setTexture(texture);
Sphere earth = new Sphere(1.0f, Primitive.GENERATE_TEXTURE_COORDS, appear));
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project Information Gathering Set-up Deliverables
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
ProjectObjectives Apply all what you have learned. Learn more of the Java 3D API and
3D computer graphics. Know what you want to do ->
concept, system design, ...
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
ProjectInformation Gathering Search the web, get ideas. Do a brain storming or something
similar -> write down your ideas. Form project groups. Discuss your ideas so that you get
ready to start with a concept.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
ProjectSet-up Participants of the project. Discussed your idea with the
teacher.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
ProjectDeliverables The deliverables are: source and
documentation of the project. Documentation as HTML page or
paper. Turn in source and documentation:
ZIP file by mail (or link for download if size > 1MB)
or CD-ROM
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More... Spline Functions 3D-modelling Professional Rendering POVRay Example
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More…Objectives Get a little outlook on what
happens outside of Java 3D. Have an idea of professional tools
used in computer graphics. Hands-on experience with POVRay.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More…Spline Functions Base: Spline Functions Applications of Spline Functions in:
Spline Curves, Spline Surfaces Advantages: Smooth surfaces (!) Application in Java 3D:
com.sun.j3d.utils.behaviors.interpolators.TCBSplineInterpolator
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More…3D-modelling LightWave (www.newtek.com) ZOOM
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More…Professional Rendering Rendering for films like Toy Story or
Titanic is done with rendering products. Performance is far from real time but
the experience pretty close to real world.
Examples of Products: PRMan (www.pixar.com) BMRT (www.bmrt.org) POVRay (www.povray.org)
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
A Bit More…POVRay Example Download POVRay from
ftp.hta-bi.bfh.ch (Windows Version) Install locally Create a ready-made scene Play around
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
ProjectWhat to do? A Paper describing a 3D computer
graphics related aspect. A Java 3D program (little demo,
game, a start for a bigger project…). A demo with an other 3D software
(PRMan, BRMT, PovRay). A picture of a 3D-contest (e.g.
PovRay).
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project Presentations Deliverables Presentations!
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project PresentationsDeliverables Turn in source and documentation:
ZIP file by mail (or link for download)or CD-ROM
Due Date: 2nd March 2001rfs@hta-bi.bfh.ch
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project PresentationsPresentations!
1 Daniel Glauser 3D-Bomberman
2 Ramon Keller 3D-Schach
3 Nicolas Leuba Fisch-Aquarium
4 Roger MathysPascal Moser
Murmelbahn
5 Philippe SchnyderPhilippe SchochMarkus Trachsel
3D-Würfel
6 Stefan Rufer RenderMan / BMRT
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project RenderMan / BMRT What is RenderMan? What is BMRT? What is Radiosity?
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project RenderMan / BMRTWhat is RenderMan? Open interface by Pixar. Interface for 3D-model rendering. Provides extension possibilities for
custom shading and gadgets. This is NOT an implementation.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project RenderMan / BMRTWhat is BMRT? BMRT is a free 3D-renderer by
BlueMountain Corp. BMRT is partly RenderMan compatible. Contains various tools. Most important:
rgl: Simple, fast renderer for previews. rendrib: High-end renderer providing ray-
tracing, radiosity, programmable shading…
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project RenderMan / BMRTWhat is Radiosity? Imagine: Blue room with white chair
chair appears a bit blue! Compute diffuse, inter-object
reflections RayTracing uses AmbientLight to
simulate this not too good. Radiosity approximates diffuse,
inter-object reflections.
Stefan Rufer, HTA Biel, 2000 Java 3D – an Introduction
Project RenderMan / BMRTRadiosity examples
rendribquality
rglpreview
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