Goal4d

Goal4D: Java Real-time 3D Engine Ανδρέας Ανδρέου http:// andyhot . di . uoa . gr [email_address]

Features
Java 1.1 compatible
Full screen, windowed, applet mode
Υποστήριξη πολλών 3 d-format (md2, md3, dff, 3ds, obj, bsp, DM)
Υποστήριξη προοδευτικών πλεγμάτων ( VIPM )
Keyframe και skeletal based animation
Directional και point lights
Ambient, diffuse, specular lighting - Χρώμα 24 bit
Affine, perspective correct texturing
Wireframe, gouraud, environment mapping, light mapping
Εξειδικευμένη διαχείριση terrain, bsp, billboard, skybox
Bounding volumes
Post και pre processing effects
Υποσύστημα scripting
3D Studio Max Exporter

Screenshots

3D Basics
Scene
Objects
Vertices
Faces
Textures
Lights
Cameras

3D Engine
Διαχείριση πόρων ( objects, textures, faces, vertices )
Προσδιορισμός Ορατότητας ( ανά object και face)
Σκιές και άλλα εφέ
Πολλαπλοί τρόποι απεικόνισης ( texture, bump, normal mapping )
Importers/Exporters
Μετασχηματισμοί
Model To World
World To Camera
Camera To Perspective
Rasterization

Rasterization
Διαδικασία απεικόνισης πολυγώνου στην οθόνη με χρήση των vertices που το αποτελούν
Γίνεται interpolation των γνωρισμάτων των δεδομένων vertices ( βάθος, φωτισμός, texture, normals, e.t.c.)

Goal4D
Πρώτη έκδοση (2001)
1 πακέτο
7 κλάσεις
Τρέχουσα έκδοση
24 πακέτα !!!
199 κλάσεις !!!
10 διεπαφές
40665 γραμμές κώδικα (35387 SLOC)
2159 γραμμές javadoc

Packages 1/2

Packages 2/2

Sample Code
Surface surface = Surface.createSurface(320, 200, this);
Scene3D scene = new Scene3D(surface);
// create simple camera
Camera3D camera3D = new SimpleCamera(80, 45, 45);
scene.setCamera(camera3D);
// add light
Light3D lightOne = new Light3D(0.5, 0.5, 0.7071);
scene.addLight(lightOne);
// add material
Material3D mat = new Material3D();
mat.setTexture(img);
scene.addMaterial(mat);
// create a rasterizer for this scene
Rasterizer rast = new WireframeRenderer();
rast.setScreen(scene);
// add object with its own rasterizer Object3D obj = PolygonObjectFactory.createPyramid(); obj.initRelatives(); obj.setMaterial(mat); obj.setRenderer(rast); scene.addObject(obj); // init the scene scene.init(); // and for each iteration of your game, // render and draw the scene scene.render(); getGraphics().drawImage(surface.getImage(), 0, 0, null);

Sequence Diagram

Pre - Post Process 1/2
Υλοποίηση της διεπαφής Filter
void setScreen(Screen3D screen);
void process(Screen3D screen);
Χρήση στην μηχανή με:
scene.setPostProcessor(Filter postProcessor)
scene.setPreProcessor(Filter preProcessor)
28 έτοιμα φίλτρα:
PseudoColorFilter HighPassFilter LowPassFilter StereoFilter EdgeFilter SepiaFilter OilFilter RadialBlurFilter MotionBlurFilter

Pre - Post Process 2/2

Rasterizers
Υλοποίηση της διεπαφής Rasterizer
void setScreen(Screen3D screen);
void render(Rasterizable object);
Χρήση στην μηχανή με:
object3D.setRenderer(Rasterizer renderable)
2 9 έτοιμοι rasterizers
Άρχειο template σε Velocity ( http://jakarta.apache.org/velocity/ ) για την συγγραφή νέων

Scripting 1/2
Υλοποίηση της διεπαφής Scriptable
String showFolderContents (String extension, String folder);
Image getImage(String name);
InputStream getStream(String name) throws IOException;
MediaTracker getMediaTracker();
Δημιουργία αντικειμένου ScriptEngine
ScriptEngine(Scene3D sc, Scriptable parent)

Scripting 2/2
Εντολές:
help clear cls quit history for postprocess preprocess usebsp switch save camera rotate scale info gouraudmap nprmap dir test load animate render texture environ skydome cube pyramid tree
Παράδειγμα:
scriptEngine.parseString(“pyramid”); scriptEngine.parseString(“texture 0 world.jpg”);

Development Process
Build tools
IDE
CVS
Test
Code Coverage
Dependencies
Obfuscator
Profiling
OpenGL bindings
Εφαρμογές

Build Tools
Ant
http://ant.apache.org/
Τα κάνει όλα!
compile, copy, backup, javadoc, zip, jar, war, ftp, cvs
IDE integration
Tools integration

IDE
Intellij IDEA
http://www.jetbrains.com/
Refactorings

CVS
Server
CvsNt ( http://www.cvsnt.com/cvspro/ )
Client
jCVS ( http://www.jcvs.org/ )

Test
JUnit ( http://www.junit.org/index. htm )

Code Coverage
Clover ( http://www.cenqua.com/clover/ )
Emma ( http://emma.sourceforge.net/ )
java -cp emma.jar emmarun -r html –jar goal4d.jar

Dependencies
JDepend ( http://www.clarkware.com/software/JDepend.html )
Number of Classes and Interfaces
Afferent Couplings (Ca)
Efferent Couplings (Ce)
Abstractness (A)
Instability (I) : I = Ce / (Ce + Ca)
Distance from the Main Sequence (D) : A + I = 1
Package Dependency Cycles

Obfuscators
yguard ( www.yworks.com/en/products_yguard_about.htm )
<obfuscate mainclass="andyhot.chess.pgnview.PgnView" logfile="${dist.pgnviewer.dest.dir}/obf.log" replaceclassnamestrings="true"> <inoutpair in="${dist.dir}/pgnView.jar“ out="${dist.dir}/pgnViewO.jar"/> <expose> <class> <patternset> <include name="andyhot.chess.pgnview.PgnView"/> </patternset> </class> </expose> </obfuscate>

Profiling
JProfiler ( http://www.ej-technologies.com/ )
Memory Views
Class monitor
Allocations monitor
CPU Views
Invocation tree
Hot spots

JProfiler 1/4

JProfiler 2/4

JProfiler 3/4

JProfiler 4/4

OpenGL Java Bindings
GL4Java ( http://www.jausoft.com/gl4java.html )
YAJOGLB ( http://home.earthlink.net/%7erzeh/YAJOGLB/doc/YAJOGLB.html )
JOGL ( https://jogl.dev.java.net/ )
Άλλα ( http://www.opengl.org/resources/java/ )

Εφαρμογές
Terrain Editor ( http://andyhot.di.uoa.gr:8080/Java/terrain/terrain.html )
Chess Viewer ( http://andyhot.di.uoa.gr:8080/Java/pgnViewer3D/index.html )

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Goal4d

by andyhot on Sep 18, 2010

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Goal4d — Presentation Transcript