Crash course in Grafica 3D

Dezvoltare de jocurisi

OpenGL ES pe AndroidRazvan Madalin

Oitacrioro@yahoo.co

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Prezentare Droid in a Tunnel

Real-time rendering• Lights, camera, action!• Real-time, 30/60 FPS

• Scena, obiecte statice/dinamice

Geometrie• Vertex• Triunghi• Poligon

• Primitiva• Mesh-uri si modele

Sisteme de coordonate• Object Space• World Space

• Eye/Camera/View Space• Clip coordinates

• NDC si coordonate ecran

Transformari• Translatie, scalare, rotatie

• Proiectie ortografica/perspectiva

Lumini• Parallel Lights• Point Lights• Spot Lights

• Reflexii, refractii, transmisie• Iluminare locala/globala, etc.

Game Engine Architecture• Renderer

• Physics System• Animation System

• Game objects• AI

Fizica• Simulare

• Collision detection• Bounding objects

Game Objects• Class based/Object Oriented

• Component Based• Property Based

OpenGL ES• Activity si View

• extends GLSurfaceView / event-uri• implements GLSurfaceView.Renderer

• onSurfaceCreated(), onSurfaceChanged(), onDrawFrame()

Obiecte 3D in OpenGL ES• Vertex Buffer• Index Buffer

• Backface Culling• Color Buffer

• Structura Vertex

Transformari OpenGL ES• GL_MODELVIEW, GL_PROJECTION,

GL_TEXTURE GL_COLOR• glTranslatef(), glRotatef(),

glScalef()• gluLookAt(eye, center, up)

Droid in a Tunnel• Idee

• Experienta• Cunostinte

Activity si View

• Vortex• VortexView

• SensorManager, SensorListener• Control cu accelerometru

Primitive• Mesh• Cube

Tunelul• Un tor

• Obstacolele• Camera/gluLookAt()• Collision Detection

• Probleme (mari, de design)

Renderer• perspective()

• Probleme