Download Presentation - Department of Computer Science and Engineering

Computer Science
Final Year Project
2002/2003
Firework Studio
Project Team ( BR1 ):
Advisor :
Chan Wai Wa ( Raymond )
Cheng Fun Hop ( Brian )
Ng Yat Wah ( Fat )
Dr. Michael S. Brown
Overview of Presentation
•
•
•
•
•
Introduction
Design & Implementation
Results
Conclusion
Q&A
Introduction
• Project background
• Originated in ancient China
• Joy & happiness in celebrations
events
• Motivation
• Commercial
• Design & testing efficiently
• Firework enthusiasts
• Free creation
and design
• Safe and legal
(in HK)
Introduction
• Description
• Software for designing fireworks/
fireworks shows
• Challenges
•
•
•
•
Realistic results
Real time performance
Easy to use
Diversified design
System Design
• Architectural Overview
• Design Pattern
• Model-View-Controller (MVC)
− Advantage: Clarity of design, ease to growth...
• Components
•
•
•
•
Composer
Simulator
Controller
Viewer
Composer
Sound System
View
Controller
Model
Simulator
Model
View
Viewer
Sound System
Components
• Simulator
• Core part
• Based on Particle System
• contains all calculations
• Viewer
• For showing simulation
• Composer
• Graphical User-Interface (GUI)
• Sound System
• API for generating sound
• Eg: explosion sound effect , background
music
Particle System
By Newton’s 2nd law : F = ma i.e.
a = F/m
v(tn) = a(tn) + v(tn-1)
x(tn) =v(tn) + x(tn-1)
position
velocity
Force accumulator
t1 – t4 : f1=f2=f3=t4=Gravitational force
-> the velocity changes
t3
t5 : Collision –> f5 = f4 + external force
f : for update position & velocity
t3
Modified Particle System
Assumption : No collision among firework particles
Force acting on particles : Gravitational force ONLY
By Newton’s 2nd law : F = ma i.e.
Initial position
a(t) = F(t)/m = constant = a
Initial velocity
v(tn) = at
a+
v(t
vn-1
a +v(tvn-2
) )initial
= ... =velcoity
atn + v(t0)
0 is
n +
0 ) = a + (where
x(tn) =atn2/2 + v0tn + x(t
x0 0)
where x0 is initial position
Advantages :
•System can be updated at any timer value
preview firework at any timer value
x0
v0
x
v
f
Data structure
Design time
Run time
Scene
Firework
Firework template
Scene
Particle Group
Emit action
Particle
Particle template
Explosion
- Create particles
- Make differences for a firework
design
• Explosion types example
Firework Trails
Implementation
• Simulator (simulation engine)
• VC++
• Viewer
• OpenGL SDK
• Composer (GUI)
• OpenGL User Interface (GLUI)
• Sound System
• OpenAL
Performance
Configuration
CPU
Memory
Video Card
Computer A
Computer B
Computer C
Computer D
Computer E
Pentium 4
2.26 GHz
Pentium 3
1 GHz
Intel Celeron
600 MHz
Pentium 3
733 MHz
Pentium 3
667 MHz
512 MB Ram
256 MB Ram
256 MB Ram
512 MB Ram
256 MB Ram
NVIDIA
Geforce 2
MX/MX
400
Intel(r) 82815
Graphics
Controller
NVIDIA
Geforce 2
MX/MX
400
On board S3 S3 Graphic Inc.
Graphic
Savage4
Inc.
ProSavage
FPS result of different scene on each computer
A
B
C
D
E
A empty scene
86
9
60
6
5
A complex scene (texture disabled)
47
6
17
5
3
A complex scene (texture enabled)
20
3
5
2
2
A normal scene (texture disabled)
60
8
42
6
3
A normal scene (texture enabled)
39
5
28
5
3
Conclusion
• Summary
• Realistic simulation
• Easy to use
• Real time result
• Possible Future Extensions
• Ranged parameters
• Movie export
• Customization
Demonstration