A presentation I gave at CSMR 2009 in Kaiserslautern, Germany

1. EvoSpaces
Multi-dimensional Navigation Spaces
for Software Evolution
Michele Lanza, Harald Gall, Philippe Dugerdil

2. Contents

3. Contents

4. Contents

5. Contents

6. Contents

7. Key Data
People & Money

8. Project Summary

9. Project Summary
Duration Jan 2006 - Dec 2009
Budget ~ 550,000 EUR
Funding Hasler Foundation

10. Project Summary
Duration Jan 2006 - Dec 2009
Budget ~ 550,000 EUR
Funding Hasler Foundation

11. Project Summary
Duration Jan 2006 - Dec 2009
Budget ~ 550,000 EUR
Funding Hasler Foundation

12. Goal, Questions, Tracks

13. Goal, Questions, Tracks
‣ Goal: Exploit multi-dimensional navigation spaces to
efficiently visualize evolving software systems

14. Goal, Questions, Tracks
‣ Goal: Exploit multi-dimensional navigation spaces to
efficiently visualize evolving software systems
‣ Questions
1. What is the right metaphor to visualize software systems in 3D?
2. How do we interact with & navigate such an information space?
3. How can our visualizations contribute to and enrich the existing
body of reverse engineering knowledge?

15. Goal, Questions, Tracks
‣ Goal: Exploit multi-dimensional navigation spaces to
efficiently visualize evolving software systems
‣ Questions
1. What is the right metaphor to visualize software systems in 3D?
2. How do we interact with & navigate such an information space?
3. How can our visualizations contribute to and enrich the existing
body of reverse engineering knowledge?
‣ Tracks
1. Software Models
2. Visualization Models
3. Interaction & Navigation Models
‣ Prototyping & Integration

16. Project Setup

17. Project Setup

18. Project Setup

19. Approach
Visualizing Software Systems as Cities

20. Software Visualization
“The use of the crafts of typography,
graphic design, animation, and
cinematography with modern
human-computer interaction and
computer graphics technology to
facilitate both the human
understanding and effective use of
computer software.”
John Stasko, 1998

21. Software Visualization
“The use of the crafts of typography,
graphic design, animation, and
cinematography with modern
human-computer interaction and
computer graphics technology to
facilitate both the human
understanding and effective use of
computer software.”
John Stasko, 1998

22. “Software is intangible,
having no physical shape or size.”
Thomas Ball, Stephen Eick
“Software Visualization in the Large”
In Computer, vol. 29, no.4, pp. 33-43, IEEE
Computer Society Press, 1996

24. “Habitability is the characteristic of source code
that enables programmers, coders, bug-fixers,
and people coming to the code later in its life to
understand its construction and intentions and
to change it comfortably and confidently.”
Richard Gabriel
On “Habitability and Piecemeal Growth”; in
“Patterns of Software”

25. The City Metaphor

26. The City Metaphor
domain mapping
classes buildings
packages districts
system city

27. The City Metaphor
domain mapping
classes buildings
packages districts
system city

28. The City Metaphor
domain mapping
classes buildings
packages districts
system city

29. The City Metaphor
domain mapping
classes buildings
packages districts
system city
class metric building property
number of methods (NOM) height
number of attributes (NOA) width, length
package metric district property
nesting level color

30. CodeCity (U Lugano)
Azureus ArgoUML

31. CodeCity @ Work

32. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

33. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

34. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

35. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

36. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

37. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

38. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

39. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

40. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

41. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

42. CodeCity @ Work
System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

43. CodeCity @ Work System Language NOP NOC LOC
Azureus Java 457 4’734 274’000
ArgoUML Java 144 2’542 137’000
JHotDraw Java 72 998 30’000
iText Java 149 1’250 80’000
Jmol Java 105 1’032 85’000
JDK 1.5 Java 137 4’715 160’000
Moose Smalltalk 278 961 32’000
Jun Smalltalk 288 2’236 351’000
CodeCity Smalltalk 129 291 18’000
ScumVM C++ 18 1’331 105’000

44. The Age Map
CH.ifa.draw.framework
class StandardDrawingView CH.ifa.draw.figures
in CH.ifa.draw.standard.
class DrawApplication
in CH.ifa.draw.application
library packages:
java
javax
junit
org.w3c.dom
CH.ifa.draw.standard
CH.ifa.draw.test
(classes) AllTests

45. The Time Machine

46. The Time Machine

47. Meanwhile in Zurich: CoCoViz!

48. The Essence? The EvoSpaces Tool (HEG Geneva)

49. The Essence? The EvoSpaces Tool (HEG Geneva)

50. The Essence? The EvoSpaces Tool (HEG Geneva)

51. The Essence? The EvoSpaces Tool (HEG Geneva)

52. Results
Publications & Tools

53. Publications & Tools

54. Publications & Tools
‣ Publications
‣ 1 book chapter
‣ 6 conference papers @
ICSM, WCRE, Softvis, ICPC,
INTG, SEKE
‣ 4 workshop papers @
VISSOFT, VISSOFT,
WASDeTT, FAMOOSr
‣ 4 tool demos @ ICSE, ICSE,
WCRE, WCRE
‣ 1 PhD symposium @ ICSE
‣ 1 tutorial @ OOPSLA
‣ More are coming..

55. Publications & Tools
‣ Publications
‣ 1 book chapter
‣ 6 conference papers @
ICSM, WCRE, Softvis, ICPC,
INTG, SEKE
‣ 4 workshop papers @
VISSOFT, VISSOFT,
WASDeTT, FAMOOSr
‣ 4 tool demos @ ICSE, ICSE,
WCRE, WCRE
‣ 1 PhD symposium @ ICSE
‣ 1 tutorial @ OOPSLA
‣ More are coming..

56. Publications & Tools
‣
‣ Publications Tools
‣ 1 book chapter ‣ CoCoViz
‣ 6 conference papers @ ‣ CodeCity
ICSM, WCRE, Softvis, ICPC,
‣ “The EvoSpaces” tool
INTG, SEKE
‣ 4 workshop papers @
VISSOFT, VISSOFT,
WASDeTT, FAMOOSr
‣ 4 tool demos @ ICSE, ICSE,
WCRE, WCRE
‣ 1 PhD symposium @ ICSE
‣ 1 tutorial @ OOPSLA
‣ More are coming..

57. Publications & Tools
‣
‣ Publications Tools
‣ 1 book chapter ‣ CoCoViz
‣ 6 conference papers @ ‣ CodeCity
ICSM, WCRE, Softvis, ICPC,
‣ “The EvoSpaces” tool
INTG, SEKE
‣ 4 workshop papers @
VISSOFT, VISSOFT,
WASDeTT, FAMOOSr
‣ 4 tool demos @ ICSE, ICSE,
WCRE, WCRE
‣ 1 PhD symposium @ ICSE
‣ 1 tutorial @ OOPSLA
‣ More are coming..

58. Reflections
Unforeseen Consequences

59. No Stakeholder

60. No Stakeholder
No Stake

61. No Stakeholder
No Stake
Total Academic Freedom

62. Collaboration
mostly conceptual,
less technical

63. 2 PhDs 1 Programmer

64. 2 PhDs 1 Programmer

65. Success?
Yes & No

66. EvoSpaces
Multi-dimensional Navigation Spaces
for Software Evolution
Michele Lanza, Harald Gall, Philippe Dugerdil