bruce damer's presentation of digital spaces, an open source 3d simulation platform for space...
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Bruce Damer's presentation of Digital Spaces, an open source 3D simulation platform for space applications (NASA Ames, May 5, 2009)TRANSCRIPT
Bruce Damer, CEODigitalSpace Corporation343 Soquel Ave, Suite 70Santa Cruz, CA 95062Ph: 831 338 9400Email: [email protected]
Digital Spaces (DSS)An open source 3D simulation platform for
space applications
Digital SpacesOpen Source Real-time 3D Modeling and Simulation
I. OverviewII. BeginnningsIII. Early Work
IV. Surface MobilityV. Demo – ESS STS-125
VI. Architectural OverviewAcknowledgements
I. Overview• Development funded by: NASA Ames, HQ & NASA Centers, ESA, Raytheon, Boeing, Adobe & numerous smaller entities • Predecessor work: 1998-2002, DSS development from: June 2003• Public Developer Release: digitalspaces.net Nov 2007• Applications developed: 24 projects and additional under contract• Awards: Techbriefs, Spinoff, SBIR lead commendation• Ongoing Users: NASA, European Space Agency, Univ Toronto, sysRAND, Humanspace, JHU/APL
II. Beginnings- In 1999-99, designing immersion through story in the Virtual Walk on the Moon with Apollo astronaut
Rusty Schweickart
Rusty Schweickart in Cyber Space - 1999
Rusty Schweickart in Outer Space - 1969
On July 20, 1999 Rusty Schweickart entered an avatar space as our narrator to commemorate the 30th anniversary of the Apollo XI moon landing
This work was presented to NASA leading to the funding of DigitalSpace and Digital Spaces (DSS)
and the following Portfolio of Projects
III. Early work (2000-2003) - Modeling human/machine activities in Mars Analogs, BrahmsVE
utilizing Adobe Atmosphere, Clancey, Sierhuis, NASA ARC
BrahmsVE/SimHabModeling process
Video and other activity capture
Geographic model: waypoints
Brahms agent model
Object, gesture and agent 3D models
- Planning meeting, water tank filling, EVA prep
BrahmsVE/SimHab
BrahmsVE/SimHab
PSA Robot aboard a Virtual Space Station
PSA Robot aboard a Virtual Space Station
Shuttle Operations and ISS Construction
- Training environment for STS-114 (NBL) 2004
Educational Spacewalk Simulation- STS-125 Hubble Servicing Mission (May
2009)
IV. Surface Mobility- Mars surface modeling from orbital height data
and DriveOnMars MER simulation (2003-04)
DriveOnMarsDigitalSpace training environment for NBL
“Drive On Mars” lighting for night-day transition, basic modeling of vehicle systems, RAT instrument deployment
Lunar Surface Robotics- NASA ARC, Colorado School of Mines
(2004-2006)
Colorado School of MinesPrototype Lunar Bucket Wheel Excavator
DigitalSpace Lunar analog simulation of BWE
Lunar Bucket Wheel Excavator
Lunar Bucket Wheel Excavator
Raytheon CE&R studies- Telerobotically build a Lunar base (2004-2005)
Raytheon CE&R studies- Telerobotically build a Lunar base (2004-2005)
Telerobotic Lunar Outpost Construction – mission concept (animation)
Telerobotic Lunar Outpost Construction
Microsat Lander & LSAM Landing Dynamics
- NASA Ames Research Center, JSC (2006)
Microsat Lander & LSAM Landing Dynamics
Microsat Lander & LSAM Landing Dynamics
• Crater Rim (Sunlight Area) Exploration– Imaging of site from surface—time data
collection to correlate with LRO orbital images of same conditions (pan every 2 hours over 1 year)
– Geotechnical properties of lunar regolith (bearing strength, soil composition, cohesiveness, block and slope populations)
– Biological effects of radiation, reduced gravity over 1 year
• Crater Floor (Dark Area) Exploration– Physical environment and geotechnical
properties (temperatures, soil characteristics, etc.)
– Examine both surface and subsurface of cold trap region
– Volatile deposits: elemental and molecular composition, species abundance, physical state, distribution and extent; number of samples from varied locations in crater floor; locations and settings documented
Find the LightFind the Light
Touch the IceTouch the Ice
RLEP2 Lunar Rover Polar Ice Mission- NASA MSFC, ARC, JPL/TeamX
Model: Dawes Crater
As imaged by Apollo XV
Design challenge: traverse steep
crater wall on the Lunar south pole
RLEP2 Lunar Rover Polar Ice Mission- NASA MSFC, ARC, JPL/TeamX
RLEP2 Lunar Rover Polar Ice Mission- NASA MSFC, ARC, JPL/TeamX
RLEP2 Lunar Rover Polar Ice Mission- Virtual Lunar Hazard Yard
RLEP2 Lunar Rover Polar Ice Mission- Preliminary Design
RLEP2 Lunar Rover Polar Ice Mission- Final vehicle in hazard yard
2007 Project: Lunar Regolith Dig-Balovnev model, Matlab output
2007 Project: Lunar Regolith DigSurface mesh deformation – Nader, University of Toronto
Constellation to NEO trade study- modeling, visualization
Constellation to NEO trade study- modeling, visualization
Constellation to NEO trade study- modeling, visualization
Constellation to NEO trade study- modeling, visualization
Constellation to NEO trade study- modeling, visualization
Constellation to NEO trade study- publicity
Constellation to NEO trade study- modeling, visualization
Educational Spacewalk Simulation- STS-125 Hubble Servicing Mission (May
2009)
V. Demo
Digital SpacesOpen Source Real-time 3D Modeling and Simulation
VI. Architectural Overviewwith Peter Newman
Digital Spaces Philosophy
• Leverage the experience of existing open source components
• Provide Digital Spaces for free to encourage adoption o Encourage engine development by individuals and
commercial interestso Encourage content development by individuals and
commercial interestso Provide services doing engine and content development for
commercial interests• Modular design for flexibility
o Provide back and future compatibility with clearly defined module interfaces
o Allow easy expansion and development, including component replacement, without breaking compatibility
Libraries used
• OGREo Cross platformo Multiple render systems for maximum compatibilityo Fast and efficient implementationo Free to develop and distribute
• ODEo Free to develop and distributeo Platform independent
• Pythono Cross platform o Wide range of additional librarieso Fast implementation
3D Authoring Packages Used
• 3D Studio Max• Other packages with Ogre exporters
Modular design
• Implementation is abstracted, allowing future replacement without breakageo For example, Physics_Gangsta was replaced with
Physics_ODE• Modules wrap libraries, leveraging existing development and
allowing addition of compatibility/adapter code
Loosely heirachal design
• Allows programatic control over all aspects of the system• Provides useful midlevel interfaces for reducing complexity
Module descriptionScript_Python Embeds a Python interpreter in Digital Spaces to provide a Rapid Application Development layer for Space specific logic. AgentManager Implements the control logic for a range of predefined Agent types (semi autonomous conceptual entities). SGManager Provides a higher level coordination between other Components that involve a 3D scene graph. Responsible for parsing Scene files, and for connecting physics to graphics. Physics_ODE Provides rigid body physics simulation. 3DVisuals_OGRE Provides 3D rendering, including model, texture and particle system loading (and others).
Module descriptionUserInput_DirectInput Provides user input to the system. This includes keyboard, mouse and joystick, or any other DirectX supported device.VehicleAgent_Control Connects user input to control of a specific type of Agent.GUI_CEGUI Provides a 2D overlay UI over 3DVisuals_OGRE. CorePerforms component loading, initial inter-component communication, and work scheduling.
Not shown: All file resources are loaded through DataResource module. Allows abstraction of resource locations and types. Integrated with Core to allow initial resource loading.
Visual Content Work Flow
How visual content is processed in Digital Spaces
Space file is parsed by CoreConfiguration data is passed to appropriate components.
Scene file is parsed by SGManagerBased on the configuration data, the SGManager uses the DataResource Manager to load the Scene file, and parses it.
Heirachal objects are createdAs the scene file is processed, heirachal objects are created in the SGManager, their representations are created in any component implementing DISGRepresentative, and configured with any type specific information.
Leaf objects are createdWhen the end of a heirachal branch is reached, "leaf" objects are created in the SGManager, their representations are created in anything inmplementing DISGRepresentative, and configured with any type specific information.
Visual object creation Visual objects (such as meshes) are created as part of creating the SGManager leaf objects. The DataResource Manager is used to load any required model resources, and are parsed and instanced in OGRE.
Positional information is appliedInformation that is common to the SGManager objects, specifically positional, orientation and scale information, is applied to the SGObjects, and thus their representations.
Summary:DigitalSpace DSS modular plug-in architecture(roadmap)
This work was funded by NASA Ames Research Center and other NASA Centers through various federal and subcontractor contracts. Special thanks to Pete Worden for supporting the public outreach direction of this work.For further information and use please contact:Bruce Damer, CEODigitalSpace Corporation343 Soquel Ave, Suite 70Santa Cruz CA 95062Ph: 831 338 9400Email: [email protected]
Acknowledgements