Models as the Basis for Visual Representation Level of abstraction: - - PowerPoint PPT Presentation

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models as the basis for visual representation
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Models as the Basis for Visual Representation Level of abstraction: - - PowerPoint PPT Presentation

Jun 27, 2023 979 likes •1.11k views

Models as the Basis for Visual Representation Level of abstraction: 1. Low: realistic 3D visualisation 2. High: insight at high abstraction level Link visualisation to model: 1. entity relationships (structure) 2. entity attributes

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SLIDE 1

Models as the Basis for Visual Representation

Level of abstraction:

  • 1. Low: “realistic” 3D visualisation
  • 2. High: “insight” at high abstraction level

Link visualisation to model:

  • 1. entity relationships (structure)
  • 2. entity attributes

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 1/7

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SLIDE 2

Categories of Simulation Animation Implementation

  • 1. Animation using a post-processor
  • 2. Direct simulation animation
  • integrated program (one thread)
  • cooperating programs (multiple threads, observer pattern)
  • 3. Visual Interactive Simulation: user in the loop
  • interrupt, modify (parameters, IC, . . . ), re-start
  • discrete event: transient behaviour
  • discrete event: statistical relevance ?
  • need to keep track of modifications

(generate script logging the modifications)

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 2/7

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SLIDE 3

Technical Problems of Simulation Animation

  • Transformation of simulated time to wall-clock time:

non-equidistant, speedup/slowdown

✁

use buffer

  • Suspension of animation on multi-tasking systems
✁

pre-compute (only if no real-time input)

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 3/7

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SLIDE 4

Real Time Simulation

wall clock time virtual time Real Time slower than Real Time faster than Real Time "analytical"

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 4/7

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SLIDE 5

Specification

  • 1. Simulation (event, possibly parametrized) trace
  • 2. Graphical objects
  • 3. Mapping table: event
✂

graphical object methods

  • 4. Speedup

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 5/7

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SLIDE 6

Cashier/Queue Animation

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 6/7

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SLIDE 7

Real Time Deadlines: Rate Monotonic Scheduling (RMS)

Real Time Deadlines t simulation

Hans Vangheluwe hv@cs.mcgill.ca Modelling and Simulation: simulation animation 7/7