Difference between revisions of "C3DL Collision Detection"
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== Project Updates == | == Project Updates == | ||
=== February 2009 === | === February 2009 === | ||
| + | <i>Feb 12, 2009</i> | ||
| + | * C3DL meeting | ||
| + | ** extract the code for collision detection out of scene class and create a class of it's own | ||
| + | * Working on breaking down the updates into smaller steps | ||
| + | ** There was a major lag in performance, need to further investigate on what's the main cause of slow down | ||
| + | <i>Feb 8, 2009</i> | ||
| + | * created getNextPosition(timeStep) function | ||
| + | ** returns the position of the object after timeStep - ie. get the object's future position | ||
<i>Feb 4, 2009</i> | <i>Feb 4, 2009</i> | ||
* Dropped Tomas Moller's algorithm | * Dropped Tomas Moller's algorithm | ||
Revision as of 22:12, 13 February 2009
Contents
Name of Project
Canvas 3D - Collision Detection
Description
The ability to detect any object(s) colliding with object(s).
Blog: http://www.c3dl.org/index.php/development-news/
Basic Demo Page: http://matrix.senecac.on.ca/~pplam3/OSD/canvas3dapi-dev/testDemo.html
Advance Demo/Debugger Page: http://matrix.senecac.on.ca/~pplam3/OSD/canvas3dapi-dev/test.html
Leader(s)
Project Contributor(s)
- Catherine Leung
Contribution(s)
Student Demo
- Jan 27th (Week 3) - 10:00am
Releases
0.4 - Week of Jan 19
- Created flag for models to have collision detection
- Created set/get functions for flag
- Created function for bounding sphere for models
- Returns array of 2: Sphere Position (array of 3), Sphere Radius (float)
- Enable callback to check for collision detection when updating scene
0.5 - Week of Feb 2
- Performed initial test for collision
- Check flags
- Check for bounding sphere collision with out models with flags on
- Collision - distance of two bounding sphere's position is less than the sum of the radius of both sphere
- Perform 2nd test for collision
- Test for triangle-triangle intersection test between objects
0.6 - Week of Feb 16
Goal
0.7 - Week of Mar 9
Goal
0.8 - Week of Mar 23
Goal
0.9 - Week of Apr 6
Goal
1.0 - Week of Apr 20
Goal
Project Updates
February 2009
Feb 12, 2009
- C3DL meeting
- extract the code for collision detection out of scene class and create a class of it's own
- Working on breaking down the updates into smaller steps
- There was a major lag in performance, need to further investigate on what's the main cause of slow down
Feb 8, 2009
- created getNextPosition(timeStep) function
- returns the position of the object after timeStep - ie. get the object's future position
Feb 4, 2009
- Dropped Tomas Moller's algorithm
- Reapplied the idea of using line-triangle intersection test from picking
- Made two important change to get it working
- performed a check on the variable t to make sure it's between 0-1 (the length of the edges of triangle A)
- set the accuracy to 0.02 instead of 0.8
- Made two important change to get it working
Feb 3, 2009
- Implemented Tomas Moller's Triangle-Triangle Intersection Test algorithm
- Did not work, might have bugs in the implementation
- Causes extreme slowdown when objects with more faces exist (ie. sphere)
Feb 1, 2009
- Triangle-Triangle test failed using Ray-Triangle test
- Reading/Looking for other ways of doing Triangle-Triangle test
January 2009
Jan 31, 2009
- Reused code from picking function for triangle-triangle intersection test
- Using the 3 edges of Triangle A as lines and perform Line-Triangle intersection test
Jan 28, 2009
- Uploaded test page
- Created basic test/demo page
Jan 25, 2009
- Started on Triangle-Triangle Test function
Jan 17, 2009
- Perform initial test for bounding sphere collision
Jan 16, 2009
- Created bounding sphere for models
Jan 15, 2009
- Enable callback to collision detection function
- Created flags for collision detections
- Set/Get functions
Jan 13, 2009
- Created wiki page
