I m trying to implementing Terrain following
for that i am using a pick tool class
Setting its PickRay to Start at My current Postion
and Pointing Vertically down
Then i pick the closest result into a PickResult
Object and from this result i query intersection(0)
This is working absolutely fine when i make it walk on
the Random shape3D Object that i made
but my world consist of Models imported from the
3DMax studios (using 3ds loader) when i try to make my
avtar walk on this terrain it walks fine for some time
and crashes with
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:507)
at java.util.ArrayList.get(ArrayList.java:324)
at
ViewPointTest.PickResult.getIntersection(PickResult.java:457)
at
ViewPointTest.SimpleKeyBehavior.processStimulus(SimpleKeyBehavior.java:86)
at
javax.media.j3d.BehaviorScheduler.doWork(BehaviorScheduler.java:172)
at javax.media.j3d.J3dThread.run(J3dThread.java:250)
at ...intersect = picked.getIntersection(0);
I have no idea why this is comming
So i Tryied and traced the Pickresult class for any
answere i found that my Shape has geometry of type
TriangleStripArray
at the point of Exception my observations are:
1) program control reaches till that point where the
PickResult is not null but ( I don't understand why
!!) the intersection(0) gives out of bounds..i mean
why should it logically speaking when i can see ground
underneath and somthing has been picked why should the
intersections be none!!
1) When stripVertexCounts in method - boolean
intersectTSA(TriangleStripArray geom, int
geomIndex,Point3d[] pnts, boolean firstpick,
PickIntersection pi) in class Pick Result grows more
than 186 in count (ofcourse i don't have enough number
of samples to give an exact number, i suspect that it
has something to do with increasing count) then
suddenly this error is thrown
2) at that Point the Method static boolean
intersectRayOrSegment returns false and it crashes
with the exception as mentioned earlier
Some help from someun??
Reagrds
Ashish
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