vertex position question

Blitz3D Forums/Blitz3D Programming/vertex position question

Damien Sturdy (Posted 2004) [#1]

Hey peeps.. Im looking to transform a mesh's vertexX, Y and Z positions to global positions. Can this be done, if so, how? Ive got a neato little function thats playing up from my kludges so im going to restart it, but this is the key to it working right this time....

Stevie G (Posted 2004) [#2]

Something like this should work - not tested .... For s = 1 To CountSurfaces( mesh ) For v = 0 To CountVertices( s ) - 1 TFormPoint VertexX(s,v), VertexY(s,v), VertexZ(s,v), Mesh, 0 x# = TFormedX() y# = TFormedY() z# = TFormedZ() Next Next

AntonyWells (Posted 2004) [#3]

You'll have to scale it too, if the mesh isn't at 1,1,1 scale.

Stevie G (Posted 2004) [#4]

I don't think you do Anthony as the tform commands take this into consideration - I always found it a pain in the butt!!

Sunteam Software (Posted 2004) [#5]

One thing to remember... you can't get vertex positions that are transformed by animation, only the initial start positions. Just a note to remember if you didn't know already :)

Damien Sturdy (Posted 2004) [#6]

Cheers guys. @Stevie G The tformvector function wouldnt do what i needed it. @Sunteam Im not animating the object. I found a rather "kludgy" solution, using pivots. Thanks for your inputs anyway :D

Stevie G (Posted 2004) [#7]

TformPoint is what I suggested. Why would it not work - what is it you're doing that's different from your explanation above?

Damien Sturdy (Posted 2004) [#8]

sorry! didnt read it properly!!! thats what i get for scanning. Tformpoint.... ahh! see, what I was doing- was tformvector- and when i saw the tformxx and tformedx() commands, iassumed incorrectly,. Thanks! Stevie G, i will go and try this when i get hold of the source... have to be later as my server seems to have died, yet again >.< hehe.. Cheers again!