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DarkBASIC Professional Discussion / Matrix shaped by objects

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Terabyte
23
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Joined: 28th Dec 2002
Location: UK
Posted: 1st Nov 2003 04:05
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Is it possible to place an object in a matrix and get the batrix to shape itself round it... rather like an object hitting the ground and making a dent. Memblocks? possibley? how could you make a sphere dent in a matrix? code would be nice.. i dont have a flecking clue about mem blocks

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indi
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Joined: 26th Aug 2002
Location: Earth, Brisbane, Australia
Posted: 1st Nov 2003 04:47
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Im in a cafe so i dont have a snippet.

heres the thoery behind it.


use a for loop the same divisions of your matrix and use the get ground height on the matrix with the object at hand.



you can sculpt the matrix to reflect the shape of the primitive or imported shape with the set matrix height command.

Now in some instances like for example a cone will produce a weird result, it shows up like a hemisphere but for taking a 3ds landscape or a cube tilted to an angle it works a treat.

I cant claim fame to this trick, a long time ago in a galaxy far away was a clever monkey called tdboy who first showed me this idea in action. It will work for both dbp and dbc.
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Terabyte
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Posted: 1st Nov 2003 11:13
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ReD_eYe
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Joined: 9th Mar 2003
Location: United Kingdom
Posted: 1st Nov 2003 12:01
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theres some code for this in the codebase!
http://darkbasicpro.thegamecreators.com/?m=codebase_view&i=bffdf2f9dd18437292b773dff1f2e31d
check it out!


Go on, click on my signature image, you know you want to
Favourite smiley>>>
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GCEclipse
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Joined: 23rd Sep 2002
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Posted: 1st Nov 2003 12:09
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Yeh, I was going to work on an improved version of that code but the codebase entry does at least show the principles behing how to do it.

GC
http://www.eclipsedevelopment.co.uk/
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Terabyte
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Posted: 1st Nov 2003 14:01
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hey
thats great....
one thing
that code puts the matrix ontop of the object... how do you put it underneath?

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Terabyte
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Posted: 1st Nov 2003 14:02
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EDIT: would i just put a - sign in there?

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GCEclipse
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Joined: 23rd Sep 2002
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Posted: 1st Nov 2003 21:45
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I THINK this will reverse it but I haven't tested it:

Change the line:

R#=INTERSECT OBJECT(Objno,x#,height#,z#,x#,0-height#,z#)

to:

R#=INTERSECT OBJECT(Objno,x#,height#*-1,z#,x#,0+height#,z#)

I will try it out later.

GC
http://www.eclipsedevelopment.co.uk/
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