Glue object to limb - Rotation problems

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TheDuke

19

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Joined: 28th Feb 2007

Location: Denmark

Posted: 6th Jan 2011 08:26

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Originally posted here:
http://forum.thegamecreators.com/?m=forum_view&t=179775&b=22
But no one seemed to be able to answer this on the DarkGDK forums so i translated the code and posted it here.
I might have gotten some things wrong at the translation but i hope it's readable

Soo i have problems applying the rotation properly after i glue an object to a limb, i made some code where i basically cut off a limb and then reapply it to the model. Using the ninja model from the DarkMatter.

+ Code Snippet

NinjaLimbObject = GetNextObjectID();
	Make Object From Limb NinjaLimbObject, ModelID, 11
	Position Object NinjaLimbObject, 0, 0, 0
	Scale Object NinjaLimbObject, 1000, 1000, 1000
	GlueObjectToLimb NinjaLimbObject, ModelID, 11

I attached an image of the outcome. Clearly i have to rotate the object in some way. Maybe something like i do with the Position Object. As the rotation becomes relative to the limb. However i did this:

+ Code Snippet

a = Object Angle X NinjaLimb
	b = Object Angle Y NinjaLimb
	c = Object Angle Z NinjaLimb

And they all returned 0.

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Sven B

21

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Joined: 5th Jan 2005

Location: Belgium

Posted: 6th Jan 2011 08:59 Edited at: 6th Jan 2011 09:05

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I would suggest trying
Limb Direction X/Y/Z()
to rotate your object.

It returns (or at least should return) the global angles of the limb.

[edit] It seems that glue object to limb should control position as well as rotation and scaling... I have no idea in that case. Does the sword object moves when you animated the ninja?
Because if it's just a fixed error, then you could use rotate limb on limb 0 of the sword until it looks right.

Cheers!
Sven B

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TheDuke

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Joined: 28th Feb 2007

Location: Denmark

Posted: 6th Jan 2011 10:46

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Well i can adjust the rotation manually. But i wanted to do it programtically. So i can make a dynamic class of it that can be used for several instances.. But i guess sometimes there is no easy way

other than make a specialized model where i know where the limb is pointing to.

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baxslash

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Bronze Codemaster

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Joined: 26th Dec 2006

Location: Duffield

Posted: 6th Jan 2011 10:51

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I have a function which glues two objects together based on where they both are in world space using EZ rotate if that's any use:

+ Code Snippet

function glue_object_to_object(a,b,limb)
    `get start and end point offsets
    `start point
    EZro_ObjFindOffsetFromPoint b, object position x(a),object position y(a),object position z(a)
    x1#=EZro_GetOffsetX()
    y1#=EZro_GetOffsetY()
    z1#=EZro_GetOffsetZ()
    `end point
    move object a, 1
    EZro_ObjFindOffsetFromPoint b, object position x(a),object position y(a),object position z(a)
    x2#=EZro_GetOffsetX()
    y2#=EZro_GetOffsetY()
    z2#=EZro_GetOffsetZ()
    move object a, 1
    `position child
    position object a, x1#,y1#,z1#
    `point at end point
    point object a, x2#,y2#,z2#
    `glue to limb
    glue object to limb a, b, limb
endfunction

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DarkBASIC Professional Discussion / Glue object to limb - Rotation problems