I've tried with primitive properties look at and my badly formed vex.
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Sorry I'm sure that I am missing the obvious.
primitive properties lookat
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- GrahamDClark
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- toadstorm
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Here's one way to do it. I'm using dihedral() in a prim wrangle to compute the matrix that would rotate each primitive's normal to face the vector you want. I'm also binding the center of each primitive to a temporary attribute... this is because when you multiply a point by a 3x3 matrix, you need to make sure the center of rotation is at the origin. Once that's done, I promote the attributes to points, then use a point wrangle to move each primitive's points so that the center is at the origin, multiply by the calculated matrix, then move back to the original pivot position.
MOPs (Motion Operators for Houdini): http://www.motionoperators.com [www.motionoperators.com]
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- GrahamDClark
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Awesome, always loved your site and MOPs.
I changed one part so the prims faced the target more and the geo could be moved.
Thank you again, hours of pain lifted.
I changed one part so the prims faced the target more and the geo could be moved.
//vector target = normalize(point(1, "P", 0)); vector p0 = point(1,'P',0); vector target =normalize(p0-@P);
Thank you again, hours of pain lifted.
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Edited by GrahamDClark - Dec. 12, 2022 18:21:01
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- toadstorm
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Oh right, duh. Forgot to include @P in the target vector. Thanks for catching that!
MOPs (Motion Operators for Houdini): http://www.motionoperators.com [www.motionoperators.com]
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