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Crafty.math.Vector3D #735

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@mucaho mucaho commented Feb 14, 2014

this PR was split from #708

adds the Crafty.math.Vector3D feature and tests

@kevinsimper
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Looks cool to me

result.setValues(this);
return result.crossProduct(vecRH).normalize();
}; // getNormal

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It's not clear to me that this is the equivalent of the 2D function of the same name -- I think that actually finds a unit vector that is normal to the line between the two input vectors, as opposed to being normal to both of them.

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So 2D getNormal ==

an unit vector that is perpendicular to the line between two vectors

and 3D getNormal ==

an unit vector that is perpendicular to the plane defined by the two 3D vectors

Do you want me to rename one of those methods? They both kind of have similar semantics though

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Honestly just looking at the name, I'd expect the behavior you implemented here -- maybe the 2D one should be renamed? They probably shouldn't have the same name, as that might be misleading.

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Well I can't think of a better name than getNormal for both 2D and 3D :)
I think we can still leave the names as they are, but rather improve the documentation.

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Ah I thought of one: rename to getPerpendicular for 2D. See #745

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mucaho commented Mar 8, 2014

adjusted the documentation for Vector3D.getNormal

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mucaho commented Mar 23, 2014

@starwed
Is the inclusion of this feature worth the extra space in crafty-min.js? If not, is there a way to place it into the commit history and remove it right away (it may come in handy in the future)?

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4 participants