AngleVectors(): Difference between revisions
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Note:None of the functions return values; instead, you must declare all the variables you need beforehand.
TomEdwards (talk | contribs) (Created page with ''''<code>AngleVectors()</code>''' converts a <code>QAngle</code> into either one or three normalised <code>Vector</code>s. * If there is only one Vector, it points i…') |
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'''<code>AngleVectors()</code>''' converts a <code>[[QAngle]]</code> into either one or three [[normal]]ised <code>[[Vector]]</code> | {{DISPLAYTITLE:AngleVectors() and VectorAngles()}} | ||
'''<code>AngleVectors()</code>''' converts a <code>[[QAngle]]</code> into either one or three [[normal]]ised <code>[[Vector|Vectors]]</code>. | |||
* If there is only one Vector, it points in the same direction as the QAngle ("forward"). | * If there is only one Vector, it points in the same direction as the QAngle ("forward"). | ||
* If there are three Vectors, they point forward, right and up respectively. | * If there are three Vectors, they point forward, right and up respectively. | ||
'''<code>VectorAngles()</code>''' converts a single <code>Vector</code> into a <code>QAngle</code>. You can | '''<code>VectorAngles()</code>''' converts a single <code>Vector</code> into a <code>QAngle</code>. You can optionally pass a <code>pseudoup Vector</code> which is useful if you're creating the QAngle based on orthogonal axes and don't want to lose rotational information; it will merely determine the roll component of the QAngle. | ||
{{note|None of the functions return values; instead, you must declare all the variables you need beforehand. <code>AngleVectors()</code> requires you to pass pointers while <code>VectorAngles()</code> does not.}} | {{note|None of the functions return values; instead, you must declare all the variables you need beforehand. <code>AngleVectors()</code> requires you to pass pointers while <code>VectorAngles()</code> does not.}} | ||
Latest revision as of 00:17, 5 December 2011
AngleVectors() converts a QAngle into either one or three normalised Vectors.
- If there is only one Vector, it points in the same direction as the QAngle ("forward").
- If there are three Vectors, they point forward, right and up respectively.
VectorAngles() converts a single Vector into a QAngle. You can optionally pass a pseudoup Vector which is useful if you're creating the QAngle based on orthogonal axes and don't want to lose rotational information; it will merely determine the roll component of the QAngle.
Note:None of the functions return values; instead, you must declare all the variables you need beforehand. AngleVectors() requires you to pass pointers while VectorAngles() does not.Example
Vector fwd, rt, up;
AngleVectors( myAngle, &fwd, &rt, &up);
QAngle angles;
VectorAngles( myVector, angles );