vectorCos: Difference between revisions
m (template:command argument fix) |
m (Unify version info for vector commands) |
||
| (56 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
{{ | {{RV|type=command | ||
| arma3 |= | |game1= arma3 | ||
|version1= 1.22 | |||
| | |gr2= Math - Vectors | ||
|descr= Cosine of angle between two 3D vectors. | |||
| | |s1= vector1 [[vectorCos]] vector2 | ||
| vector1 | |p1= vector1: [[Array]] - vector 3D or 2D ({{GVI|arma3|2.00|size= 0.75}} the z coordinate is defaulted to 0) | ||
| | |p2= vector2: [[Array]] - vector 3D or 2D ({{GVI|arma3|2.00|size= 0.75}} the z coordinate is defaulted to 0) | ||
| | |r1= [[Number]] | ||
|x1= <sqf>_cos = getPos player vectorCos [0,0,2];</sqf> | |||
|x1= < | |||
|seealso= [[vectorAdd]] [[vectorDiff]] [[vectorCrossProduct]] [[vectorDotProduct]] [[vectorMagnitude]] [[vectorMagnitudeSqr]] [[vectorMultiply]] [[vectorDistance]] [[vectorDistanceSqr]] [[vectorDir]] [[vectorUp]] [[setVectorDir]] [[setVectorUp]] [[setVectorDirAndUp]] [[vectorNormalized]] [[vectorFromTo]] [[matrixMultiply]] [[matrixTranspose]] | |||
}} | }} | ||
<dl class="command_description"> | <dl class="command_description"> | ||
< | |||
<dd class="notedate">Posted on 28 Jun, 2014 | <dt></dt> | ||
<dt class="note"> | <dd class="notedate">Posted on 28 Jun, 2014</dd> | ||
<dt class="note">[[User:ffur2007slx2_5| ffur2007slx2_5]]</dt> | |||
< | <dd class="note"> | ||
{{GVI|arma3|1.22}} Algorithm: | |||
<sqf> | |||
Vector1 = [x1,y1,z1]; Vector2 = [x2,y2,z2]; | Vector1 = [x1,y1,z1]; Vector2 = [x2,y2,z2]; | ||
Result = ((x1 * x2) + (y1 * y2) + (z1 * z2))/(( | Result = ((x1 * x2) + (y1 * y2) + (z1 * z2))/((sqrt (x1 ^ 2 + y1 ^ 2 + z1 ^ 2))*(sqrt (x2 ^ 2 + y2 ^ 2 + z2 ^ 2))); | ||
</ | </sqf> | ||
Given two vectors of attributes, A and B, the cosine similarity, cos(θ), is represented using a dot product and magnitude. The resulting similarity values indicating intermediate similarity or dissimilarity between two vectors. | Given two vectors of attributes, A and B, the cosine similarity, cos(θ), is represented using a dot product and magnitude. The resulting similarity values indicating intermediate similarity or dissimilarity between two vectors. | ||
</dl> | </dl> | ||
Latest revision as of 16:29, 18 March 2025
Description
- Description:
- Cosine of angle between two 3D vectors.
- Groups:
- Math - Vectors
Syntax
- Syntax:
- vector1 vectorCos vector2
- Parameters:
- vector1: Array - vector 3D or 2D (
2.00 the z coordinate is defaulted to 0) - vector2: Array - vector 3D or 2D ( 2.00 the z coordinate is defaulted to 0)
- Return Value:
- Number
Examples
- Example 1:
Additional Information
- See also:
- vectorAdd vectorDiff vectorCrossProduct vectorDotProduct vectorMagnitude vectorMagnitudeSqr vectorMultiply vectorDistance vectorDistanceSqr vectorDir vectorUp setVectorDir setVectorUp setVectorDirAndUp vectorNormalized vectorFromTo matrixMultiply matrixTranspose
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
- Posted on 28 Jun, 2014
- ffur2007slx2_5
-
1.22 Algorithm:
Given two vectors of attributes, A and B, the cosine similarity, cos(θ), is represented using a dot product and magnitude. The resulting similarity values indicating intermediate similarity or dissimilarity between two vectors.