diff options
Diffstat (limited to 'doc/classes/Vector2.xml')
| -rw-r--r-- | doc/classes/Vector2.xml | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/classes/Vector2.xml b/doc/classes/Vector2.xml index 32895310d1..c97f99cfaa 100644 --- a/doc/classes/Vector2.xml +++ b/doc/classes/Vector2.xml @@ -154,7 +154,10 @@ <argument index="0" name="with" type="Vector2"> </argument> <description> - Returns the dot product with vector [code]b[/code]. + Returns the dot product with vector [code]b[/code]. This can be used to compare the angle between two vectors. For example, this can be used to determine whether an enemy is facing the player. + The dot product will be [code]0[/code] for a straight angle (90 degrees), greater than 0 for angles narrower than 90 degrees and lower than 0 for angles wider than 90 degrees. + When using unit (normalized) vectors, the result will always be between [code]-1.0[/code] (180 degree angle) when the vectors are facing opposite directions, and [code]1.0[/code] (0 degree angle) when the vectors are aligned. + [b]Note:[/b] [code]a.dot(b)[/code] is equivalent to [code]b.dot(a)[/code]. </description> </method> <method name="floor"> |