Sets a vector's magnitude to a given value.
The static version of setMag(), as in p5.Vector.setMag(v, 10), returns a new p5.Vector object and doesn't change the original.
示例
语法
setMag(len)setMag(v, len, [target])参数
len
Number:
new length for this vector.
v
p5.Vector:
the vector to set the magnitude of
target
p5.Vector:
the vector to receive the result (Optional)
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