![](/img/trans.png)
[英]How do i find the smallest point P(x,y) containing triangle from a bunch of points?
[英]How do I find all points of an isosceles triangle given the vertex point, base midpoint, and base width?
找到B
和C
:
a_mA = (A - a_m)/|A - a_m|
a_mA
正交的向量–我们称它为a_mA'
a_mA' = (-a_mA.y, a_mA.x)
B
,沿a_mA'
的方向将步长width/2
单位加上a_m
:
B = (width/2)*a_mA' + a_m
C
,在a_mA'
的方向上以步长-width/2
单位并添加a_m
:
C = (-width/2)*a_mA' + a_m
JsFiddle示例: https ://jsfiddle.net/asq7h2jd/
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.