openscad/dotSCAD
1
0
Fork 0
mirror of https://github.com/JustinSDK/dotSCAD.git synced 2025-08-18 20:41:18 +02:00
Code Issues Releases Wiki Activity

add tri_is_ccw

Browse Source
This commit is contained in:
Justin Lin
2021-08-26 18:49:42 +08:00
parent 21754293c8
commit 679e3aae62
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/experimental/tri_is_ccw.scad Normal file
View File

@@ -0,0 +1,6 @@
function tri_is_ccw(p1, p2, p3) =
let(
area = (p2[0] - p1[0]) * (p3[1] - p1[1]) - (p3[0] - p1[0]) * (p2[1] - p1[1]),
_ = assert(area != 0, "points are collinear")
)
area > 0;