Given the [x,y,z] coordinates for the three points pa, pb, and pc, return true if the test point pc is on the line segment with endpoints pa and pb.
pc is on the line segment if it lies at one of the end points.
Your recent edit to the test suite broke it. You need a space or a comma between the two -1 in the definition of pa in the first test.
Thanks, Guillaume. I just fixed the error.
perhaps a few more test cases will help...
This is not a proper solution. For example it returns false negative for pa = [0,0,0]; pb = [3,3,0]; pc = [2,2,0]; and false positive for pa = [0,0,0]; pb = [3,3,3]; pc = [2,2,1];
Thanks for pointing this out, Jan.
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