Mercurial > hg > orthanc-stone
view Resources/Computations/IntersectSegmentAndVerticalLine.py @ 1314:9b126de2cde2 broker
Since the observer system now uses shared_ptr and many registrations are
done in the constructors, and since we cannot called shared_from_this() in
the constructors, it is mandatory to split construction from registration.
This has been done by making many ctors protected and replacing them
by factory methods that directly return shared_ptrs + added PostConstructor
method when base classes perform shared_from_this() calls too.
author | Benjamin Golinvaux <bgo@osimis.io> |
---|---|
date | Mon, 16 Mar 2020 11:19:50 +0100 |
parents | 35c2b85836ce |
children |
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#!/usr/bin/env python from sympy import * # Intersection between the 2D line segment (prevX,prevY)-(curX,curY) and the # vertical line "x = x0" using homogeneous coordinates prevX, prevY, curX, curY, x0 = symbols('prevX prevY curX curY x0') p1 = Matrix([prevX, prevY, 1]) p2 = Matrix([curX, curY, 1]) l1 = p1.cross(p2) h1 = Matrix([x0, 0, 1]) h2 = Matrix([x0, 1, 1]) l2 = h1.cross(h2) a = l1.cross(l2) pprint(a / a[2])