PR-Tf3 Perspective Reflection of P1 in P2
Given two collinear points in a fixed order, P1 and P2, together with the vanishing point V of the perspective scale under consideration, these points determine a perspective scale from which the perspective reflection can be derived.
PR-Tf3 is the transformation that maps the ordered pair (P1,P2), together with the vanishing point V, to the Perspective Reflection R12 of P1 around P2.
Construction
The following figure illustrates the construction.
Properties
- R12 is the Harmonic Conjugate of P1 wrt (P2,V)
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