ocr: Stupid MathCAD requires that we declare variables as constants. uF0 q=0 Zp0 Zq0 C:FO V Xp-0 XqF0 AFO ZF0 p 0 Yp 0 Yq0 BFO Ok theory time. Let (u,) be the coordinates on the projection plane, (p.4) the coordinates on the original plane, (Xp,Yp,Zp) and (Xq,Yq,Zq) the two vectors defining the plane, (A,B,C) the origin ofth plane and the projection X=zu, y=ZV. Then, the intersection of the projection ray and the plane in th plane coordinate system (p.q) in function of the projection plane coordinate system (u,) is: pZptq2gTC zu"p.XptqXqTA 942784704949F94TA Equation A pYptq/qtB pZptqzgtOpYptaYgtB E ...
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