Xabier Otano

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  1. Line & Circle Intersetcion

    Hi there, i am having so much troubles finding C++ code that tell me what is the point of intersection of a circle and a line that grows from its center.   I have a circle with center C and a point A  (is given by the touch of a person on the screen)     The line between C-A intersect with the circle in some place in the circle Z, i want to know how to calculate this Z(x,y) and if it possible a c++ solution will be awesome. Has someone some useful code i can try? SO many thanks mates   I have reades this web but when i translate the code i got some strange values , dunno why-   http://mathworld.wolfram.com/Circle-LineIntersection.html   As i said the only important point is the one which is isnide the circle AND is between the center C and the touch point A.