Mathematically I don't think so, but I may be misunderstanding you. If you mean construct a line tangent to a circle given a point on the line that is not on the circle, then no there isn't because that gives multiple solutions. For example, take any two tangent lines with different slopes. In 2-d space these lines will intersect and hence give a point and a circle that corresponds to at least two tangent lines. Or even easier inscribe a circle in a square. Any two perpendicular lines on the square intersect at a vertex of the square and the two perpendicular lines both correspond to a point (the vertex) and a circle.
Mike On Fri, May 28, 2010 at 7:13 AM, Matteo Boscolo <[email protected] > wrote: > Hi all, > > I'm New using in sympy I would like to use sympy.geometry for my > pythoncad Application. > > There are any way to find a tangent line of a circle or ellipse given > as constraint an external point ?.. somthing like > Line=TangentLine(Circle,Point) where point is an external entity of > the circle ? > > I found the Circle.tangent_line(Point) .. but this means that i have > to know the tangent point .. > > There are simple way to do such a operation ? > > Regards > Matteo > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected] <sympy%[email protected]>. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
