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intersect(((sK/home/packages/reportlab/reportlab_2_0/reportlab/graphics/charts/utils3d.pys_Segment|s  cCsYt|i|i|i|i|i|if|i|i|i|i|i|ifƒSdS(N( scmpsasx0sx1sy0sy1sssisb(sasb((sK/home/packages/reportlab/reportlab_2_0/reportlab/graphics/charts/utils3d.pys_segCmpณsic CsUg} | i}xชtt|ƒƒD]–}||} | oq"nt| ƒ}|djoq"nxTtd|ƒD]C}t |||ƒ}|it |i ƒ|jo||ƒqqqqWq"W| itƒg}t| ƒ}xetd|dƒD]P}| |}x=t|d|ƒD](}|i| ||ƒdjoPqqWq๏W|iƒ|SdS(sV data is a sequence of series each series is a list of (x,y) coordinates where x & y are ints or floats find_intersections returns a sequence of 4-tuples i, j, x, y where i is a data index j is an insertion position for data[i] and x, y are coordinates of an intersection of series data[i] with some other series. If correctly implemented we get all such intersections. We don't count endpoint intersections and consider parallel lines as non intersecting (even when coincident). 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