INTERSECT

INTERSECT Ax, Ay, Bx, By, Cx, Cy, Dx, Dy, BYREF type, BYREF Rx, BYREF Ry

Calculates the intersection of two line segments AB and CD given by the point Ax, Ay, Bx, By and Cx, Cy, Dx, Dy.

Returns:

Rx, Ry = coordinates of crossing point.
type = cross-type:
- 0: No cross (R = external cross)
- 1: One cross
- 2: Parallel
- 3: Parallel (many crosses)
- 4: The cross is one of the line segments edges.

Example

' Line segment AB
Ax = 50
Ay = 50
Bx = 100
By = 100

' Line segment CD
Cx = 100
Cy =  50
Dx =  50
Dy = 100

intersect Ax, Ay, Bx, By, Cx, Cy, Dx, Dy, type, Rx, Ry

print "Intersection at x = "; Rx; ", y = "; Ry

' Draw lines and a circle at the calculated crossing point
line Ax, Ay, Bx, By color 5
line Cx, Cy, Dx, Dy color 8
circle Rx,Ry, 5 color 12

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ABS ABSMAX ABSMIN ACOS ACOSH ACOT ACOTH ACSC ACSCH ASEC ASECH ASIN ASINH ATAN ATAN2 ATANH ATN CEIL COS COSH COT COTH CSC CSCH DEG DERIV DETERM DIFFEQN EXP EXPRSEQ FIX FLOOR FRAC INT INTERSECT INVERSE LINEQN LOG LOG10 M3APPLY M3IDENT M3ROTATE M3SCALE M3TRANS MAX MIN POLYAREA POLYCENT POLYEXT POW PTDISTLN PTDISTSEG PTSIGN RAD RND ROOT ROUND SEC SECH SEGCOS SEGLEN SEGSIN SEQ SGN SIN SINH SQR STATMEAN STATMEANDEV STATMEDIAN STATSPREADP STATSPREADS STATSTD SUM SUMSQ TAN TANH TRANSPOSE