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Box3D::Line::Line ( Geom::Point const &  start,
Geom::Point const &  vec,
bool  is_endpoint = true 

Draw a line beginning at 'start'. If is_endpoint is true, use 'vec' as the endpoint of the segment. Otherwise interpret it as the direction of the line. FIXME: Think of a better way to distinguish between the two constructors of lines.

Definition at line 29 of file line-geometry.cpp.

References Geom::Point::ccw().

    pt = start;
    if (is_endpoint)
        v_dir = vec - start;
      v_dir = vec;
    normal = v_dir.ccw();
    d0 = Geom::dot(normal, pt);

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