Parallel Lines coordinate

fsl88 — Sat, 21 May 2022 10:47:42 GMT

I there a code for knowing the 2 coordinates as shown below. x1,y1 and x2,y2 are known coordinates, offset distance is also known. The two lines are equal in length. Thanks.

Re: Parallel Lines coordinate

_gile — Sat, 21 May 2022 15:11:26 GMT

Hi,

You can use some simple vector calculus using APIs from the Geometry namespace (GetVectorTo, GetPerpendicularVector, GetNormal).

var pt1 = new Point2d(x1, y1); var pt2 = new Point2d(x2, y2); // Get the vector from pt1 to pt2 var direction = pt1.GetVectorTo(pt2); // Get the perpendiclar vector to direction with a length of 'offsetDistance' var perpendicularVector = direction.GetPerpendicularVector().GetNormal() * offsetDistance; // Offset pt1 and pt2 (substracting the vector to offset to right) var offsetPt1 = pt1 - perpendicularVector; var offsetPt2 = pt2 - perpendicularVector;

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Parallel Lines coordinate

Re: Parallel Lines coordinate