topic Re: How to calculate co-ordinates of these points in .NET Forum

How to calculate co-ordinates of these points

parikhnidi — Tue, 07 Sep 2021 18:19:26 GMT

Hi All,

Can anyone help in calculating the co-ordinates of points P1 and P2 as shown in the attached image. The circles with RAD1 and RAD2 are tangent to each other and the circle with RAD2 is always inside the circle with RAD1. The ANGLE is symmetrically divided.

Thanks,

Nimish

Re: How to calculate co-ordinates of these points

norman.yuan — Fri, 10 Sep 2021 14:54:24 GMT

It is certainly doable with high school math knowledge, but I have to admit the calculation is a bit challenging after leaving school (high school, or university) for so long. But fortunately, with AutoCAD's rich geometric APIs, we can do it much easier without being math master: looking into Autodesk.AutoCAD.Geometry namespace, you could use IntersectWith method from CircularArc2d/Line2d(LineSegment2d) to find out P1 and P2 as intersecting points.

Re: How to calculate co-ordinates of these points

parikhnidi — Fri, 10 Sep 2021 16:22:13 GMT

Thanks Norman.

For sure, I will need to calculate through IntersectWith method. I was trying to crack this through using trigonometry.

Nimish