Is there a special function to compute the length between one vertex and an interior point of a polygon ?

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Susan Arnold 2016-3-1

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编辑： Matt J 2016-3-1

采纳的回答： Walter Roberson

I am looking for a built-in Matlab function to compute one vertex and an interior point on a Polygon ?

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Jan 2016-3-1

I do not understand the question. The distance between q and A seems to be trivial. But what does "find the area of triangles generated because the point q" mean?

Matt J 2016-3-1

For example I have a triangle with three vertices A,B,C and a point inside q. I need a function which is capable of find the length between the point q and A for example

You should modify the title of your post since the distance between q and A is not a "length between specific vertices". It is the distance between one vertex and an interior point.

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Walter Roberson 2016-3-1

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http://www.mathopenref.com/coordtrianglearea.html

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Matt J 2016-3-1

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You can use delaunayTriangulation to partition the polygon+q into triangles. Use the ConnectivityList property to find the vertices of the sub-triangles and then their area.

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Susan Arnold 2016-3-1

I meant, how can I recognize this point or how can I extract this point from the DT ?!!

Matt J 2016-3-1

编辑：Matt J 2016-3-1

The link I gave you explains the book-keeping of points in the triangulation. In particular, if you enter the query point as row P(j,:) when you build the DT object, then this point will be given a vertex ID of j, as explained here. The other methods and properties of DT use this ID to identify points in the triangulation.

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