I cannot immediately see whether or not your triangle data set will help. Are the triangles all supposed to be in the same contour band, or are those just surface polygons which could be all over, height-wise?

No. They are just form the mesh via which the "heights" were calculated (FEM). The mesh is generated prior to the heights being calculated, so there's no immediate help there.

That said, if I start at a triangle on the periphery, check each of its node for the highest; then check each of the nodes of all the other triangle that contain that highest point; and so on, eventually it ought to get me to the highest point. But nah, .... I can find that by in a single pass of the nodes data.

So, start at the highest point, follow each of edges of each of the triangles that contain that point, recursively ... to what end? Where am I going?...

Thanks for all the links. Looks like I've a lot of reading to do.

And no, this isn't about plotting; its about calculating and collating all these damned angles.

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In reply to Re^2: Contour mapping? by BrowserUk
in thread Contour mapping? by BrowserUk

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