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Roof facing facet.


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Thank you @JohnK

I now understood how the information is stored internally. The below function get the details.

var getFacetTrianglesOfMesh = function (mesh) {
            var indices = mesh.getIndices();
            var positions = mesh.getVerticesData(BABYLON.VertexBuffer.PositionKind);

            var nbFaces = indices.length / 3;

            var triangles = [];
            for (var i = 0; i < nbFaces; i++) {
                var triangle = [];
                for (var j = 0; j < 3; j++) {
                    var ind = (i * 3) + j;
                    var point = new BABYLON.Vector3(positions[ind], positions[ind + 1], positions[ind + 2]);


            return triangle;

Now I need to do face sampling. I need to divide each facet into a grid of equal sized cells. 

Any clue how to do this? Gone thru this article but could not understand. https://chrischoy.github.io/research/barycentric-coordinate-for-mesh-sampling/


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