designengrlab / tvgl Goto Github PK

Hi,

I am new user of TVGL.
I am very interested in this rich library, however I am interested in particular subject,

Is it possible to get very simple example how to create 3d polygon that has faces with more than 3 or 4 vertices?

Thank you

http://designengrlab.github.io/TVGL/ gives a 404

Hello,

I've tried to generate a 2D triangulation with this library, but I can't seem to figure out how to use TVGL.TriangulatePolygon.Run2D:

var points = new[]
{
	new List<TVGL.Point>
	{
		new TVGL.Point(1, 1),
		new TVGL.Point(1, 5),
		new TVGL.Point(5, 5),
		new TVGL.Point(5, 1)
	}
};

var isPositive = vertices.Select(vl => false).ToArray();
var orderedPoints = TVGL.TriangulatePolygon.OrderLoops2D(points, ref isPositive).Select(l => l.ToArray()).ToArray();

List<List<int>> groupsOfLoops;
var triangles = TVGL.TriangulatePolygon.Run2D(orderedPoints,
	out groupsOfLoops,
	ref isPositive);

So, this is my attempt to triangulate a rectangle, but Run2D always throws an exception with the message "Triangulation failed after 3 attempts."

Is there anything I'm doing wrong?

Thanks in advance!

P.S.: For what it's worth, I did manage to get a valid triangulation of concave polygons with holes from the TVGL.TriangulatePolygon.Run method. The only times I'm getting the "Triangulation failed after 3 attempts." message from Run is when the polygon has intersecting edges, or if I pass in a "polygon" with less than three vertices (none of which will happen in my actual use case).

Can we add a transfer method to the Tessellated class in order to simply move the solid to a new location?

Thanks for this great project. It works great for my application, but I'd like to know any improvement is possible to make slice the model fast? I tried different STL files from thingiverse.com and it takes about 70 sec to load a model with 1.3M faces and another 60 sec to get a single slice. I hope I'd contribute this project, but I'm still learning C#.

Thanks!

https://michaelscodingspot.com/avoid-gc-pressure/

Hello!
I'm new here. I have *.stl file with some model. I need to find all the points inside this model.
I found a question that refers to MiscFunctions.cs file.
Firstly, I read all the vertices from file and create convex hull.

var result = StlHelper.ReadFile(stlPath); // List<Vertex>
var hull = ConvexHull.Create(result);
var tessellatedSolid = new TessellatedSolid(...); // <---

Later I try to use MiscFunctions.IsPointInsideSolid method that required TessellatedSolid parameter.
Is it right? Is there an example of checking whether a point is inside a 3d polygon?