Vertices Orden

[ThinkingInXyZ]

Hello,

First of all, Great work! I think you have done very hard work with your CSG library.

Now, I am trying to create a Viewer on SharpGL to visualize the SOLIDS. So I am trying to convert your polygons to be drawn by SharopGL however I dont get any good results at all. I tried two main methods, but non of them worked well. And basically it is because, I dont know exactly the order of the vertices.

To illustrate my situation, I created the following simple case:

float radius_gear  = 10;
float radius_teeth = 1;
Solid gear   = Solids.Cylinder(radius_gear, 0.6, true);
Solid tooth = Solids.Cylinder(radius_teeth, 1.2, true).Translate(radius_gear, 0, 0);
Solid final   = Solids.Difference(gear, tooth);

Approach 1 Simple Straight forward approach

// Get the Vertices from the Solid
var verts = csg.
                  Polygons.
                   SelectMany(x => x.Vertices).
                    Select(ToSCNVector3).
                    ToArray();
.
.
.
// Draw the Mesh based on the grabbed vertices
gl.Begin(OpenGL.GL_TRIANGLE_STRIP);  // I tried different methods here

for (int i = 0; i < verts .Length; i += 3)
    gl.Vertex((float)verts [i].X, (float)verts [i].Y, (float)verts [i].Z);  
            
gl.End();

Approach 2 Converting Polygon to Polygon in Quads

        private void DrawSolid(OpenGL gl, Solid pSolid)
        {
            foreach (var poly in pSolid.Polygons)
            {
                gl.Begin(OpenGL.GL_QUADS);
                for(int i=0; i < poly.Vertices.Count; i++)
                    gl.Vertex((float)poly.Vertices[i].Pos.X, (float)poly.Vertices[i].Pos.Y, (float)poly.Vertices[i].Pos.Z);  
                gl.End();    
            }
        }

Please, could you tell me how the vertices are organized? Or can you point me what i am doing wrong?

Thank you very much in advance!!

Kind Regards,
Ting

[ManIkWeet]

The vertices are defined as a 2d polygon on a 3d plane (like the .STL file format)