public void TessellatorProducesCorrectVertexNormals()
{
Name = nameof(TessellatorProducesCorrectVertexNormals);
var shape = new Polygon((4.96243, 50.58403), (5.78472, 50.58403), (5.78472, 65.83403), (-7.05727, 65.83403), (-7.05727, 50.57403), (4.96243, 50.57403));
var geoElem = new GeometricElement(representation: new Extrude(shape, 1, Vector3.ZAxis, false));
Model.AddElement(geoElem);
var solid = geoElem.GetFinalCsgFromSolids();
var mgb = new MockGraphicsBuffer();
var arrows = new ModelArrows();
Tessellation.Tessellate(new Csg.Solid[] { solid }.Select(s => new CsgTessellationTargetProvider(solid)), mgb);
for (int i = 0; i < mgb.Indices.Count; i += 3)
{
var a = mgb.Indices[i];
var b = mgb.Indices[i + 1];
var c = mgb.Indices[i + 2];
var verts = new[] { mgb.Vertices[a], mgb.Vertices[b], mgb.Vertices[c] };
verts.ToList().ForEach((v) =>
{
arrows.Vectors.Add((v.position, v.normal, 0.2, Colors.Blue));
});
var triangle = new Polygon(verts.Select(v => v.position).ToList());
var normal = verts[0].normal;
Assert.True(triangle.Normal().Dot(normal.Unitized()) > 0, "The vertex normals are pointing in the opposite direction as their triangles' winding should suggest");
Model.AddElement(triangle.TransformedPolygon(new Transform(normal * 0.2)));
}
Model.AddElement(arrows);
}
public void UnionWithProblematicPolygons()
{
var profile1 = JsonConvert.DeserializeObject <Polygon>(
@"{
""Vertices"": [
{
""X"": -348.82036858497275,
""Y"": 246.02759072077453,
""Z"": 30.25
},
{
""X"": -348.85572392403208,
""Y"": 246.06294605983385,
""Z"": 30.25
},
{
""X"": -350.60244308413706,
""Y"": 244.31622689972886,
""Z"": 30.25
},
{
""X"": -350.56708774507774,
""Y"": 244.28087156066954,
""Z"": 30.25
},
{
""X"": -350.53173240601842,
""Y"": 244.24551622161022,
""Z"": 30.25
},
{
""X"": -348.78501324591343,
""Y"": 245.9922353817152,
""Z"": 30.25
}
]}
");
var profile2 = JsonConvert.DeserializeObject <Polygon>(
@"{
""Vertices"": [
{
""X"": -350.56708774507774,
""Y"": 244.28087156066954,
""Z"": 30.25
},
{
""X"": -350.51708774507773,
""Y"": 244.28087156066954,
""Z"": 30.25
},
{
""X"": -350.51708774507773,
""Y"": 247.77430988087954,
""Z"": 30.25
},
{
""X"": -350.56708774507774,
""Y"": 247.77430988087954,
""Z"": 30.25
},
{
""X"": -350.61708774507775,
""Y"": 247.77430988087954,
""Z"": 30.25
},
{
""X"": -350.61708774507775,
""Y"": 244.28087156066954,
""Z"": 30.25
}
]}"
);
var element = new GeometricElement();
element.Representation = new Representation(new List <SolidOperation> {
new Extrude(profile1, 1, Vector3.ZAxis, false),
new Extrude(profile2, 1, Vector3.ZAxis, false)
});
element.UpdateRepresentations();
var solid = element.GetFinalCsgFromSolids();
}