private static PartialModel GenerateCircleModel()
{
float stepAngle = (float)Math.PI * 2f / 32f;
var indices = new List <int>();
var vertices = new List <VertVN>();
//Cone vertices and indices
for (int i = 0; i < 32; i++)
{
var pt = new Vector3((float)Math.Cos(stepAngle * i), 0f, (float)Math.Sin(stepAngle * i)) * 0.5f;
vertices.Add(new VertVN(pt, pt.Normalized()));
indices.Add((i + 1) % 32); indices.Add(i); //indices.Add(32);
}
int curIdx = GeneralMeshBuffer.IndexCount;
int curVert = GeneralMeshBuffer.VertexCount;
GeneralMeshBuffer.AppendVertices(vertices);
GeneralMeshBuffer.AppendIndices(indices);
int idxCount = GeneralMeshBuffer.IndexCount - curIdx;
var vertexPositions = vertices.Select(x => x.Position).ToList();
var bounding = BBox.FromVertices(vertexPositions);
var model = new PartialModel(GeneralMeshBuffer, curIdx, curVert, idxCount, OpenTK.Graphics.OpenGL.PrimitiveType.Lines);
model.BoundingBox = bounding;
model.Vertices = vertexPositions;
LoadedModels.Add(model);
return(model);
}
private static PartialModel AppendPartialMesh(Assimp.Mesh mesh)
{
var primitiveType = OpenTK.Graphics.OpenGL.PrimitiveType.Triangles;
if (mesh.Faces[0].IndexCount == 4)
{
primitiveType = OpenTK.Graphics.OpenGL.PrimitiveType.Quads;
}
int curIdx = GeneralMeshBuffer.IndexCount;
int curVert = GeneralMeshBuffer.VertexCount;
GeneralMeshBuffer.LoadModelVertices(mesh, true);
int idxCount = GeneralMeshBuffer.IndexCount - curIdx;
var vertices = GeneralMeshBuffer.GetVertices().Skip(curVert);
var vertexPositions = vertices.Select(x => x.Position).ToList();
var bounding = BBox.FromVertices(vertexPositions);
var model = new PartialModel(GeneralMeshBuffer, curIdx, curVert, idxCount, primitiveType);
model.BoundingBox = bounding;
model.Vertices = vertexPositions;
LoadedModels.Add(model);
//model.LoadVertices();
//model.CalculateBoundingBox();
return(model);
}
