// append "disc" verts/tris between vEnd1 and vEnd2
protected void append_2d_disc_segment(int iCenter, int iEnd1, int iEnd2, int nSteps, bool bCycle, ref int vtx_counter, ref int tri_counter, int groupid = -1, double force_r = 0)
{
Vector3D c = vertices[iCenter];
Vector3D e0 = vertices[iEnd1];
Vector3D e1 = vertices[iEnd2];
Vector3D v0 = (e0 - c);
double r0 = v0.Normalize();
if (force_r > 0)
{
r0 = force_r;
}
double tStart = Math.Atan2(v0.z, v0.x);
Vector3D v1 = (e1 - c);
double r1 = v1.Normalize();
if (force_r > 0)
{
r1 = force_r;
}
double tEnd = Math.Atan2(v1.z, v1.x);
// fix angles to handle sign. **THIS ONLY WORKS IF WE ARE GOING CCW!!**
if (tStart < 0)
{
tStart += math.MathUtil.TwoPI;
}
if (tEnd < 0)
{
tEnd += math.MathUtil.TwoPI;
}
if (tEnd < tStart)
{
tEnd += math.MathUtil.TwoPI;
}
int iPrev = iEnd1;
for (int i = 0; i < nSteps; ++i)
{
double t = (double)(i + 1) / (double)(nSteps + 1);
double angle = (1 - t) * tStart + (t) * tEnd;
Vector3D pos = c + new Vector3D(r0 * Math.Cos(angle), 0, r1 * Math.Sin(angle));
vertices.Set(vtx_counter, pos.x, pos.y, pos.z);
if (groupid >= 0)
{
groups[tri_counter] = groupid;
}
triangles.Set(tri_counter++, iCenter, iPrev, vtx_counter, bCycle);
iPrev = vtx_counter++;
}
if (groupid >= 0)
{
groups[tri_counter] = groupid;
}
triangles.Set(tri_counter++, iCenter, iPrev, iEnd2, bCycle);
}
VectorArray3d restore_list3d(String valueString)
{
string[] values = valueString.Split(' ');
int N = values.Length / 3;
VectorArray3d v = new VectorArray3d(N);
for (int i = 0; i < N; ++i)
{
double x = 0, y = 0, z = 0;
double.TryParse(values[3 * i], out x);
double.TryParse(values[3 * i + 1], out y);
double.TryParse(values[3 * i + 2], out z);
v.Set(i, x, y, z);
}
return(v);
}
VectorArray3d restore_list3d_binary(String valueString)
{
char[] str = valueString.ToCharArray();
byte[] buffer = Convert.FromBase64CharArray(str, 0, str.Length);
int sz = sizeof(double);
int Nvals = buffer.Length / sz;
int Nvecs = Nvals / 3;
VectorArray3d v = new VectorArray3d(Nvecs);
for (int i = 0; i < Nvecs; i++)
{
double x = BitConverter.ToDouble(buffer, (3 * i) * sz);
double y = BitConverter.ToDouble(buffer, (3 * i + 1) * sz);
double z = BitConverter.ToDouble(buffer, (3 * i + 2) * sz);
v.Set(i, x, y, z);
}
return(v);
}
public virtual SimpleMesh RestoreSimpleMesh(TypedAttribSet attributes, bool bSwapRightLeft)
{
bool bBinary = true;
TypedAttribSet meshAttr = find_struct(attributes, IOStrings.BinaryMeshStruct);
if (meshAttr == null)
{
meshAttr = find_struct(attributes, IOStrings.AsciiMeshStruct);
bBinary = false;
}
if (meshAttr == null)
{
throw new Exception("SOFactory.RestoreSimpleMesh: Mesh ascii/binary struct not found!");
}
VectorArray3d v = null;
VectorArray3i t = null;
VectorArray3f n = null, c = null;
VectorArray2f uv = null;
if (bBinary)
{
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshVertices3Binary))
{
v = meshAttr[IOStrings.AMeshVertices3Binary] as VectorArray3d;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshTrianglesBinary))
{
t = meshAttr[IOStrings.AMeshTrianglesBinary] as VectorArray3i;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshNormals3Binary))
{
n = meshAttr[IOStrings.AMeshNormals3Binary] as VectorArray3f;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshColors3Binary))
{
c = meshAttr[IOStrings.AMeshColors3Binary] as VectorArray3f;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshUVs2Binary))
{
uv = meshAttr[IOStrings.AMeshUVs2Binary] as VectorArray2f;
}
}
else
{
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshVertices3))
{
v = meshAttr[IOStrings.AMeshVertices3] as VectorArray3d;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshTriangles))
{
t = meshAttr[IOStrings.AMeshTriangles] as VectorArray3i;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshNormals3))
{
n = meshAttr[IOStrings.AMeshNormals3] as VectorArray3f;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshColors3))
{
c = meshAttr[IOStrings.AMeshColors3] as VectorArray3f;
}
if (check_key_or_debug_print(meshAttr, IOStrings.AMeshUVs2))
{
uv = meshAttr[IOStrings.AMeshUVs2] as VectorArray2f;
}
}
if (v == null || t == null)
{
return(null);
}
if (bSwapRightLeft)
{
int N = v.Count;
for (int i = 0; i < N; ++i)
{
Vector3d vv = v[i];
v.Set(i, -vv.x, vv.y, -vv.z);
}
if (n != null && n.Count == N)
{
for (int i = 0; i < N; ++i)
{
Vector3f nn = n[i];
n.Set(i, -nn.x, nn.y, -nn.z);
}
}
}
SimpleMesh m = new SimpleMesh();
m.Initialize(v, t, n, c, uv);
return(m);
}