public void AppendTriangles(IndexArray3i t, int[] groups = null)
{
Triangles.Add(t.array);
if (HasTriangleGroups)
{
if (groups != null)
{
FaceGroups.Add(groups);
}
else
{
FaceGroups.Add(0, t.Count);
}
}
}
public override void Generate()
{
vertices = new VectorArray3d((NoSharedVertices) ? (4 * 6) : 8);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
triangles = new IndexArray3i(2 * 6);
if (NoSharedVertices == false)
{
for (int i = 0; i < 8; ++i)
{
vertices[i] = Box.Corner(i);
normals[i] = (Vector3F)(vertices[i] - Box.Center[i]).Normalized;
uv[i] = Vector2F.Zero; // what to do for UVs in this case ?!?
}
int ti = 0;
for (int fi = 0; fi < 6; ++fi)
{
triangles.Set(ti++,
gIndices.BoxFaces[fi, 0], gIndices.BoxFaces[fi, 1], gIndices.BoxFaces[fi, 2], Clockwise);
triangles.Set(ti++,
gIndices.BoxFaces[fi, 0], gIndices.BoxFaces[fi, 2], gIndices.BoxFaces[fi, 3], Clockwise);
}
}
else
{
int ti = 0;
int vi = 0;
Vector2F[] square_uv = new Vector2F[4] {
Vector2F.Zero, new Vector2F(1, 0), new Vector2F(1, 1), new Vector2F(0, 1)
};
for (int fi = 0; fi < 6; ++fi)
{
int v0 = vi++; vi += 3;
int ni = gIndices.BoxFaceNormals[fi];
Vector3F n = (Vector3F)(Math.Sign(ni) * Box.Axis(Math.Abs(ni) - 1));
for (int j = 0; j < 4; ++j)
{
vertices[v0 + j] = Box.Corner(gIndices.BoxFaces[fi, j]);
normals[v0 + j] = n;
uv[v0 + j] = square_uv[j];
}
triangles.Set(ti++, v0, v0 + 1, v0 + 2, Clockwise);
triangles.Set(ti++, v0, v0 + 2, v0 + 3, Clockwise);
}
}
}
private SimpleMesh ToMesh()
{
int vcount = GetVertexCount();
MdalVertexIterator vi = Mdal.MDAL_M_vertexIterator(this);
VectorArray3d v = vi.GetVertexes(vcount);
bool hasColors;
VectorArray3f c = GetColors(vcount, out hasColors);
SimpleMesh mesh = new SimpleMesh();
mesh.AppendVertices(v, null, c);
int fcount = GetFaceCount();
MdalFaceIterator fi = Mdal.MDAL_M_faceIterator(this);
IndexArray3i tri = fi.GetTris(fcount, Mdal.MDAL_M_faceVerticesMaximumCount(this));
mesh.AppendTriangles(tri);
return(mesh);
}
void Complete(IntermediateMeshGenerator intermediate)
{
vertices = new VectorArray3d(intermediate.Vertices.Count);
normals = new VectorArray3f(intermediate.Normals.Count);
triangles = new IndexArray3i(intermediate.Triangles.Count);
for (int idx = 0; idx < intermediate.Vertices.Count; idx++)
{
vertices[idx] = intermediate.Vertices[idx];
}
for (int idx = 0; idx < intermediate.Normals.Count; idx++)
{
normals[idx] = intermediate.Normals[idx];
}
for (int idx = 0; idx < intermediate.Triangles.Count; idx++)
{
triangles[idx] = intermediate.Triangles[idx];
}
}
override public void Generate()
{
bool bClosed = ((EndAngleDeg - StartAngleDeg) > 359.99f);
int nRingSize = (NoSharedVertices && bClosed) ? Slices + 1 : Slices;
vertices = new VectorArray3d(2 * nRingSize);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
triangles = new IndexArray3i(2 * Slices);
float fTotalRange = (EndAngleDeg - StartAngleDeg) * math.MathUtil.Deg2Radf;
float fStartRad = StartAngleDeg * math.MathUtil.Deg2Radf;
float fDelta = (bClosed) ? fTotalRange / Slices : fTotalRange / (Slices - 1);
for (int k = 0; k < nRingSize; ++k)
{
float angle = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
vertices[k] = new Vector3D(BaseRadius * cosa, 0, BaseRadius * sina);
vertices[nRingSize + k] = new Vector3D(TopRadius * cosa, Height, TopRadius * sina);
float t = (float)k / (float)Slices;
uv[k] = new Vector2F(t, 0.0f);
uv[nRingSize + k] = new Vector2F(t, 1.0f);
Vector3F n = new Vector3F((float)cosa, 0, (float)sina);
n.Normalize();
normals[k] = normals[nRingSize + k] = n;
}
int ti = 0;
for (int k = 0; k < nRingSize - 1; ++k)
{
triangles.Set(ti++, k, k + 1, nRingSize + k + 1, Clockwise);
triangles.Set(ti++, k, nRingSize + k + 1, nRingSize + k, Clockwise);
}
if (bClosed && NoSharedVertices == false) // close disc if we went all the way
{
triangles.Set(ti++, nRingSize - 1, 0, nRingSize, Clockwise);
triangles.Set(ti++, nRingSize - 1, nRingSize, 2 * nRingSize - 1, Clockwise);
}
}
override public void Generate()
{
vertices = new VectorArray3d(Slices + 1);
uv = new VectorArray2f(Slices + 1);
normals = new VectorArray3f(Slices + 1);
triangles = new IndexArray3i(Slices);
int vi = 0;
vertices[vi] = Vector3D.Zero;
uv[vi] = new Vector2F(0.5f, 0.5f);
normals[vi] = Vector3F.AxisY;
vi++;
bool bFullDisc = ((EndAngleDeg - StartAngleDeg) > 359.99f);
float fTotalRange = (EndAngleDeg - StartAngleDeg) * math.MathUtil.Deg2Radf;
float fStartRad = StartAngleDeg * math.MathUtil.Deg2Radf;
float fDelta = (bFullDisc) ? fTotalRange / Slices : fTotalRange / (Slices - 1);
for (int k = 0; k < Slices; ++k)
{
float a = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[vi] = new Vector3D(Radius * cosa, 0, Radius * sina);
uv[vi] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[vi] = Vector3F.AxisY;
vi++;
}
int ti = 0;
for (int k = 1; k < Slices; ++k)
{
triangles.Set(ti++, k, 0, k + 1, Clockwise);
}
if (bFullDisc) // close disc if we went all the way
{
triangles.Set(ti++, Slices, 0, 1, Clockwise);
}
}
override public void Generate()
{
vertices = new VectorArray3d(2 * Slices);
uv = new VectorArray2f(2 * Slices);
normals = new VectorArray3f(2 * Slices);
triangles = new IndexArray3i(2 * Slices);
bool bFullDisc = ((EndAngleDeg - StartAngleDeg) > 359.99f);
float fTotalRange = (EndAngleDeg - StartAngleDeg) * math.MathUtil.Deg2Radf;
float fStartRad = StartAngleDeg * math.MathUtil.Deg2Radf;
float fDelta = (bFullDisc) ? fTotalRange / Slices : fTotalRange / (Slices - 1);
float fUVRatio = InnerRadius / OuterRadius;
for (int k = 0; k < Slices; ++k)
{
float angle = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
vertices[k] = new Vector3D(InnerRadius * cosa, 0, InnerRadius * sina);
vertices[Slices + k] = new Vector3D(OuterRadius * cosa, 0, OuterRadius * sina);
uv[k] = new Vector2F(0.5f * (1.0f + fUVRatio * cosa), 0.5f * (1.0f + fUVRatio * sina));
uv[Slices + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1.0f + sina));
normals[k] = normals[Slices + k] = Vector3F.AxisY;
}
int ti = 0;
for (int k = 0; k < Slices - 1; ++k)
{
triangles.Set(ti++, k, k + 1, Slices + k + 1, Clockwise);
triangles.Set(ti++, k, Slices + k + 1, Slices + k, Clockwise);
}
if (bFullDisc) // close disc if we went all the way
{
triangles.Set(ti++, Slices - 1, 0, Slices, Clockwise);
triangles.Set(ti++, Slices - 1, Slices, 2 * Slices - 1, Clockwise);
}
}
override public void Generate()
{
bool bClosed = ((EndAngleDeg - StartAngleDeg) > 359.99f);
int nRingSize = (NoSharedVertices && bClosed) ? Slices + 1 : Slices;
int nCapVertices = (NoSharedVertices) ? Slices + 1 : 1;
int nFaceVertices = (NoSharedVertices && bClosed == false) ? 8 : 0;
vertices = new VectorArray3d(2 * nRingSize + 2 * nCapVertices + nFaceVertices);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
int nCylTris = 2 * Slices;
int nCapTris = 2 * Slices;
int nFaceTris = (bClosed == false) ? 4 : 0;
triangles = new IndexArray3i(nCylTris + nCapTris + nFaceTris);
groups = new int[triangles.Count];
float fTotalRange = (EndAngleDeg - StartAngleDeg) * math.MathUtil.Deg2Radf;
float fStartRad = StartAngleDeg * math.MathUtil.Deg2Radf;
float fDelta = (bClosed) ? fTotalRange / Slices : fTotalRange / (Slices - 1);
// generate top and bottom rings for cylinder
for (int k = 0; k < nRingSize; ++k)
{
float angle = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
vertices[k] = new Vector3D(BaseRadius * cosa, 0, BaseRadius * sina);
vertices[nRingSize + k] = new Vector3D(TopRadius * cosa, Height, TopRadius * sina);
float t = (float)k / (float)Slices;
uv[k] = new Vector2F(t, 0.0f);
uv[nRingSize + k] = new Vector2F(t, 1.0f);
Vector3F n = new Vector3F((float)cosa, 0, (float)sina);
n.Normalize();
normals[k] = normals[nRingSize + k] = n;
}
// generate cylinder panels
int ti = 0;
for (int k = 0; k < nRingSize - 1; ++k)
{
groups[ti] = 1;
triangles.Set(ti++, k, k + 1, nRingSize + k + 1, Clockwise);
groups[ti] = 1;
triangles.Set(ti++, k, nRingSize + k + 1, nRingSize + k, Clockwise);
}
if (bClosed && NoSharedVertices == false) // close disc if we went all the way
{
groups[ti] = 1;
triangles.Set(ti++, nRingSize - 1, 0, nRingSize, Clockwise);
groups[ti] = 1;
triangles.Set(ti++, nRingSize - 1, nRingSize, 2 * nRingSize - 1, Clockwise);
}
int nBottomC = 2 * nRingSize;
vertices[nBottomC] = new Vector3D(0, 0, 0);
uv[nBottomC] = new Vector2F(0.5f, 0.5f);
normals[nBottomC] = new Vector3F(0, -1, 0);
int nTopC = 2 * nRingSize + 1;
vertices[nTopC] = new Vector3D(0, Height, 0);
uv[nTopC] = new Vector2F(0.5f, 0.5f);
normals[nTopC] = new Vector3F(0, 1, 0);
if (NoSharedVertices)
{
int nStartB = 2 * nRingSize + 2;
for (int k = 0; k < Slices; ++k)
{
float a = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[nStartB + k] = new Vector3D(BaseRadius * cosa, 0, BaseRadius * sina);
uv[nStartB + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartB + k] = -Vector3F.AxisY;
}
append_disc(Slices, nBottomC, nStartB, bClosed, Clockwise, ref ti, 2);
int nStartT = 2 * nRingSize + 2 + Slices;
for (int k = 0; k < Slices; ++k)
{
float a = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[nStartT + k] = new Vector3D(TopRadius * cosa, Height, TopRadius * sina);
uv[nStartT + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartT + k] = Vector3F.AxisY;
}
append_disc(Slices, nTopC, nStartT, bClosed, !Clockwise, ref ti, 3);
// ugh this is very ugly but hard to see the pattern...
if (bClosed == false)
{
int nStartF = 2 * nRingSize + 2 + 2 * Slices;
vertices[nStartF] = vertices[nStartF + 5] = vertices[nBottomC];
vertices[nStartF + 1] = vertices[nStartF + 4] = vertices[nTopC];
vertices[nStartF + 2] = vertices[nRingSize];
vertices[nStartF + 3] = vertices[0];
vertices[nStartF + 6] = vertices[nRingSize - 1];
vertices[nStartF + 7] = vertices[2 * nRingSize - 1];
normals[nStartF] = normals[nStartF + 1] = normals[nStartF + 2] = normals[nStartF + 3]
= estimate_normal(nStartF, nStartF + 1, nStartF + 2);
normals[nStartF + 4] = normals[nStartF + 5] = normals[nStartF + 6] = normals[nStartF + 7]
= estimate_normal(nStartF + 4, nStartF + 5, nStartF + 6);
uv[nStartF] = uv[nStartF + 5] = new Vector2F(0, 0);
uv[nStartF + 1] = uv[nStartF + 4] = new Vector2F(0, 1);
uv[nStartF + 2] = uv[nStartF + 7] = new Vector2F(1, 1);
uv[nStartF + 3] = uv[nStartF + 6] = new Vector2F(1, 0);
append_rectangle(nStartF + 0, nStartF + 1, nStartF + 2, nStartF + 3, !Clockwise, ref ti, 4);
append_rectangle(nStartF + 4, nStartF + 5, nStartF + 6, nStartF + 7, !Clockwise, ref ti, 5);
}
}
else
{
append_disc(Slices, nBottomC, 0, bClosed, Clockwise, ref ti, 2);
append_disc(Slices, nTopC, nRingSize, bClosed, !Clockwise, ref ti, 3);
if (bClosed == false)
{
append_rectangle(nBottomC, 0, nRingSize, nTopC, Clockwise, ref ti, 4);
append_rectangle(nRingSize - 1, nBottomC, nTopC, 2 * nRingSize - 1, Clockwise, ref ti, 5);
}
}
}
override public void Generate()
{
int nRings = (NoSharedVertices) ? 2 * (Sections.Length - 1) : Sections.Length;
int nRingSize = (NoSharedVertices) ? Slices + 1 : Slices;
int nCapVertices = (NoSharedVertices) ? Slices + 1 : 1;
if (Capped == false)
{
nCapVertices = 0;
}
vertices = new VectorArray3d(nRings * nRingSize + 2 * nCapVertices);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
int nSpanTris = (Sections.Length - 1) * (2 * Slices);
int nCapTris = (Capped) ? 2 * Slices : 0;
triangles = new IndexArray3i(nSpanTris + nCapTris);
float fDelta = (float)((Math.PI * 2.0) / Slices);
float fYSpan = Sections.Last().SectionY - Sections[0].SectionY;
if (fYSpan == 0)
{
fYSpan = 1.0f;
}
// generate top and bottom rings for cylinder
int ri = 0;
for (int si = 0; si < Sections.Length; ++si)
{
int nStartR = ri * nRingSize;
float y = Sections[si].SectionY;
float yt = (y - Sections[0].SectionY) / fYSpan;
for (int j = 0; j < nRingSize; ++j)
{
int k = nStartR + j;
float angle = (float)j * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
vertices[k] = new Vector3D(Sections[si].Radius * cosa, y, Sections[si].Radius * sina);
float t = (float)j / (float)(Slices - 1);
uv[k] = new Vector2F(t, yt);
Vector3F n = new Vector3F((float)cosa, 0, (float)sina);
n.Normalize();
normals[k] = n;
}
ri++;
if (NoSharedVertices && si != 0 && si != Sections.Length - 1)
{
duplicate_vertex_span(nStartR, nRingSize);
ri++;
}
}
// generate triangles
int ti = 0;
ri = 0;
for (int si = 0; si < Sections.Length - 1; ++si)
{
int r0 = ri * nRingSize;
int r1 = r0 + nRingSize;
ri += (NoSharedVertices) ? 2 : 1;
for (int k = 0; k < nRingSize - 1; ++k)
{
triangles.Set(ti++, r0 + k, r0 + k + 1, r1 + k + 1, Clockwise);
triangles.Set(ti++, r0 + k, r1 + k + 1, r1 + k, Clockwise);
}
if (NoSharedVertices == false) // close disc if we went all the way
{
triangles.Set(ti++, r1 - 1, r0, r1, Clockwise);
triangles.Set(ti++, r1 - 1, r1, r1 + nRingSize - 1, Clockwise);
}
}
if (Capped)
{
// add endcap verts
var s0 = Sections[0];
var sN = Sections.Last();
int nBottomC = nRings * nRingSize;
vertices[nBottomC] = new Vector3D(0, s0.SectionY, 0);
uv[nBottomC] = new Vector2F(0.5f, 0.5f);
normals[nBottomC] = new Vector3F(0, -1, 0);
startCapCenterIndex = nBottomC;
int nTopC = nBottomC + 1;
vertices[nTopC] = new Vector3D(0, sN.SectionY, 0);
uv[nTopC] = new Vector2F(0.5f, 0.5f);
normals[nTopC] = new Vector3F(0, 1, 0);
endCapCenterIndex = nTopC;
if (NoSharedVertices)
{
int nStartB = nTopC + 1;
for (int k = 0; k < Slices; ++k)
{
float a = (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[nStartB + k] = new Vector3D(s0.Radius * cosa, s0.SectionY, s0.Radius * sina);
uv[nStartB + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartB + k] = -Vector3F.AxisY;
}
append_disc(Slices, nBottomC, nStartB, true, Clockwise, ref ti);
int nStartT = nStartB + Slices;
for (int k = 0; k < Slices; ++k)
{
float a = (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[nStartT + k] = new Vector3D(sN.Radius * cosa, sN.SectionY, sN.Radius * sina);
uv[nStartT + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartT + k] = Vector3F.AxisY;
}
append_disc(Slices, nTopC, nStartT, true, !Clockwise, ref ti);
}
else
{
append_disc(Slices, nBottomC, 0, true, Clockwise, ref ti);
append_disc(Slices, nTopC, nRingSize * (Sections.Length - 1), true, !Clockwise, ref ti);
}
}
}
override public void Generate()
{
bool bClosed = ((EndAngleDeg - StartAngleDeg) > 359.99f);
int nRingSize = (NoSharedVertices && bClosed) ? Slices + 1 : Slices;
int nTipVertices = (NoSharedVertices) ? nRingSize : 1;
int nCapVertices = (NoSharedVertices) ? Slices + 1 : 1;
int nFaceVertices = (NoSharedVertices && bClosed == false) ? 6 : 0;
vertices = new VectorArray3d(nRingSize + nTipVertices + nCapVertices + nFaceVertices);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
int nConeTris = (NoSharedVertices) ? 2 * Slices : Slices;
int nCapTris = Slices;
int nFaceTris = (bClosed == false) ? 2 : 0;
triangles = new IndexArray3i(nConeTris + nCapTris + nFaceTris);
float fTotalRange = (EndAngleDeg - StartAngleDeg) * math.MathUtil.Deg2Radf;
float fStartRad = StartAngleDeg * math.MathUtil.Deg2Radf;
float fDelta = (bClosed) ? fTotalRange / Slices : fTotalRange / (Slices - 1);
// generate rings
for (int k = 0; k < nRingSize; ++k)
{
float angle = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
vertices[k] = new Vector3D(BaseRadius * cosa, 0, BaseRadius * sina);
uv[k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
Vector3F n = new Vector3F(cosa * Height, BaseRadius / Height, sina * Height);
n.Normalize();
normals[k] = n;
if (NoSharedVertices)
{
vertices[nRingSize + k] = new Vector3D(0, Height, 0);
uv[nRingSize + k] = new Vector2F(0.5f, 0.5f);
normals[nRingSize + k] = n;
}
}
if (NoSharedVertices == false)
{
vertices[nRingSize] = new Vector3D(0, Height, 0);
normals[nRingSize] = Vector3F.AxisY;
uv[nRingSize] = new Vector2F(0.5f, 0.5f);
}
// generate cylinder panels
int ti = 0;
if (NoSharedVertices)
{
for (int k = 0; k < nRingSize - 1; ++k)
{
triangles.Set(ti++, k, k + 1, nRingSize + k + 1, Clockwise);
triangles.Set(ti++, k, nRingSize + k + 1, nRingSize + k, Clockwise);
}
}
else
{
append_disc(Slices, nRingSize, 0, bClosed, !Clockwise, ref ti);
}
int nBottomC = nRingSize + nTipVertices;
vertices[nBottomC] = new Vector3D(0, 0, 0);
uv[nBottomC] = new Vector2F(0.5f, 0.5f);
normals[nBottomC] = new Vector3F(0, -1, 0);
if (NoSharedVertices)
{
int nStartB = nBottomC + 1;
for (int k = 0; k < Slices; ++k)
{
float a = fStartRad + (float)k * fDelta;
double cosa = Math.Cos(a), sina = Math.Sin(a);
vertices[nStartB + k] = new Vector3D(BaseRadius * cosa, 0, BaseRadius * sina);
uv[nStartB + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartB + k] = -Vector3F.AxisY;
}
append_disc(Slices, nBottomC, nStartB, bClosed, Clockwise, ref ti);
// ugh this is very ugly but hard to see the pattern...
if (bClosed == false)
{
int nStartF = nStartB + Slices;
vertices[nStartF] = vertices[nStartF + 4] = vertices[nBottomC];
vertices[nStartF + 1] = vertices[nStartF + 3] = new Vector3D(0, Height, 0);;
vertices[nStartF + 2] = vertices[0];;
vertices[nStartF + 5] = vertices[nRingSize - 1];
normals[nStartF] = normals[nStartF + 1] = normals[nStartF + 2]
= estimate_normal(nStartF, nStartF + 1, nStartF + 2);
normals[nStartF + 3] = normals[nStartF + 4] = normals[nStartF + 5]
= estimate_normal(nStartF + 3, nStartF + 4, nStartF + 5);
uv[nStartF] = uv[nStartF + 4] = new Vector2F(0, 0);
uv[nStartF + 1] = uv[nStartF + 3] = new Vector2F(0, 1);
uv[nStartF + 2] = uv[nStartF + 5] = new Vector2F(1, 0);
triangles.Set(ti++, nStartF + 0, nStartF + 1, nStartF + 2, !Clockwise);
triangles.Set(ti++, nStartF + 3, nStartF + 4, nStartF + 5, !Clockwise);
}
}
else
{
append_disc(Slices, nBottomC, 0, bClosed, Clockwise, ref ti);
if (bClosed == false)
{
triangles.Set(ti++, nBottomC, nRingSize, 0, !Clockwise);
triangles.Set(ti++, nBottomC, nRingSize, nRingSize - 1, Clockwise);
}
}
}
public override void Generate()
{
int nRings = Curve.Length;
int nRingSize = (NoSharedVertices) ? Slices + 1 : Slices;
int nCapVertices = (NoSharedVertices) ? Slices + 1 : 1;
if (Capped == false)
{
nCapVertices = 0;
}
vertices = new VectorArray3d(nRingSize * nRings + 2 * nCapVertices);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
int nSpanTris = (nRings - 1) * (2 * Slices);
int nCapTris = (Capped) ? 2 * Slices : 0;
triangles = new IndexArray3i(nSpanTris + nCapTris);
float fDelta = (float)((Math.PI * 2.0) / Slices);
Frame3f f = Axis;
// generate tube
for (int ri = 0; ri < nRings; ++ri)
{
Vector3D v_along = Curve[ri];
Vector3F v_frame = f.ToFrameP((Vector3F)v_along);
float uv_along = (float)ri / (float)(nRings - 1);
// generate vertices
int nStartR = ri * nRingSize;
for (int j = 0; j < nRingSize; ++j)
{
float angle = (float)j * fDelta;
// [TODO] this is not efficient...use Matrix3f?
Vector3F v_rot = Quaternionf.AxisAngleR(Vector3F.AxisY, angle) * v_frame;
Vector3D v_new = f.FromFrameP(v_rot);
int k = nStartR + j;
vertices[k] = v_new;
float uv_around = (float)j / (float)(nRingSize);
uv[k] = new Vector2F(uv_along, uv_around);
// [TODO] proper normal
Vector3F n = (Vector3F)(v_new - f.Origin).Normalized;
normals[k] = n;
}
}
// generate triangles
int ti = 0;
for (int ri = 0; ri < nRings - 1; ++ri)
{
int r0 = ri * nRingSize;
int r1 = r0 + nRingSize;
for (int k = 0; k < nRingSize - 1; ++k)
{
triangles.Set(ti++, r0 + k, r0 + k + 1, r1 + k + 1, Clockwise);
triangles.Set(ti++, r0 + k, r1 + k + 1, r1 + k, Clockwise);
}
if (NoSharedVertices == false) // close disc if we went all the way
{
triangles.Set(ti++, r1 - 1, r0, r1, Clockwise);
triangles.Set(ti++, r1 - 1, r1, r1 + nRingSize - 1, Clockwise);
}
}
if (Capped)
{
// find avg start loop size
Vector3D vAvgStart = Vector3D.Zero, vAvgEnd = Vector3D.Zero;
for (int k = 0; k < Slices; ++k)
{
vAvgStart += vertices[k];
vAvgEnd += vertices[(nRings - 1) * nRingSize + k];
}
vAvgStart /= (double)Slices;
vAvgEnd /= (double)Slices;
Frame3f fStart = f;
fStart.Origin = (Vector3F)vAvgStart;
Frame3f fEnd = f;
fEnd.Origin = (Vector3F)vAvgEnd;
// add endcap verts
int nBottomC = nRings * nRingSize;
vertices[nBottomC] = fStart.Origin;
uv[nBottomC] = new Vector2F(0.5f, 0.5f);
normals[nBottomC] = -fStart.Z;
startCapCenterIndex = nBottomC;
int nTopC = nBottomC + 1;
vertices[nTopC] = fEnd.Origin;
uv[nTopC] = new Vector2F(0.5f, 0.5f);
normals[nTopC] = fEnd.Z;
endCapCenterIndex = nTopC;
if (NoSharedVertices)
{
// duplicate first loop and make a fan w/ bottom-center
int nExistingB = 0;
int nStartB = nTopC + 1;
for (int k = 0; k < Slices; ++k)
{
vertices[nStartB + k] = vertices[nExistingB + k];
//uv[nStartB + k] = (Vector2f)Polygon.Vertices[k].Normalized;
float angle = (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
uv[nStartB + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartB + k] = normals[nBottomC];
}
append_disc(Slices, nBottomC, nStartB, true, Clockwise, ref ti);
// duplicate second loop and make fan
int nExistingT = nRingSize * (nRings - 1);
int nStartT = nStartB + Slices;
for (int k = 0; k < Slices; ++k)
{
vertices[nStartT + k] = vertices[nExistingT + k];
//uv[nStartT + k] = (Vector2f)Polygon.Vertices[k].Normalized;
float angle = (float)k * fDelta;
double cosa = Math.Cos(angle), sina = Math.Sin(angle);
uv[nStartT + k] = new Vector2F(0.5f * (1.0f + cosa), 0.5f * (1 + sina));
normals[nStartT + k] = normals[nTopC];
}
append_disc(Slices, nTopC, nStartT, true, !Clockwise, ref ti);
}
else
{
append_disc(Slices, nBottomC, 0, true, Clockwise, ref ti);
append_disc(Slices, nTopC, nRingSize * (nRings - 1), true, !Clockwise, ref ti);
}
}
}
public DMesh3 CreateMesh(List <Vector3d> path,
List <Polygon2d> polys,
VectorArray3d seam)
{
// Ignore first and last path/polys for mesh generation.
// We just need the extra path positions to calculate a
// continuous tangent at the seams.
List <Vector3d> pathXZ = new List <Vector3d>();
for (int i = 0; i < path.Count; i++)
{
pathXZ.Add(new Vector3d(path[i].x, 0, path[i].z));
}
int nVerts = path.Count - 2;
int nPolys = polys.Count - 2;
// Same VertexCount for all Polygons.
int nSlices = polys[0].VertexCount;
int nPolySize = nSlices + 1;
int nVecs = nVerts * nPolySize;
vertices = new VectorArray3d(nVecs);
normals = new VectorArray3f(nVecs);
uv = new VectorArray2f(nVecs);
int quad_strips = nVerts - 1;
int nSpanTris = quad_strips * (2 * nSlices);
triangles = new IndexArray3i(nSpanTris);
Frame3f fCur = new Frame3f(frame);
double pathLength = CurveUtils.ArcLength(path.GetRange(1, nVerts));
double accum_path_u = 0;
for (int ri = 0; ri < nPolys; ++ri)
{
int si = ri + 1; // actual path/polys index for mesh
Vector3d tangent = CurveUtils.GetTangent(pathXZ, si);
fCur.Origin = (Vector3f)path[si];
fCur.AlignAxis(2, (Vector3f)tangent);
int nStartR = ri * nPolySize;
double accum_ring_v = 0;
bool copy = ri == nPolys - 1;
bool paste = ri == 0;
for (int j = 0; j < nPolySize; ++j)
{
int k = nStartR + j;
Vector2d pv = polys[si].Vertices[j % nSlices];
Vector2d pvNext = polys[si].Vertices[(j + 1) % nSlices];
Vector3d v = fCur.FromPlaneUV((Vector2f)pv, 2);
vertices[k] = v;
Vector3f n = (Vector3f)(v - fCur.Origin).Normalized;
normals[k] = n;
uv[k] = new Vector2f(accum_path_u, accum_ring_v);
accum_ring_v += (pv.Distance(pvNext) / polys[si].ArcLength);
if (copy)
{
Seam[j] = vertices[k];
}
else if (paste)
{
vertices[k] = seam[j];
}
}
double d = path[si].Distance(path[si + 1]);
accum_path_u += d / pathLength;
}
int nStop = nVerts - 1;
int ti = 0;
for (int ri = 0; ri < nStop; ++ri)
{
int r0 = ri * nPolySize;
int r1 = r0 + nPolySize;
for (int k = 0; k < nPolySize - 1; ++k)
{
triangles.Set(ti++, r0 + k, r0 + k + 1, r1 + k + 1, Clockwise);
triangles.Set(ti++, r0 + k, r1 + k + 1, r1 + k, Clockwise);
}
}
return(MakeDMesh());
}
override public void Generate()
{
vertices = new VectorArray3d(4);
uv = new VectorArray2f(4);
normals = new VectorArray3f(4);
triangles = new IndexArray3i(2);
vertices[0] = new Vector3D(-Width / 2.0f, 0, -Height / 2.0f);
vertices[1] = new Vector3D(Width / 2.0f, 0, -Height / 2.0f);
vertices[2] = new Vector3D(Width / 2.0f, 0, Height / 2.0f);
vertices[3] = new Vector3D(-Width / 2.0f, 0, Height / 2.0f);
normals[0] = normals[1] = normals[2] = normals[3] = Vector3F.AxisY;
float uvleft = 0.0f, uvright = 1.0f, uvbottom = 0.0f, uvtop = 1.0f;
// if we want the UV subregion, we assume it is
if (UVMode != UVModes.FullUVSquare)
{
if (Width > Height)
{
float a = Height / Width;
if (UVMode == UVModes.CenteredUVRectangle)
{
uvbottom = 0.5f - a / 2.0f; uvtop = 0.5f + a / 2.0f;
}
else
{
uvtop = a;
}
}
else if (Height > Width)
{
float a = Width / Height;
if (UVMode == UVModes.CenteredUVRectangle)
{
uvleft = 0.5f - a / 2.0f; uvright = 0.5f + a / 2.0f;
}
else
{
uvright = a;
}
}
}
uv[0] = new Vector2F(uvleft, uvbottom);
uv[1] = new Vector2F(uvright, uvbottom);
uv[2] = new Vector2F(uvright, uvtop);
uv[3] = new Vector2F(uvleft, uvtop);
if (Clockwise == true)
{
triangles.Set(0, 0, 1, 2);
triangles.Set(1, 0, 2, 3);
}
else
{
triangles.Set(0, 0, 2, 1);
triangles.Set(1, 0, 3, 2);
}
}
override public void Generate()
{
int corner_v = 0, corner_t = 0;
for (int k = 0; k < 4; ++k)
{
if (((int)SharpCorners & (1 << k)) != 0)
{
corner_v += 1;
corner_t += 2;
}
else
{
corner_v += CornerSteps;
corner_t += (CornerSteps + 1);
}
}
vertices = new VectorArray3d(12 + corner_v);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
triangles = new IndexArray3i(10 + corner_t);
float innerW = Width - 2 * Radius;
float innerH = Height - 2 * Radius;
// make vertices for inner "cross" (ie 5 squares)
vertices[0] = new Vector3D(-innerW / 2.0f, 0, -innerH / 2.0f);
vertices[1] = new Vector3D(innerW / 2.0f, 0, -innerH / 2.0f);
vertices[2] = new Vector3D(innerW / 2.0f, 0, innerH / 2.0f);
vertices[3] = new Vector3D(-innerW / 2.0f, 0, innerH / 2.0f);
vertices[4] = new Vector3D(-innerW / 2, 0, -Height / 2);
vertices[5] = new Vector3D(innerW / 2, 0, -Height / 2);
vertices[6] = new Vector3D(Width / 2, 0, -innerH / 2);
vertices[7] = new Vector3D(Width / 2, 0, innerH / 2);
vertices[8] = new Vector3D(innerW / 2, 0, Height / 2);
vertices[9] = new Vector3D(-innerW / 2, 0, Height / 2);
vertices[10] = new Vector3D(-Width / 2, 0, innerH / 2);
vertices[11] = new Vector3D(-Width / 2, 0, -innerH / 2);
// make triangles for inner cross
bool cycle = (Clockwise == false);
int ti = 0;
append_rectangle(0, 1, 2, 3, cycle, ref ti);
append_rectangle(4, 5, 1, 0, cycle, ref ti);
append_rectangle(1, 6, 7, 2, cycle, ref ti);
append_rectangle(3, 2, 8, 9, cycle, ref ti);
append_rectangle(11, 0, 3, 10, cycle, ref ti);
int vi = 12;
for (int j = 0; j < 4; ++j)
{
bool sharp = ((int)SharpCorners & (1 << j)) > 0;
if (sharp)
{
append_2d_disc_segment(corner_spans[3 * j], corner_spans[3 * j + 1], corner_spans[3 * j + 2], 1,
cycle, ref vi, ref ti, -1, math.MathUtil.SqrtTwo * Radius);
}
else
{
append_2d_disc_segment(corner_spans[3 * j], corner_spans[3 * j + 1], corner_spans[3 * j + 2], CornerSteps,
cycle, ref vi, ref ti);
}
}
for (int k = 0; k < vertices.Count; ++k)
{
normals[k] = Vector3F.AxisY;
}
float uvleft = 0.0f, uvright = 1.0f, uvbottom = 0.0f, uvtop = 1.0f;
// if we want the UV subregion, we assume it is
if (UVMode != UVModes.FullUVSquare)
{
if (Width > Height)
{
float a = Height / Width;
if (UVMode == UVModes.CenteredUVRectangle)
{
uvbottom = 0.5f - a / 2.0f; uvtop = 0.5f + a / 2.0f;
}
else
{
uvtop = a;
}
}
else if (Height > Width)
{
float a = Width / Height;
if (UVMode == UVModes.CenteredUVRectangle)
{
uvleft = 0.5f - a / 2.0f; uvright = 0.5f + a / 2.0f;
}
else
{
uvright = a;
}
}
}
Vector3D c = new Vector3D(-Width / 2, 0, -Height / 2);
for (int k = 0; k < vertices.Count; ++k)
{
Vector3D v = vertices[k];
double tx = (v.x - c.x) / Width;
double ty = (v.y - c.y) / Height;
uv[k] = new Vector2F((1 - tx) * uvleft + (tx) * uvright,
(1 - ty) * uvbottom + (ty) * uvtop);
}
}
override public void Generate()
{
if (Polygon == null)
{
Polygon = Polygon2d.MakeCircle(1.0f, 8);
}
int Slices = Polygon.VertexCount;
int nRings = Vertices.Count;
int nRingSize = (NoSharedVertices) ? Slices + 1 : Slices;
int nCapVertices = (NoSharedVertices) ? Slices + 1 : 1;
if (Capped == false)
{
nCapVertices = 0;
}
vertices = new VectorArray3d(nRings * nRingSize + 2 * nCapVertices);
uv = new VectorArray2f(vertices.Count);
normals = new VectorArray3f(vertices.Count);
int nSpanTris = (Vertices.Count - 1) * (2 * Slices);
int nCapTris = (Capped) ? 2 * Slices : 0;
triangles = new IndexArray3i(nSpanTris + nCapTris);
Frame3f fCur = new Frame3f(Frame);
Vector3D dv = CurveUtils.GetTangent(Vertices, 0);;
fCur.Origin = (Vector3F)Vertices[0];
fCur.AlignAxis(2, (Vector3F)dv);
Frame3f fStart = new Frame3f(fCur);
// generate tube
for (int ri = 0; ri < nRings; ++ri)
{
// propagate frame
if (ri != 0)
{
Vector3D tan = CurveUtils.GetTangent(Vertices, ri);
fCur.Origin = (Vector3F)Vertices[ri];
if (ri == 11)
{
dv = tan;
}
fCur.AlignAxis(2, (Vector3F)tan);
}
float uv_along = (float)ri / (float)(nRings - 1);
// generate vertices
int nStartR = ri * nRingSize;
for (int j = 0; j < nRingSize; ++j)
{
float uv_around = (float)j / (float)(nRings);
int k = nStartR + j;
Vector2D pv = Polygon.Vertices[j % Slices];
Vector3D v = fCur.FromFrameP((Vector2F)pv, 2);
vertices[k] = v;
uv[k] = new Vector2F(uv_along, uv_around);
Vector3F n = (Vector3F)(v - fCur.Origin).Normalized;
normals[k] = n;
}
}
// generate triangles
int ti = 0;
for (int ri = 0; ri < nRings - 1; ++ri)
{
int r0 = ri * nRingSize;
int r1 = r0 + nRingSize;
for (int k = 0; k < nRingSize - 1; ++k)
{
triangles.Set(ti++, r0 + k, r0 + k + 1, r1 + k + 1, Clockwise);
triangles.Set(ti++, r0 + k, r1 + k + 1, r1 + k, Clockwise);
}
if (NoSharedVertices == false) // close disc if we went all the way
{
triangles.Set(ti++, r1 - 1, r0, r1, Clockwise);
triangles.Set(ti++, r1 - 1, r1, r1 + nRingSize - 1, Clockwise);
}
}
if (Capped)
{
// add endcap verts
int nBottomC = nRings * nRingSize;
vertices[nBottomC] = fStart.Origin;
uv[nBottomC] = new Vector2F(0.5f, 0.5f);
normals[nBottomC] = -fStart.Z;
startCapCenterIndex = nBottomC;
int nTopC = nBottomC + 1;
vertices[nTopC] = fCur.Origin;
uv[nTopC] = new Vector2F(0.5f, 0.5f);
normals[nTopC] = fCur.Z;
endCapCenterIndex = nTopC;
if (NoSharedVertices)
{
// duplicate first loop and make a fan w/ bottom-center
int nExistingB = 0;
int nStartB = nTopC + 1;
for (int k = 0; k < Slices; ++k)
{
vertices[nStartB + k] = vertices[nExistingB + k];
uv[nStartB + k] = (Vector2F)Polygon.Vertices[k].Normalized;
normals[nStartB + k] = normals[nBottomC];
}
append_disc(Slices, nBottomC, nStartB, true, Clockwise, ref ti);
// duplicate second loop and make fan
int nExistingT = nRingSize * (nRings - 1);
int nStartT = nStartB + Slices;
for (int k = 0; k < Slices; ++k)
{
vertices[nStartT + k] = vertices[nExistingT + k];
uv[nStartT + k] = (Vector2F)Polygon.Vertices[k].Normalized;
normals[nStartT + k] = normals[nTopC];
}
append_disc(Slices, nTopC, nStartT, true, !Clockwise, ref ti);
}
else
{
append_disc(Slices, nBottomC, 0, true, Clockwise, ref ti);
append_disc(Slices, nTopC, nRingSize * (nRings - 1), true, !Clockwise, ref ti);
}
}
}
