internal Profile(int sides, float profileStart, float profileEnd, float hollow, int hollowSides, bool createFaces, bool calcVertexNormals)
{
this.calcVertexNormals = calcVertexNormals;
this.coords = new List<Coord>();
this.faces = new List<Face>();
this.vertexNormals = new List<Coord>();
this.us = new List<float>();
this.faceUVs = new List<UVCoord>();
this.faceNumbers = new List<int>();
Coord center = new Coord(0.0f, 0.0f, 0.0f);
//bool hasCenter = false;
List<Coord> hollowCoords = new List<Coord>();
List<Coord> hollowNormals = new List<Coord>();
List<float> hollowUs = new List<float>();
if (calcVertexNormals)
{
this.outerCoordIndices = new List<int>();
this.hollowCoordIndices = new List<int>();
this.cut1CoordIndices = new List<int>();
this.cut2CoordIndices = new List<int>();
}
bool hasHollow = (hollow > 0.0f);
bool hasProfileCut = (profileStart > 0.0f || profileEnd < 1.0f);
AngleList angles = new AngleList();
AngleList hollowAngles = new AngleList();
float xScale = 0.5f;
float yScale = 0.5f;
if (sides == 4) // corners of a square are sqrt(2) from center
{
xScale = 0.707f;
yScale = 0.707f;
}
float startAngle = profileStart * twoPi;
float stopAngle = profileEnd * twoPi;
try { angles.makeAngles(sides, startAngle, stopAngle); }
catch (Exception ex)
{
errorMessage = "makeAngles failed: Exception: " + ex.ToString()
+ "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
return;
}
this.numOuterVerts = angles.angles.Count;
// flag to create as few triangles as possible for 3 or 4 side profile
bool simpleFace = (sides < 5 && !hasHollow && !hasProfileCut);
if (hasHollow)
{
if (sides == hollowSides)
hollowAngles = angles;
else
{
try { hollowAngles.makeAngles(hollowSides, startAngle, stopAngle); }
catch (Exception ex)
{
errorMessage = "makeAngles failed: Exception: " + ex.ToString()
+ "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
return;
}
}
this.numHollowVerts = hollowAngles.angles.Count;
}
else if (!simpleFace)
{
this.coords.Add(center);
//hasCenter = true;
if (this.calcVertexNormals)
this.vertexNormals.Add(new Coord(0.0f, 0.0f, 1.0f));
this.us.Add(0.0f);
}
float z = 0.0f;
Angle angle;
Coord newVert = new Coord();
if (hasHollow && hollowSides != sides)
{
int numHollowAngles = hollowAngles.angles.Count;
for (int i = 0; i < numHollowAngles; i++)
{
angle = hollowAngles.angles[i];
newVert.X = hollow * xScale * angle.X;
newVert.Y = hollow * yScale * angle.Y;
newVert.Z = z;
hollowCoords.Add(newVert);
if (this.calcVertexNormals)
{
if (hollowSides < 5)
hollowNormals.Add(hollowAngles.normals[i].Invert());
else
hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f));
hollowUs.Add(angle.angle * hollow);
}
}
}
int index = 0;
int numAngles = angles.angles.Count;
for (int i = 0; i < numAngles; i++)
{
angle = angles.angles[i];
newVert.X = angle.X * xScale;
newVert.Y = angle.Y * yScale;
newVert.Z = z;
this.coords.Add(newVert);
if (this.calcVertexNormals)
{
this.outerCoordIndices.Add(this.coords.Count - 1);
if (sides < 5)
{
this.vertexNormals.Add(angles.normals[i]);
float u = angle.angle;
this.us.Add(u);
}
else
{
this.vertexNormals.Add(new Coord(angle.X, angle.Y, 0.0f));
this.us.Add(angle.angle);
}
}
if (hasHollow)
{
if (hollowSides == sides)
{
newVert.X *= hollow;
newVert.Y *= hollow;
newVert.Z = z;
hollowCoords.Add(newVert);
if (this.calcVertexNormals)
{
if (sides < 5)
{
hollowNormals.Add(angles.normals[i].Invert());
}
else
hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f));
hollowUs.Add(angle.angle * hollow);
}
}
}
else if (!simpleFace && createFaces && angle.angle > 0.0001f)
{
Face newFace = new Face();
newFace.v1 = 0;
newFace.v2 = index;
newFace.v3 = index + 1;
this.faces.Add(newFace);
}
index += 1;
}
if (hasHollow)
{
hollowCoords.Reverse();
if (this.calcVertexNormals)
{
hollowNormals.Reverse();
hollowUs.Reverse();
}
if (createFaces)
{
//int numOuterVerts = this.coords.Count;
//numOuterVerts = this.coords.Count;
//int numHollowVerts = hollowCoords.Count;
int numTotalVerts = this.numOuterVerts + this.numHollowVerts;
if (this.numOuterVerts == this.numHollowVerts)
{
Face newFace = new Face();
for (int coordIndex = 0; coordIndex < this.numOuterVerts - 1; coordIndex++)
{
newFace.v1 = coordIndex;
newFace.v2 = coordIndex + 1;
newFace.v3 = numTotalVerts - coordIndex - 1;
this.faces.Add(newFace);
newFace.v1 = coordIndex + 1;
newFace.v2 = numTotalVerts - coordIndex - 2;
newFace.v3 = numTotalVerts - coordIndex - 1;
this.faces.Add(newFace);
}
}
else
{
if (this.numOuterVerts < this.numHollowVerts)
{
Face newFace = new Face();
int j = 0; // j is the index for outer vertices
int maxJ = this.numOuterVerts - 1;
for (int i = 0; i < this.numHollowVerts; i++) // i is the index for inner vertices
{
if (j < maxJ)
if (angles.angles[j + 1].angle - hollowAngles.angles[i].angle < hollowAngles.angles[i].angle - angles.angles[j].angle + 0.000001f)
{
newFace.v1 = numTotalVerts - i - 1;
newFace.v2 = j;
newFace.v3 = j + 1;
this.faces.Add(newFace);
j += 1;
}
newFace.v1 = j;
newFace.v2 = numTotalVerts - i - 2;
newFace.v3 = numTotalVerts - i - 1;
this.faces.Add(newFace);
}
}
else // numHollowVerts < numOuterVerts
{
Face newFace = new Face();
int j = 0; // j is the index for inner vertices
int maxJ = this.numHollowVerts - 1;
for (int i = 0; i < this.numOuterVerts; i++)
{
if (j < maxJ)
if (hollowAngles.angles[j + 1].angle - angles.angles[i].angle < angles.angles[i].angle - hollowAngles.angles[j].angle + 0.000001f)
{
newFace.v1 = i;
newFace.v2 = numTotalVerts - j - 2;
newFace.v3 = numTotalVerts - j - 1;
this.faces.Add(newFace);
j += 1;
}
newFace.v1 = numTotalVerts - j - 1;
newFace.v2 = i;
newFace.v3 = i + 1;
this.faces.Add(newFace);
}
}
}
}
if (calcVertexNormals)
{
foreach (Coord hc in hollowCoords)
{
this.coords.Add(hc);
hollowCoordIndices.Add(this.coords.Count - 1);
}
}
else
this.coords.AddRange(hollowCoords);
if (this.calcVertexNormals)
{
this.vertexNormals.AddRange(hollowNormals);
this.us.AddRange(hollowUs);
}
}
if (simpleFace && createFaces)
{
if (sides == 3)
this.faces.Add(new Face(0, 1, 2));
else if (sides == 4)
{
this.faces.Add(new Face(0, 1, 2));
this.faces.Add(new Face(0, 2, 3));
}
}
if (calcVertexNormals && hasProfileCut)
{
if (hasHollow)
{
int lastOuterVertIndex = this.numOuterVerts - 1;
this.cut1CoordIndices.Add(0);
this.cut1CoordIndices.Add(this.coords.Count - 1);
this.cut2CoordIndices.Add(lastOuterVertIndex + 1);
this.cut2CoordIndices.Add(lastOuterVertIndex);
this.cutNormal1.X = this.coords[0].Y - this.coords[this.coords.Count - 1].Y;
this.cutNormal1.Y = -(this.coords[0].X - this.coords[this.coords.Count - 1].X);
this.cutNormal2.X = this.coords[lastOuterVertIndex + 1].Y - this.coords[lastOuterVertIndex].Y;
this.cutNormal2.Y = -(this.coords[lastOuterVertIndex + 1].X - this.coords[lastOuterVertIndex].X);
}
else
{
this.cutNormal1.X = this.vertexNormals[1].Y;
this.cutNormal1.Y = -this.vertexNormals[1].X;
this.cutNormal2.X = -this.vertexNormals[this.vertexNormals.Count - 2].Y;
this.cutNormal2.Y = this.vertexNormals[this.vertexNormals.Count - 2].X;
}
this.cutNormal1.Normalize();
this.cutNormal2.Normalize();
}
this.MakeFaceUVs();
hollowCoords = null;
hollowNormals = null;
hollowUs = null;
if (calcVertexNormals)
{ // calculate prim face numbers
// face number order is top, outer, hollow, bottom, start cut, end cut
// I know it's ugly but so is the whole concept of prim face numbers
int faceNum = 1; // start with outer faces
int startVert = hasProfileCut && !hasHollow ? 1 : 0;
if (startVert > 0)
this.faceNumbers.Add(-1);
for (int i = 0; i < this.numOuterVerts - 1; i++)
this.faceNumbers.Add(sides < 5 ? faceNum++ : faceNum);
//if (!hasHollow && !hasProfileCut)
// this.bottomFaceNumber = faceNum++;
this.faceNumbers.Add(hasProfileCut ? -1 : faceNum++);
if (sides > 4 && (hasHollow || hasProfileCut))
faceNum++;
if (hasHollow)
{
for (int i = 0; i < this.numHollowVerts; i++)
this.faceNumbers.Add(faceNum);
faceNum++;
}
//if (hasProfileCut || hasHollow)
// this.bottomFaceNumber = faceNum++;
this.bottomFaceNumber = faceNum++;
if (hasHollow && hasProfileCut)
this.faceNumbers.Add(faceNum++);
for (int i = 0; i < this.faceNumbers.Count; i++)
if (this.faceNumbers[i] == -1)
this.faceNumbers[i] = faceNum++;
this.numPrimFaces = faceNum;
}
}
public Profile(int sides, float profileStart, float profileEnd, float hollow, int hollowSides, bool hasProfileCut, bool createFaces)
{
const float halfSqr2 = 0.7071067811866f;
this.coords = new List<Coord>();
this.faces = new List<Face>();
List<Coord> hollowCoords = new List<Coord>();
bool hasHollow = (hollow > 0.0f);
AngleList angles = new AngleList();
AngleList hollowAngles = new AngleList();
float xScale = 0.5f;
float yScale = 0.5f;
if (sides == 4) // corners of a square are sqrt(2) from center
{
xScale = halfSqr2;
yScale = halfSqr2;
}
float startAngle = profileStart * twoPi;
float stopAngle = profileEnd * twoPi;
try { angles.makeAngles(sides, startAngle, stopAngle,hasProfileCut); }
catch (Exception ex)
{
errorMessage = "makeAngles failed: Exception: " + ex.ToString()
+ "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
return;
}
this.numOuterVerts = angles.angles.Count;
Angle angle;
Coord newVert = new Coord();
// flag to create as few triangles as possible for 3 or 4 side profile
bool simpleFace = (sides < 5 && !hasHollow && !hasProfileCut);
if (hasHollow)
{
if (sides == hollowSides)
hollowAngles = angles;
else
{
try { hollowAngles.makeAngles(hollowSides, startAngle, stopAngle, hasProfileCut); }
catch (Exception ex)
{
errorMessage = "makeAngles failed: Exception: " + ex.ToString()
+ "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
return;
}
int numHollowAngles = hollowAngles.angles.Count;
for (int i = 0; i < numHollowAngles; i++)
{
angle = hollowAngles.angles[i];
newVert.X = hollow * xScale * angle.X;
newVert.Y = hollow * yScale * angle.Y;
newVert.Z = 0.0f;
hollowCoords.Add(newVert);
}
}
this.numHollowVerts = hollowAngles.angles.Count;
}
else if (!simpleFace)
{
Coord center = new Coord(0.0f, 0.0f, 0.0f);
this.coords.Add(center);
}
int numAngles = angles.angles.Count;
bool hollowsame = (hasHollow && hollowSides == sides);
for (int i = 0; i < numAngles; i++)
{
angle = angles.angles[i];
newVert.X = angle.X * xScale;
newVert.Y = angle.Y * yScale;
newVert.Z = 0.0f;
this.coords.Add(newVert);
if (hollowsame)
{
newVert.X *= hollow;
newVert.Y *= hollow;
hollowCoords.Add(newVert);
}
}
if (hasHollow)
{
hollowCoords.Reverse();
this.coords.AddRange(hollowCoords);
if (createFaces)
{
int numTotalVerts = this.numOuterVerts + this.numHollowVerts;
if (this.numOuterVerts == this.numHollowVerts)
{
Face newFace = new Face();
for (int coordIndex = 0; coordIndex < this.numOuterVerts - 1; coordIndex++)
{
newFace.v1 = coordIndex;
newFace.v2 = coordIndex + 1;
newFace.v3 = numTotalVerts - coordIndex - 1;
this.faces.Add(newFace);
newFace.v1 = coordIndex + 1;
newFace.v2 = numTotalVerts - coordIndex - 2;
newFace.v3 = numTotalVerts - coordIndex - 1;
this.faces.Add(newFace);
}
if (!hasProfileCut)
{
newFace.v1 = this.numOuterVerts - 1;
newFace.v2 = 0;
newFace.v3 = this.numOuterVerts;
this.faces.Add(newFace);
newFace.v1 = 0;
newFace.v2 = numTotalVerts - 1;
newFace.v3 = this.numOuterVerts;
this.faces.Add(newFace);
}
}
else if (this.numOuterVerts < this.numHollowVerts)
{
Face newFace = new Face();
int j = 0; // j is the index for outer vertices
int i;
int maxJ = this.numOuterVerts - 1;
float curHollowAngle = 0;
for (i = 0; i < this.numHollowVerts; i++) // i is the index for inner vertices
{
curHollowAngle = hollowAngles.angles[i].angle;
if (j < maxJ)
{
if (angles.angles[j + 1].angle - curHollowAngle < curHollowAngle - angles.angles[j].angle + 0.000001f)
{
newFace.v1 = numTotalVerts - i - 1;
newFace.v2 = j;
newFace.v3 = j + 1;
this.faces.Add(newFace);
j++;
}
}
else
{
if (1.0f - curHollowAngle < curHollowAngle - angles.angles[j].angle + 0.000001f)
break;
}
newFace.v1 = j;
newFace.v2 = numTotalVerts - i - 2;
newFace.v3 = numTotalVerts - i - 1;
this.faces.Add(newFace);
}
if (!hasProfileCut)
{
if (i == this.numHollowVerts)
{
newFace.v1 = numTotalVerts - this.numHollowVerts;
newFace.v2 = maxJ;
newFace.v3 = 0;
this.faces.Add(newFace);
}
else
{
if (1.0f - curHollowAngle < curHollowAngle - angles.angles[maxJ].angle + 0.000001f)
{
newFace.v1 = numTotalVerts - i - 1;
newFace.v2 = maxJ;
newFace.v3 = 0;
this.faces.Add(newFace);
}
for (; i < this.numHollowVerts - 1; i++)
{
newFace.v1 = 0;
newFace.v2 = numTotalVerts - i - 2;
newFace.v3 = numTotalVerts - i - 1;
this.faces.Add(newFace);
}
}
newFace.v1 = 0;
newFace.v2 = numTotalVerts - this.numHollowVerts;
newFace.v3 = numTotalVerts - 1;
this.faces.Add(newFace);
}
}
else // numHollowVerts < numOuterVerts
{
Face newFace = new Face();
int j = 0; // j is the index for inner vertices
int maxJ = this.numHollowVerts - 1;
for (int i = 0; i < this.numOuterVerts; i++)
{
if (j < maxJ)
if (hollowAngles.angles[j + 1].angle - angles.angles[i].angle < angles.angles[i].angle - hollowAngles.angles[j].angle + 0.000001f)
{
newFace.v1 = i;
newFace.v2 = numTotalVerts - j - 2;
newFace.v3 = numTotalVerts - j - 1;
this.faces.Add(newFace);
j += 1;
}
newFace.v1 = numTotalVerts - j - 1;
newFace.v2 = i;
newFace.v3 = i + 1;
this.faces.Add(newFace);
}
if (!hasProfileCut)
{
int i = this.numOuterVerts - 1;
if (hollowAngles.angles[0].angle - angles.angles[i].angle < angles.angles[i].angle - hollowAngles.angles[maxJ].angle + 0.000001f)
{
newFace.v1 = 0;
newFace.v2 = numTotalVerts - maxJ - 1;
newFace.v3 = numTotalVerts - 1;
this.faces.Add(newFace);
}
newFace.v1 = numTotalVerts - maxJ - 1;
newFace.v2 = i;
newFace.v3 = 0;
this.faces.Add(newFace);
}
}
}
}
else if (createFaces)
{
if (simpleFace)
{
if (sides == 3)
this.faces.Add(new Face(0, 1, 2));
else if (sides == 4)
{
this.faces.Add(new Face(0, 1, 2));
this.faces.Add(new Face(0, 2, 3));
}
}
else
{
for (int i = 1; i < numAngles ; i++)
{
Face newFace = new Face();
newFace.v1 = 0;
newFace.v2 = i;
newFace.v3 = i + 1;
this.faces.Add(newFace);
}
if (!hasProfileCut)
{
Face newFace = new Face();
newFace.v1 = 0;
newFace.v2 = numAngles;
newFace.v3 = 1;
this.faces.Add(newFace);
}
}
}
hollowCoords = null;
}