private static void EndCap_PlateSoft(ref int pointOffset, ref double[] rotateAnglesForPerp, MeshGeometry3D geometry, Point[] pointsTheta, Transform3D transform, Transform3D normalTransform, TubeRingBase ring, bool isFirst)
{
#region Positions/Normals
if (isFirst || !ring.MergeNormalWithPrevIfSoft)
{
for (int thetaCntr = 0; thetaCntr < pointsTheta.Length; thetaCntr++)
{
Point3D point = new Point3D(pointsTheta[thetaCntr].X, pointsTheta[thetaCntr].Y, 0d);
geometry.Positions.Add(transform.Transform(point));
Vector3D normal;
if (ring.MergeNormalWithPrevIfSoft)
{
//normal = point.ToVector(); // this isn't right
throw new ApplicationException("finish this");
}
else
{
normal = new Vector3D(0, 0, 1);
}
geometry.Normals.Add(normalTransform.Transform(normal).ToUnit());
}
}
#endregion
#region Add the triangles
// Start with 0,1,2
geometry.TriangleIndices.Add(pointOffset + 0);
geometry.TriangleIndices.Add(pointOffset + 1);
geometry.TriangleIndices.Add(pointOffset + 2);
int lowerIndex = 2;
int upperIndex = pointsTheta.Length - 1;
int lastUsedIndex = 0;
bool shouldBumpLower = true;
// Do the rest of the triangles
while (lowerIndex < upperIndex)
{
geometry.TriangleIndices.Add(pointOffset + lowerIndex);
geometry.TriangleIndices.Add(pointOffset + upperIndex);
geometry.TriangleIndices.Add(pointOffset + lastUsedIndex);
if (shouldBumpLower)
{
lastUsedIndex = lowerIndex;
lowerIndex++;
}
else
{
lastUsedIndex = upperIndex;
upperIndex--;
}
shouldBumpLower = !shouldBumpLower;
}
#endregion
pointOffset = geometry.Positions.Count;
}
private static Point[] EndCap_GetPoints(TubeRingBase ringPrev, TubeRingBase ringNext, int numSides, bool isFirst)
{
// Figure out which ring to pull from
TubeRingBase ring = null;
if (isFirst)
{
ring = ringNext;
}
else
{
ring = ringPrev;
}
// Get the points
Point[] retVal = null;
if (ring != null && ring is TubeRingRegularPolygon)
{
retVal = GetPointsRegPoly(numSides, (TubeRingRegularPolygon)ring);
}
if (retVal == null)
{
throw new ApplicationException("The points are null for dome/point. Validation should have caught this before now");
}
// Exit Function
return retVal;
}
private static double EndCap_GetCapHeight(TubeRingBase ringCurrent, TubeRingBase ringNext, bool isFirst)
{
if (isFirst)
{
// ringCurrent.DistFromPrevRing is ignored (because there is no previous). So the cap's height is the next ring's dist from prev
return ringNext.DistFromPrevRing;
}
else
{
// This is the last, so dist from prev has meaning
return ringCurrent.DistFromPrevRing;
}
}
private static void EndCap(ref int pointOffset, ref double[] rotateAnglesForPerp, MeshGeometry3D geometry, int numSides, TubeRingBase ringPrev, TubeRingBase ringCurrent, TubeRingBase ringNext, Transform3D transform, bool isFirst, double z, bool softSides)
{
if (ringCurrent is TubeRingDome)
{
#region Dome
Point[] domePointsTheta = EndCap_GetPoints(ringPrev, ringNext, numSides, isFirst);
double capHeight = EndCap_GetCapHeight(ringCurrent, ringNext, isFirst);
Transform3D domeTransform = EndCap_GetTransform(transform, isFirst, z, capHeight);
Transform3D domeTransformNormal = EndCap_GetNormalTransform(domeTransform);
if (softSides)
{
EndCap_DomeSoft(ref pointOffset, ref rotateAnglesForPerp, geometry, domePointsTheta, domeTransform, domeTransformNormal, (TubeRingDome)ringCurrent, capHeight, isFirst);
}
else
{
EndCap_DomeHard(ref pointOffset, ref rotateAnglesForPerp, geometry, domePointsTheta, domeTransform, domeTransformNormal, (TubeRingDome)ringCurrent, capHeight, isFirst);
}
#endregion
}
else if (ringCurrent is TubeRingPoint)
{
#region Point
Point[] conePointsTheta = EndCap_GetPoints(ringPrev, ringNext, numSides, isFirst);
double capHeight = EndCap_GetCapHeight(ringCurrent, ringNext, isFirst);
Transform3D coneTransform = EndCap_GetTransform(transform, isFirst, z, capHeight);
if (softSides)
{
Transform3D coneTransformNormal = EndCap_GetNormalTransform(coneTransform); // only need the transform for soft, because it cheats and has a hardcode normal (hard calculates the normal for each triangle)
EndCap_ConeSoft(ref pointOffset, ref rotateAnglesForPerp, geometry, conePointsTheta, coneTransform, coneTransformNormal, (TubeRingPoint)ringCurrent, capHeight, isFirst);
}
else
{
EndCap_ConeHard(ref pointOffset, ref rotateAnglesForPerp, geometry, conePointsTheta, coneTransform, (TubeRingPoint)ringCurrent, capHeight, isFirst);
}
#endregion
}
else if (ringCurrent is TubeRingRegularPolygon)
{
#region Regular Polygon
TubeRingRegularPolygon ringCurrentCast = (TubeRingRegularPolygon)ringCurrent;
if (ringCurrentCast.IsClosedIfEndCap) // if it's open, there is nothing to do for the end cap
{
Point[] polyPointsTheta = GetPointsRegPoly(numSides, ringCurrentCast);
Transform3D polyTransform = EndCap_GetTransform(transform, isFirst, z);
Transform3D polyTransformNormal = EndCap_GetNormalTransform(polyTransform);
if (softSides)
{
EndCap_PlateSoft(ref pointOffset, ref rotateAnglesForPerp, geometry, polyPointsTheta, polyTransform, polyTransformNormal, ringCurrent, isFirst);
}
else
{
EndCap_PlateHard(ref pointOffset, ref rotateAnglesForPerp, geometry, polyPointsTheta, polyTransform, polyTransformNormal, ringCurrent, isFirst);
}
}
#endregion
}
else
{
throw new ApplicationException("Unknown tube ring type: " + ringCurrent.GetType().ToString());
}
}
private static void Middle(ref int pointOffset, ref double[] rotateAnglesForPerp, MeshGeometry3D geometry, Transform3D transform, int numSides, TubeRingBase ring1, TubeRingBase ring2, double curZ, bool softSides)
{
if (ring1 is TubeRingRegularPolygon && ring2 is TubeRingRegularPolygon)
{
#region Tube
if (softSides)
{
Middle_TubeSoft(ref pointOffset, ref rotateAnglesForPerp, geometry, transform, numSides, (TubeRingRegularPolygon)ring1, (TubeRingRegularPolygon)ring2, curZ);
}
else
{
Middle_TubeHard(ref pointOffset, ref rotateAnglesForPerp, geometry, transform, numSides, (TubeRingRegularPolygon)ring1, (TubeRingRegularPolygon)ring2, curZ);
}
#endregion
}
else
{
// There are no other combos that need to show a visual right now (eventually, I'll have a definition for
// a non regular polygon - low in fiber)
}
}
private static void EndCap_PlateHard(ref int pointOffset, ref double[] rotateAnglesForPerp, MeshGeometry3D geometry, Point[] pointsTheta, Transform3D transform, Transform3D normalTransform, TubeRingBase ring, bool isFirst)
{
Vector3D normal = normalTransform.Transform(new Vector3D(0, 0, 1)).ToUnit();
// Start with 0,1,2
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[0].X, pointsTheta[0].Y, 0d)));
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[1].X, pointsTheta[1].Y, 0d)));
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[2].X, pointsTheta[2].Y, 0d)));
geometry.Normals.Add(normal);
geometry.Normals.Add(normal);
geometry.Normals.Add(normal);
geometry.TriangleIndices.Add(pointOffset + 0);
geometry.TriangleIndices.Add(pointOffset + 1);
geometry.TriangleIndices.Add(pointOffset + 2);
int lowerIndex = 2;
int upperIndex = pointsTheta.Length - 1;
int lastUsedIndex = 0;
bool shouldBumpLower = true;
int localOffset = 3;
// Do the rest of the triangles
while (lowerIndex < upperIndex)
{
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[lowerIndex].X, pointsTheta[lowerIndex].Y, 0d)));
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[upperIndex].X, pointsTheta[upperIndex].Y, 0d)));
geometry.Positions.Add(transform.Transform(new Point3D(pointsTheta[lastUsedIndex].X, pointsTheta[lastUsedIndex].Y, 0d)));
geometry.Normals.Add(normal);
geometry.Normals.Add(normal);
geometry.Normals.Add(normal);
geometry.TriangleIndices.Add(pointOffset + localOffset + 0);
geometry.TriangleIndices.Add(pointOffset + localOffset + 1);
geometry.TriangleIndices.Add(pointOffset + localOffset + 2);
if (shouldBumpLower)
{
lastUsedIndex = lowerIndex;
lowerIndex++;
}
else
{
lastUsedIndex = upperIndex;
upperIndex--;
}
shouldBumpLower = !shouldBumpLower;
localOffset += 3;
}
// Update ref param
pointOffset = geometry.Positions.Count;
}
