/// <summary>
/// Generates a basic mesh structure from a primitive
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh or null on failure</returns>
public OMVR.SimpleMesh GenerateSimpleMesh(OMV.Primitive prim, OMVR.DetailLevel lod)
{
PrimMesher.PrimMesh newPrim = GeneratePrimMesh(prim, lod, false);
if (newPrim == null)
{
return(null);
}
SimpleMesh mesh = new SimpleMesh();
mesh.Path = new Path();
mesh.Prim = prim;
mesh.Profile = new Profile();
mesh.Vertices = new List <Vertex>(newPrim.coords.Count);
for (int i = 0; i < newPrim.coords.Count; i++)
{
PrimMesher.Coord c = newPrim.coords[i];
mesh.Vertices.Add(new Vertex {
Position = new Vector3(c.X, c.Y, c.Z)
});
}
mesh.Indices = new List <ushort>(newPrim.faces.Count * 3);
for (int i = 0; i < newPrim.faces.Count; i++)
{
PrimMesher.Face face = newPrim.faces[i];
mesh.Indices.Add((ushort)face.v1);
mesh.Indices.Add((ushort)face.v2);
mesh.Indices.Add((ushort)face.v3);
}
return(mesh);
}
/// <summary>
/// Create a faceted mesh from prim shape parameters.
/// Generates a a series of faces, each face containing a mesh and
/// material metadata.
/// A prim will turn into multiple faces with each being independent
/// meshes and each having different material information.
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh</returns >
public OMVR.FacetedMesh GenerateFacetedMesh(OMV.Primitive prim, OMVR.DetailLevel lod)
{
bool isSphere = ((OMV.ProfileCurve)(prim.PrimData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle);
PrimMesher.PrimMesh newPrim = GeneratePrimMesh(prim, lod, true);
if (newPrim == null)
{
return(null);
}
// copy the vertex information into OMVR.IRendering structures
OMVR.FacetedMesh omvrmesh = new OMVR.FacetedMesh();
omvrmesh.Faces = new List <OMVR.Face>();
omvrmesh.Prim = prim;
omvrmesh.Profile = new OMVR.Profile();
omvrmesh.Profile.Faces = new List <OMVR.ProfileFace>();
omvrmesh.Profile.Positions = new List <OMV.Vector3>();
omvrmesh.Path = new OMVR.Path();
omvrmesh.Path.Points = new List <OMVR.PathPoint>();
var indexer = newPrim.GetVertexIndexer();
for (int i = 0; i < indexer.numPrimFaces; i++)
{
OMVR.Face oface = new OMVR.Face();
oface.Vertices = new List <OMVR.Vertex>();
oface.Indices = new List <ushort>();
oface.TextureFace = prim.Textures.GetFace((uint)i);
for (int j = 0; j < indexer.viewerVertices[i].Count; j++)
{
var vert = new OMVR.Vertex();
var m = indexer.viewerVertices[i][j];
vert.Position = new Vector3(m.v.X, m.v.Y, m.v.Z);
vert.Normal = new Vector3(m.n.X, m.n.Y, m.n.Z);
vert.TexCoord = new OMV.Vector2(m.uv.U, 1.0f - m.uv.V);
oface.Vertices.Add(vert);
}
for (int j = 0; j < indexer.viewerPolygons[i].Count; j++)
{
var p = indexer.viewerPolygons[i][j];
// Skip "degenerate faces" where the same vertex appears twice in the same tri
if (p.v1 == p.v2 || p.v1 == p.v2 || p.v2 == p.v3)
{
continue;
}
oface.Indices.Add((ushort)p.v1);
oface.Indices.Add((ushort)p.v2);
oface.Indices.Add((ushort)p.v3);
}
omvrmesh.Faces.Add(oface);
}
return(omvrmesh);
}
private PrimMesher.PrimMesh GeneratePrimMesh(Primitive prim, DetailLevel lod, bool viewerMode)
{
OMV.Primitive.ConstructionData primData = prim.PrimData;
int sides = 4;
int hollowsides = 4;
float profileBegin = primData.ProfileBegin;
float profileEnd = primData.ProfileEnd;
bool isSphere = false;
if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
}
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.EqualTriangle)
sides = 3;
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle)
{
// half circle, prim is a sphere
isSphere = true;
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
profileBegin = 0.5f * profileBegin + 0.5f;
profileEnd = 0.5f * profileEnd + 0.5f;
}
if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Same)
hollowsides = sides;
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
hollowsides = 6;
break;
case OMVR.DetailLevel.Medium:
hollowsides = 12;
break;
default:
hollowsides = 24;
break;
}
}
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Triangle)
hollowsides = 3;
PrimMesher.PrimMesh newPrim = new PrimMesher.PrimMesh(sides, profileBegin, profileEnd, (float)primData.ProfileHollow, hollowsides);
newPrim.viewerMode = viewerMode;
newPrim.sphereMode = isSphere;
newPrim.holeSizeX = primData.PathScaleX;
newPrim.holeSizeY = primData.PathScaleY;
newPrim.pathCutBegin = primData.PathBegin;
newPrim.pathCutEnd = primData.PathEnd;
newPrim.topShearX = primData.PathShearX;
newPrim.topShearY = primData.PathShearY;
newPrim.radius = primData.PathRadiusOffset;
newPrim.revolutions = primData.PathRevolutions;
newPrim.skew = primData.PathSkew;
switch (lod)
{
case OMVR.DetailLevel.Low:
newPrim.stepsPerRevolution = 6;
break;
case OMVR.DetailLevel.Medium:
newPrim.stepsPerRevolution = 12;
break;
default:
newPrim.stepsPerRevolution = 24;
break;
}
if ((primData.PathCurve == OMV.PathCurve.Line) || (primData.PathCurve == OMV.PathCurve.Flexible))
{
newPrim.taperX = 1.0f - primData.PathScaleX;
newPrim.taperY = 1.0f - primData.PathScaleY;
newPrim.twistBegin = (int)(180 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(180 * primData.PathTwist);
newPrim.ExtrudeLinear();
}
else
{
newPrim.taperX = primData.PathTaperX;
newPrim.taperY = primData.PathTaperY;
newPrim.twistBegin = (int)(360 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(360 * primData.PathTwist);
newPrim.ExtrudeCircular();
}
return newPrim;
}
private PrimMesher.PrimMesh GeneratePrimMesh(Primitive prim, DetailLevel lod, bool viewerMode)
{
OMV.Primitive.ConstructionData primData = prim.PrimData;
int sides = 4;
int hollowsides = 4;
float profileBegin = primData.ProfileBegin;
float profileEnd = primData.ProfileEnd;
bool isSphere = false;
if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
}
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.EqualTriangle)
{
sides = 3;
}
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle)
{
// half circle, prim is a sphere
isSphere = true;
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
profileBegin = 0.5f * profileBegin + 0.5f;
profileEnd = 0.5f * profileEnd + 0.5f;
}
if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Same)
{
hollowsides = sides;
}
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
hollowsides = 6;
break;
case OMVR.DetailLevel.Medium:
hollowsides = 12;
break;
default:
hollowsides = 24;
break;
}
}
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Triangle)
{
hollowsides = 3;
}
PrimMesher.PrimMesh newPrim = new PrimMesher.PrimMesh(sides, profileBegin, profileEnd, (float)primData.ProfileHollow, hollowsides);
newPrim.viewerMode = viewerMode;
newPrim.sphereMode = isSphere;
newPrim.holeSizeX = primData.PathScaleX;
newPrim.holeSizeY = primData.PathScaleY;
newPrim.pathCutBegin = primData.PathBegin;
newPrim.pathCutEnd = primData.PathEnd;
newPrim.topShearX = primData.PathShearX;
newPrim.topShearY = primData.PathShearY;
newPrim.radius = primData.PathRadiusOffset;
newPrim.revolutions = primData.PathRevolutions;
newPrim.skew = primData.PathSkew;
switch (lod)
{
case OMVR.DetailLevel.Low:
newPrim.stepsPerRevolution = 6;
break;
case OMVR.DetailLevel.Medium:
newPrim.stepsPerRevolution = 12;
break;
default:
newPrim.stepsPerRevolution = 24;
break;
}
if ((primData.PathCurve == OMV.PathCurve.Line) || (primData.PathCurve == OMV.PathCurve.Flexible))
{
newPrim.taperX = 1.0f - primData.PathScaleX;
newPrim.taperY = 1.0f - primData.PathScaleY;
newPrim.twistBegin = (int)(180 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(180 * primData.PathTwist);
newPrim.ExtrudeLinear();
}
else
{
newPrim.taperX = primData.PathTaperX;
newPrim.taperY = primData.PathTaperY;
newPrim.twistBegin = (int)(360 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(360 * primData.PathTwist);
newPrim.ExtrudeCircular();
}
return(newPrim);
}
/// <summary>
/// Generates a a series of faces, each face containing a mesh and
/// metadata
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh</returns >
public OMVR.FacetedMesh GenerateFacetedMesh(OMV.Primitive prim, OMVR.DetailLevel lod)
{
bool isSphere = ((OMV.ProfileCurve)(prim.PrimData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle);
PrimMesher.PrimMesh newPrim = GeneratePrimMesh(prim, lod, true);
if (newPrim == null)
{
return(null);
}
int numViewerFaces = newPrim.viewerFaces.Count;
int numPrimFaces = newPrim.numPrimFaces;
for (uint i = 0; i < numViewerFaces; i++)
{
PrimMesher.ViewerFace vf = newPrim.viewerFaces[(int)i];
if (isSphere)
{
vf.uv1.U = (vf.uv1.U - 0.5f) * 2.0f;
vf.uv2.U = (vf.uv2.U - 0.5f) * 2.0f;
vf.uv3.U = (vf.uv3.U - 0.5f) * 2.0f;
}
}
// copy the vertex information into OMVR.IRendering structures
OMVR.FacetedMesh omvrmesh = new OMVR.FacetedMesh();
omvrmesh.Faces = new List <OMVR.Face>();
omvrmesh.Prim = prim;
omvrmesh.Profile = new OMVR.Profile();
omvrmesh.Profile.Faces = new List <OMVR.ProfileFace>();
omvrmesh.Profile.Positions = new List <OMV.Vector3>();
omvrmesh.Path = new OMVR.Path();
omvrmesh.Path.Points = new List <OMVR.PathPoint>();
Dictionary <OMV.Vector3, int> vertexAccount = new Dictionary <OMV.Vector3, int>();
for (int ii = 0; ii < numPrimFaces; ii++)
{
OMVR.Face oface = new OMVR.Face();
oface.Vertices = new List <OMVR.Vertex>();
oface.Indices = new List <ushort>();
oface.TextureFace = prim.Textures.GetFace((uint)ii);
int faceVertices = 0;
vertexAccount.Clear();
OMV.Vector3 pos;
int indx;
OMVR.Vertex vert;
foreach (PrimMesher.ViewerFace vface in newPrim.viewerFaces)
{
if (vface.primFaceNumber == ii)
{
faceVertices++;
pos = new OMV.Vector3(vface.v1.X, vface.v1.Y, vface.v1.Z);
if (vertexAccount.ContainsKey(pos))
{
// we aleady have this vertex in the list. Just point the index at it
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
// the vertex is not in the list. Add it and the new index.
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv1.U, 1.0f - vface.uv1.V);
vert.Normal = new OMV.Vector3(vface.n1.X, vface.n1.Y, vface.n1.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
pos = new OMV.Vector3(vface.v2.X, vface.v2.Y, vface.v2.Z);
if (vertexAccount.ContainsKey(pos))
{
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv2.U, 1.0f - vface.uv2.V);
vert.Normal = new OMV.Vector3(vface.n2.X, vface.n2.Y, vface.n2.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
pos = new OMV.Vector3(vface.v3.X, vface.v3.Y, vface.v3.Z);
if (vertexAccount.ContainsKey(pos))
{
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv3.U, 1.0f - vface.uv3.V);
vert.Normal = new OMV.Vector3(vface.n3.X, vface.n3.Y, vface.n3.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
}
}
if (faceVertices > 0)
{
oface.TextureFace = prim.Textures.FaceTextures[ii];
if (oface.TextureFace == null)
{
oface.TextureFace = prim.Textures.DefaultTexture;
}
oface.ID = ii;
omvrmesh.Faces.Add(oface);
}
}
return(omvrmesh);
}
/// <summary>
/// Generates a a series of faces, each face containing a mesh and
/// metadata
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh</returns >
public OMVR.FacetedMesh GenerateFacetedMesh(OMV.Primitive prim, OMVR.DetailLevel lod)
{
OMV.Primitive.ConstructionData primData = prim.PrimData;
int sides = 4;
int hollowsides = 4;
float profileBegin = primData.ProfileBegin;
float profileEnd = primData.ProfileEnd;
bool isSphere = false;
if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
}
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.EqualTriangle)
sides = 3;
else if ((OMV.ProfileCurve)(primData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle)
{
// half circle, prim is a sphere
isSphere = true;
switch (lod)
{
case OMVR.DetailLevel.Low:
sides = 6;
break;
case OMVR.DetailLevel.Medium:
sides = 12;
break;
default:
sides = 24;
break;
}
profileBegin = 0.5f * profileBegin + 0.5f;
profileEnd = 0.5f * profileEnd + 0.5f;
}
if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Same)
hollowsides = sides;
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Circle)
{
switch (lod)
{
case OMVR.DetailLevel.Low:
hollowsides = 6;
break;
case OMVR.DetailLevel.Medium:
hollowsides = 12;
break;
default:
hollowsides = 24;
break;
}
}
else if ((OMV.HoleType)primData.ProfileHole == OMV.HoleType.Triangle)
hollowsides = 3;
PrimMesher.PrimMesh newPrim = new PrimMesher.PrimMesh(sides, profileBegin, profileEnd, (float)primData.ProfileHollow, hollowsides);
newPrim.viewerMode = true;
newPrim.holeSizeX = primData.PathScaleX;
newPrim.holeSizeY = primData.PathScaleY;
newPrim.pathCutBegin = primData.PathBegin;
newPrim.pathCutEnd = primData.PathEnd;
newPrim.topShearX = primData.PathShearX;
newPrim.topShearY = primData.PathShearY;
newPrim.radius = primData.PathRadiusOffset;
newPrim.revolutions = primData.PathRevolutions;
newPrim.skew = primData.PathSkew;
switch (lod)
{
case OMVR.DetailLevel.Low:
newPrim.stepsPerRevolution = 6;
break;
case OMVR.DetailLevel.Medium:
newPrim.stepsPerRevolution = 12;
break;
default:
newPrim.stepsPerRevolution = 24;
break;
}
if ((primData.PathCurve == OMV.PathCurve.Line) || (primData.PathCurve == OMV.PathCurve.Flexible))
{
newPrim.taperX = 1.0f - primData.PathScaleX;
newPrim.taperY = 1.0f - primData.PathScaleY;
newPrim.twistBegin = (int)(180 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(180 * primData.PathTwist);
newPrim.ExtrudeLinear();
}
else
{
newPrim.taperX = primData.PathTaperX;
newPrim.taperY = primData.PathTaperY;
newPrim.twistBegin = (int)(360 * primData.PathTwistBegin);
newPrim.twistEnd = (int)(360 * primData.PathTwist);
newPrim.ExtrudeCircular();
}
int numViewerFaces = newPrim.viewerFaces.Count;
int numPrimFaces = newPrim.numPrimFaces;
for (uint i = 0; i < numViewerFaces; i++)
{
PrimMesher.ViewerFace vf = newPrim.viewerFaces[(int)i];
if (isSphere)
{
vf.uv1.U = (vf.uv1.U - 0.5f) * 2.0f;
vf.uv2.U = (vf.uv2.U - 0.5f) * 2.0f;
vf.uv3.U = (vf.uv3.U - 0.5f) * 2.0f;
}
}
if (m_shouldScale)
{
newPrim.Scale(prim.Scale.X, prim.Scale.Y, prim.Scale.Z);
}
// copy the vertex information into OMVR.IRendering structures
OMVR.FacetedMesh omvrmesh = new OMVR.FacetedMesh();
omvrmesh.Faces = new List<OMVR.Face>();
omvrmesh.Prim = prim;
omvrmesh.Profile = new OMVR.Profile();
omvrmesh.Profile.Faces = new List<OMVR.ProfileFace>();
omvrmesh.Profile.Positions = new List<OMV.Vector3>();
omvrmesh.Path = new OMVR.Path();
omvrmesh.Path.Points = new List<OMVR.PathPoint>();
Dictionary<OMV.Vector3, int> vertexAccount = new Dictionary<OMV.Vector3, int>();
for (int ii = 0; ii < numPrimFaces; ii++)
{
OMVR.Face oface = new OMVR.Face();
oface.Vertices = new List<OMVR.Vertex>();
oface.Indices = new List<ushort>();
oface.TextureFace = prim.Textures.GetFace((uint)ii);
int faceVertices = 0;
vertexAccount.Clear();
OMV.Vector3 pos;
int indx;
OMVR.Vertex vert;
foreach (PrimMesher.ViewerFace vface in newPrim.viewerFaces)
{
if (vface.primFaceNumber == ii)
{
faceVertices++;
pos = new OMV.Vector3(vface.v1.X, vface.v1.Y, vface.v1.Z);
if (vertexAccount.ContainsKey(pos))
{
// we aleady have this vertex in the list. Just point the index at it
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
// the vertex is not in the list. Add it and the new index.
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv1.U, 1.0f - vface.uv1.V);
vert.Normal = new OMV.Vector3(vface.n1.X, vface.n1.Y, vface.n1.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
pos = new OMV.Vector3(vface.v2.X, vface.v2.Y, vface.v2.Z);
if (vertexAccount.ContainsKey(pos))
{
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv2.U, 1.0f - vface.uv2.V);
vert.Normal = new OMV.Vector3(vface.n2.X, vface.n2.Y, vface.n2.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
pos = new OMV.Vector3(vface.v3.X, vface.v3.Y, vface.v3.Z);
if (vertexAccount.ContainsKey(pos))
{
oface.Indices.Add((ushort)vertexAccount[pos]);
}
else
{
vert = new OMVR.Vertex();
vert.Position = pos;
vert.TexCoord = new OMV.Vector2(vface.uv3.U, 1.0f - vface.uv3.V);
vert.Normal = new OMV.Vector3(vface.n3.X, vface.n3.Y, vface.n3.Z);
oface.Vertices.Add(vert);
indx = oface.Vertices.Count - 1;
vertexAccount.Add(pos, indx);
oface.Indices.Add((ushort)indx);
}
}
}
if (faceVertices > 0)
{
oface.TextureFace = prim.Textures.FaceTextures[ii];
if (oface.TextureFace == null)
{
oface.TextureFace = prim.Textures.DefaultTexture;
}
oface.ID = ii;
omvrmesh.Faces.Add(oface);
}
}
return omvrmesh;
}
