private static void FindSharpComponentSections(VoxelMeshComponent component, NativeList <PackedIndex> componentIndices, NativeList <VoxelMeshComponentVertex> componentVertices,
NativeList <SharpSection> sharpSections, NativeList <float3> sharpSectionNormals)
{
if (component.RegularFeature)
{
int sharpSectionStart = -1;
float normalSumX = 0.0f;
float normalSumY = 0.0f;
float normalSumZ = 0.0f;
for (int i = 0; i < component.Size * 2; i++)
{
int j = i % component.Size;
PackedIndex index = componentIndices[component.Index + j];
float3 n = componentVertices[index].Normal;
if (index.Is2DSharpFeature)
{
if (sharpSectionStart != -1)
{
float3 sharpSectionNormal = math.normalize(new float3(normalSumX, normalSumY, normalSumZ));
if (j < sharpSectionStart)
{
sharpSections.Add(new SharpSection(j, component.Size));
sharpSectionNormals.Add(sharpSectionNormal);
sharpSections.Add(new SharpSection(1, sharpSectionStart));
sharpSectionNormals.Add(sharpSectionNormal);
}
else
{
sharpSections.Add(new SharpSection(sharpSectionStart, j));
sharpSectionNormals.Add(sharpSectionNormal);
}
}
sharpSectionStart = j;
normalSumX = normalSumY = normalSumZ = 0.0f;
}
else if (sharpSectionStart != -1 && index.IsNormalSet)
{
normalSumX += n.x;
normalSumY += n.y;
normalSumZ += n.z;
}
}
}
}
public static void DrawDebugGizmos <TCell, TColorMap>(
Vector3 position, Matrix4x4 transform, List <VoxelMeshComponent> components, List <PackedIndex> componentIndices,
List <VoxelMeshComponentVertex> componentVertices, ref TCell voxelCell, TColorMap materialColors, Mesh voxelMesh = null)
where TCell : struct, IVoxelCell
where TColorMap : struct, IMaterialColorMap
{
Matrix4x4 translatedTransform = Matrix4x4.Translate(position) * transform;
Gizmos.matrix = translatedTransform;
if (voxelMesh != null)
{
Gizmos.color = new Color(1, 0, 0);
Gizmos.DrawWireMesh(voxelMesh);
}
Gizmos.matrix = transform;
for (int i = 0; i < components.Count; i++)
{
var component = components[i];
if (component.RegularFeature)
{
Gizmos.color = Color.black;
Gizmos.DrawSphere(component.FeatureVertex, 0.015f);
Gizmos.color = new Color(1, 1, 0);
Gizmos.DrawSphere(component.FeatureVertex, 0.01f);
}
else if (component.MaterialTransitionFeature)
{
Gizmos.color = Color.black;
Gizmos.DrawSphere(component.FeatureVertex, 0.015f);
Gizmos.color = new Color(0.2f, 0.8f, 1);
Gizmos.DrawSphere(component.FeatureVertex, 0.01f);
}
//Centroid/Feature point normal
if (!component.RegularFeature)
{
float3 triangleFanCenter = float3.zero;
int vertexCount = 0;
for (int j = component.Index; j < component.Index + component.Size; j++)
{
triangleFanCenter += (float3)componentVertices[componentIndices[j]].Position;
vertexCount++;
}
triangleFanCenter *= 1f / vertexCount;
float3 fullAverageNormal = float3.zero;
for (int j = component.Index; j < component.Index + component.Size; j++)
{
PackedIndex packedIndex = componentIndices[j];
if (packedIndex.IsNormalSet)
{
VoxelMeshComponentVertex meshVertex = componentVertices[packedIndex];
fullAverageNormal += meshVertex.Normal / math.length(meshVertex.Position - triangleFanCenter);
}
}
fullAverageNormal = math.normalize(fullAverageNormal);
Gizmos.color = new Color(1, 0, 1);
Gizmos.DrawRay(component.FeatureVertex, fullAverageNormal * 0.25f);
}
//TODO Render individual normals for RegularFeatures
for (int j = component.Index; j < component.Index + component.Size; j++)
{
var packedIndex = componentIndices[j];
if (packedIndex.IsMaterialTransition)
{
var meshVertex = componentVertices[packedIndex];
Gizmos.color = Color.black;
Gizmos.DrawSphere(meshVertex.Position, 0.015f);
Gizmos.color = new Color(0, 1, 1);
Gizmos.DrawSphere(meshVertex.Position, 0.01f);
Gizmos.DrawRay(meshVertex.Position, meshVertex.Normal * 0.25f);
}
}
}
float width = voxelCell.GetWidth();
float height = voxelCell.GetHeight();
float depth = voxelCell.GetDepth();
Gizmos.matrix = translatedTransform;
Gizmos.color = new Color(1, 0, 0);
Gizmos.DrawWireCube(new Vector3(width / 2f, height / 2f, depth / 2f), new Vector3(width, height, depth));
Gizmos.matrix = transform;
foreach (VoxelCellFace face in Enum.GetValues(typeof(VoxelCellFace)))
{
var cellCount = voxelCell.GetCellFaceCount(face);
for (int k = 0; k < cellCount; k++)
{
int cell = voxelCell.GetCellFace(face, k);
CellInfo info = voxelCell.GetInfo(cell);
var edges = voxelCell.GetEdges(cell);
var materials = voxelCell.GetMaterials(cell);
for (int i = 0; i < 4; i++)
{
var edge = edges[i];
float cx, cy;
switch (i)
{
default:
case 0:
cx = 0;
cy = 0;
break;
case 1:
cx = info.Width;
cy = 0;
break;
case 2:
cx = info.Width;
cy = info.Height;
break;
case 3:
cx = 0;
cy = info.Height;
break;
}
Vector3 cornerPos = info.Position + face.BasisX() * cx + face.BasisY() * cy;
Gizmos.color = Color.black;
Gizmos.DrawCube(cornerPos, 0.06f * Vector3.one);
Gizmos.color = materialColors.GetColor(materials[i]);
Gizmos.DrawCube(cornerPos, 0.05f * Vector3.one);
if (voxelCell.HasIntersection(cell, edge))
{
var intersection = voxelCell.GetIntersection(cell, edge);
float ix, iy;
switch (i)
{
default:
case 0:
ix = intersection;
iy = 0;
break;
case 1:
ix = info.Width;
iy = intersection;
break;
case 2:
ix = info.Width - intersection;
iy = info.Height;
break;
case 3:
ix = 0;
iy = info.Height - intersection;
break;
}
Vector3 intersectionPos = info.Position + face.BasisX() * ix + face.BasisY() * iy;
float3 edgeStart, edgeEnd;
switch (i)
{
default:
case 0:
edgeStart = info.Position;
edgeEnd = info.Position + face.BasisX() * 1;
break;
case 1:
edgeStart = info.Position + face.BasisX() * 1;
edgeEnd = info.Position + face.BasisX() * 1 + face.BasisY() * 1;
break;
case 2:
edgeStart = info.Position + face.BasisX() * 1 + face.BasisY() * 1;
edgeEnd = info.Position + face.BasisY() * 1;
break;
case 3:
edgeStart = info.Position + face.BasisY() * 1;
edgeEnd = info.Position;
break;
}
Gizmos.color = Color.yellow;
Gizmos.DrawRay(edgeStart, edgeEnd - edgeStart);
Gizmos.color = Color.black;
Gizmos.DrawSphere(intersectionPos, 0.015f);
Gizmos.color = new Color(1, 0, 1);
Gizmos.DrawSphere(intersectionPos, 0.01f);
Vector3 normal = voxelCell.GetNormal(cell, edge);
Gizmos.DrawRay(intersectionPos, normal * 0.25f);
Camera cam = Camera.current;
if (cam != null)
{
int facing = GetFacing(cam.transform.forward);
Vector3 planeX;
Vector3 planeY;
Gizmos.color = new Color(0, 0, 0);
switch (facing)
{
default:
case 0:
planeX = new Vector3(0, 0, 1);
planeY = new Vector3(0, 1, 0);
Gizmos.DrawCube(intersectionPos, new Vector3(0.001f, 0.085f, 0.085f));
Gizmos.color = new Color(1, 0, 0);
Gizmos.DrawCube(intersectionPos, new Vector3(0.001f, 0.075f, 0.075f));
break;
case 1:
planeX = new Vector3(0, 0, 1);
planeY = new Vector3(1, 0, 0);
Gizmos.DrawCube(intersectionPos, new Vector3(0.085f, 0.001f, 0.085f));
Gizmos.color = new Color(0, 1, 0);
Gizmos.DrawCube(intersectionPos, new Vector3(0.075f, 0.001f, 0.075f));
break;
case 2:
planeX = new Vector3(1, 0, 0);
planeY = new Vector3(0, 1, 0);
Gizmos.DrawCube(intersectionPos, new Vector3(0.085f, 0.085f, 0.001f));
Gizmos.color = new Color(0, 0, 1);
Gizmos.DrawCube(intersectionPos, new Vector3(0.075f, 0.075f, 0.001f));
break;
}
Vector3 projectedNormal = planeX * Vector3.Dot(planeX, normal) + planeY * Vector3.Dot(planeY, normal);
projectedNormal.Normalize();
Gizmos.DrawRay(intersectionPos, projectedNormal * 0.15f);
}
}
}
}
}
Gizmos.matrix = Matrix4x4.identity;
Gizmos.color = new Color(1, 1, 1);
}
public static void Tessellate(VoxelMeshComponent component, NativeList <PackedIndex> componentIndices, NativeList <VoxelMeshComponentVertex> componentVertices,
Matrix4x4 transform, NativeList <float3> vertices, int freeTriIndex, NativeList <int> triIndices,
NativeList <float3> normals, NativeList <int> materials, NativeDeduplicationCache dedupeCache)
{
float3 triangleFanCenter;
if (component.Feature)
{
triangleFanCenter = component.FeatureVertex;
}
else
{
triangleFanCenter = float3.zero;
int vertexCount = 0;
for (int i = component.Index; i < component.Index + component.Size; i++)
{
triangleFanCenter += (float3)componentVertices[componentIndices[i]].Position;
vertexCount++;
}
triangleFanCenter *= 1f / vertexCount;
}
if (component.RegularFeature)
{
var sharpSections = new NativeList <SharpSection>(Allocator.Temp);
var sharpSectionNormals = new NativeList <float3>(Allocator.Temp);
FindSharpComponentSections(component, componentIndices, componentVertices, sharpSections, sharpSectionNormals);
for (int i = component.Index; i < component.Index + component.Size; i++)
{
PackedIndex packedIndex1 = componentIndices[i];
VoxelMeshComponentVertex meshVertex1 = componentVertices[packedIndex1];
float3 v1 = meshVertex1.Position;
float3 n1 = meshVertex1.Normal;
int m1 = meshVertex1.Material;
PackedIndex packedIndex2 = componentIndices[component.Index + ((i + 1 - component.Index) % component.Size)];
VoxelMeshComponentVertex meshVertex2 = componentVertices[packedIndex2];
float3 v2 = meshVertex2.Position;
float3 n2 = meshVertex2.Normal;
int m2 = meshVertex2.Material;
float3 faceAverageNormal = float3.zero;
if (packedIndex1.IsNormalSet)
{
faceAverageNormal += n1 / math.length(v1 - triangleFanCenter);
}
if (packedIndex2.IsNormalSet)
{
faceAverageNormal += n2 / math.length(v2 - triangleFanCenter);
}
faceAverageNormal = math.normalize(faceAverageNormal);
float3 triangleFanCenterNormal = float3.zero;
bool triangleFanCenterNormalSet = false;
//Find the normal of the section we're in
for (int count = sharpSections.Length, j = 0; j < count; j++)
{
SharpSection section = sharpSections[j];
if (i >= section.startIndex && i < section.endIndex)
{
triangleFanCenterNormal = sharpSectionNormals[j];
triangleFanCenterNormalSet = true;
}
}
if (!triangleFanCenterNormalSet)
{
triangleFanCenterNormal = faceAverageNormal;
}
var outV2 = transform.MultiplyPoint(triangleFanCenter);
var outN2 = transform.MultiplyVector(triangleFanCenterNormal);
var outV1 = transform.MultiplyPoint(v1);
float3 outN1;
if (packedIndex1.IsNormalSet)
{
outN1 = transform.MultiplyVector(n1);
}
else
{
outN1 = outN2;
}
if (Deduplicate(outV1, outN1, m1, freeTriIndex, dedupeCache, out int outI1))
{
triIndices.Add(outI1);
}
else
{
vertices.Add(outV1);
normals.Add(outN1);
materials.Add(m1);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
if (Deduplicate(outV2, outN2, m1, freeTriIndex, dedupeCache, out int outI2))
{
triIndices.Add(outI2);
}
else
{
vertices.Add(outV2);
normals.Add(outN2);
materials.Add(m1);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
var outV3 = transform.MultiplyPoint(v2);
float3 outN3;
if (packedIndex2.IsNormalSet)
{
outN3 = transform.MultiplyVector(n2);
}
else
{
outN3 = outN2;
}
if (Deduplicate(outV3, outN3, m2, freeTriIndex, dedupeCache, out int outI3))
{
triIndices.Add(outI3);
}
else
{
vertices.Add(outV3);
normals.Add(outN3);
materials.Add(m2);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
}
DisposeManaged(sharpSections);
DisposeManaged(sharpSectionNormals);
}
else
{
float3 fullAverageNormal = float3.zero;
for (int i = component.Index; i < component.Index + component.Size; i++)
{
PackedIndex packedIndex = componentIndices[i];
if (packedIndex.IsNormalSet)
{
VoxelMeshComponentVertex meshVertex = componentVertices[packedIndex];
fullAverageNormal += meshVertex.Normal / math.length(meshVertex.Position - triangleFanCenter);
}
}
fullAverageNormal = math.normalize(fullAverageNormal);
for (int i = component.Index; i < component.Index + component.Size; i++)
{
PackedIndex packedIndex1 = componentIndices[i];
VoxelMeshComponentVertex meshVertex1 = componentVertices[packedIndex1];
float3 v1 = meshVertex1.Position;
float3 n1 = meshVertex1.Normal;
int m1 = meshVertex1.Material;
PackedIndex packedIndex2 = componentIndices[component.Index + ((i + 1 - component.Index) % component.Size)];
VoxelMeshComponentVertex meshVertex2 = componentVertices[packedIndex2];
float3 v2 = meshVertex2.Position;
float3 n2 = meshVertex2.Normal;
int m2 = meshVertex2.Material;
float3 faceAverageNormal = float3.zero;
if (packedIndex1.IsNormalSet)
{
faceAverageNormal += n1 / math.length(v1 - triangleFanCenter);
}
if (packedIndex2.IsNormalSet)
{
faceAverageNormal += n2 / math.length(v2 - triangleFanCenter);
}
faceAverageNormal = math.normalize(faceAverageNormal);
var outV1 = transform.MultiplyPoint(v1);
float3 outN1;
if (packedIndex1.IsNormalSet)
{
outN1 = transform.MultiplyVector(n1);
}
else
{
outN1 = transform.MultiplyVector(faceAverageNormal);
}
if (Deduplicate(outV1, outN1, m1, freeTriIndex, dedupeCache, out int outI1))
{
triIndices.Add(outI1);
}
else
{
vertices.Add(outV1);
normals.Add(outN1);
materials.Add(m1);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
var outV2 = transform.MultiplyPoint(triangleFanCenter);
var outN2 = transform.MultiplyVector(fullAverageNormal);
if (Deduplicate(outV2, outN2, m1, freeTriIndex, dedupeCache, out int outI2))
{
triIndices.Add(outI2);
}
else
{
vertices.Add(outV2);
normals.Add(outN2);
materials.Add(m1);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
var outV3 = transform.MultiplyPoint(v2);
float3 outN3;
if (packedIndex2.IsNormalSet)
{
outN3 = transform.MultiplyVector(n2);
}
else
{
outN3 = transform.MultiplyVector(faceAverageNormal);
}
if (Deduplicate(outV3, outN3, m2, freeTriIndex, dedupeCache, out int outI3))
{
triIndices.Add(outI3);
}
else
{
vertices.Add(outV3);
normals.Add(outN3);
materials.Add(m2);
triIndices.Add(freeTriIndex);
freeTriIndex++;
}
}
}
}