public static void BuildMeshFromNodeHandleForColoredCubesVolume(Mesh mesh, uint nodeHandle, bool onlyPositions)
{
// Get the data from Cubiquity.
ColoredCubesVertex[] vertices;
ushort[] indices;
CubiquityDLL.GetMesh <ColoredCubesVertex>(nodeHandle, out vertices, out indices);
int noOfVertices = vertices.Length;
int noOfIndices = indices.Length;
#endif
// Cubiquity uses 16-bit index arrays to save space, and it appears Unity does the same (at least, there is
// a limit of 65535 vertices per mesh). However, the Mesh.triangles property is of the signed 32-bit int[]
// type rather than the unsigned 16-bit ushort[] type. Perhaps this is so they can switch to 32-bit index
// buffers in the future? At any rate, it means we have to perform a conversion.
int[] indicesAsInt = new int[noOfIndices];
for (int ct = 0; ct < noOfIndices; ct++)
{
indicesAsInt[ct] = indices[ct];
}
// Clear any previous mesh data.
mesh.Clear(true);
// Required for the CubicVertex decoding process.
Vector3 offset = new Vector3(0.5f, 0.5f, 0.5f);
// Copy the vertex positions from Cubiquity into the Unity mesh.
Vector3[] positions = new Vector3[noOfVertices];
for (int ct = 0; ct < noOfVertices; ct++)
{
// Get and decode the position
positions[ct].Set(vertices[ct].x, vertices[ct].y, vertices[ct].z);
positions[ct] -= offset;
}
// Assign vertex data to the mesh.
mesh.vertices = positions;
// For collision meshes the vertex positions are enough, but
// for meshes which are rendered we want all vertex attributes.
if (!onlyPositions)
{
Color32[] colors32 = new Color32[noOfVertices];
for (int ct = 0; ct < noOfVertices; ct++)
{
// Get and decode the color
colors32[ct] = (Color32)vertices[ct].color;
}
// Assign vertex data to the mesh.
mesh.colors32 = colors32;
}
// Assign index data to the mesh.
mesh.triangles = indicesAsInt;
}
public static void BuildMeshFromNodeHandleForTerrainVolume(Mesh mesh, uint nodeHandle, bool onlyPositions)
{
// Get the data from Cubiquity.
TerrainVertex[] vertices;
ushort[] indices;
CubiquityDLL.GetMesh <TerrainVertex>(nodeHandle, out vertices, out indices);
int noOfVertices = vertices.Length;
int noOfIndices = indices.Length;
#endif
// Cubiquity uses 16-bit index arrays to save space, and it appears Unity does the same (at least, there is
// a limit of 65535 vertices per mesh). However, the Mesh.triangles property is of the signed 32-bit int[]
// type rather than the unsigned 16-bit ushort[] type. Perhaps this is so they can switch to 32-bit index
// buffers in the future? At any rate, it means we have to perform a conversion.
int[] indicesAsInt = new int[noOfIndices];
for (int ct = 0; ct < noOfIndices; ct++)
{
indicesAsInt[ct] = indices[ct];
}
// Clear any previous mesh data.
mesh.Clear(true);
// Create the arrays which we'll copy the data to.
Vector3[] positions = new Vector3[noOfVertices];
Vector3[] normals = new Vector3[noOfVertices];
Color32[] colors32 = new Color32[noOfVertices];
Vector2[] uv = new Vector2[noOfVertices];
Vector2[] uv2 = new Vector2[noOfVertices];
// Copy the vertex positions from Cubiquity into the Unity mesh.
for (int ct = 0; ct < noOfVertices; ct++)
{
// Get and decode the position
positions[ct].Set(vertices[ct].x, vertices[ct].y, vertices[ct].z);
positions[ct] *= (1.0f / 256.0f);
}
// Assign vertex data to the mesh.
mesh.vertices = positions;
// For collision meshes the vertex positions are enough, but
// for meshes which are rendered we want all vertex attributes.
if (!onlyPositions)
{
for (int ct = 0; ct < noOfVertices; ct++)
{
// Get the materials. Some are stored in color...
colors32[ct].r = vertices[ct].m0;
colors32[ct].g = vertices[ct].m1;
colors32[ct].b = vertices[ct].m2;
colors32[ct].a = vertices[ct].m3;
// And some are stored in UVs.
uv[ct].Set(vertices[ct].m4 / 255.0f, vertices[ct].m5 / 255.0f);
uv2[ct].Set(vertices[ct].m6 / 255.0f, vertices[ct].m7 / 255.0f);
// Get and decode the normal
ushort ux = (ushort)((vertices[ct].normal >> (ushort)8) & (ushort)0xFF);
ushort uy = (ushort)((vertices[ct].normal) & (ushort)0xFF);
// Convert to floats in the range [-1.0f, +1.0f].
float ex = ux * (1.0f / 127.5f) - 1.0f;
float ey = uy * (1.0f / 127.5f) - 1.0f;
// Reconstruct the origninal vector. This is a C++ implementation
// of Listing 2 of http://jcgt.org/published/0003/02/01/
float vx = ex;
float vy = ey;
float vz = 1.0f - Math.Abs(ex) - Math.Abs(ey);
if (vz < 0.0f)
{
float refX = ((1.0f - Math.Abs(vy)) * (vx >= 0.0f ? +1.0f : -1.0f));
float refY = ((1.0f - Math.Abs(vx)) * (vy >= 0.0f ? +1.0f : -1.0f));
vx = refX;
vy = refY;
}
normals[ct].Set(vx, vy, vz);
}
// Assign vertex data to the mesh.
mesh.normals = normals;
mesh.colors32 = colors32;
mesh.uv = uv;
mesh.uv2 = uv2;
}
// Assign index data to the mesh.
mesh.triangles = indicesAsInt;
}
