/**
* Copy constructor.
*/
public z_SplatSet(z_SplatSet other)
{
int attribCount = other.attributeCount;
this.attributeLayout = new z_AttributeLayout[attribCount];
System.Array.Copy(other.attributeLayout, 0, this.attributeLayout, 0, attribCount);
this.channelMap = new Dictionary <z_MeshChannel, int>();
foreach (var kvp in other.channelMap)
{
this.channelMap.Add(kvp.Key, kvp.Value);
}
int channelCount = other.channelMap.Count;
this.weightCount = other.weightCount;
this.weights = new Vector4[channelCount][];
for (int i = 0; i < channelCount; i++)
{
this.weights[i] = new Vector4[weightCount];
System.Array.Copy(other.weights[i], this.weights[i], weightCount);
}
}
public void LerpWeights(z_SplatSet lhs, z_SplatWeight rhs, float alpha)
{
for (int i = 0; i < weightCount; i++)
{
foreach (var cm in channelMap)
{
this.weights[cm.Value][i] = Vector4.LerpUnclamped(lhs.weights[cm.Value][i], rhs[cm.Key], alpha);
}
}
}
public void CopyTo(z_SplatSet other)
{
if (other.weightCount != weightCount)
{
Debug.LogError("Copying splat set to mis-matched container length");
return;
}
for (int i = 0; i < channelMap.Count; i++)
{
System.Array.Copy(this.weights[i], other.weights[i], weightCount);
}
}
/**
* Lerp each attribute value with matching `mask` to `rhs`.
* weights, lhs, and rhs must have matching layout attributes.
*/
public void LerpWeights(z_SplatSet lhs, z_SplatSet rhs, int mask, float[] alpha)
{
Dictionary <int, uint> affected = new Dictionary <int, uint>();
foreach (z_AttributeLayout al in attributeLayout)
{
int mapIndex = channelMap[al.channel];
if (al.mask == mask)
{
if (!affected.ContainsKey(mapIndex))
{
affected.Add(mapIndex, al.index.ToFlag());
}
else
{
affected[mapIndex] |= al.index.ToFlag();
}
}
}
foreach (var v in affected)
{
Vector4[] a = lhs.weights[v.Key];
Vector4[] b = rhs.weights[v.Key];
Vector4[] c = weights[v.Key];
for (int i = 0; i < weightCount; i++)
{
if ((v.Value & 1) != 0)
{
c[i].x = Mathf.Lerp(a[i].x, b[i].x, alpha[i]);
}
if ((v.Value & 2) != 0)
{
c[i].y = Mathf.Lerp(a[i].y, b[i].y, alpha[i]);
}
if ((v.Value & 4) != 0)
{
c[i].z = Mathf.Lerp(a[i].z, b[i].z, alpha[i]);
}
if ((v.Value & 8) != 0)
{
c[i].w = Mathf.Lerp(a[i].w, b[i].w, alpha[i]);
}
}
}
}
private void RebuildCaches(z_Mesh m, float strength)
{
vertexCount = m.vertexCount;
triangleLookup = z_MeshUtility.GetAdjacentTriangles(m);
if (meshAttributes == null)
{
// clear caches
splat_cache = null;
splat_current = null;
splat_target = null;
splat_erase = null;
return;
}
splat_cache = new z_SplatSet(m, meshAttributes);
splat_current = new z_SplatSet(splat_cache);
splat_target = new z_SplatSet(vertexCount, meshAttributes);
splat_erase = new z_SplatSet(vertexCount, meshAttributes);
}
private void RebuildCaches(Mesh m, z_BrushSettings settings)
{
vertexCount = m.vertexCount;
colors_cache = new z_SplatSet(m, meshAttributes);
colors = new z_SplatSet(vertexCount, meshAttributes);
target_colors = new z_SplatSet(vertexCount, meshAttributes);
erase_colors = new z_SplatSet(vertexCount, meshAttributes);
triangleLookup = z_MeshUtility.GetAdjacentTriangles(m);
for(int i = 0; i < colors_cache.Length; i++)
{
target_colors[i] = z_SplatWeight.Lerp(colors_cache[i], brushColor, settings.strength);
erase_colors[i] = z_SplatWeight.Lerp(colors_cache[i], z_SplatWeight.Channel0, settings.strength);
}
}
public void CopyTo(z_SplatSet other)
{
if(other.Length != Length)
{
Debug.LogWarning("Copying splat weights to mismatched container length.");
other.weights = new z_SplatWeight[Length];
}
System.Array.Copy(weights, other.weights, Length);
}