//Methods
private void Add(SurfaceData sd, SurfaceBlends.NormalizedBlends blendResults, Color tint, float weightMultiplier, ref float totalWeight)
{
if (weightMultiplier <= 0.0000000001f)
{
return;
}
for (int i = 0; i < blendResults.result.Count; i++)
{
var blend = blendResults.result[i];
blend.color *= tint;
sd.AddBlend(blend, false, weightMultiplier, ref totalWeight);
}
}
internal bool TryAddBlends(SurfaceData sd, Mesh mesh, int submeshID, Vector3 point, int triangleID, out float totalWeight)
{
totalWeight = 0;
//Finds Barycentric
var triangle = triangleID * 3;
var t0 = triangles[triangle + 0];
var t1 = triangles[triangle + 1];
var t2 = triangles[triangle + 2];
var a = vertices[t0];
var b = vertices[t1];
var c = vertices[t2];
point = transform.InverseTransformPoint(point);
var bary = new Barycentric(a, b, c, point);
#if UNITY_EDITOR
lastSampledColors.Clear();
#endif
float totalTotalWeight = 0;
for (int i = 0; i < blendMaps.Length; i++)
{
var bm = blendMaps[i];
bm.sampled = false;
for (int ii = 0; ii < bm.subMaterials.Length; ii++)
{
if (bm.subMaterials[ii].materialID == submeshID)
{
var uv = bary.Interpolate(bm.uvs[t0], bm.uvs[t1], bm.uvs[t2]);
uv = uv * new Vector2(bm.uvScaleOffset.x, bm.uvScaleOffset.y) + new Vector2(bm.uvScaleOffset.z, bm.uvScaleOffset.w); //?
Color color = bm.map.GetPixelBilinear(uv.x, uv.y); //this only works for clamp or repeat btw (not mirror etc.)
bm.sampledColor = color;
void SampleColor(BlendMap.SurfaceBlends2 sb2)
{
if (sb2.colorMap != null)
{
sb2.sampledColor = sb2.colorMap.GetPixelBilinear(uv.x, uv.y);
}
else
{
sb2.sampledColor = Color.white;
}
}
SampleColor(bm.r);
SampleColor(bm.g);
SampleColor(bm.b);
SampleColor(bm.a);
totalTotalWeight += bm.weight * (color.r + color.g + color.b + color.a);
#if UNITY_EDITOR
lastSampledColors.Add(color);
#endif
bm.sampled = true;
break;
}
}
}
if (totalTotalWeight > 0)
{
float invTotalTotal = 1f / totalTotalWeight;
for (int i = 0; i < blendMaps.Length; i++)
{
var bm = blendMaps[i];
if (bm.sampled)
{
float invTotal = bm.weight * invTotalTotal;
var color = bm.sampledColor;
Add(sd, bm.r.result, bm.r.sampledColor, color.r * invTotal, ref totalWeight);
Add(sd, bm.g.result, bm.g.sampledColor, color.g * invTotal, ref totalWeight);
Add(sd, bm.b.result, bm.b.sampledColor, color.b * invTotal, ref totalWeight);
Add(sd, bm.a.result, bm.a.sampledColor, color.a * invTotal, ref totalWeight);
}
}
return(true);
}
return(false);
}
