public static void CalculateWeights(this SpriteMeshData spriteMeshData, IWeightsGenerator weightsGenerator, ISelection selection, float filterTolerance)
{
Vector2[] controlPoints;
Edge[] bones;
int[] pins;
spriteMeshData.GetControlPoints(out controlPoints, out bones, out pins);
Vector2[] vertices = new Vector2[spriteMeshData.vertices.Count];
for (int i = 0; i < spriteMeshData.vertices.Count; ++i)
{
vertices[i] = spriteMeshData.vertices[i].position;
}
BoneWeight[] boneWeights = weightsGenerator.Calculate(vertices, spriteMeshData.edges.ToArray(), controlPoints, bones, pins);
Debug.Assert(boneWeights.Length == spriteMeshData.vertices.Count);
for (int i = 0; i < spriteMeshData.vertices.Count; ++i)
{
if (selection == null || (selection.Count == 0 || selection.IsSelected(i)))
{
EditableBoneWeight editableBoneWeight = EditableBoneWeightUtility.CreateFromBoneWeight(boneWeights[i]);
if (filterTolerance > 0f)
{
editableBoneWeight.FilterChannels(filterTolerance);
editableBoneWeight.NormalizeChannels();
}
spriteMeshData.vertices[i].editableBoneWeight = editableBoneWeight;
}
}
}
private static EditableBoneWeight Lerp(EditableBoneWeight first, EditableBoneWeight second, float t)
{
EditableBoneWeight result = new EditableBoneWeight();
foreach (BoneWeightChannel channel in first)
{
if (!channel.enabled)
{
continue;
}
BoneWeightData data = channel.boneWeightData;
data.weight *= (1f - t);
if (data.weight > 0f)
{
result.AddChannel(data, true);
}
}
foreach (BoneWeightChannel channel in second)
{
if (!channel.enabled)
{
continue;
}
BoneWeightData data = channel.boneWeightData;
data.weight *= t;
if (data.weight > 0f)
{
result.AddChannel(data, true);
}
}
result.UnifyChannelsWithSameBoneIndex();
if (result.GetWeightSum() > 1f)
{
result.NormalizeChannels();
}
result.FilterChannels(0f);
result.ClampChannels(4, true);
return(result);
}
private void SetWeight(float value, bool createNewChannel = true)
{
if (boneIndex == -1)
{
return;
}
Debug.Assert(selection != null);
for (int i = 0; i < spriteMeshData.vertices.Count; ++i)
{
if (selection.Count == 0 && emptySelectionEditsAll ||
selection.Count > 0 && selection.IsSelected(i))
{
EditableBoneWeight editableBoneWeight = spriteMeshData.vertices[i].editableBoneWeight;
int channel = editableBoneWeight.GetChannelFromBoneIndex(boneIndex);
if (channel == -1)
{
if (createNewChannel)
{
editableBoneWeight.AddChannel(new BoneWeightData(boneIndex, 0f), true);
channel = editableBoneWeight.GetChannelFromBoneIndex(boneIndex);
}
else
{
continue;
}
}
BoneWeightData data = editableBoneWeight.GetBoneWeightData(channel);
data.weight += value;
editableBoneWeight.SetBoneWeightData(channel, data);
if (editableBoneWeight.GetWeightSum() > 1f)
{
editableBoneWeight.CompensateOtherChannels(channel);
}
editableBoneWeight.FilterChannels(0f);
}
}
}
private static void Lerp(EditableBoneWeight first, EditableBoneWeight second, ref EditableBoneWeight result, float t)
{
result.Clear();
foreach (BoneWeightChannel channel in first)
{
if (!channel.enabled)
{
continue;
}
var weight = channel.weight * (1f - t);
if (weight > 0f)
{
result.AddChannel(channel.boneIndex, weight, true);
}
}
foreach (BoneWeightChannel channel in second)
{
if (!channel.enabled)
{
continue;
}
var weight = channel.weight * t;
if (weight > 0f)
{
result.AddChannel(channel.boneIndex, weight, true);
}
}
result.UnifyChannelsWithSameBoneIndex();
result.Clamp(4);
if (result.Sum() > 1f)
{
result.Normalize();
}
result.FilterChannels(0f);
}
private void CreateVertex(Vector2 position, int edgeIndex)
{
position = MeshModuleUtility.ClampPositionToRect(position, spriteMeshData.frame);
undoObject.RegisterCompleteObjectUndo("Create Vertex");
BoneWeight boneWeight = new BoneWeight();
Vector3Int indices;
Vector3 barycentricCoords;
if (spriteMeshData.FindTriangle(position, out indices, out barycentricCoords))
{
EditableBoneWeight bw1 = spriteMeshData.vertices[indices.x].editableBoneWeight;
EditableBoneWeight bw2 = spriteMeshData.vertices[indices.y].editableBoneWeight;
EditableBoneWeight bw3 = spriteMeshData.vertices[indices.z].editableBoneWeight;
EditableBoneWeight result = new EditableBoneWeight();
foreach (BoneWeightChannel channel in bw1)
{
if (!channel.enabled)
{
continue;
}
BoneWeightData data = channel.boneWeightData;
data.weight *= barycentricCoords.x;
if (data.weight > 0f)
{
result.AddChannel(data, true);
}
}
foreach (BoneWeightChannel channel in bw2)
{
if (!channel.enabled)
{
continue;
}
BoneWeightData data = channel.boneWeightData;
data.weight *= barycentricCoords.y;
if (data.weight > 0f)
{
result.AddChannel(data, true);
}
}
foreach (BoneWeightChannel channel in bw3)
{
if (!channel.enabled)
{
continue;
}
BoneWeightData data = channel.boneWeightData;
data.weight *= barycentricCoords.z;
if (data.weight > 0f)
{
result.AddChannel(data, true);
}
}
result.UnifyChannelsWithSameBoneIndex();
result.FilterChannels(0f);
result.ClampChannels(4, true);
boneWeight = result.ToBoneWeight(true);
}
else if (edgeIndex != -1)
{
Edge edge = spriteMeshData.edges[edgeIndex];
Vector2 pos1 = spriteMeshData.vertices[edge.index1].position;
Vector2 pos2 = spriteMeshData.vertices[edge.index2].position;
Vector2 dir1 = (position - pos1);
Vector2 dir2 = (pos2 - pos1);
float t = Vector2.Dot(dir1, dir2.normalized) / dir2.magnitude;
t = Mathf.Clamp01(t);
BoneWeight bw1 = spriteMeshData.vertices[edge.index1].editableBoneWeight.ToBoneWeight(true);
BoneWeight bw2 = spriteMeshData.vertices[edge.index2].editableBoneWeight.ToBoneWeight(true);
boneWeight = EditableBoneWeightUtility.Lerp(bw1, bw2, t);
}
spriteMeshData.CreateVertex(position, edgeIndex);
spriteMeshData.vertices[spriteMeshData.vertices.Count - 1].editableBoneWeight.SetFromBoneWeight(boneWeight);
spriteMeshData.Triangulate(triangulator);
}
private void CreateVertex(Vector2 position, int edgeIndex)
{
position = MathUtility.ClampPositionToRect(position, frame);
cacheUndo.BeginUndoOperation(TextContent.createVertex);
BoneWeight boneWeight = new BoneWeight();
Vector3Int indices;
Vector3 barycentricCoords;
if (m_SpriteMeshDataController.FindTriangle(position, out indices, out barycentricCoords))
{
EditableBoneWeight bw1 = m_SpriteMeshData.GetWeight(indices.x);
EditableBoneWeight bw2 = m_SpriteMeshData.GetWeight(indices.y);
EditableBoneWeight bw3 = m_SpriteMeshData.GetWeight(indices.z);
EditableBoneWeight result = new EditableBoneWeight();
foreach (BoneWeightChannel channel in bw1)
{
if (!channel.enabled)
{
continue;
}
var weight = channel.weight * barycentricCoords.x;
if (weight > 0f)
{
result.AddChannel(channel.boneIndex, weight, true);
}
}
foreach (BoneWeightChannel channel in bw2)
{
if (!channel.enabled)
{
continue;
}
var weight = channel.weight * barycentricCoords.y;
if (weight > 0f)
{
result.AddChannel(channel.boneIndex, weight, true);
}
}
foreach (BoneWeightChannel channel in bw3)
{
if (!channel.enabled)
{
continue;
}
var weight = channel.weight * barycentricCoords.z;
if (weight > 0f)
{
result.AddChannel(channel.boneIndex, weight, true);
}
}
result.UnifyChannelsWithSameBoneIndex();
result.FilterChannels(0f);
result.Clamp(4, true);
boneWeight = result.ToBoneWeight(true);
}
else if (edgeIndex != -1)
{
Edge edge = m_SpriteMeshData.edges[edgeIndex];
Vector2 pos1 = m_SpriteMeshData.GetPosition(edge.index1);
Vector2 pos2 = m_SpriteMeshData.GetPosition(edge.index2);
Vector2 dir1 = (position - pos1);
Vector2 dir2 = (pos2 - pos1);
float t = Vector2.Dot(dir1, dir2.normalized) / dir2.magnitude;
t = Mathf.Clamp01(t);
BoneWeight bw1 = m_SpriteMeshData.GetWeight(edge.index1).ToBoneWeight(true);
BoneWeight bw2 = m_SpriteMeshData.GetWeight(edge.index2).ToBoneWeight(true);
boneWeight = EditableBoneWeightUtility.Lerp(bw1, bw2, t);
}
m_SpriteMeshDataController.CreateVertex(position, edgeIndex);
m_SpriteMeshData.GetWeight(m_SpriteMeshData.vertexCount - 1).SetFromBoneWeight(boneWeight);
Triangulate();
}
