/// <summary>
/// This function will get used by importers for example if there were only strand vertex positions available.
/// It will calculate everything inside of the HairStrand and HairStrandVertex based off the vertex positions.
/// It also calculates the bounding sphere parameters.
/// </summary>
public void PrepareSimulationParameters()
{
this.BranchingAvoidance();
int hairIndexCounter = 0;
// Forward this call to all meshes
foreach (HairMesh m in this.meshes)
{
if (m != null)
{
m.PrepareSimulationParameters(ref hairIndexCounter);
}
}
this._hairSimulationData = null;
}
/// <summary>
/// Creates a new HairSimulationData object and fills it with data from this hair's hair meshes.
/// It can get used to "easy-export" tressfx-ready data-arrays from hair objects.
/// </summary>
/// <returns></returns>
private HairSimulationData CreateHairSimulationData()
{
// Create new hair simulation data object
HairSimulationData data = new HairSimulationData();
// Counter variables
int strandTypeCounter = 0; // Maps to data.strandType. Will get incremented after every mesh iteration.
int guideHairStrandCount = 0;
int guideHairVertexCount = 0;
int maxNumVerticesPerStrand = 0;
// Start iterating through all meshes.
foreach (HairMesh mesh in this.meshes)
{
if (mesh == null)
continue;
// Move through every strand
foreach (HairStrand strand in mesh.strands)
{
// Set strand-level information
data.strandTypes.Add(strandTypeCounter);
data.followRootOffsets.Add(strand.followRootOffset);
// Get guidance hair flag
bool isGuide = strand.isGuidanceStrand;
if (isGuide)
guideHairStrandCount++;
// Vertex counter
int vertexCount = 0;
// Iterate through every vertex
foreach (HairStrandVertex vertex in strand.vertices)
{
// Set vertex-level information
data.vertices.Add(vertex.GetTressFXPosition());
data.tangents.Add(new Vector4(vertex.tangent, 0));
data.referenceVectors.Add(vertex.referenceVector);
data.globalRotations.Add(vertex.globalRotation);
data.localRotations.Add(vertex.localRotation);
data.thicknessCoefficients.Add(vertex.thicknessCoefficient);
data.restLength.Add(vertex.restLength);
if (isGuide)
guideHairVertexCount++;
vertexCount++;
}
// Check if we got a new highscore!
if (maxNumVerticesPerStrand < vertexCount)
maxNumVerticesPerStrand = vertexCount;
}
// Counter handling
strandTypeCounter++;
}
// Set the counter variables
data.guideHairStrandCount = guideHairStrandCount;
data.guideHairVertexCount = guideHairVertexCount;
data.maxNumVerticesPerStrand = maxNumVerticesPerStrand;
return data;
}
/// <summary>
/// This function will get used by importers for example if there were only strand vertex positions available.
/// It will calculate everything inside of the HairStrand and HairStrandVertex based off the vertex positions.
/// It also calculates the bounding sphere parameters.
/// </summary>
public void PrepareSimulationParameters()
{
this.BranchingAvoidance();
int hairIndexCounter = 0;
// Forward this call to all meshes
foreach (HairMesh m in this.meshes)
{
if (m != null)
m.PrepareSimulationParameters(ref hairIndexCounter);
}
this._hairSimulationData = null;
}
/// <summary>
/// Explicitly initializes the simulation data.
/// This is used in for example the tressfx binary importer.
/// </summary>
/// <param name="simulationData"></param>
public void InitializeSimulationData(HairSimulationData hairSimulationData)
{
this._hairSimulationData = hairSimulationData;
}
/// <summary>
/// Creates a new HairSimulationData object and fills it with data from this hair's hair meshes.
/// It can get used to "easy-export" tressfx-ready data-arrays from hair objects.
/// </summary>
/// <returns></returns>
private HairSimulationData CreateHairSimulationData()
{
// Create new hair simulation data object
HairSimulationData data = new HairSimulationData();
// Counter variables
int strandTypeCounter = 0; // Maps to data.strandType. Will get incremented after every mesh iteration.
int guideHairStrandCount = 0;
int guideHairVertexCount = 0;
int maxNumVerticesPerStrand = 0;
// Start iterating through all meshes.
foreach (HairMesh mesh in this.meshes)
{
if (mesh == null)
{
continue;
}
// Move through every strand
foreach (HairStrand strand in mesh.strands)
{
// Set strand-level information
data.strandTypes.Add(strandTypeCounter);
data.followRootOffsets.Add(strand.followRootOffset);
// Get guidance hair flag
bool isGuide = strand.isGuidanceStrand;
if (isGuide)
{
guideHairStrandCount++;
}
// Vertex counter
int vertexCount = 0;
// Iterate through every vertex
foreach (HairStrandVertex vertex in strand.vertices)
{
// Set vertex-level information
data.vertices.Add(vertex.GetTressFXPosition());
data.tangents.Add(new Vector4(vertex.tangent, 0));
data.referenceVectors.Add(vertex.referenceVector);
data.globalRotations.Add(vertex.globalRotation);
data.localRotations.Add(vertex.localRotation);
data.thicknessCoefficients.Add(vertex.thicknessCoefficient);
data.restLength.Add(vertex.restLength);
if (isGuide)
{
guideHairVertexCount++;
}
vertexCount++;
}
// Check if we got a new highscore!
if (maxNumVerticesPerStrand < vertexCount)
{
maxNumVerticesPerStrand = vertexCount;
}
}
// Counter handling
strandTypeCounter++;
}
// Set the counter variables
data.guideHairStrandCount = guideHairStrandCount;
data.guideHairVertexCount = guideHairVertexCount;
data.maxNumVerticesPerStrand = maxNumVerticesPerStrand;
return(data);
}
/// <summary>
/// Explicitly initializes the simulation data.
/// This is used in for example the tressfx binary importer.
/// </summary>
/// <param name="simulationData"></param>
public void InitializeSimulationData(HairSimulationData hairSimulationData)
{
this._hairSimulationData = hairSimulationData;
}
