void Start()
{
//Parse the VTK object
m_parser = new VTKParser($"{Application.streamingAssetsPath}/{FilePath}");
if (!m_parser.Parse())
{
Debug.Log("Error at parsing the ocean dataset");
return;
}
//Check if the type is structured points
//If so, create the structured points !
if (m_parser.GetDatasetType() == VTKDatasetType.VTK_STRUCTURED_POINTS)
{
m_oceanGrid = GameObject.Instantiate(StructuredGrid);
unsafe
{
//Check if the first attribute is a char. If so, used these as a mask
byte *mask = null;
List <VTKFieldValue> fieldDesc = m_parser.GetPointFieldValueDescriptors();
foreach (var f in fieldDesc)
{
//TODO use Unity to give that value name (this is the mask value name)
if (f.Name == "vtkValidPointMask" && f.Format == VTKValueFormat.VTK_CHAR)
{
VTKValue val = m_parser.ParseAllFieldValues(f);
m_maskValue = val;
mask = (byte *)(val.Value);
}
}
if (!m_oceanGrid.Init(m_parser, mask))
{
return;
}
}
Vector3 size = m_oceanGrid.MaxMeshPos - m_oceanGrid.MinMeshPos;
//Generate the small multiples
m_smallMultiples = new List <VTKUnitySmallMultiple>();
m_textSMMeshes = new List <TextMesh>();
m_smallMultiples.Add(m_oceanGrid.CreatePointFieldSmallMultiple(2));
m_smallMultiples.Add(m_oceanGrid.CreatePointFieldSmallMultiple(3));
m_smallMultiples.Add(m_oceanGrid.CreatePointFieldSmallMultiple(4));
//Place them correctly and associate the text
for (int i = 0; i < m_smallMultiples.Count; i++)
{
//Small multiple
var c = m_smallMultiples[i];
c.transform.parent = this.transform;
c.transform.localPosition = new Vector3(2.5f * i, 0, 0);
c.transform.localScale = new Vector3(1.0f, 1.0f, 1.0f);
//c.SphereEnabled = true;
//c.PlaneEnabled = true;
c.transform.localRotation = Quaternion.Euler(0.0f, 180.0f, 0.0f);
//Text
TextMesh smText = Instantiate(SmallMultipleTextProperty);
m_textSMMeshes.Add(smText);
smText.text = m_oceanGrid.GetPointFieldName((UInt32)i + 2);
smText.transform.parent = c.transform;
smText.transform.localPosition = new Vector3(0.0f, size.y + 0.1f, 0.0f);
smText.transform.localScale = new Vector3(0.1f, 0.1f, 0.1f);
smText.transform.localRotation = new Quaternion(0.0f, 0.0f, 0.0f, 1.0f);
}
}
}
/// <summary>
/// Initialize the small multiple from point field data
/// </summary>
/// <param name="parser">The VTK Parser</param>
/// <param name="mesh">The mesh to display</param>
/// <param name="uvID">The ID where to put the color data</param>
/// <param name="valueID">The ID of the VTKFieldPointValue</param>
/// <param name="offset">The offset along each axis to apply : pos = x*offset.x + y*offset.y + z*offset.z</param>
/// <param name="density">The density in use</param>
/// <param name="mask">The mask to apply along each point</param>
/// <returns></returns>
public unsafe bool InitFromPointField(VTKParser parser, Mesh mesh, Int32 uvID, Int32 valueID, Vector3Int offset, Vector3Int density, byte *mask)
{
m_material = new Material(ColorMaterial);
m_values = new float[density.x * density.y * density.z];
//Check the ID
if (uvID > 7)
{
Debug.Log("The uvID must be between 0 to 7. This is a limitation of Unity for working within a common mesh...");
return(false);
}
m_mesh = mesh;
VTKStructuredPoints descPts = parser.GetStructuredPointsDescriptor();
//Determine the maximum and minimum positions
Vector3 minModelPos = new Vector3((float)(-descPts.Size[0] / 2.0 * descPts.Spacing[0]),
(float)(-descPts.Size[1] / 2.0 * descPts.Spacing[1]),
(float)(-descPts.Size[2] / 2.0 * descPts.Spacing[2]));
Vector3 maxModelPos = -minModelPos;
//The value buffer
List <VTKFieldValue> fieldDesc = parser.GetPointFieldValueDescriptors();
if (fieldDesc.Count < valueID)
{
Debug.Log("No value to display");
return(false);
}
VTKValue val = parser.ParseAllFieldValues(fieldDesc[valueID]);
List <Vector4> colors = new List <Vector4>((int)(density.x * density.y * density.z));
//Determine the minimum and maximum value and their position
m_maxVal = float.MinValue;
m_minVal = float.MaxValue;
Vector3 minLoc = new Vector3();
Vector3 maxLoc = new Vector3();
for (UInt32 i = 0; i < val.NbValues; i++)
{
if (mask != null && mask[i] == 0)
{
continue;
}
float v = (float)val.ReadAsDouble(i * fieldDesc[valueID].NbValuesPerTuple);
if (m_maxVal < v)
{
m_maxVal = v;
maxLoc = new Vector3(i % descPts.Size[0], (i / descPts.Size[0]) % descPts.Size[1], i / (descPts.Size[0] * descPts.Size[1]));
}
if (m_minVal > v)
{
m_minVal = v;
minLoc = new Vector3(i % descPts.Size[0], (i / descPts.Size[0]) % descPts.Size[1], i / (descPts.Size[0] * descPts.Size[1]));
}
}
//Normalize the location (between 0.0 and 1.0 for the most "long" axis)
Vector3[] vec = new Vector3[2] {
maxLoc, minLoc
};
Vector3 modelDist = maxModelPos - minModelPos;
float maxModelDist = Math.Max(modelDist.x, Math.Max(modelDist.y, modelDist.z));
for (int i = 0; i < vec.Length; i++)
{
Vector3 l = vec[i];
l = (new Vector3((float)(l.x * descPts.Spacing[0]),
(float)(l.y * descPts.Spacing[1]),
(float)(l.z * descPts.Spacing[2])) + minModelPos) / maxModelDist;
vec[i] = l;
}
Debug.Log($"Min : {m_minVal} Max : {m_maxVal}");
//Fill the color array
maxLoc = vec[0];
minLoc = vec[1];
UInt64 colorValueOff = 0;
for (UInt32 k = 0; k < density.z; k++)
{
for (UInt32 j = 0; j < density.y; j++)
{
for (UInt32 i = 0; i < density.x; i++, colorValueOff++)
{
UInt64 fieldOff = (UInt64)(i * offset.x + j * offset.y + k * offset.z);
//Check the mask
if (mask != null && *(mask + fieldOff) == 0)
{
colors.Add(new Vector4(0.0f, 0.0f, 0.0f, 0.0f));
m_values[colorValueOff] = m_minVal;
continue;
}
float c = val.ReadAsFloat(fieldOff * fieldDesc[valueID].NbValuesPerTuple);
m_values[colorValueOff] = c;
c = (float)((c - m_minVal) / (m_maxVal - m_minVal));
//LAB color space (warm - cold)
Color?col = null;
if (c < 0.5)
{
col = LABColor.Lerp(coldColor, whiteColor, 2.0f * c).ToXYZ().ToRGB();
}
else
{
col = LABColor.Lerp(whiteColor, warmColor, 2.0f * (c - 0.5f)).ToXYZ().ToRGB();
}
colors.Add(new Vector4(col.Value.r, col.Value.g, col.Value.b, 1.0f));
}
}
}
//Update the mesh / material
m_mesh.SetUVs(uvID, colors);
m_mesh.UploadMeshData(false);
m_colorID = uvID;
for (int i = 0; i < 8; i++)
{
if (i != m_colorID)
{
m_material.DisableKeyword($"TEXCOORD{i}_ON");
}
}
m_material.EnableKeyword($"TEXCOORD{m_colorID}_ON");
PlaneEnabled = false;
SphereEnabled = false;
CreateGameObjects(vec);
return(true);
}