private static void GetValues(this HoudiniGeoAttribute attr, out string[] values)
{
if (!attr.ValidateForGetValues <string>(HoudiniGeoAttributeType.String, 1))
{
values = new string[0];
return;
}
values = attr.stringValues;
}
private static void GetValues(this HoudiniGeoAttribute attr, out float[] values)
{
if (!attr.ValidateForGetValues <float>(HoudiniGeoAttributeType.Float, 1))
{
values = new float[0];
return;
}
values = attr.floatValues;
}
private static void GetValues(this HoudiniGeoAttribute attr, out int[] values)
{
if (!attr.ValidateForGetValues <int>(HoudiniGeoAttributeType.Integer, 1))
{
values = new int[0];
return;
}
values = attr.intValues;
}
public static bool TryGetAttribute(this HoudiniGeo geo, string attrName, HoudiniGeoAttributeType type,
HoudiniGeoAttributeOwner owner, out HoudiniGeoAttribute attr)
{
if (owner == HoudiniGeoAttributeOwner.Any)
{
attr = geo.attributes.FirstOrDefault(a => a.type == type && a.name == attrName);
}
else
{
attr = geo.attributes.FirstOrDefault(a => a.owner == owner && a.type == type && a.name == attrName);
}
return(attr != null);
}
private static void AddSingleAttributeToDictionary(List <object> attributes, HoudiniGeoAttribute attribute)
{
string typeString = HoudiniGeoFileParser.AttributeTypeEnumValueToCategoryString(attribute.type);
// Each attribute has a list with two dictionaries: a header and a body.
List <object> attributeDictionaries = new List <object>();
attributes.Add(attributeDictionaries);
// Header dictionary.
Dictionary <string, object> header = new Dictionary <string, object>()
{
{ "scope", "public" }, // TODO: Does this ever vary?
private static void GetValues(this HoudiniGeoAttribute attr, out Vector2[] values)
{
if (!attr.ValidateForGetValues <Vector2>(HoudiniGeoAttributeType.Float, 2))
{
values = new Vector2[0];
return;
}
// Convert to Vector2
float[] rawValues = attr.floatValues;
values = new Vector2[rawValues.Length / attr.tupleSize];
for (int i = 0; i < values.Length; i++)
{
values[i].x = rawValues[i * attr.tupleSize];
values[i].y = rawValues[i * attr.tupleSize + 1];
}
}
private static bool ValidateForGetValues <T>(this HoudiniGeoAttribute attr, HoudiniGeoAttributeType expectedType,
int expectedMinTupleSize)
{
if (attr.type != expectedType)
{
Debug.LogError(string.Format("Cannot convert raw values of {0} attribute '{1}' to {2} (type: {3})",
attr.owner, attr.name, typeof(T).Name, attr.type));
return(false);
}
if (attr.tupleSize < expectedMinTupleSize)
{
Debug.LogError(string.Format("The tuple size of {0} attribute '{1}' too small for conversion to {2}",
attr.owner, attr.name, typeof(T).Name));
return(false);
}
return(true);
}
private static object GetAttributeValue(Type type, HoudiniGeoAttribute attribute, int index)
{
if (type == typeof(float))
{
return(attribute.floatValues[index]);
}
if (type == typeof(int))
{
return(attribute.intValues[index]);
}
if (type == typeof(string))
{
return(attribute.stringValues[index]);
}
if (type == typeof(Vector2))
{
return(new Vector2(attribute.floatValues[index * 2], attribute.floatValues[index * 2 + 1]));
}
if (type == typeof(Vector3))
{
return(new Vector3(attribute.floatValues[index * 3], attribute.floatValues[index * 3 + 1], attribute.floatValues[index * 3 + 2]));
}
if (type == typeof(Vector4))
{
return(new Vector4(attribute.floatValues[index * 4], attribute.floatValues[index * 4 + 1], attribute.floatValues[index * 4 + 2], attribute.floatValues[index * 4 + 3]));
}
if (type == typeof(Vector2Int))
{
return(new Vector2Int(attribute.intValues[index * 2], attribute.intValues[index * 2 + 1]));
}
if (type == typeof(Vector3Int))
{
return(new Vector3Int(attribute.intValues[index * 3], attribute.intValues[index * 3 + 1], attribute.intValues[index * 3 + 2]));
}
if (type == typeof(Color))
{
return(new Color(attribute.floatValues[index * 3], attribute.floatValues[index * 3 + 1], attribute.floatValues[index * 3 + 2]));
}
Debug.LogWarning($"Tried to get value of unrecognized type '{type.Name}'");
return(null);
}
private static void GetValues(this HoudiniGeoAttribute attr, out Color[] values)
{
if (!attr.ValidateForGetValues <Color>(HoudiniGeoAttributeType.Float, 3))
{
values = new Color[0];
return;
}
// Convert to Color
float[] rawValues = attr.floatValues;
values = new Color[rawValues.Length / attr.tupleSize];
for (int i = 0; i < values.Length; i++)
{
values[i].r = rawValues[i * attr.tupleSize];
values[i].g = rawValues[i * attr.tupleSize + 1];
values[i].b = rawValues[i * attr.tupleSize + 2];
values[i].a = 1;
if (attr.tupleSize == 4)
{
values[i].a = rawValues[i * attr.tupleSize + 3];
}
}
}
private static bool TryCreateAttribute(FieldInfo fieldInfo, out HoudiniGeoAttribute attribute)
{
attribute = null;
Type type = fieldInfo.FieldType;
if (type == typeof(float))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Float, tupleSize = 1
}
}
;
else if (type == typeof(int))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Integer, tupleSize = 1
}
}
;
else if (type == typeof(string))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.String, tupleSize = 1
}
}
;
if (type == typeof(Vector2))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Float, tupleSize = 2
}
}
;
else if (type == typeof(Vector3))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Float, tupleSize = 3
}
}
;
else if (type == typeof(Vector4))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Float, tupleSize = 4
}
}
;
else if (type == typeof(Vector2Int))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Integer, tupleSize = 2
}
}
;
else if (type == typeof(Vector3Int))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Integer, tupleSize = 3
}
}
;
else if (type == typeof(Color))
{
attribute = new HoudiniGeoAttribute {
type = HoudiniGeoAttributeType.Float, tupleSize = 3
}
}
;
if (attribute == null)
{
return(false);
}
attribute.name = fieldInfo.Name;
return(true);
}
public static void ToUnityMesh(this HoudiniGeo geo, Mesh mesh)
{
if (geo.polyPrimitives.Length == 0)
{
Debug.LogError("Cannot convert HoudiniGeo to Mesh because geo has no PolyPrimitives");
return;
}
mesh.name = geo.name;
int[] indices = geo.polyPrimitives.SelectMany(p => p.indices).ToArray();
int vertexCount = indices.Length;
if (vertexCount > 65000)
{
throw new Exception(string.Format("Vertex count ({0}) exceeds limit of {1}!", geo.vertexCount, 65000));
}
// Check if position attribute P exists
HoudiniGeoAttribute posAttr = null;
if (!geo.TryGetAttribute(HoudiniGeo.POS_ATTR_NAME, HoudiniGeoAttributeType.Float, out posAttr))
{
Debug.LogWarning("HoudiniGEO has no Position attribute on points or vertices");
}
// Get Vertex/Point positions
Vector3[] posAttrValues = null;
posAttr.GetValues(out posAttrValues);
// Get uv attribute values
HoudiniGeoAttribute uvAttr = null;
Vector2[] uvAttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.UV_ATTR_NAME, HoudiniGeoAttributeType.Float, out uvAttr))
{
uvAttr.GetValues(out uvAttrValues);
}
// Get uv2 attribute values
HoudiniGeoAttribute uv2Attr = null;
Vector2[] uv2AttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.UV2_ATTR_NAME, HoudiniGeoAttributeType.Float, out uv2Attr))
{
uv2Attr.GetValues(out uv2AttrValues);
}
// Get normal attribute values
HoudiniGeoAttribute normalAttr = null;
Vector3[] normalAttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.NORMAL_ATTR_NAME, HoudiniGeoAttributeType.Float, out normalAttr))
{
normalAttr.GetValues(out normalAttrValues);
}
// Get color attribute values
HoudiniGeoAttribute colorAttr = null;
Color[] colorAttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.COLOR_ATTR_NAME, HoudiniGeoAttributeType.Float, out colorAttr))
{
colorAttr.GetValues(out colorAttrValues);
// Get alpha color values
HoudiniGeoAttribute alphaAttr = null;
float[] alphaAttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.ALPHA_ATTR_NAME, HoudiniGeoAttributeType.Float, colorAttr.owner, out alphaAttr))
{
alphaAttr.GetValues(out alphaAttrValues);
if (colorAttrValues.Length == alphaAttrValues.Length)
{
for (int i = 0; i < colorAttrValues.Length; i++)
{
colorAttrValues[i].a = alphaAttrValues[i];
}
}
}
}
// Get tangent attribute values
HoudiniGeoAttribute tangentAttr = null;
Vector3[] tangentAttrValues = null;
if (geo.TryGetAttribute(HoudiniGeo.TANGENT_ATTR_NAME, HoudiniGeoAttributeType.Float, out tangentAttr))
{
tangentAttr.GetValues(out tangentAttrValues);
}
// Get material primitive attribute (Multiple materials result in multiple submeshes)
HoudiniGeoAttribute materialAttr = null;
string[] materialAttributeValues = null;
if (geo.TryGetAttribute(HoudiniGeo.MATERIAL_ATTR_NAME, HoudiniGeoAttributeType.String, HoudiniGeoAttributeOwner.Primitive, out materialAttr))
{
materialAttr.GetValues(out materialAttributeValues);
}
// Create our mesh attribute buffers
var submeshInfo = new Dictionary <string, List <int> >();
var positions = new Vector3[vertexCount];
var uvs = new Vector2[vertexCount]; // unity doesn't like it when meshes have no uvs
var uvs2 = (uv2Attr != null) ? new Vector2[vertexCount] : null;
var normals = (normalAttr != null) ? new Vector3[vertexCount] : null;
var colors = (colorAttr != null) ? new Color[vertexCount] : null;
var tangents = (tangentAttr != null) ? new Vector4[vertexCount] : null;
// Fill the mesh buffers
int[] vertToPoint = geo.pointRefs;
Dictionary <int, int> vertIndexGlobalToLocal = new Dictionary <int, int>();
for (int i = 0; i < vertexCount; ++i)
{
int vertIndex = indices[i];
int pointIndex = vertToPoint[vertIndex];
vertIndexGlobalToLocal.Add(vertIndex, i);
// Position
switch (posAttr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
positions[i] = posAttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
positions[i] = posAttrValues[pointIndex];
break;
}
// UV1
if (uvAttr != null)
{
switch (uvAttr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
uvs[i] = uvAttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
uvs[i] = uvAttrValues[pointIndex];
break;
}
}
else
{
// Unity likes to complain when a mesh doesn't have any UVs so we'll just add a default
uvs[i] = Vector2.zero;
}
// UV2
if (uv2Attr != null)
{
switch (uv2Attr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
uvs2[i] = uv2AttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
uvs2[i] = uv2AttrValues[pointIndex];
break;
}
}
// Normals
if (normalAttr != null)
{
switch (normalAttr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
normals[i] = normalAttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
normals[i] = normalAttrValues[pointIndex];
break;
}
}
// Colors
if (colorAttr != null)
{
switch (colorAttr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
colors[i] = colorAttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
colors[i] = colorAttrValues[pointIndex];
break;
}
}
// Fill tangents info
if (tangentAttr != null)
{
switch (tangentAttr.owner)
{
case HoudiniGeoAttributeOwner.Vertex:
tangents[i] = tangentAttrValues[vertIndex];
break;
case HoudiniGeoAttributeOwner.Point:
tangents[i] = tangentAttrValues[pointIndex];
break;
}
}
}
// Get primitive attribute values and created submeshes
foreach (var polyPrim in geo.polyPrimitives)
{
// Normals
if (normalAttr != null && normalAttr.owner == HoudiniGeoAttributeOwner.Primitive)
{
foreach (var vertIndex in polyPrim.indices)
{
int localVertIndex = vertIndexGlobalToLocal[vertIndex];
normals[localVertIndex] = normalAttrValues[polyPrim.id];
}
}
// Colors
if (colorAttr != null && colorAttr.owner == HoudiniGeoAttributeOwner.Primitive)
{
foreach (var vertIndex in polyPrim.indices)
{
int localVertIndex = vertIndexGlobalToLocal[vertIndex];
colors[localVertIndex] = colorAttrValues[polyPrim.id];
}
}
// Add face to submesh based on material attribute
var materialName = (materialAttr == null) ? HoudiniGeo.DEFAULT_MATERIAL_NAME : materialAttributeValues[polyPrim.id];
if (!submeshInfo.ContainsKey(materialName))
{
submeshInfo.Add(materialName, new List <int>());
}
submeshInfo[materialName].AddRange(polyPrim.triangles);
}
// Assign buffers to mesh
mesh.vertices = positions;
mesh.subMeshCount = submeshInfo.Count;
mesh.uv = uvs;
mesh.uv2 = uvs2;
mesh.normals = normals;
mesh.colors = colors;
mesh.tangents = tangents;
// Set submesh indexbuffers
int submeshIndex = 0;
foreach (var item in submeshInfo)
{
// Skip empty submeshes
if (item.Value.Count == 0)
{
continue;
}
// Set the indices for the submesh (Reversed by default because axis coordinates Z flipped)
IEnumerable <int> submeshIndices = item.Value;
if (!geo.importSettings.reverseWinding)
{
submeshIndices = submeshIndices.Reverse();
}
mesh.SetIndices(submeshIndices.ToArray(), MeshTopology.Triangles, submeshIndex);
submeshIndex++;
}
// Calculate any missing buffers
mesh.ConvertToUnityCoordinates();
mesh.RecalculateBounds();
if (normalAttr == null)
{
mesh.RecalculateNormals();
}
}
public static bool TryGetAttribute(this HoudiniGeo geo, string attrName, HoudiniGeoAttributeType type, out HoudiniGeoAttribute attr)
{
attr = geo.attributes.FirstOrDefault(a => a.type == type && a.name == attrName);
return(attr != null);
}
private static HoudiniGeoAttribute ParseSingleAttribute(JToken attrToken, HoudiniGeoAttributeOwner owner)
{
// NUMERIC
// [
// [
// "scope","public",
// "type","numeric",
// "name","P", <- Extract This
// "options",{
// "type":{
// "type":"string",
// "value":"hpoint"
// }
// }
// ],
// [
// "size",4, <- Extract This
// "storage","fpreal32", <- Extract This
// "defaults",[
// "size",4,
// "storage","fpreal64",
// "values",[0,0,0,1]
// ],
// "values",[
// "size",4,
// "storage","fpreal32",
// "tuples",[[-0.5,-0.5,-0.5,1],[0.5,-0.5,-0.5,1],...] <- Extract This
// ]
// ]
// ]
// STRING
// [
// [
// "scope","public",
// "type","string",
// "name","varmap",
// "options",{
// }
// ],
// [
// "size",1,
// "storage","int32",
// "strings",["SHIT_INT -> SHIT_INT"],
// "indices",[
// "size",1,
// "storage","int32",
// "arrays",[[0]]
// ]
// ]
// ]
JToken[] childBlockTokens = attrToken.Children().ToArray();
JToken headerToken = childBlockTokens[0];
JToken bodyToken = childBlockTokens[1];
var geoAttribute = new HoudiniGeoAttribute();
geoAttribute.owner = owner;
// Parse header block
Dictionary <string, JToken> headerBlockDict = ArrayKeyValueToDictionary(headerToken.Children().ToArray());
geoAttribute.name = headerBlockDict["name"].Value <string>();
string valueType = headerBlockDict["type"].Value <string>();
// Parse body block
Dictionary <string, JToken> valuesBlockDict = ArrayKeyValueToDictionary(bodyToken.Children().ToArray());
geoAttribute.tupleSize = valuesBlockDict["size"].Value <int>();
// Parse Numeric types
if (valueType == "numeric")
{
// Get storage type (float, int)
string storageType = valuesBlockDict["storage"].Value <string>();
geoAttribute.type = AttributeTypeStrToEnumValue(storageType);
if (geoAttribute.type == HoudiniGeoAttributeType.Invalid)
{
Debug.LogWarning("HoudiniGeoFileParser: unsuppored numeric storage type " + valueType);
return(null);
}
// Get all values
Dictionary <string, JToken> valuesDict = ArrayKeyValueToDictionary(valuesBlockDict["values"].Children().ToArray());
if (geoAttribute.type == HoudiniGeoAttributeType.Float)
{
int tupleSize = valuesDict["size"].Value <int>();
string valuesKey = (tupleSize == 1) ? "arrays" : "tuples";
geoAttribute.floatValues = valuesDict[valuesKey].Children().SelectMany(t => t.Values <float>()).ToArray();
}
else if (geoAttribute.type == HoudiniGeoAttributeType.Integer)
{
geoAttribute.intValues = valuesDict["arrays"].Children().SelectMany(t => t.Values <int>()).ToArray();
}
}
// Parse String types
else if (valueType == "string")
{
geoAttribute.type = HoudiniGeoAttributeType.String;
Dictionary <string, JToken> indicesDict = ArrayKeyValueToDictionary(valuesBlockDict["indices"].Children().ToArray());
string[] stringValues = valuesBlockDict["strings"].Values <string>().ToArray();
int[] indices = indicesDict["arrays"].Children().SelectMany(t => t.Values <int>()).ToArray();
geoAttribute.stringValues = indices.Select(i => (i >= 0 && i < stringValues.Length) ? stringValues[i] : "").ToArray();
}
// Unexpected type?
else
{
Debug.LogWarning("HoudiniGeoFileParser: unsuppored attribute valueType " + valueType);
return(null);
}
return(geoAttribute);
}
