public void Start()
{
// Grab the HEU_HoduiniAsset
_evergreenAsset = _evergreenGameObject.GetComponent <HEU_HoudiniAssetRoot>() != null?_evergreenGameObject.GetComponent <HEU_HoudiniAssetRoot>().HoudiniAsset : null;
// Always get the latest parms after each cook
List <HEU_ParameterData> parms = _evergreenAsset.Parameters.GetParameters();
foreach (HEU_ParameterData parmData in parms)
{
HEU_Logger.Log(parmData._labelName);
if (parmData._parmInfo.type == HAPI_ParmType.HAPI_PARMTYPE_BUTTON)
{
// Display a button: parmData._intValues[0];
}
else if (parmData._parmInfo.type == HAPI_ParmType.HAPI_PARMTYPE_FLOAT)
{
// Display a float: parmData._floatValues[0];
// You can set a float this way
HEU_ParameterUtility.SetFloat(_evergreenAsset, parmData._name, 1f);
// Or this way (the index is 0, unless its for array of floats)
parmData._floatValues[0] = 1;
}
}
// Make sure to cook after changing
_evergreenAsset.RequestCook(true, false, true, true);
// Start a repeating updater
InvokeRepeating("UpdateGravity", _updateRate, _updateRate);
}
/// <summary>
/// Query each geometry container's parts to get the actual geometry data.
/// A HAPI_GeoInfo represents a SOP geometry container that might have one or more
/// HAPI_PartInfos.A geometry containing more than one part could mean different
/// geometry types merged together, or different layers in a heightfield volume.
/// </summary>
/// <param name="session">Houdini Engine session</param>
/// <param name="geoInfo">The HEU_GeoInfo pertaining to the geometry to query</param>
public static void QueryGeoParts(HEU_SessionBase session, ref HAPI_GeoInfo geoInfo)
{
int numParts = geoInfo.partCount;
for (int i = 0; i < numParts; ++i)
{
HAPI_PartInfo partInfo = new HAPI_PartInfo();
if (!session.GetPartInfo(geoInfo.nodeId, 0, ref partInfo))
{
continue;
}
StringBuilder sb = new StringBuilder();
// Process each geometry by its type
if (partInfo.type == HAPI_PartType.HAPI_PARTTYPE_MESH)
{
// Meshes
sb.AppendLine(string.Format("Mesh part at {0} with vertex count {1}, point count {2}, and primitive count {3}",
i, partInfo.vertexCount, partInfo.pointCount, partInfo.faceCount));
}
else if (partInfo.type == HAPI_PartType.HAPI_PARTTYPE_VOLUME)
{
// Heightfield / terrain
sb.AppendLine(string.Format("Volume part at {0}", i));
}
else if (partInfo.type == HAPI_PartType.HAPI_PARTTYPE_CURVE)
{
// Curves
sb.AppendLine(string.Format("Curve part at {0}", i));
}
else if (partInfo.type == HAPI_PartType.HAPI_PARTTYPE_INSTANCER)
{
// Instancer
sb.AppendLine(string.Format("Instancer part at {0}", i));
}
else if (partInfo.type == HAPI_PartType.HAPI_PARTTYPE_INVALID)
{
// Not valid Houdini Engine type - ignore
sb.AppendLine(string.Format("Invalid part at {0}", i));
}
// Query attributes for each part
QueryPartAttributeByOwner(session, geoInfo.nodeId, i, HAPI_AttributeOwner.HAPI_ATTROWNER_DETAIL, partInfo.detailAttributeCount, sb);
QueryPartAttributeByOwner(session, geoInfo.nodeId, i, HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM, partInfo.primitiveAttributeCount, sb);
QueryPartAttributeByOwner(session, geoInfo.nodeId, i, HAPI_AttributeOwner.HAPI_ATTROWNER_POINT, partInfo.pointAttributeCount, sb);
QueryPartAttributeByOwner(session, geoInfo.nodeId, i, HAPI_AttributeOwner.HAPI_ATTROWNER_VERTEX, partInfo.vertexAttributeCount, sb);
HEU_Logger.Log("Part: \n" + sb.ToString());
}
}
/// <summary>
/// Query the parameters in the HDA, and change some values.
/// </summary>
/// <param name="houdiniAsset">The HEU_HoudiniAsset of the loaded asset</param>
public static void ChangeParmsAndCook(HEU_HoudiniAsset houdiniAsset)
{
// Always get the latest parms after each cook
List <HEU_ParameterData> parms = houdiniAsset.Parameters.GetParameters();
if (parms == null || parms.Count == 0)
{
HEU_Logger.LogFormat("No parms found");
return;
}
// --------------------------------------------------------------------
// Example to loop over each parm, checking its type and name. Then setting value.
StringBuilder sb = new StringBuilder();
foreach (HEU_ParameterData parmData in parms)
{
sb.AppendLine(string.Format("Parm: name={0}, type={1}", parmData._labelName, parmData._parmInfo.type));
if (parmData._parmInfo.type == HAPI_ParmType.HAPI_PARMTYPE_BUTTON)
{
// Display a button: parmData._intValues[0];
}
else if (parmData._parmInfo.type == HAPI_ParmType.HAPI_PARMTYPE_FLOAT)
{
// Display a float: parmData._floatValues[0];
// You can set a float this way
HEU_ParameterUtility.SetFloat(houdiniAsset, parmData._name, 1f);
// Or this way (the index is 0, unless its for array of floats)
parmData._floatValues[0] = 1;
}
}
HEU_Logger.Log("Parameters: \n" + sb.ToString());
// --------------------------------------------------------------------
// Examples to look up a parm via name, and set it.
// Use helper to set float parameter with name
HEU_ParameterUtility.SetFloat(houdiniAsset, "gravity", 5f);
// Use helper to set random color
HEU_ParameterUtility.SetColor(houdiniAsset, "branch_vtx_color_color", Random.ColorHSV());
// Make sure to cook after changing parms
CookAsset(houdiniAsset);
}
static void LogArray <T>(string name, T[] arr, int tupleSize)
{
int index = 0;
int count = arr.Length / tupleSize;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < count; ++i)
{
sb.AppendFormat("{0}[{1}] = ", name, i);
if (tupleSize > 1)
{
sb.Append("[");
for (int j = 0; j < tupleSize; ++j)
{
index = i * tupleSize + j;
if (j != 0)
{
sb.Append(",");
}
sb.AppendFormat("{0}", arr[index]);
}
sb.AppendLine("]");
}
else
{
sb.AppendFormat("{0}\n", arr[i]);
}
}
HEU_Logger.Log(sb.ToString());
}