public FieldInfo( ParticleFieldType type, int numElements, int offset, object defaultValue )
{
m_Type = type;
m_NumElements = numElements;
m_Size = ParticleFieldTypeSize( type ) * numElements;
m_Offset = offset;
m_DefaultValues = new object[ numElements ];
if ( defaultValue is Array )
{
object[] src = ( object[] )defaultValue;
for ( int i = 0; i < numElements; ++i )
{
m_DefaultValues[ i ] = src[ i ];
}
}
else
{
m_DefaultValues = new object[ numElements ];
for ( int i = 0; i < numElements; ++i )
{
m_DefaultValues[ i ] = defaultValue;
}
}
}
/// <summary>
/// Adds a field to the particle definition
/// </summary>
public void AddField( string name, ParticleFieldType type, int numElements, object defaultValue )
{
FieldInfo field;
if ( m_Fields.TryGetValue( name, out field ) )
{
if ( type != field.Type )
{
throw new ArgumentException( string.Format( "Field \"{0}\" was already defined using type {1}, not type {2}", name, field.Type, type ), "type" );
}
if ( field.NumElements != numElements )
{
throw new ArgumentException( string.Format( "Field \"{0}\" was already defined with {1} elements of type {2}, not {3}", name, field.NumElements, type, numElements ), "numElements" );
}
return;
}
m_BuildBuffer = true;
field = new FieldInfo( type, numElements, m_Stride, defaultValue );
m_Fields.Add( name, field );
m_Stride += field.Size;
}
private static int ParticleFieldTypeSize( ParticleFieldType type )
{
switch ( type )
{
case ParticleFieldType.Int32 : return sizeof( int );
case ParticleFieldType.Float32 : return sizeof( float );
}
throw new NotSupportedException( "Unsupported field type " + type );
}
