private static extern void Internal_create(ParticleEmitterRectShape managedInstance, ref ParticleRectShapeOptions desc);
 private static extern void Internal_setOptions(IntPtr thisPtr, ref ParticleRectShapeOptions options);
 private static extern void Internal_getOptions(IntPtr thisPtr, out ParticleRectShapeOptions __output);
 /// <summary>Creates a new particle emitter rectangle shape.</summary>
 public ParticleEmitterRectShape(ParticleRectShapeOptions desc)
 {
     Internal_create(this, ref desc);
 }