-enum TraceID {
- TRACE_INVALID=-1,
- TRACE_NONE=0, /* No tracing */
- TRACE_TEXT, /* Minimal status */
- TRACE_PHM, /* Show phantom */
- TRACE_RAYS, /* Show all rays */
- TRACE_PLOT, /* Plot raysums */
- TRACE_CLIPPING /* Plot clipping */
-};
+static const int TRACE_INVALID = 0xFFFF;
+static const int TRACE_NONE = 0x0000;
+static const int TRACE_TEXT = 0x0001;
+static const int TRACE_PHM = 0x0002;
+static const int TRACE_RAYS = 0x0004;
+static const int TRACE_PLOT = 0x0008;
+static const int TRACE_CLIPPING = 0x0010;