+typedef struct
+{
+ double r, g, b;
+ int delta;
+} surfaceColorStruct;
+
+typedef struct
+{
+ double r, g, b;
+ int delta;
+} volumeColorStruct;
+
+typedef struct
+{
+ double r, g, b;
+} edgeColorStruct;
+
+typedef struct
+{
+ double r, g, b;
+} nodeColorStruct;
+
+struct actorAspect
+{
+ surfaceColorStruct surfaceColor;
+ volumeColorStruct volumeColor;
+ edgeColorStruct edgeColor;
+ nodeColorStruct nodeColor;
+ double opacity;
+};
+