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- /****************************************************************************
- * objects.h
- *
- * This module contains all defines, typedefs, and prototypes for OBJECTS.C.
- *
- * from Persistence of Vision(tm) Ray Tracer
- * Copyright 1996,1999 Persistence of Vision Team
- *---------------------------------------------------------------------------
- * NOTICE: This source code file is provided so that users may experiment
- * with enhancements to POV-Ray and to port the software to platforms other
- * than those supported by the POV-Ray Team. There are strict rules under
- * which you are permitted to use this file. The rules are in the file
- * named POVLEGAL.DOC which should be distributed with this file.
- * If POVLEGAL.DOC is not available or for more info please contact the POV-Ray
- * Team Coordinator by email to team-coord@povray.org or visit us on the web at
- * http://www.povray.org. The latest version of POV-Ray may be found at this site.
- *
- * This program is based on the popular DKB raytracer version 2.12.
- * DKBTrace was originally written by David K. Buck.
- * DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
- *
- *****************************************************************************/
-
- /* NOTE: FRAME.H contains other object stuff. */
-
- #ifndef OBJECTS_H
- #define OBJECTS_H
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- /*
- * [DB 7/94]
- *
- * The flag field is used to store all possible flags that are
- * used for objects (up to 16).
- *
- * RLP 1999 there are really 32 flags, since it's an unsigned long.
- * This is important, because Nathan used #17 below.
- *
- * The flages are manipulated using the following macros:
- *
- * Set_Flag (Object, Flag) : set specified Flag in Object
- * Clear_Flag (Object, Flag) : clear specified Flag in Object
- * Invert_Flag (Object, Flag) : invert specified Flag in Object
- * Test_Flag (Object, Flag) : test specified Flag in Object
- *
- * Copy_Flag (Object1, Object2, Flag) : Set the Flag in Object1 to the
- * value of the Flag in Object2.
- * Bool_Flag (Object, Flag, Bool) : if(Bool) Set flag else Clear flag
- *
- * Object is a pointer to the object.
- * Flag is the number of the flag to test.
- *
- */
-
- #define NO_SHADOW_FLAG 0x00001 /* Object doesn't cast shadows */
- #define CLOSED_FLAG 0x00002 /* Object is closed */
- #define INVERTED_FLAG 0x00004 /* Object is inverted */
- #define SMOOTHED_FLAG 0x00008 /* Object is smoothed */
- #define CYLINDER_FLAG 0x00010 /* Object is a cylinder */
- #define DEGENERATE_FLAG 0x00020 /* Object is degenerate */
- #define STURM_FLAG 0x00040 /* Object should use sturmian root solver */
- #define OPAQUE_FLAG 0x00080 /* Object is opaque */
- #define MULTITEXTURE_FLAG 0x00100 /* Object is multi-textured */
- #define INFINITE_FLAG 0x00200 /* Object is infinite */
- #define HIERARCHY_FLAG 0x00400 /* Object can have a bounding hierarchy */
- #define HOLLOW_FLAG 0x00800 /* Object is hollow (atmosphere inside) */
- #define HOLLOW_SET_FLAG 0x01000 /* Hollow explicitly set in scene file */
- /* NK 1998 */
- #define UV_FLAG 0x02000 /* Object uses UV mapping */
- /* NK ---- */
- /* NK 1998 double_illuminate */
- #define DOUBLE_ILLUMINATE_FLAG 0x04000 /* Illuminate both sides of the surface */
- /* NK ---- */
- #ifdef NoImageNoReflectionPatch
- #define NO_IMAGE_FLAG 0x08000 /* Object doesn't catch camera rays [ENB 9/97] */
- #define NO_REFLECTION_FLAG 0x10000 /* Object doesn't cast reflection rays [ENB 9/97] */
- #endif
- #define INVERT_NO_SHADOW_GROUP 0x20000 /* invert Lights on NO SHadow */
- #define INVERT_LIGHT_GROUP 0x40000 /* invert lights on LightGroup */
-
-
- #define Set_Flag(Object, Flag) \
- { (Object)->Flags |= (Flag); }
-
- #define Clear_Flag(Object, Flag) \
- { (Object)->Flags &= ~(Flag); }
-
- #define Invert_Flag(Object, Flag) \
- { (Object)->Flags ^= (Flag); }
-
- #define Test_Flag(Object, Flag) \
- ((Object)->Flags & (Flag))
-
- #define Copy_Flag(Object1, Object2, Flag) \
- { (Object1)->Flags = (((Object1)->Flags) & (!Flag)) | \
- (((Object2)->Flags) & (Flag)); }
-
- #define Bool_Flag(Object, Flag, Bool) \
- { if(Bool){ (Object)->Flags |= (Flag); } else { (Object)->Flags &= ~(Flag); }}
-
-
-
- /* Object types. */
-
- #define BASIC_OBJECT 0
- #define PATCH_OBJECT 1 /* Has no inside, no inverse */
- #define TEXTURED_OBJECT 2 /* Has texture, possibly in children */
- #define COMPOUND_OBJECT 4 /* Has children field */
- #define STURM_OK_OBJECT 8 /* STRUM legal */
- #define WATER_LEVEL_OK_OBJECT 16 /* WATER_LEVEL legal */
- #define LIGHT_SOURCE_OBJECT 32 /* link me in frame.light_sources */
- #define BOUNDING_OBJECT 64 /* This is a holder for bounded object */
- #define SMOOTH_OK_OBJECT 128 /* SMOOTH legal */
- #define IS_CHILD_OBJECT 256 /* Object is inside a COMPOUND */
- #define DOUBLE_ILLUMINATE 512 /* Illuminate both sides of surface to avoid normal purturb bug */
- /* NK 1998 - DOUBLE_ILLUMINATE is not used anymore - use DOUBLE_ILLUMINATE_FLAG */
- #define HIERARCHY_OK_OBJECT 1024 /* NO_HIERARCHY legal */
- #define LT_SRC_UNION_OBJECT 2048 /* Union of light_source objects only */
- #ifdef MotionBlurPatch
- #define MOTION_BLUR_OBJECT 16384
- #define CHILDREN_FLAGS (PATCH_OBJECT+TEXTURED_OBJECT+MOTION_BLUR_OBJECT) /* Reverse inherited flags */
- #else
- #define CHILDREN_FLAGS (PATCH_OBJECT+TEXTURED_OBJECT) /* Reverse inherited flags */
- #endif
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
- extern unsigned int Number_of_istacks;
- extern unsigned int Max_Intersections;
- extern ISTACK *free_istack;
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- void Default_UVCoord (UV_VECT Result, OBJECT *Object, INTERSECTION *Inter);
-
- int Intersection (INTERSECTION *Ray_Intersection, OBJECT *Object, RAY *Ray);
- int Ray_In_Bound (RAY *Ray, OBJECT *Bounding_Object);
- int Point_In_Clip (VECTOR IPoint, OBJECT *Clip);
- OBJECT *Copy_Object (OBJECT *Old);
- void Translate_Object (OBJECT *Object, VECTOR Vector, TRANSFORM *Trans);
- void Rotate_Object (OBJECT *Object, VECTOR Vector, TRANSFORM *Trans);
- void Scale_Object (OBJECT *Object, VECTOR Vector, TRANSFORM *Trans);
- void Transform_Object (OBJECT *Object, TRANSFORM *Trans);
- int Inside_Object (VECTOR IPoint, OBJECT *Vector);
- void Invert_Object (OBJECT *Object);
- void Destroy_Object (OBJECT *Object);
- ISTACK *open_istack (void);
- void close_istack (ISTACK *istk);
- void incstack (ISTACK *istk);
- void Destroy_IStacks (void);
- void Destroy_Single_Object (OBJECT **ObjectPtr);
-
-
- #endif
-