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- /****************************************************************************
- * blob.h
- *
- * This module contains all defines, typedefs, and prototypes for BLOB.C.
- *
- * from Persistence of Vision(tm) Ray Tracer
- * Copyright 1996 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 leaving a message in CompuServe's Graphics Developer's
- * Forum. The latest version of POV-Ray may be found there as well.
- *
- * 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.
- *
- *****************************************************************************/
-
-
- #ifndef BLOB_H
- #define BLOB_H
-
- #include "bsphere.h"
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define BLOB_OBJECT (STURM_OK_OBJECT+HIERARCHY_OK_OBJECT)
-
- /* Do not use the first bit!!! (Used for enter/exit in intersection test) */
-
- #define BLOB_SPHERE 2
- #define BLOB_CYLINDER 4
- #define BLOB_ELLIPSOID 8
- #define BLOB_BASE_HEMISPHERE 16
- #define BLOB_APEX_HEMISPHERE 32
- #define BLOB_BASE_HEMIELLIPSOID 64
- #define BLOB_APEX_HEMIELLIPSOID 128
-
-
- /* Define max. number of blob components. */
-
- #define MAX_BLOB_COMPONENTS 1000000
-
- /* Generate additional blob statistics. */
-
- #define BLOB_EXTRA_STATS 1
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Blob_Struct BLOB;
- typedef struct Blob_Element_Struct BLOB_ELEMENT;
- typedef struct Blob_Data_Struct BLOB_DATA;
- typedef struct blob_list_struct *blobstackptr;
-
- struct Blob_Element_Struct
- {
- short Type; /* Type of component: sphere, hemisphere, cylinder */
- int index;
- VECTOR O; /* Element's origin */
- DBL len; /* Cylinder's length */
- DBL rad2; /* Sphere's/Cylinder's radius^2 */
- DBL c[3]; /* Component's coeffs */
- DBL f[5]; /* Component's final coeffs */
- TEXTURE *Texture; /* Component's texture */
- TRANSFORM *Trans; /* Component's transformation */
- };
-
- struct Blob_Data_Struct
- {
- int References; /* Number of references */
- int Number_Of_Components; /* Number of components */
- DBL Threshold; /* Blob threshold */
- BLOB_ELEMENT *Entry; /* Array of blob components */
- BSPHERE_TREE *Tree; /* Bounding hierarchy */
- };
-
- struct Blob_Struct
- {
- OBJECT_FIELDS
- TRANSFORM *Trans;
- BLOB_DATA *Data; /* Pointer to blob data */
- TEXTURE **Element_Texture;
- };
-
- struct blob_list_struct
- {
- BLOB_ELEMENT elem; /* Current element */
- blobstackptr next; /* Pointer to next element */
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
- extern METHODS Blob_Methods;
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- void Set_Blob_Solver PARAMS((OBJECT *obj, int Sturm_Flag));
- void Init_Blob_Queue PARAMS((void));
- void BlobDelete PARAMS((OBJECT *obj));
- BLOB *Create_Blob PARAMS((void));
- void Make_Blob PARAMS((BLOB *blob, DBL threshold, blobstackptr bloblist, int npoints));
- blobstackptr Create_Blob_List_Element PARAMS((void));
- void Create_Blob_Element_Texture_List PARAMS((BLOB *Blob, blobstackptr BlobList, int npoints));
- void Determine_Blob_Textures PARAMS((BLOB *Blob, VECTOR P, int *Count, TEXTURE **Textures, DBL *Weights));
- void Test_Blob_Opacity PARAMS((BLOB *Blob));
-
- void Translate_Blob_Element PARAMS((BLOB_ELEMENT *Element, VECTOR Vector));
- void Rotate_Blob_Element PARAMS((BLOB_ELEMENT *Element, VECTOR Vector));
- void Scale_Blob_Element PARAMS((BLOB_ELEMENT *Element, VECTOR Vector));
- void Invert_Blob_Element PARAMS((BLOB_ELEMENT *Element));
- void Transform_Blob_Element PARAMS((BLOB_ELEMENT *Element, TRANSFORM *Trans));
- void Destroy_Blob_Queue PARAMS((void));
-
-
-
- #endif
-