| /*************************************************************************/ |
| /* */ |
| /* Copyright (c) 1994 Stanford University */ |
| /* */ |
| /* All rights reserved. */ |
| /* */ |
| /* Permission is given to use, copy, and modify this software for any */ |
| /* non-commercial purpose as long as this copyright notice is not */ |
| /* removed. All other uses, including redistribution in whole or in */ |
| /* part, are forbidden without prior written permission. */ |
| /* */ |
| /* This software is provided with absolutely no warranty and no */ |
| /* support. */ |
| /* */ |
| /*************************************************************************/ |
| |
| /************************************************************************ |
| * * |
| * constants.h: constants needed for rendering system * |
| * * |
| ************************************************************************/ |
| |
| |
| #define PI 3.14159265358979323846 |
| |
| #define MAX_NUMPROC 1024 |
| #define NODE0 0 /* processor no. to which first process is bound */ |
| |
| /* rendering parameters */ |
| #define PIXELS_PER_BLOCK_DIM 4 |
| #define ZSCALE 1 |
| #ifdef DIM |
| //#define ROTATE_STEPS 100 |
| #define STEP_SIZE 3 |
| #else |
| //#define ROTATE_STEPS 100 |
| #define STEP_SIZE 3 |
| #endif |
| #define ROOT 0 |
| |
| /* BOOLEAN constants used */ |
| #define TRUE 1 /* BOOLEAN defined as a user type */ |
| #define FALSE 0 /* in my_types.h */ |
| #define YES 1 |
| #define NO 0 |
| |
| /* Definition of object space coordinates: */ |
| #define NM 3 /* number of coordinates */ |
| #define X 0 /* x-coordinate */ |
| #define Y 1 /* y-coordinate */ |
| #define Z 2 /* z-coordinate */ |
| |
| /* Definition of pixel image coordinates: */ |
| #define NI 2 /* number of coordinates */ |
| |
| /* NORMAL constant using 16-bit signed short */ |
| #if 0 |
| #define NORM_LSHIFT 127.0 /* left shift to store normal as short */ |
| #define NORM_RSHIFT .00787401574803149606 |
| #define LOOKUP_PREC 255 |
| #define LOOKUP_HSIZE 65024 /* = (255*127+127)*2 */ |
| #define LOOKUP_SIZE 130050 /* = 255*255*2 */ |
| #endif |
| #define NORM_LSHIFT 31.0 |
| #define NORM_RSHIFT .03225806451612903225 |
| #define LOOKUP_PREC 63 |
| #define LOOKUP_HSIZE 3968 |
| #define LOOKUP_SIZE 7938 |
| |
| /* PIXEL constants used */ |
| #define NULL_PIXEL 0 /* initialization value for pixel */ |
| #define PIX_CUR_VERSION 1 /* version of .pix file used */ |
| |
| /* Definition of string sizes: */ |
| #define FILENAME_SIZE 200 /* max user filename */ |
| #define FILENAME_STRING_SIZE (FILENAME_SIZE+1) /* + 1 for null char */ |
| |
| /* Definition of minimum and maximum values: */ |
| #define MIN_DENSITY 0 /* density */ |
| #define MAX_DENSITY 255 /* density */ |
| #define MIN_MAGNITUDE 0 /* magnitude of density gradient */ |
| #define MAX_MAGNITUDE 442 /* sqrt(MAX_GRADIENT**2*3) */ |
| #define MIN_OPACITY 0.0 /* compositing opacity */ |
| #define MAX_OPACITY 1.0 /* (0.0=transparent, 1.0=opaque) */ |
| #define MIN_OPC 0 /* */ |
| #define MAX_OPC 255 /* */ |
| #define INV_MAX_OPC .00392156862745098039 |
| #define MIN_PIXEL 0 /* pixel or voxel color or opacity */ |
| #define MAX_PIXEL 255 /* */ |
| #define INV_MAX_PIXEL .00392156862745098039 |
| #define MAX_INLEN 1024 /* size of any input map or space */ |
| #define MAX_OUTLEN 4096 /* size of any output map or space */ |
| #define SMALL 0.00001 /* Don't use {SMALL,BIG} in single precision */ |
| #define BIG 9999.999 /* expressions alongside {big,small} numbers */ |
| /*#define MAX_INT 4294967295*/ /* 2^32-1 is the maximum integer */ |
| |
| /* Definition of global constants assumed */ |
| #define INSET 1 /* inset assumes gradient */ |
| /* operator not 5x5 */ |
| |
| #define MAX_PYRLEVEL 9 /* Maximum level in binary pyramid */ |
| /* (allows 1x1x1..512x512x512 voxels) */ |
| |
