| 141 |
|
* Definitions for 3-d vector manipulation functions |
| 142 |
|
*/ |
| 143 |
|
|
| 144 |
< |
#ifdef SMLFLT |
| 145 |
< |
#define FLOAT float |
| 144 |
> |
#ifdef SMLFLT |
| 145 |
> |
#define FLOAT float |
| 146 |
> |
#define FTINY (1e-3) |
| 147 |
|
#else |
| 148 |
< |
#define FLOAT double |
| 148 |
> |
#define FLOAT double |
| 149 |
> |
#define FTINY (1e-6) |
| 150 |
|
#endif |
| 151 |
+ |
#define FHUGE (1e10) |
| 152 |
|
|
| 153 |
|
typedef FLOAT FVECT[3]; |
| 154 |
|
|
| 155 |
+ |
#define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2]) |
| 156 |
+ |
#define DOT(v1,v2) ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2]) |
| 157 |
+ |
#define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \ |
| 158 |
+ |
(vr)[1]=(v1)[1]+(f)*(v2)[1], \ |
| 159 |
+ |
(vr)[2]=(v1)[2]+(f)*(v2)[2]) |
| 160 |
+ |
|
| 161 |
+ |
#define is0vect(v) (DOT(v,v) < FTINY*FTINY) |
| 162 |
+ |
|
| 163 |
+ |
#define round0(x) if (x <= FTINY && x >= -FTINY) x = 0 |
| 164 |
+ |
|
| 165 |
|
#ifdef NOPROTO |
| 166 |
|
extern double normalize(); /* normalize a vector */ |
| 167 |
|
#else |
| 197 |
|
typedef struct { |
| 198 |
|
FVECT p, n; /* point and normal */ |
| 199 |
|
} C_VERTEX; /* vertex context */ |
| 200 |
+ |
|
| 201 |
+ |
#define isgrey(cxy) ((cxy)->cx > .31 && (cxy)->cx < .35 && \ |
| 202 |
+ |
(cxy)->cy > .31 && (cxy)->cy < .35) |
| 203 |
|
|
| 204 |
|
#define C_DEFCOLOR {.333,.333} |
| 205 |
|
#define C_DEFMATERIAL {NULL,1,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
