37 |
|
FLOAT (*vtlist)[2]; /* map vertex list */ |
38 |
|
int nvts; |
39 |
|
|
40 |
< |
typedef FLOAT BARYCCM[3][4]; /* barycentric coordinate system */ |
40 |
> |
typedef struct { |
41 |
> |
int ax; /* major axis */ |
42 |
> |
FLOAT tm[2][3]; /* transformation */ |
43 |
> |
} BARYCCM; |
44 |
|
|
45 |
|
typedef int VNDX[3]; /* vertex index (point,map,normal) */ |
46 |
|
|
587 |
|
patOK = 0; |
588 |
|
#endif |
589 |
|
if (texOK | patOK) |
590 |
< |
if (comp_baryc(bvecs, vlist[v1i[0]], vlist[v2i[0]], |
590 |
> |
if (comp_baryc(&bvecs, vlist[v1i[0]], vlist[v2i[0]], |
591 |
|
vlist[v3i[0]]) < 0) |
592 |
|
return(-1); |
593 |
|
/* put out texture (if any) */ |
595 |
|
printf("\n%s texfunc %s\n", mod, TEXNAME); |
596 |
|
mod = TEXNAME; |
597 |
|
printf("4 dx dy dz %s\n", TCALNAME); |
598 |
< |
printf("0\n21\n"); |
599 |
< |
put_baryc(bvecs); |
598 |
> |
printf("0\n16 "); |
599 |
> |
put_baryc(&bvecs); |
600 |
|
printf("\t%14.12g %14.12g %14.12g\n", |
601 |
|
vnlist[v1i[2]][0], vnlist[v2i[2]][0], |
602 |
|
vnlist[v3i[2]][0]); |
613 |
|
printf("\n%s colorpict %s\n", mod, PATNAME); |
614 |
|
mod = PATNAME; |
615 |
|
printf("7 noneg noneg noneg %s %s u v\n", mapname, TCALNAME); |
616 |
< |
printf("0\n18\n"); |
617 |
< |
put_baryc(bvecs); |
616 |
> |
printf("0\n13 "); |
617 |
> |
put_baryc(&bvecs); |
618 |
|
printf("\t%f %f %f\n", vtlist[v1i[1]][0], |
619 |
|
vtlist[v2i[1]][0], vtlist[v3i[1]][0]); |
620 |
|
printf("\t%f %f %f\n", vtlist[v1i[1]][1], |
634 |
|
|
635 |
|
int |
636 |
|
comp_baryc(bcm, v1, v2, v3) /* compute barycentric vectors */ |
637 |
< |
register BARYCCM bcm; |
637 |
> |
register BARYCCM *bcm; |
638 |
|
FLOAT *v1, *v2, *v3; |
639 |
|
{ |
640 |
|
FLOAT *vt; |
641 |
|
FVECT va, vab, vcb; |
642 |
|
double d; |
643 |
+ |
int ax0, ax1; |
644 |
|
register int i, j; |
645 |
< |
|
646 |
< |
for (j = 0; j < 3; j++) { |
647 |
< |
for (i = 0; i < 3; i++) { |
648 |
< |
vab[i] = v1[i] - v2[i]; |
649 |
< |
vcb[i] = v3[i] - v2[i]; |
650 |
< |
} |
651 |
< |
d = DOT(vcb,vcb); |
645 |
> |
/* compute major axis */ |
646 |
> |
for (i = 0; i < 3; i++) { |
647 |
> |
vab[i] = v1[i] - v2[i]; |
648 |
> |
vcb[i] = v3[i] - v2[i]; |
649 |
> |
} |
650 |
> |
fcross(va, vab, vcb); |
651 |
> |
bcm->ax = ABS(va[0]) > ABS(va[1]) ? 0 : 1; |
652 |
> |
bcm->ax = ABS(va[bcm->ax]) > ABS(va[2]) ? bcm->ax : 2; |
653 |
> |
ax0 = (bcm->ax + 1) % 3; |
654 |
> |
ax1 = (bcm->ax + 2) % 3; |
655 |
> |
for (j = 0; j < 2; j++) { |
656 |
> |
vab[0] = v1[ax0] - v2[ax0]; |
657 |
> |
vcb[0] = v3[ax0] - v2[ax0]; |
658 |
> |
vab[1] = v1[ax1] - v2[ax1]; |
659 |
> |
vcb[1] = v3[ax1] - v2[ax1]; |
660 |
> |
d = vcb[0]*vcb[0] + vcb[1]*vcb[1]; |
661 |
|
if (d <= FTINY) |
662 |
|
return(-1); |
663 |
< |
d = DOT(vcb,vab)/d; |
664 |
< |
for (i = 0; i < 3; i++) |
665 |
< |
va[i] = vab[i] - vcb[i]*d; |
666 |
< |
d = DOT(va,va); |
663 |
> |
d = (vcb[0]*vab[0]+vcb[1]*vab[1])/d; |
664 |
> |
va[0] = vab[0] - vcb[0]*d; |
665 |
> |
va[1] = vab[1] - vcb[1]*d; |
666 |
> |
d = va[0]*va[0] + va[1]*va[1]; |
667 |
|
if (d <= FTINY) |
668 |
|
return(-1); |
669 |
< |
for (i = 0; i < 3; i++) { |
670 |
< |
va[i] /= d; |
671 |
< |
bcm[j][i] = va[i]; |
659 |
< |
} |
660 |
< |
bcm[j][3] = -DOT(v2,va); |
669 |
> |
bcm->tm[j][0] = va[0] /= d; |
670 |
> |
bcm->tm[j][1] = va[1] /= d; |
671 |
> |
bcm->tm[j][2] = -(v2[ax0]*va[0]+v2[ax1]*va[1]); |
672 |
|
/* rotate vertices */ |
673 |
|
vt = v1; |
674 |
|
v1 = v2; |
680 |
|
|
681 |
|
|
682 |
|
put_baryc(bcm) /* put barycentric coord. vectors */ |
683 |
< |
register BARYCCM bcm; |
683 |
> |
register BARYCCM *bcm; |
684 |
|
{ |
685 |
< |
register int i; |
686 |
< |
|
687 |
< |
for (i = 0; i < 3; i++) |
688 |
< |
printf("%14.8f %14.8f %14.8f %14.8f\n", |
689 |
< |
bcm[i][0], bcm[i][1], bcm[i][2], bcm[i][3]); |
685 |
> |
printf("\t%d\n", bcm->ax); |
686 |
> |
printf("%14.8f %14.8f %14.8f\n", |
687 |
> |
bcm->tm[0][0], bcm->tm[0][1], bcm->tm[0][2]); |
688 |
> |
printf("%14.8f %14.8f %14.8f\n", |
689 |
> |
bcm->tm[1][0], bcm->tm[1][1], bcm->tm[1][2]); |
690 |
|
} |
691 |
|
|
692 |
|
|