| 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 |
|
|
