M_Line3
M_LineRead3(AG_DataSource *ds)
{
M_Line3 L;
L.p = M_ReadVector3(ds);
L.d = M_ReadVector3(ds);
L.t = M_ReadReal(ds);
return (L);
}
int
M_PolyhedronRead(AG_DataSource *ds, M_Polyhedron *P)
{
Uint i, j;
P->nv = (Uint)AG_ReadUint32(ds);
P->ne = (Uint)AG_ReadUint32(ds);
P->nf = (Uint)AG_ReadUint32(ds);
if ((P->v = TryMalloc(P->nv*sizeof(M_Vector3))) == NULL ||
(P->e = TryMalloc(P->ne*sizeof(M_Halfedge))) == NULL ||
(P->f = TryMalloc(P->nf*sizeof(M_Facet))) == NULL)
goto fail;
/* Read vertices */
for (i = 0; i < P->nv; i++)
P->v[i] = M_ReadVector3(ds);
/* Read edges */
for (i = 0; i < P->ne; i+=2) {
M_Halfedge *eHead = &P->e[i];
M_Halfedge *eTail = &P->e[i+1];
eHead->v = (Uint)AG_ReadUint32(ds);
eTail->v = (Uint)AG_ReadUint32(ds);
if (eHead->v >= P->nv || eTail->v >= P->nv) {
AG_SetError("Edge%d: Bad vertex %d", i, eHead->v);
goto fail;
}
eHead->f = (Uint)AG_ReadUint32(ds);
eTail->f = (Uint)AG_ReadUint32(ds);
if (eHead->f >= P->nf || eTail->f >= P->nf) {
AG_SetError("Edge%d: Bad facet %d", i, eHead->f);
goto fail;
}
eHead->oe = i+1;
eTail->oe = i;
}
/* Read facets */
for (i = 0; i < P->nf; i++) {
M_Facet *f = &P->f[i];
f->n = (Uint)AG_ReadUint8(ds);
if ((f->e = TryMalloc(f->n*sizeof(Uint))) == NULL) {
goto fail;
}
for (j = 0; j < f->n; j++) {
f->e[j] = (Uint)AG_ReadUint32(ds);
if (f->e[j] >= P->ne) {
AG_SetError("Facet%d[%d]: Bad incident edge %d",
i, j, f->e[j]);
goto fail;
}
}
}
return (0);
fail:
return (-1);
}
M_Circle3
M_CircleRead3(AG_DataSource *ds)
{
M_Circle3 C;
C.p = M_ReadVector3(ds);
C.r = M_ReadReal(ds);
return (C);
}
