VOID PolyDataNormalize(OBJECT *po, MATRIX normMat)
{
INT i;
POINT coord;
VEC3 *pv; /* Ptr to vertex list. */
POLY *pp; /* Ptr to polygon data. */
ELEMENT *pe; /* Ptr to polygon element. */
/* Normalize bounding box. */
pe = po->pelem;
NormalizeBoundBox(&po->bv, normMat);
/* Normalize vertex list. */
pp = (POLY *)pe->data;
pv = pp->vptr;
coord[0] = (*pv)[0];
coord[1] = (*pv)[1];
coord[2] = (*pv)[2];
coord[3] = 1.0;
/* Transform coordinate by xform matrix. */
while (coord[0] != HUGE_REAL && coord[1] != HUGE_REAL && coord[2] != HUGE_REAL)
{
VecMatMult(coord, normMat, coord);
(*pv)[0] = coord[0];
(*pv)[1] = coord[1];
(*pv)[2] = coord[2];
pv++;
coord[0] = (*pv)[0];
coord[1] = (*pv)[1];
coord[2] = (*pv)[2];
coord[3] = 1.0;
}
/* Normalize bounding boxes of object elements. */
for (i = 0; i < po->numelements; i++)
{
pp = (POLY *)pe->data;
NormalizeBoundBox(&pe->bv, normMat);
/* Find new d of plane equation. */
pv = pp->vptr + (*(pp->vindex));
pp->d = -(pp->norm[0]*(*pv)[0] + pp->norm[1]*(*pv)[1] + pp->norm[2]*(*pv)[2]);
pe++;
}
}
VOID SphDataNormalize(OBJECT *po, MATRIX normMat)
{
INT i;
SPHERE *ps; /* Ptr to sphere data. */
ELEMENT *pe; /* Ptr to sphere element. */
POINT surf_point; /* Point on surface. */
POINT center_point; /* Center point. */
POINT rad_vector; /* Radius vector. */
NormalizeBoundBox(&po->bv, normMat);
pe = po->pelem;
for (i = 0; i < po->numelements; i++)
{
ps = (SPHERE *)pe->data;
NormalizeBoundBox(&pe->bv, normMat);
surf_point[0] = ps->center[0] + ps->rad;
surf_point[1] = ps->center[1];
surf_point[2] = ps->center[2];
surf_point[3] = 1.0;
center_point[0] = ps->center[0];
center_point[1] = ps->center[1];
center_point[2] = ps->center[2];
center_point[3] = 1.0;
/* Transform center point. */
VecMatMult(center_point, normMat, center_point);
VecMatMult(surf_point, normMat, surf_point);
/* Find new radius. */
VecSub(rad_vector, surf_point, center_point);
VecCopy(ps->center, center_point);
ps->rad = VecLen(rad_vector);
ps->rad2 = ps->rad * ps->rad;
pe++;
}
}
