Lines Matching refs:z
107 tx->ctr.z = 0.0; in newscalarvol()
169 int x, y, z; in scalar_volume_texture() local
226 if (ry->d.z == 0.0) { in scalar_volume_texture()
227 if ((ry->o.z < bx->min.z) || (ry->o.z > bx->max.z)) in scalar_volume_texture()
231 tz1 = (bx->min.z - ry->o.z) / ry->d.z; in scalar_volume_texture()
232 tz2 = (bx->max.z - ry->o.z) / ry->d.z; in scalar_volume_texture()
256 bln.z = fabs(bx->min.z - bx->max.z); in scalar_volume_texture()
258 dt = sqrt(bln.x * bln.x + bln.y * bln.y + bln.z * bln.z) / tdist; in scalar_volume_texture()
270 pnt.z = ((ry->o.z + (ry->d.z * t)) - bx->min.z) / bln.z; in scalar_volume_texture()
274 z = (int)((vol->zres - 1.5) * pnt.z + 0.5); in scalar_volume_texture()
276 ptr = vol->data + ((vol->xres * vol->yres * z) + (vol->xres * y) + x); in scalar_volume_texture()