Lines Matching refs:x
105 xvol->tex->ctr.x = 0.0; in newextvol()
174 if (ry->d.x == 0.0) { in ext_volume_texture()
175 if ((ry->o.x < bx->min.x) || (ry->o.x > bx->max.x)) in ext_volume_texture()
179 tx1 = (bx->min.x - ry->o.x) / ry->d.x; in ext_volume_texture()
180 tx2 = (bx->max.x - ry->o.x) / ry->d.x; in ext_volume_texture()
247 bln.x = fabs(bx->min.x - bx->max.x); in ext_volume_texture()
257 pnt.x = ((ry->o.x + (ry->d.x * t)) - bx->min.x) / bln.x; in ext_volume_texture()
262 scalar = xvol->evaluator(pnt.x, pnt.y, pnt.z); in ext_volume_texture()
278 N.x = (xvol->evaluator(pnt.x - ddt, pnt.y, pnt.z) - in ext_volume_texture()
279 xvol->evaluator(pnt.x + ddt, pnt.y, pnt.z)) * in ext_volume_texture()
282 N.y = (xvol->evaluator(pnt.x, pnt.y - ddt, pnt.z) - in ext_volume_texture()
283 xvol->evaluator(pnt.x, pnt.y + ddt, pnt.z)) * in ext_volume_texture()
286 N.z = (xvol->evaluator(pnt.x, pnt.y, pnt.z - ddt) - in ext_volume_texture()
287 xvol->evaluator(pnt.x, pnt.y, pnt.z + ddt)) * in ext_volume_texture()
291 if ((N.x * N.x + N.y * N.y + N.z * N.z) > 0.0) { in ext_volume_texture()