def clip_tiling_area_to_range(w, h, pos, tiling_rng):
"""
Finds the intersection between the requested tiling area and the tiling range.
w (float): width of the tiling area
h (float): height of the tiling area
pos (dict -> float): current position of the stage
tiling_rng (dict -> list): the tiling range along x and y axes as
(xmin, ymin, xmax, ymax), or (xmin, ymax, xmax, ymin)
return (None or tuple of 4 floats): None if there is no intersection, or
the rectangle representing the intersection as (xmin, ymin, xmax, ymax).
"""
area_req = (pos["x"] - w / 2, pos["y"] - h / 2, pos["x"] + w / 2,
pos["y"] + h / 2)
# clip the tiling area, if needed (or find the intersection between the active range and the requested area)
return rect_intersect(area_req,
(tiling_rng["x"][0], tiling_rng["y"][1],
tiling_rng["x"][1], tiling_rng["y"][0]))
def convert_roi_phys_to_ccd(ccd, roi):
"""
Convert the ROI in physical coordinates into a optical detector (ccd) ROI (in pixels).
:param roi: (4 floats) The roi (ltrb) position in m.
:returns: (4 ints or None) The roi (ltrb) position in pixels, or None if no intersection.
"""
ccd_rect = get_ccd_fov(ccd)
logging.info("CCD FoV = %s", ccd_rect)
phys_width = (ccd_rect[2] - ccd_rect[0], ccd_rect[3] - ccd_rect[1])
logging.info("phys width: " + str(phys_width))
logging.info("roi: " + str(roi))
logging.info("ccd rect: " + str(ccd_rect))
# convert to a proportional ROI
proi = (
(roi[0] - ccd_rect[0]) / phys_width[0],
(roi[1] - ccd_rect[1]) / phys_width[1],
(roi[2] - ccd_rect[0]) / phys_width[0],
(roi[3] - ccd_rect[1]) / phys_width[1],
)
# inverse Y (because physical Y goes down, while pixel Y goes up)
proi = (proi[0], 1 - proi[3], proi[2], 1 - proi[1])
logging.info("proi: " + str(proi))
# convert to pixel values, rounding to slightly bigger area
res = ccd.resolution.value
pxroi = (
int(proi[0] * res[0]),
int(proi[1] * res[1]),
int(math.ceil(proi[2] * res[0])),
int(math.ceil(proi[3] * res[1])),
)
logging.info("pxroi: " + str(pxroi))
# Limit the ROI to the one visible in the FoV
trunc_roi = util.rect_intersect(pxroi, (0, 0) + res)
if trunc_roi is None:
return None
if trunc_roi != pxroi:
logging.warning(
"CCD FoV doesn't cover the whole ROI, it would need "
"a ROI of %s in CCD referential.", pxroi)
return trunc_roi
def get_ROA_rect(w, h, pos, tiling_rng):
"""
Finds the intersection between the requested tiling area
and the tiling range.
w (float): width of the tiling area
h (float): height of the tiling area
pos (dict -> float): current position of the stage
tiling_rng (dict -> list): the tiling range along x and y axes
"""
tl = pos["x"] - w / 2, pos["y"] + h / 2
br = pos["x"] + w / 2, pos["y"] - h / 2
# clip the tiling area, if needed (or find the intersection between the active range and the requested area)
# Note: the input is LTRB. The output is LBRT assuming y axis upwards, or LTRB assuming y axis downwards.
rect_pts = rect_intersect((tl[0], tl[1], br[0], br[1]),
(tiling_rng["x"][0], tiling_rng["y"][1],
tiling_rng["x"][1], tiling_rng["y"][0]))
return rect_pts
def convert_roi_phys_to_ccd(ccd, roi):
"""
Convert the ROI in physical coordinates into a CCD ROI (in pixels)
roi (4 floats): ltrb positions in m
return (4 ints or None): ltrb positions in pixels, or None if no intersection
"""
ccd_rect = get_ccd_fov(ccd)
logging.info("CCD FoV = %s", ccd_rect)
phys_width = (ccd_rect[2] - ccd_rect[0],
ccd_rect[3] - ccd_rect[1])
logging.info("phys width: " + str(phys_width))
logging.info("roi: " + str(roi))
logging.info("ccd rect: " + str(ccd_rect))
# convert to a proportional ROI
proi = ((roi[0] - ccd_rect[0]) / phys_width[0],
(roi[1] - ccd_rect[1]) / phys_width[1],
(roi[2] - ccd_rect[0]) / phys_width[0],
(roi[3] - ccd_rect[1]) / phys_width[1],
)
# inverse Y (because physical Y goes down, while pixel Y goes up)
proi = (proi[0], 1 - proi[3], proi[2], 1 - proi[1])
logging.info("proi: " + str(proi))
# convert to pixel values, rounding to slightly bigger area
shape = ccd.shape[0:2]
pxroi = (int(proi[0] * shape[0]),
int(proi[1] * shape[1]),
int(math.ceil(proi[2] * shape[0])),
int(math.ceil(proi[3] * shape[1])),
)
logging.info("pxroi: " + str(pxroi))
# Limit the ROI to the one visible in the FoV
trunc_roi = util.rect_intersect(pxroi, (0, 0) + shape)
if trunc_roi is None:
return None
if trunc_roi != pxroi:
logging.warning("CCD FoV doesn't cover the whole ROI, it would need "
"a ROI of %s in CCD referential.", pxroi)
return trunc_roi
def convert_roi_phys_to_ccd(self, roi):
"""
Convert the ROI in physical coordinates into a CCD ROI (in pixels)
roi (4 floats): ltrb positions in m
return (4 ints or None): ltrb positions in pixels, or None if no intersection
"""
ccd_rect = self.get_ccd_fov()
logging.debug("CCD FoV = %s", ccd_rect)
phys_width = (ccd_rect[2] - ccd_rect[0], ccd_rect[3] - ccd_rect[1])
# convert to a proportional ROI
proi = (
(roi[0] - ccd_rect[0]) / phys_width[0],
(roi[1] - ccd_rect[1]) / phys_width[1],
(roi[2] - ccd_rect[0]) / phys_width[0],
(roi[3] - ccd_rect[1]) / phys_width[1],
)
# inverse Y (because physical Y goes down, while pixel Y goes up)
proi = (proi[0], 1 - proi[3], proi[2], 1 - proi[1])
# convert to pixel values, rounding to slightly bigger area
shape = self.ccd.shape[0:2]
pxroi = (
int(proi[0] * shape[0]),
int(proi[1] * shape[1]),
int(math.ceil(proi[2] * shape[0])),
int(math.ceil(proi[3] * shape[1])),
)
# Limit the ROI to the one visible in the FoV
trunc_roi = util.rect_intersect(pxroi, (0, 0) + shape)
if trunc_roi is None:
return None
if trunc_roi != pxroi:
logging.warning(
"CCD FoV doesn't cover the whole ROI, it would need "
"a ROI of %s in CCD referential.", pxroi)
return trunc_roi
def test_clipping(self):
tmp = "{}: {} - {} -> {}"
for bb in bounding_boxes:
outside, touching, overlap = relative_boxes(bb)
for b in outside:
r = util.rect_intersect(b, bb)
msg = tmp.format("outside", b, bb, r)
self.assertIsNone(r, msg)
for b in touching:
r = util.rect_intersect(b, bb)
msg = tmp.format("touching", b, bb, r)
self.assertIsNone(r, msg)
for b in overlap:
r = util.rect_intersect(b, bb)
msg = tmp.format("overlap", b, bb, r)
self.assertIsNotNone(r, msg)
# 'Manual' checks
if bb == (-1, -1, 1, 1):
if b[:2] == (-2, -2):
self.assertEqual(r, (-1, -1, 0, 0), msg)
elif b[:2] == (0, -1):
self.assertEqual(r, (0, -1, 1, 1), msg)
elif b[:2] == (0, 0):
self.assertEqual(r, (0, 0, 1, 1), msg)
# full and exact overlap
b = bb
r = util.rect_intersect(b, bb)
self.assertEqual(r, bb)
# inner overlap
b = (bb[0] + 1, bb[1] + 1, bb[2], bb[3])
r = util.rect_intersect(b, bb)
self.assertEqual(r, b)
# overflowing overlap
b = (bb[0] - 1, bb[1] - 1, bb[2] + 1, bb[2] + 1)
r = util.rect_intersect(b, bb)
self.assertEqual(r, bb)
def test_clipping(self):
tmp = "{}: {} - {} -> {}"
for bb in bounding_boxes:
outside, touching, overlap = relative_boxes(bb)
for b in outside:
r = util.rect_intersect(b, bb)
msg = tmp.format("outside", b, bb, r)
self.assertIsNone(r, msg)
for b in touching:
r = util.rect_intersect(b, bb)
msg = tmp.format("touching", b, bb, r)
self.assertIsNone(r, msg)
for b in overlap:
r = util.rect_intersect(b, bb)
msg = tmp.format("overlap", b, bb, r)
self.assertIsNotNone(r, msg)
# 'Manual' checks
if bb == (-1, -1, 1, 1):
if b[:2] == (-2, -2):
self.assertEqual(r, (-1, -1, 0, 0), msg)
elif b[:2] == (0, -1):
self.assertEqual(r, (0, -1, 1, 1), msg)
elif b[:2] == (0, 0):
self.assertEqual(r, (0, 0, 1, 1), msg)
# full and exact overlap
b = bb
r = util.rect_intersect(b, bb)
self.assertEqual(r, bb)
# inner overlap
b = (bb[0] + 1, bb[1] + 1, bb[2], bb[3])
r = util.rect_intersect(b, bb)
self.assertEqual(r, b)
# overflowing overlap
b = (bb[0] - 1, bb[1] - 1, bb[2] + 1, bb[2] + 1)
r = util.rect_intersect(b, bb)
self.assertEqual(r, bb)
def convert_roi_phys_to_ccd(self, roi):
"""
Convert the ROI in physical coordinates into a CCD ROI (in pixels)
roi (4 floats): ltrb positions in m
return (4 ints or None): ltrb positions in pixels, or
"""
ccd_rect = self.get_ccd_fov()
logging.debug("CCD FoV = %s", ccd_rect)
phys_width = (ccd_rect[2] - ccd_rect[0],
ccd_rect[3] - ccd_rect[1])
# convert to a proportional ROI
proi = ((roi[0] - ccd_rect[0]) / phys_width[0],
(roi[1] - ccd_rect[1]) / phys_width[1],
(roi[2] - ccd_rect[0]) / phys_width[0],
(roi[3] - ccd_rect[1]) / phys_width[1],
)
# ensure it's in ltbr order
proi = util.normalize_rect(proi)
# convert to pixel values, rounding to slightly bigger area
shape = self.ccd.shape[0:2]
pxroi = (int(proi[0] * shape[0]),
int(proi[1] * shape[1]),
int(math.ceil(proi[2] * shape[0])),
int(math.ceil(proi[3] * shape[1])),
)
# Limit the ROI to the one visible in the FoV
trunc_roi = util.rect_intersect(pxroi, (0, 0) + shape)
if trunc_roi is None:
return None
if trunc_roi != pxroi:
logging.warning("CCD FoV doesn't cover the whole ROI, it would need "
"a ROI of %s in CCD referential.", pxroi)
return trunc_roi
