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Add timestamps to SPC outlook maps

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XANTRONIX 2025-04-01 12:06:17 -04:00
parent ef23e296c7
commit 5647279e2c
2 changed files with 40 additions and 5 deletions
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4
bin/xmet-spc-render-file
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@ -41,7 +41,7 @@ def render_categorical(conus: SPCOutlookMap,
if args.dark: if args.dark:
cr.set_source_rgb(1, 1, 1) cr.set_source_rgb(1, 1, 1)
conus.draw_annotation(cr, f"Day {outlook.day} Categorical Severe Weather Outlook") conus.draw_annotation(cr, outlook, SPCOutlookType.CATEGORICAL)
def render_probabilistic(conus: SPCOutlookMap, def render_probabilistic(conus: SPCOutlookMap,
outlook: SPCOutlook, outlook: SPCOutlook,
@ -66,7 +66,7 @@ def render_probabilistic(conus: SPCOutlookMap,
hazard = ' '.join(map(lambda p: p.lower().capitalize(), hazard.split(' '))) hazard = ' '.join(map(lambda p: p.lower().capitalize(), hazard.split(' ')))
conus.draw_annotation(cr, f"Day {outlook.day} Probabilistic {hazard} Risk") conus.draw_annotation(cr, outlook, SPCOutlookType.PROBABILISTIC, hazard)
argparser = argparse.ArgumentParser(description='Render graphical SPC outlooks from text file') argparser = argparse.ArgumentParser(description='Render graphical SPC outlooks from text file')
argparser.add_argument('db', help='Spatialite database file') argparser.add_argument('db', help='Spatialite database file')

41
lib/xmet/spc.py
View file

@ -4,6 +4,8 @@ import shapely
import datetime import datetime
import cairo import cairo
from typing import Optional
from xmet.db import Database, DatabaseTable from xmet.db import Database, DatabaseTable
from xmet.coord import COORD_SYSTEM from xmet.coord import COORD_SYSTEM
from xmet.city import City from xmet.city import City
@ -733,17 +735,50 @@ class SPCOutlookMap(EquirectMap):
cr.restore() cr.restore()
def draw_annotation(self, cr: cairo.Context, text: str): def draw_annotation(self,
cr: cairo.Context,
outlook: SPCOutlook,
kind: SPCOutlookType,
hazard: Optional[str]=None):
cr.save() cr.save()
cr.select_font_face(self.TEXT_FONT) cr.select_font_face(self.TEXT_FONT)
cr.set_font_size(28) cr.set_font_size(28)
if kind is SPCOutlookType.CATEGORICAL:
text = f"Day {outlook.day} Categorical Severe Weather Outlook"
elif kind is SPCOutlookType.PROBABILISTIC:
text = f"Day {outlook.day} Probabilistic {hazard} Risk"
extents = cr.text_extents(text) extents = cr.text_extents(text)
cr.move_to(self.width - extents.width - 48, x = self.width - extents.width - 48
self.height - extents.height - 16) y = self.height - extents.height - 16
cr.move_to(x, y)
cr.show_text(text)
#
# Draw timestamp
#
cr.set_font_size(14)
text = "Issued %s; valid %s" % (
outlook.timestamp_issued.strftime("%Y-%m-%d %H:%M UTC"),
outlook.timestamp_start.strftime("%Y-%m-%d %H:%M UTC"),
)
extents = cr.text_extents(text)
x = self.width - extents.width - 32
y = 8 + extents.height
cr.set_source_rgba(1, 1, 1, 0.9)
cr.rectangle(x - 4, y - 4, extents.width + 8, extents.height + 8)
cr.fill()
cr.set_source_rgb(0, 0, 0)
cr.move_to(x, y + extents.height)
cr.show_text(text) cr.show_text(text)
cr.restore() cr.restore()