from swmmio.defs.constants import red, purple, lightblue, lightgreen, black, lightgrey, grey
from swmmio.defs.config import FONT_PATH
from swmmio.graphics.utils import circle_bbox, length_bw_coords, angle_bw_points, midpoint
from PIL import Image, ImageDraw, ImageFont, ImageOps
from time import strftime
import math
import os
# FUNCTIONS FOR COMPUTING THE VISUAL CHARACTERISTICS OF MODEL ELEMENTS
[docs]def node_draw_size(node):
"""given a row of a nodes() dataframe, return the size it should be drawn"""
if 'draw_size' in node.axes[0]:
# if this value has already been calculated
return node.draw_size
radius = 0 # aka don't show this node by default
if 'HoursFlooded' in node and node.HoursFlooded >= 0.083:
radius = node.HoursFlooded * 3
return radius
[docs]def node_draw_color(node):
"""given a row of a nodes() dataframe, return the color it should be drawn"""
if 'draw_color' in node.axes[0]:
# if this value has already been calculated
return node.draw_color
color = '#d2d2e6' # (210, 210, 230) #default color
if 'HoursFlooded' in node and node.HoursFlooded >= 0.083:
color = red
return color
[docs]def conduit_draw_size(conduit):
"""return the draw size of a conduit"""
if 'draw_size' in conduit.axes[0]:
# if this value has already been calculated
return conduit.draw_size
draw_size = 1
if 'MaxQPerc' in conduit and conduit.MaxQPerc >= 1:
capacity = conduit.MaxQ / conduit.MaxQPerc
stress = conduit.MaxQ / capacity
fill = gradient_grey_red(conduit.MaxQ * 100, 0, capacity * 300)
draw_size = int(round(math.pow(stress * 10, 0.8)))
elif 'Geom1' in conduit:
draw_size = conduit.Geom1
return draw_size
[docs]def conduit_draw_color(conduit):
"""return the draw color of a conduit"""
if 'draw_color' in conduit.axes[0]:
# if this value has already been calculated
return conduit.draw_color
fill = '#787882' # (120, 120, 130)
if 'MaxQPerc' in conduit and conduit.MaxQPerc >= 1:
capacity = conduit.MaxQ / conduit.MaxQPerc
stress = conduit.MaxQ / capacity
fill = gradient_grey_red(conduit.MaxQ * 100, 0, capacity * 300)
return fill
[docs]def parcel_draw_color(parcel, style='risk'):
if style == 'risk':
fill = gradient_color_red(parcel.HoursFlooded + 0.5, 0, 3)
if style == 'delta':
fill = lightgrey # default
if parcel.Category == 'increased_flooding':
# parcel previously flooded, now floods more
fill = red
if parcel.Category == 'new_flooding':
# parcel previously did not flood, now floods in proposed conditions
fill = purple
if parcel.Category == 'decreased_flooding':
# parcel flooding problem decreased
fill = lightblue # du.lightgrey
if parcel.Category == 'eliminated_flooding':
# parcel flooding problem eliminated
fill = lightgreen
return fill
# PIL DRAW METHODS APPLIED TO ImageDraw OBJECTS
[docs]def draw_node(node, draw):
"""draw a node to the given PIL ImageDraw object"""
color = node_draw_color(node)
radius = node_draw_size(node)
draw.ellipse(circle_bbox(node.draw_coords[0], radius), fill=color)
[docs]def draw_conduit(conduit, draw):
# default fill and size
fill = conduit_draw_color(conduit)
draw_size = int(conduit_draw_size(conduit))
xys = conduit.draw_coords
# draw that thing
draw.line(xys, fill=fill, width=draw_size)
if length_bw_coords(xys[0], xys[-1]) > draw_size * 0.75:
# if length is long enough, add circles on the ends to smooth em out
# this check avoids circles being drawn for tiny pipe segs
draw.ellipse(circle_bbox(xys[0], draw_size * 0.5), fill=fill)
draw.ellipse(circle_bbox(xys[1], draw_size * 0.5), fill=fill)
[docs]def draw_parcel_risk(parcel, draw):
fill = gradient_color_red(parcel.HoursFlooded + 0.5, 0, 3)
draw.polygon(parcel.draw_coords, fill=fill)
[docs]def draw_parcel_risk_delta(parcel, draw):
if parcel.Category == 'increased_flooding':
# parcel previously flooded, now floods more
fill = red
if parcel.Category == 'new_flooding':
# parcel previously did not flood, now floods in proposed conditions
fill = purple
if parcel.Category == 'decreased_flooding':
# parcel flooding problem decreased
fill = lightblue # du.lightgrey
if parcel.Category == 'eliminated_flooding':
# parcel flooding problem eliminated
fill = lightgreen
draw.polygon(parcel.draw_coords, fill=fill)
[docs]def annotate_streets(df, img, text_col):
# confirm font file location
if not os.path.exists(FONT_PATH):
print('Error loading default font. Check your FONT_PATH')
return None
unique_sts = df[text_col].unique()
for street in unique_sts:
draw_coords = df.loc[df.ST_NAME == street, 'draw_coords'].tolist()[0]
coords = df.loc[df.ST_NAME == street, 'coords'].tolist()[0]
font = ImageFont.truetype(FONT_PATH, int(25))
imgTxt = Image.new('L', font.getsize(street))
drawTxt = ImageDraw.Draw(imgTxt)
drawTxt.text((0, 0), street, font=font, fill=(10, 10, 12))
angle = angle_bw_points(coords[0], coords[1])
texrot = imgTxt.rotate(angle, expand=1)
mpt = midpoint(draw_coords[0], draw_coords[1])
img.paste(ImageOps.colorize(texrot, (0, 0, 0), (10, 10, 12)), mpt, texrot)
[docs]def gradient_grey_red(x, xmin, xmax):
range = xmax - xmin
rMin = 100
bgMax = 100
rScale = (255 - rMin) / range
bgScale = (bgMax) / range
x = min(x, xmax) # limit any vals to the prescribed max
# print "range = " + str(range)
# print "scale = " + str(scale)
r = int(round(x * rScale + rMin))
g = int(round(bgMax - x * bgScale))
b = int(round(bgMax - x * bgScale))
return (r, g, b)
[docs]def line_size(q, exp=1):
return int(round(math.pow(q, exp)))
[docs]def gradient_color_red(x, xmin, xmax, startCol=lightgrey):
range = xmax - xmin
rMin = startCol[0]
gMax = startCol[1]
bMax = startCol[2]
rScale = (255 - rMin) / range
gScale = (gMax) / range
bScale = (bMax) / range
x = min(x, xmax) # limit any vals to the prescribed max
# print "range = " + str(range)
# print "scale = " + str(scale)
r = int(round(x * rScale + rMin))
g = int(round(gMax - x * gScale))
b = int(round(bMax - x * bScale))
return (r, g, b)
[docs]def annotate_title(title, draw):
size = (draw.im.getbbox()[2], draw.im.getbbox()[3])
scale = 1 * size[0] / 2048
fnt = ImageFont.truetype(FONT_PATH, int(40 * scale))
draw.text((10, 15), title, fill=black, font=fnt)
[docs]def annotate_timestamp(draw):
size = (draw.im.getbbox()[2], draw.im.getbbox()[3])
scale = 1 * size[0] / 2048
fnt = ImageFont.truetype(FONT_PATH, int(20 * scale))
timestamp = strftime("%b-%d-%Y %H:%M:%S")
txt_height = draw.textsize(timestamp, fnt)[1]
txt_width = draw.textsize(timestamp, fnt)[0]
xy = (size[0] - txt_width - 10, 15)
draw.text(xy, timestamp, fill=grey, font=fnt)
[docs]def annotate_details(txt, draw):
size = (draw.im.getbbox()[2], draw.im.getbbox()[3])
scale = 1 * size[0] / 2048
fnt = ImageFont.truetype(FONT_PATH, int(20 * scale))
txt_height = draw.textsize(txt, fnt)[1]
draw.text((10, size[1] - txt_height - 10),
txt, fill=black, font=fnt)