Dokumentation und Co
This commit is contained in:
parent
25019c8ccc
commit
0e792d4304
1 changed files with 53 additions and 5 deletions
|
@ -1,3 +1,4 @@
|
|||
import colorsys
|
||||
import random
|
||||
from datetime import date
|
||||
from io import BytesIO
|
||||
|
@ -57,10 +58,19 @@ async def get_picture():
|
|||
|
||||
|
||||
async def load_picture_standard() -> Image.Image:
|
||||
img = Image.open("hand.png")
|
||||
width, height = img.size
|
||||
square = min(img.size)
|
||||
"""
|
||||
Bild laden und einen quadratischen Ausschnitt
|
||||
aus der Mitte nehmen
|
||||
"""
|
||||
|
||||
# Bild laden
|
||||
img = Image.open("hand.png")
|
||||
|
||||
# Größen bestimmen
|
||||
width, height = img.size
|
||||
square = min(width, height)
|
||||
|
||||
# Bild zuschneiden und skalieren
|
||||
img = img.crop(box=(
|
||||
int((width - square)/2),
|
||||
int((height - square)/2),
|
||||
|
@ -73,6 +83,7 @@ async def load_picture_standard() -> Image.Image:
|
|||
resample=Image.ANTIALIAS,
|
||||
)
|
||||
|
||||
# Farbmodell festlegen
|
||||
return img.convert("RGB")
|
||||
|
||||
|
||||
|
@ -84,8 +95,16 @@ async def get_text_box(
|
|||
anchor: str | None = "mm",
|
||||
**text_kwargs,
|
||||
) -> tuple[int, int, int, int] | None:
|
||||
"""
|
||||
Koordinaten (links, oben, rechts, unten) des betroffenen
|
||||
Rechtecks bestimmen, wenn das Bild `img` mit einem Text
|
||||
versehen wird
|
||||
"""
|
||||
|
||||
# Neues 1-Bit Bild, gleiche Größe
|
||||
mask = Image.new(mode="1", size=img.size, color=0)
|
||||
|
||||
# Text auf Maske auftragen
|
||||
ImageDraw.Draw(mask).text(
|
||||
xy=xy,
|
||||
text=text,
|
||||
|
@ -95,6 +114,7 @@ async def get_text_box(
|
|||
**text_kwargs,
|
||||
)
|
||||
|
||||
# betroffenen Pixelbereich bestimmen
|
||||
return mask.getbbox()
|
||||
|
||||
|
||||
|
@ -102,6 +122,11 @@ async def get_average_color(
|
|||
img: Image.Image,
|
||||
box: tuple[int, int, int, int],
|
||||
) -> tuple[int, int, int]:
|
||||
"""
|
||||
Durchschnittsfarbe eines rechteckigen Ausschnitts in
|
||||
einem Bild `img` berechnen
|
||||
"""
|
||||
|
||||
pixel_data = img.crop(box).getdata()
|
||||
mean_color: np.ndarray = np.mean(pixel_data, axis=0)
|
||||
|
||||
|
@ -116,9 +141,17 @@ async def get_picture_for_day(
|
|||
letter: str = Depends(get_letter),
|
||||
img: Image.Image = Depends(load_picture_standard),
|
||||
) -> StreamingResponse:
|
||||
font = ImageFont.truetype("Lena.ttf", 50)
|
||||
xy = (200, 150)
|
||||
"""
|
||||
Bild für einen Tag erstellen
|
||||
"""
|
||||
|
||||
# Font laden
|
||||
font = ImageFont.truetype("Lena.ttf", 50)
|
||||
|
||||
# Position des Buchstaben bestimmen
|
||||
xy = (100, 150)
|
||||
|
||||
# betroffenen Bildbereich bestimmen
|
||||
text_box = await get_text_box(
|
||||
img=img,
|
||||
xy=xy,
|
||||
|
@ -127,11 +160,25 @@ async def get_picture_for_day(
|
|||
)
|
||||
|
||||
if text_box is not None:
|
||||
# Durchschnittsfarbe bestimmen
|
||||
text_color = await get_average_color(
|
||||
img=img,
|
||||
box=text_box,
|
||||
)
|
||||
|
||||
# etwas heller/dunkler machen
|
||||
tc_h, tc_s, tc_v = colorsys.rgb_to_hsv(*text_color)
|
||||
|
||||
if tc_v < 127:
|
||||
tc_v += 3
|
||||
|
||||
else:
|
||||
tc_v -= 3
|
||||
|
||||
text_color = colorsys.hsv_to_rgb(tc_h, tc_s, tc_v)
|
||||
text_color = tuple(int(val) for val in text_color)
|
||||
|
||||
# Buchstaben verstecken
|
||||
ImageDraw.Draw(img).text(
|
||||
xy=xy,
|
||||
text=letter,
|
||||
|
@ -140,6 +187,7 @@ async def get_picture_for_day(
|
|||
fill=text_color,
|
||||
)
|
||||
|
||||
# Bilddaten in Puffer laden
|
||||
img_buffer = BytesIO()
|
||||
img.save(img_buffer, format="PNG", quality=85)
|
||||
img_buffer.seek(0)
|
||||
|
|
Loading…
Reference in a new issue