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Create technical graphics, diagrams, and posters using Python Pillow library with precise color control and typography.
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| name | python-pillow-graphics |
| description | Create technical graphics, diagrams, and posters using Python Pillow library with precise color control and typography. |
Pillow (PIL) is the standard Python library for image manipulation and creation. It's ideal for generating technical diagrams, posters, and graphics with precise control over colors, shapes, and text.
pip install Pillow
from PIL import Image, ImageDraw, ImageFont
# Create a new image with specific background color
width, height = 1920, 1200
background_color = (240, 240, 240) # RGB tuple
image = Image.new('RGB', (width, height), background_color)
draw = ImageDraw.Draw(image)
def hex_to_rgb(hex_color):
hex_color = hex_color.lstrip('#')
return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))
# Rectangles
draw.rectangle([x1, y1, x2, y2], fill=color, outline=color, width=stroke)
# Circles/Ellipses
draw.ellipse([x1, y1, x2, y2], fill=color, outline=color)
# Lines
draw.line([(x1, y1), (x2, y2)], fill=color, width=stroke_width)
# Polygons (for 3D perspective)
draw.polygon([(x1, y1), (x2, y2), (x3, y3)], fill=color, outline=color)
# Load system fonts or TTF files
try:
font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", size=48)
except:
font = ImageFont.load_default()
# Draw text
draw.text((x, y), "TEXT", fill=color, font=font, anchor="lm") # anchor: "lm"=left-middle
image.save('/path/to/image.png', quality=95, dpi=(300, 300))
Use polygons and shading to create depth:
# Front face (lighter)
draw.polygon([(x1, y1), (x2, y2), (x3, y3), (x4, y4)], fill=light_color)
# Side face (darker for depth)
draw.polygon([(x2, y2), (x3, y3), (x5, y5), (x6, y6)], fill=dark_color)
def draw_annotation_line(draw, start, end, text, color, font):
# Line
draw.line([start, end], fill=color, width=2)
# Arrow head
draw.polygon([end, (end[0]-8, end[1]-5), (end[0]-8, end[1]+5)], fill=color)
# Text
draw.text((end[0]+10, end[1]), text, fill=color, font=font)
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