Add gallery of available designs

Render all the designs currently available into images showcasing them
for the purpose of displaying it on the Factorio Mod portal.

assemble_image.py

@@ -0,0 +1,108 @@
+from PIL import Image, ImageFont, ImageDraw
+from designs import models
+
+def make_image(output, items, header, render, text_width, col_width, cols, description=None, transpose=False, scale=1):
+	col_width += text_width
+	row_width = int(256 * scale)
+	header_height = 180
+	description_height = 100 if description else 0
+	footer_height = 80
+	rows = (len(items) + cols - 1) // cols
+
+	width = cols * col_width
+	height = header_height + description_height + rows * row_width + footer_height
+
+	font = ImageFont.truetype("FiraSans-Regular", 52)
+	output_im = Image.new("RGBA", (width, height))
+	ctx = ImageDraw.Draw(output_im)
+	def paste_im(model, variant, co):
+		im = Image.open(f"src/graphics/technology/{model}_{variant.replace('liquid', 'clear')}.png")
+		src = im.resize((int(256 * scale), int(256 * scale)), 1) if scale != 1 else im
+		output_im.paste(src, co)
+		im.close()
+
+	white = (255, 255, 255, 255)
+	def text_im(text, co):
+		ctx.text(co, text, font=font, fill=white, anchor="lm")
+
+	for i, item in enumerate(items):
+		if transpose:
+			col, row = i % cols, i // cols
+		else:
+			col, row = i // rows, i % rows
+		x, y = col * col_width, header_height + description_height + row * row_width
+		render(item, x, y, paste_im, text_im)
+
+
+	if description:
+		ctx.text((width / 2, header_height + description_height / 2 - 40), description, font=font, fill=white, anchor="mm")
+	h_font = ImageFont.truetype("FiraSans-Bold", 100)
+	ctx.text((width / 2, header_height / 2), header, font=h_font, fill=white, anchor="mm")
+	f_font = ImageFont.truetype("FiraSans-Regular", 40)
+	ctx.text((width - 10, height - 10), "Quality Glassware / by Hornwitser / CC BY-SA 4.0", font=f_font, fill=white, anchor="rd")
+
+
+	print(f"saving {output}")
+	output_im.save(output)
+
+def render_model(model, x, y, paste_im, text_im):
+	name = model["name"]
+	print(f"pasting {name}")
+	paste_im(name, "empty", (x, y))
+	paste_im(name, "liquid_red", (x + 256, y))
+	text_im(name, (x + 512 + 10, y + 128))
+
+make_image("images/models.png",
+	items = models.values(),
+	header = "Models",
+	render = render_model,
+	text_width = 400,
+	col_width = 2 * 256,
+	cols = 4,
+)
+
+def render_variant(variant, x, y, paste_im, text_im):
+	name = variant["name"]
+	model = variant["model"]
+	print(f"pasting {name}")
+	paste_im(model, name, (x, y))
+	text_im(name, (x + 256 + 10, y + 128))
+
+make_image("images/variants.png",
+	items = models["sphere_hemi"]["variants"].values(),
+	header = "Variants",
+	render = render_variant,
+	text_width = 400,
+	col_width = 256,
+	cols = 2,
+)
+
+make_image("images/frozen.png",
+	items = list(v for v in models["cone_normal"]["variants"].values() if v["contents"] == "frozen"),
+	header = "Frozen Variants",
+	description = "Only the cone_normal model has frozen variants.",
+	render = render_variant,
+	text_width = 400,
+	col_width = 256,
+	cols = 2,
+)
+
+def render_design(variant, x, y, paste_im, text_im):
+	if not variant: return
+	name = variant["name"]
+	model = variant["model"]
+	print(f"pasting {name}")
+	paste_im(model, name, (x, y))
+
+all_designs = [v for m in models.values() for v in m["variants"].values()]
+all_designs.insert(12, None)
+
+make_image("images/all-designs.png",
+	items = all_designs,
+	header = "All Designs",
+	render = render_design,
+	text_width = 0,
+	col_width = 128,
+	cols = len(models) + 1,
+	scale = 0.5,
+)