55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
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"""render_ascii.py — render ASCII 32-126 from Consolas TTF to grayscale bitmaps
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Output: CODE/firstInit/ascii_bitmaps.c (included by main.c)
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Glyph cell: 11x18. Consolas 18px has advance=10, ascender top ~3, descender ~18.
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ASCII_STEP=11 gives 1px spacing between glyphs (10px glyph + 1px gap).
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"""
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from PIL import Image, ImageFont, ImageDraw
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ttf = r"C:\Windows\Fonts\consola.ttf"
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GLYPH_W = 11
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GLYPH_H = 18
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FONT_SIZE = 18
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font = ImageFont.truetype(ttf, FONT_SIZE)
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# Verify metrics on first glyph
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probe = font.getbbox("A")
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print(f"Consolas {FONT_SIZE}px — 'A' bbox={probe}, advance={font.getlength('A')}")
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lines = []
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lines.append("/* Auto-generated by render_ascii.py - Consolas 18px grayscale */")
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lines.append("/* 95 glyphs: ASCII 32 (space) .. 126 (~), cell 11x18 */")
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lines.append("/* Do not edit - regenerate via: py render_ascii.py */")
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lines.append("")
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lines.append(f"static const int g_ascii_w = {GLYPH_W};")
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lines.append(f"static const int g_ascii_h = {GLYPH_H};")
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lines.append(f"static const unsigned char g_ascii[95][{GLYPH_W}*{GLYPH_H}] = {{")
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for cp in range(32, 127):
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ch = chr(cp)
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img = Image.new("L", (GLYPH_W, GLYPH_H), 0)
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draw = ImageDraw.Draw(img)
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draw.text((0, 0), ch, font=font, fill=255)
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pixels = list(img.tobytes())
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if ch.isalnum():
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comment = ch
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elif ch == ' ':
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comment = "space"
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else:
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comment = f"0x{cp:02x}"
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lines.append(f" /* '{comment}' */ {{")
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for y_row in range(GLYPH_H):
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row = ", ".join(str(pixels[y_row * GLYPH_W + x_col]) for x_col in range(GLYPH_W))
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lines.append(f" {row},")
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lines.append(" },")
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lines.append("};")
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lines.append("")
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out_path = "CODE/firstInit/ascii_bitmaps.c"
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with open(out_path, "w", encoding="ascii") as f:
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f.write("\n".join(lines))
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print(f"Generated {out_path} ({95*GLYPH_W*GLYPH_H} bytes of glyph data)")
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