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Use higher density for better quality #102

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Use higher density for better quality #102

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15 changes: 6 additions & 9 deletions mathbot/modules/latex/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,18 +115,16 @@ async def handle(self, message, source, *, is_inline, centre=True, wide=False, n
message,
latex,
colour_back,
oversampling=(1 if wide else 2)
)

async def render_and_reply(self, message, latex, colour_back, *, oversampling):
async def render_and_reply(self, message, latex, colour_back):
with MessageEditGuard(message, message.channel, self.bot) as guard:
async with message.channel.typing():
sent_message = None
try:
render_result = await generate_image_online(
latex,
colour_back,
oversampling=oversampling
)
except asyncio.TimeoutError:
sent_message = await guard.send(LATEX_TIMEOUT_MESSAGE)
Expand Down Expand Up @@ -169,12 +167,12 @@ async def get_colours(self, user):
return '36393F', 'f0f0f0'


async def generate_image_online(latex, colour_back, *, oversampling):
async def generate_image_online(latex, colour_back):
payload = {
'format': 'png',
'code': latex.strip(),
'density': 220 * oversampling,
'quality': 100
'density': 770,
'quality': 75
}
async with aiohttp.ClientSession() as session:
try:
Expand All @@ -196,13 +194,12 @@ async def generate_image_online(latex, colour_back, *, oversampling):
if image.width <= 2 or image.height <= 2:
print('Image is empty')
raise RenderingError(None)
border_size = 5 * oversampling
border_size = 5
colour_back = imageutil.hex_to_tuple(colour_back)
width, height = image.size
backing = imageutil.new_monocolour((width + border_size * 2, height + border_size * 2), colour_back)
backing = backing.resize((backing.width // 3, backing.height // 3), resample = PIL.Image.BICUBIC)
backing.paste(image, (border_size, border_size), image)
if oversampling != 1:
backing = backing.resize((backing.width // oversampling, backing.height // oversampling), resample = PIL.Image.BICUBIC)
fobj = io.BytesIO()
backing.save(fobj, format='PNG')
fobj = io.BytesIO(fobj.getvalue())
Expand Down