Scaling love.graphics geometric shapes like bitmap pics?

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veethree
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by veethree »

If the things you're trying to scale are static perhaps using love.graphics.newScreenshot could be an option. But you definitely don't want to be calling that every frame.
EDIT: On 2nd thought that's probably stupid.
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Lafolie
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Lafolie »

veethree wrote:If the things you're trying to scale are static perhaps using love.graphics.newScreenshot could be an option. But you definitely don't want to be calling that every frame.
EDIT: On 2nd thought that's probably stupid.
Thought of this too, but decided not to post it as it's pretty bad advice, haha. Theoretically though, it gets the job done!
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Daniel Eakins
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Daniel Eakins »

I guess I'll try to use pre-rendered images when possible, and ImageData otherwise. Thanks for the replies!
bizziboi
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by bizziboi »

Alternatively, make a sprite of a line and scale and rotate it to match desired begin and end position. To get similar pixelation for short and long lines you could make a long line sprite and only draw a part of it that is sized relative to the length of the desired line segment.
Hope you paid attention in trig :op

That gives no perf overhead but will pixelate (if set to point filtering that is)
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Daniel Eakins
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Daniel Eakins »

bizziboi wrote:Alternatively, make a sprite of a line and scale and rotate it to match desired begin and end position. To get similar pixelation for short and long lines you could make a long line sprite and only draw a part of it that is sized relative to the length of the desired line segment.
Hope you paid attention in trig :op

That gives no perf overhead but will pixelate (if set to point filtering that is)
With a pre-rendered image of a horizontal (or whatever) line? This doesn't work; love.graphics.rotate doesn't pixellate (result is similar to the white line in the first post).
Zeliarden
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Zeliarden »

Use a custom line function
here is an example using https://github.com/kikito/bresenham.lua
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Daniel Eakins
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Daniel Eakins »

Zeliarden wrote:Use a custom line function
here is an example using https://github.com/kikito/bresenham.lua
Wow, thanks! That's perfect. I'm really amazed by what LÖVE is capable of :awesome:
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Lafolie
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by Lafolie »

Daniel Eakins wrote: Wow, thanks! That's perfect. I'm really amazed by what kikito is capable of :awesome:
Fixed that for you ;)
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bizziboi
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by bizziboi »

With a pre-rendered image of a horizontal (or whatever) line? This doesn't work; love.graphics.rotate doesn't pixellate (result is similar to the white line in the first post).
You already have a solution, but I still think this would have worked - you'd use a lower res texture for the line image and scale it up with point filtering - that would have given you larger pixels.
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DaedalusYoung
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Re: Scaling love.graphics geometric shapes like bitmap pics?

Post by DaedalusYoung »

Yes, but you can't rotate that image, so you would either need Megabytes full of prerendered shapes, or generate the image on the fly.
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