Rotating an image in-place

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Bannana97
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Posts: 77
Joined: Wed May 16, 2012 2:49 pm

Rotating an image in-place

Post by Bannana97 »

I am not the best with math yet... and feel like I am cluttering the forums with posts now, lol. But I am having a problem and have tried a lot to fix it:
Issue.png
Issue.png (16.92 KiB) Viewed 984 times
Issue2.png
Issue2.png (10.55 KiB) Viewed 984 times
See the red box, between the terrain? That's where the character should also be. When the rectangle is up-right, it seems to correctly place the user's avatar.
However, it's when the rectangle isn't up-right / angled / that I have the problem. Here's the source.

Code: Select all

love.graphics.draw(uiImageFile, object.Body:getX()-math.ceil(part.Size.x / 2), object.Body:getY()-math.ceil(part.Size.y / 2), [b]math.pi * object.Body:getAngle()[/b])
I've tried a lot of different things, for example math.deg(body:getAngle()) and the such, but no luck. I want the avatar to remain in the box at all times, so what functions can I use? Thanks!
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Robin
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Re: Rotating an image in-place

Post by Robin »

Have you tried not multiplying object.Body:getAngle() by anything?
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Bannana97
Citizen
Posts: 77
Joined: Wed May 16, 2012 2:49 pm

Re: Rotating an image in-place

Post by Bannana97 »

Indeed, the image rotates around the box still. I want the avatar to remain upright in the box at all times. :ultrashocked:
Automatik
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Posts: 57
Joined: Sun Feb 17, 2013 7:05 pm

Re: Rotating an image in-place

Post by Automatik »

Use the origin parameters:

Code: Select all

love.graphics.draw(
    uiImageFile,
    object.Body:getX(),
    object.Body:getY(), 
    object.Body:getAngle(),
    math.ceil(part.Size.x / 2),
    math.ceil(part.Size.y / 2)
)
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