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Author Topic: Rotate with a set pivot point, and get rotation  (Read 535 times)

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joelcnz

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Rotate with a set pivot point, and get rotation
« on: February 02, 2016, 04:48:26 am »
SFML doesn't seem to have a pivot setting. I want to rotate a sprite from its centre.

Also, how do you do relative rotation on a sprite? Only one kind of rotation works - object.rotation(90);.
« Last Edit: February 02, 2016, 05:21:17 am by joelcnz »

Hapax

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Re: Rotate with a set pivot point, and get rotation
« Reply #1 on: February 02, 2016, 05:44:18 am »
SFML doesn't seem to have a pivot setting. I want to rotate a sprite from its centre.
It does:
http://www.sfml-dev.org/documentation/2.3.2/classsf_1_1Transformable.php#aa93a835ffbf3bee2098dfbbc695a7f05

Also, how do you do relative rotation on a sprite? Only one kind of rotation works - object.rotation(90);.
Relative rotations can be done with rotate()
(or setRotation() in conjunction with getRotation())

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joelcnz

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Re: Rotate with a set pivot point, and get rotation
« Reply #2 on: February 02, 2016, 06:35:55 am »
Thanks for the help with sprite origin for rotating.

These 2 below don't work for me (using D):
rotate(10);
sprite.setRotation(sprite.getRotation() + 90);

sprite.rotation(90); works instead of sprite.setRotation(90); for me.

Hapax

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Re: Rotate with a set pivot point, and get rotation
« Reply #3 on: February 03, 2016, 07:37:20 am »
Sorry. I didn't notice that this was posted in a D binding forum.

I didn't realise that the commands were that different:
http://jebbs.github.io/DSFML/dsfml/graphics/transformable.html

I'm not sure how to get the current rotation but it looks like it might be something like:
sprite.rotation(sprite.rotation() + 10);
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joelcnz

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Re: Rotate with a set pivot point, and get rotation
« Reply #4 on: February 08, 2016, 07:00:43 am »
Thanks Hapax.  :) I should've known the rotation thing.