Turning an image
Posted: Fri Apr 08, 2011 8:03 pm
Title says it all. How can i turn an image?
PS: I just realised this is the 666th thread
PS: I just realised this is the 666th thread
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Re: Turning an image
Posted: Fri Apr 08, 2011 8:46 pm
The fourth argument in love.graphics.draw is rotation, where the unit used is radians.
Re: Turning an image
Posted: Fri Apr 08, 2011 9:09 pm
In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.
Re: Turning an image
Posted: Sat Apr 09, 2011 9:16 am
You could also do this:Robin wrote:In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.
Code: Select all
math.tau = math.pi * 2
math.tau -- 360 deg
math.tau / 2 -- 180 deg
math.tau / 4 -- 90 degRe: Turning an image
Posted: Sat Apr 09, 2011 9:42 am
You could also do this:BlackBulletIV wrote:You could also do this:Robin wrote:In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.Much easier to remember for me. (By the way, I'm using Tau from here: http://tauday.com)Code: Select all
math.tau = math.pi * 2 math.tau -- 360 deg math.tau / 2 -- 180 deg math.tau / 4 -- 90 deg
Code: Select all
math.rad(90) -- 90 degRe: Turning an image
Posted: Sat Apr 09, 2011 12:52 pm
Oh thanks. Now just one thing yet, how can i toggle image visibility?
Re: Turning an image
Posted: Sat Apr 09, 2011 1:19 pm
Just don't draw it.
Re: Turning an image
Posted: Sat Apr 09, 2011 3:43 pm
But if it already is in the screen and i want to get rid of it?
Re: Turning an image
Posted: Sat Apr 09, 2011 4:14 pm
The screen is cleared and drawn each frame.Anxiety wrote:But if it already is in the screen and i want to get rid of it?
Re: Turning an image
Posted: Sat Apr 09, 2011 8:15 pm
Here's an example of how to toggle the image:
And in love.update you change the status of display to false on certain conditions, or something like that.
Code: Select all
display = true
function love.draw()
if display then
love.graphics.draw(...)
end
endI find Tau easier in some ways because if you replace the math.tau bit with 1, that's the fraction of the circle you get with the angle. But anyway, each to their own.nevon wrote:You could also do this:BlackBulletIV wrote:You could also do this:Robin wrote:In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.Much easier to remember for me. (By the way, I'm using Tau from here: http://tauday.com)Code: Select all
math.tau = math.pi * 2 math.tau -- 360 deg math.tau / 2 -- 180 deg math.tau / 4 -- 90 degMuch easier to remember for me. (Granted, your ways are much faster, but w/e)Code: Select all
math.rad(90) -- 90 deg