Turning an image

[Anxiety]

Title says it all. How can i turn an image?

PS: I just realised this is the 666th thread

[nevon]

The fourth argument in love.graphics.draw is rotation, where the unit used is radians.

[Robin]

In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.

[BlackBulletIV]

In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.

You could also do this:

Code: Select all

math.tau = math.pi * 2
math.tau -- 360 deg
math.tau / 2 -- 180 deg
math.tau / 4 -- 90 deg

Much easier to remember for me. (By the way, I'm using Tau from here: http://tauday.com)

[nevon]

In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.

You could also do this:

Code: Select all

math.tau = math.pi * 2
math.tau -- 360 deg
math.tau / 2 -- 180 deg
math.tau / 4 -- 90 deg

Much easier to remember for me. (By the way, I'm using Tau from here: http://tauday.com)

You could also do this:

Code: Select all

math.rad(90) -- 90 deg

Much easier to remember for me. (Granted, your ways are much faster, but w/e)

[Anxiety]

Oh thanks. Now just one thing yet, how can i toggle image visibility?

[thelinx]

Just don't draw it.

[Anxiety]

But if it already is in the screen and i want to get rid of it?

[nevon]

But if it already is in the screen and i want to get rid of it?

The screen is cleared and drawn each frame.

[BlackBulletIV]

Here's an example of how to toggle the image:

Code: Select all

display = true

function love.draw()
  if display then
      love.graphics.draw(...)
  end
end

And in love.update you change the status of display to false on certain conditions, or something like that.

In case you don't know how radians work: 0 = normal, math.pi/2 = 90°, math.pi = 180°, etc.

You could also do this:

Code: Select all

math.tau = math.pi * 2
math.tau -- 360 deg
math.tau / 2 -- 180 deg
math.tau / 4 -- 90 deg

Much easier to remember for me. (By the way, I'm using Tau from here: http://tauday.com)

You could also do this:

Code: Select all

math.rad(90) -- 90 deg

Much easier to remember for me. (Granted, your ways are much faster, but w/e)

I 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.