image.rotate - Revision history

Adriweb: /* Example */

2012-06-06T20:30:08Z

Example

Adriweb: /* Example */

2012-06-06T20:24:29Z

Example

Adriweb: /* Example */

2012-06-06T20:19:14Z

Example

Adriweb at 20:17, 6 June 2012

2012-06-06T20:17:59Z

Adriweb at 20:17, 6 June 2012

2012-06-06T20:17:48Z

Adriweb: Created page with "NOTOC image.'''rotate''' is a function that is part of the image library. Returns a copy of the input image rotated counterclockwise by the amount of d..."

2012-06-06T20:17:37Z

Created page with "__NOTOC__ image.'''rotate''' is a function that is part of the image library. Returns a copy of the input image rotated counterclockwise by the amount of d..."

New page

__NOTOC__
image.'''rotate''' is a function that is part of the [[:Category: image|image]] library.

Returns a copy of the input image rotated counterclockwise by the amount of degrees given.

{{Since|3.2}}

== Syntax ==
image.'''rotate'''(yourImage, angle) ( ''or'' yourImage:rotate(angle) )

{| class="wikitable"
|-
! Parameter !! Type !! Description
|-
| <center>yourImage</center> || [[TI.Image]] || Image you want to rotate, created with [[image.new]]()
|-
| <center>angle</center> || number || the angle in degrees you want to rotate your image by.
|-
|}

== Example ==
<syntaxhighlight>local imw = earth:width()
local imh = earth:height()
local im = earth:copy(sc*imw, sc*imh)
im = im:rotate(-tilt)
local midx = im:width()/2 -- this is the important bit for having the right coordinates
local midy = im:height()/2
local x = w/4 - midx
local y = h/2 - midy
gc:drawImage(im, x, y) -- we must be in a gc-passed function (like [[on.paint]](gc))
imw, imh = im:width(), im:height()</syntaxhighlight>

== Good to know ==

The image changes size when you rotate it. So you need to figure where to draw it based on the middle of its rotated size. By experimenting with it, you'll quickly notice that need ;)

== See also ==
*[[image.new]]
*[[image.width]]
*[[image.height]]

 

[[Category:image]]

← Older revision		Revision as of 20:17, 6 June 2012
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−	Returns a copy of the input image rotated counterclockwise by the amount of degrees given.	+	Returns a copy of the input image rotated counterclockwise by the amount of degrees given.<br />
	<br />		<br />

← Older revision		Revision as of 20:17, 6 June 2012
Line 4:		Line 4:

	Returns a copy of the input image rotated counterclockwise by the amount of degrees given.		Returns a copy of the input image rotated counterclockwise by the amount of degrees given.
		+	<br />

	{{Since\|3.2}}		{{Since\|3.2}}

@@ Line 22: / Line 22: @@
 == Example  ==
-<syntaxhighlight>local imw = earth:width()
+<syntaxhighlight>local sc = 0.15
 local imh = earth:height()
 local im = earth:copy(sc*imw, sc*imh)

@@ Line 30: / Line 30: @@
 local x = w/4 - midx
 local y = h/2 - midy
-gc:drawImage(im, x, y) -- we must be in a gc-passed function (like [[on.paint]](gc))
+gc:drawImage(im, x, y) -- we must be in a gc-passed function (like on.paint(gc))
 imw, imh = im:width(), im:height()</syntaxhighlight>

image.rotate - Revision history

Adriweb: /* Example */

Adriweb: /* Example */

Adriweb: /* Example */

Adriweb at 20:17, 6 June 2012

Adriweb at 20:17, 6 June 2012

Adriweb: Created page with "__NOTOC__ image.'''rotate''' is a function that is part of the image library. Returns a copy of the input image rotated counterclockwise by the amount of d..."

Adriweb: Created page with "NOTOC image.'''rotate''' is a function that is part of the image library. Returns a copy of the input image rotated counterclockwise by the amount of d..."