The coordinates are the rotation's center point (called the pivot
point in the docs).
See here for an interactive demo:
http://www.nbilyk.com/pivot-rotate-example
If you set these coordinates to the center of the canvas, you'll get the
most intuitive result. But other rotations are possible as shown in the
link above.
-- Kostya
18.09.2010 13:37, jlopeznava...@gmail.com пишет:
Can anybody explain me what is exactly that coordinates? I have search
for information but can't find properly info.
I have some drawables objects wich I need to rotate, I have realized I
need to add a constant value to that coordinates, if not they rotate
wrong.
I use this way:
==========================================================================================
canvas.save();
canvas.rotate(90 * mRotatationType, CTE_ROTATING_X_POINT + coordX,
CTE_ROTATING_Y_POINT + coordY);
canvas.restore;
==========================================================================================
Where:
-mRotatationType: is set to 0, 1, 2, or 3 in order to get a 0, 90,
180, 270º rotation.
-coordX and coordY are the top/left points of my drawable object.
-CTE_ROTATING_X_POINT and CTE_ROTATING_Y_POINT are set to "48" (if not
the drawables move in a different place after rotate). This is the
mistery for me.
--
Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com
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