Math question with A2Dv2

[MerkurAlex]

I am absolutely horrible at math(having a headache is not helping) so i have come here for a simple question.

I am using a2d to draw an image and based on the x and y of that image and the x and y of the mouse i need to rotate the image 1-360 degrees to point at the mouse.

[Authenticity]

I thought I might find sort of _GDIPlus_SetMapMode function but I don't see one heh. Anyway, I don't have a good start point for you on how to implement it in AutoIt nor do I good at math either, but the Gdi.dll got some nice functions like CombineTransform() or SetWorldTransform(). Search msdn about these functions.

Rotating HDC usually is implemented in one of some ways using the XFORM struct, just take the mouse coords and calculate the radians between the one of the axises and the mouse point using cos/sin, you might find better explanation than I give in MSDN and Wikipedia.

[jvanegmond]

If there's no inbuilt way to rotate the image, then you have to do it yourself. So, because of the lack of information in your post I am just going to make this vague and unclear.

Every point on a circle can be defined as: ( cos(x) * radius, sin(y) * radius )

[MerkurAlex]

The A2D udf has its own function to rotate my problem is finding out how to aim it at the mouse.

But i think i got it just let me test a few things.

Edited January 29, 2009 by MerkurAlex