Image Rotation Issue

How-to
1

I have an image loaded via a C array on the TFT.

I have added a test function (Click Event Callback) to attempt to rotate the image 10 degrees every time the image is clicked. However, when I execute the function the image appears not to rotate, but get cropped to a thin vertical line.

Here is the code snippet I am using:

static void img1_event_cb(lv_obj_t * obj, lv_event_t event)
{
lv_img_set_angle(img1,100);
}

Thanks…

2

I’ve been away from using this library for a while, so I’m definitely rusty but I’ll give it a shot.

Have you set a pivot point in the middle of the image? See here.

3

Well, the documentation says the default is the center of the image, as one would expect.
I guess I could try to set it manually…

4

Setting the pivot point manually gives the same result.
So there must be something else not right…

Any suggestions?

5

I got it working… I had to re convert the image C array to TrueColor. I had it initially set to 256 color because my image is mostly B&W.