[Feature Request]: support simple crop anchor

[bluelovers]

[Feature Request]: support simple crop anchor

[bluelovers]

something like this

code from Tabnine AI

def resize_image(resize_mode, im, width, height, upscaler_name=None, crop_anchor=(0.5, 0.5)):
    """
    Resizes an image with the specified resize_mode, width, height, and crop_anchor.

    Args:
        resize_mode: The mode to use when resizing the image.
            0: Resize the image to the specified width and height.
            1: Resize the image to fill the specified width and height, maintaining the aspect ratio, and then center the image within the dimensions, cropping the excess.
            2: Resize the image to fit within the specified width and height, maintaining the aspect ratio, and then center the image within the dimensions, filling empty with data from image.
        im: The image to resize.
        width: The width to resize the image to.
        height: The height to resize the image to.
        upscaler_name: The name of the upscaler to use. If not provided, defaults to opts.upscaler_for_img2img.
        crop_anchor: The point from which the image should be cropped. The values should be between 0 and 1, representing the x and y coordinates of the anchor point. The default value is (0.5, 0.5), which represents the center of the image.
    """

    #... (existing code)

    elif resize_mode == 1:
        ratio = width / height
        src_ratio = im.width / im.height

        src_w = width if ratio > src_ratio else im.width * height // im.height
        src_h = height if ratio <= src_ratio else im.height * width // im.width

        resized = resize(im, src_w, src_h)
        res = Image.new("RGB", (width, height))

        # Calculate the coordinates of the crop box based on the crop_anchor
        x_offset = int(crop_anchor[0] * (resized.width - src_w))
        y_offset = int(crop_anchor[1] * (resized.height - src_h))

        res.paste(resized, box=(width // 2 - src_w // 2 - x_offset, height // 2 - src_h // 2 - y_offset))

    #... (existing code)