Function ExtractGeometry

processing/prepare.go:11–22

ExtractGeometry extracts image width, height, orientation angle and flip flag from the image metadata.

(img *vips.Image, baseAngle int, autoRotate bool)

// ExtractGeometry extracts image width, height, orientation angle and flip flag from the image metadata.
func ExtractGeometry(img *vips.Image, baseAngle int, autoRotate bool) (int, int, int, bool) {
	width := img.Width()
	height := img.Height()

	angle, flip := angleFlip(img, autoRotate)

	if (angle+baseAngle)%180 != 0 {
		width, height = height, width
	}

	return width, height, angle, flip
}

// angleFlip returns the orientation angle and flip flag based on the image metadata
// and po.AutoRotate flag.