Focus points
A focus point is an image鈥檚 ideal vertical and horizontal center after cropping. You can specify focus points using the following techniques:
- Using Brightspot鈥檚 image editor.
- Integrating the library.
- Integrating a cloud service such as .
If you know that an image鈥檚 subject is always centered in the middle (as in time-lapse photography), you can return that coordinate in a Focus object. This technique ensures Brightspot generates crops around the image鈥檚 native center.
import com.psddev.cms.image.Focus;
import com.psddev.cms.image.FocusCalculator;
import com.psddev.dari.util.ObjectUtils;
import com.psddev.dari.util.StorageItem;
public class CenterFocusCalculator implements FocusCalculator {
@Override
public Focus getFocus(StorageItem storageItem) {
Map<String, Object> metaData = storageItem.getMetadata();
double imageWidth = ObjectUtils.to(double.class, metaData.get("width"));
double imageHeight = ObjectUtils.to(double.class, metaData.get("height"));
Focus centerFocus = new Focus(imageWidth / 2, imageHeight / 2);
System.out.println("Focus, x-coordinate " + centerFocus.getX());
System.out.println("Focus, y-coordinate " + centerFocus.getY());
return centerFocus;
}
}-
Declares this view model implements the
FocusCalculatorinterface. -
Retrieves the image鈥檚 width and height from the metadata, divides each in half, and returns both values in a
Focusobject. -
Prints the focus point to the console.
Focus, x-coordinate 200.0
Focus, y-coordinate 131.0
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