/**
* Using this slot's camera, construct a pick ray for the specified screen coordinates.
*
* @param screenLocation screen coordinates (in pixels, measured from the lower left, not null,
* unaffected)
* @return new instance
*/
@Override
public Ray pickRay(Vector2f screenLocation) {
Validate.nonNull(screenLocation, "screen location");
Vector3f startLocation = cam.getWorldCoordinates(screenLocation, 0f);
Vector3f farPoint = cam.getWorldCoordinates(screenLocation, 1f);
Vector3f direction = farPoint.subtract(startLocation).normalizeLocal();
Ray result = new Ray(startLocation, direction);
return result;
}
/**
* Test whether the specified screen coordinates are inside this slot.
*
* @param screenLocation screen coordinates (in pixels, measured from the lower left, not null,
* unaffected)
* @return true if location is in this slot, otherwise false
*/
@Override
public boolean isInside(Vector2f screenLocation) {
Validate.nonNull(screenLocation, "screen location");
if (insetSlotState.isInside(screenLocation)) {
return false;
}
/*
* Scale coordinates to fractions of the viewport dimensions.
*/
float xFraction = screenLocation.x / cam.getWidth();
float yFraction = screenLocation.y / cam.getHeight();
if (xFraction > 0f && xFraction < 1f && yFraction > 0f && yFraction < 1f) {
return true;
}
return false;
}
/**
* Alter this slot's background color.
*
* @param newColor new color (not null)
*/
@Override
public void setBackgroundColor(ColorRGBA newColor) {
Validate.nonNull(newColor, "color");
viewPort.setBackgroundColor(newColor);
}