Method get_tooltip_position

src/pie.rs:523–538

(&self, tooltip_width: f64, tooltip_height: f64)

    }

    fn get_tooltip_position(&self, tooltip_width: f64, tooltip_height: f64) -> Point<f64> {
        let channels = self.base.channels.borrow();
        let channel = channels.first().unwrap();

        let focused_entity_index = self.base.props.borrow().focused_entity_index as usize;

        let props = self.props.borrow();

        let pie = channel.entities.get(focused_entity_index).unwrap();
        let angle = 0.5 * (pie.start_angle + pie.end_angle);
        let radius = 0.5 * (props.inner_radius + props.outer_radius);
        let point = utils::polar2cartesian(&props.center, radius, angle);
        let x = point.x - 0.5 * tooltip_width;
        let y = point.y - tooltip_height;
        Point::new(x, y)
    }
}