try Intersection Rectangle - Java java.lang

Java examples for java.lang:Math Geometry Shape

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Description

try Intersection Rectangle

Demo Code


import java.util.ArrayList;
import java.util.List;

public class Main{
    private static Rectangle tryIntersection(final Rectangle r1,
            final Rectangle r2) {

        final boolean bl = r2.isIn(r1.getBottomLeftPosition());
        final boolean br = r2.isIn(r1.getBottomRightPosition());
        final boolean tl = r2.isIn(r1.getTopLeftPosition());
        final boolean tr = r2.isIn(r1.getTopRightPosition());

        final boolean hasIntersection = bl || br || tl || tr;

        if (hasIntersection) {
            // all corners inside
            if (bl && br && tl && tr) {
                return new Rectangle(r1.corner1, r1.corner2);
            }/*  w  w w.  j  av  a2  s.c  o  m*/

            if (bl && br) {
                return new Rectangle(Position.at(
                        r1.getBottomLeftPosition().x,
                        r2.getTopLeftPosition().y),
                        r1.getBottomRightPosition());
            }

            if (tl && tr) {
                return new Rectangle(r1.getTopLeftPosition(), Position.at(
                        r1.getTopRightPosition().x,
                        r2.getBottomRightPosition().y));
            }

            if (tl && bl) {
                return new Rectangle(r1.getTopLeftPosition(), Position.at(
                        r2.getBottomRightPosition().x,
                        r1.getBottomRightPosition().y));
            }

            if (tr && br) {
                return new Rectangle(Position.at(r2.getTopLeftPosition().x,
                        r1.getTopLeftPosition().y),
                        r1.getBottomRightPosition());
            }

            if (br) {
                return new Rectangle(r2.getTopLeftPosition(),
                        r1.getBottomRightPosition());
            }

            if (tl) {
                return new Rectangle(r1.getTopLeftPosition(),
                        r2.getBottomRightPosition());
            }

            if (bl) {
                return new Rectangle(Position.at(r1.getTopLeftPosition().x,
                        r2.getTopLeftPosition().y), Position.at(
                        r2.getBottomRightPosition().x,
                        r1.getBottomRightPosition().y));
            }

            if (tr) {
                return new Rectangle(Position.at(r2.getTopLeftPosition().x,
                        r1.getTopLeftPosition().y), Position.at(
                        r1.getBottomRightPosition().x,
                        r2.getBottomRightPosition().y));
            }
        } else {
            if (r1.getTopLeftPosition().x >= r2.getTopLeftPosition().x
                    && r1.getTopLeftPosition().x <= r2
                            .getBottomRightPosition().x
                    && r2.getTopLeftPosition().y >= r1.getTopLeftPosition().y
                    && r2.getTopLeftPosition().y <= r1
                            .getBottomRightPosition().y) {
                return new Rectangle(Position.at(r1.getTopLeftPosition().x,
                        r2.getTopLeftPosition().y), Position.at(
                        r1.getBottomRightPosition().x,
                        r2.getBottomRightPosition().y));
            }
        }

        return null;

    }
}

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