CodeChickenCore/codechicken/lib/vec/Rectangle4i.java

package codechicken.lib.vec;

public class Rectangle4i
{
    public int x;
    public int y;
    public int w;
    public int h;
    
    public Rectangle4i()
    {
    }
    
    public Rectangle4i(int x, int y, int w, int h)
    {
        this.x = x;
        this.y = y;
        this.w = w;
        this.h = h;
    }

    public int x1() {
        return x;
    }

    public int y1() {
        return y;
    }

    public int x2() {
        return x+w-1;
    }

    public int y2() {
        return y+h-1;
    }
    
    public Rectangle4i offset(int dx, int dy)
    {
        x+=dx;
        y+=dy;
        return this;
    }

    @Deprecated
    public Rectangle4i with(int px, int py)
    {
        return include(px, py);
    }

    public Rectangle4i include(int px, int py) {
        if(px < x) expand(px-x, 0);
        if(px >= x+w) expand(px-x-w+1, 0);
        if(py < y) expand(0, py-y);
        if(py >= y+h) expand(0, py-y-h+1);
        return this;
    }

    public Rectangle4i include(Rectangle4i r) {
        include(r.x, r.y);
        return include(r.x2(), r.y2());
    }

    public Rectangle4i expand(int px, int py) {
        if(px > 0)
            w+=px;
        else {
            x+=px;
            w-=px;
        }
        if(py > 0)
            h+=py;
        else {
            y+=py;
            h-=py;
        }
        return this;
    }
    
    public boolean contains(int px, int py)
    {
        return x <= px && px < x+w && y <= py && py < y+h;
    }
    
    public boolean intersects(Rectangle4i r)
    {
        return r.x+r.w > x &&
                r.x < x+w &&
                r.y+r.h > y &&
                r.y < y+h;
    }

    public int area() {
        return w * h;
    }
}