fit Rectangle to another Rectangle - Java 2D Graphics

Java examples for 2D Graphics:Rectangle

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Description

fit Rectangle to another Rectangle

Demo Code


//package com.java2s;
import java.awt.*;

public class Main {
    public static Rectangle fit(Rectangle source, Rectangle target) {

        double heightScaleFactor = target.getHeight() / source.getHeight();
        double widthScaleFactor = target.getWidth() / source.getWidth();

        Rectangle scaledByWidth = scale(source, widthScaleFactor);
        Rectangle scaledByHeight = scale(source, heightScaleFactor);

        scaledByWidth = centerInRect(scaledByWidth, target);
        scaledByHeight = centerInRect(scaledByHeight, target);

        if (target.contains(new Rectangle(scaledByWidth.x + 1,
                scaledByWidth.y + 1, scaledByWidth.width - 2,
                scaledByWidth.height - 2))) {
            return scaledByWidth;
        } else {// ww  w  .  j a v  a  2s .c  o  m
            return scaledByHeight;
        }
    }

    public static Rectangle scale(Rectangle rect, double scaleFactor) {
        return new Rectangle(rect.x, rect.y,
                (int) (rect.getWidth() * scaleFactor),
                (int) (rect.getHeight() * scaleFactor));
    }

    public static Rectangle centerInRect(Rectangle source, Rectangle target) {
        int centerX = target.x + (int) (target.getWidth() / 2);
        int centerY = target.y + (int) (target.getHeight() / 2);
        return new Rectangle(centerX - (int) (source.getWidth() / 2),
                centerY - (int) (source.getHeight() / 2), source.width,
                source.height);
    }
}

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