==============================   EXERCISE: reduce an image

> Picture p = new Picture( "/Users/wallingf/Desktop/wallingf-umpr2006.jpg" );
> p.show();
> p.getWidth()
2000
> p.getHeight()
2625


* how can we reduce the image?
* write a method to do it...


> Picture q = p.reduce();
> q.getWidth()
1000
> q.getHeight()
1312
> q.show();


* still too large, so...




> Picture r = q.reduce();
> r.getWidth()
500
> r.getHeight()
656
> r.show();
> Picture s = r.reduce();
> s
Picture, filename null height 328 width 250
> s.show();
> r.write( "/Users/wallingf/Desktop/wallingf-500x656.jpg" );
> s.write( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );


* q - 1/4, r - 1/16, s - 1/64!
* look at the image sizes...


==============================   SLIDES: Media Operations, Nested Loops








==============================   EXERCISE: copy a triangle

> Picture p = new Picture( "/Users/wallingf/Desktop/sundial.jpg" );
> p.explore();
> Picture q = p.copyRightTriangle( 70, 10, 185 );
> q.show();


* design step by step: rows of pixels
* design questions: where to increment lineLength?
* alternate design: assume a method!  simplifies your code...


==============================   SLIDES: Generalizing on Regions













==============================   HOMEWORK 1: demo fun drawBorder() methods

> Picture p = new Picture( "/Users/wallingf/Desktop/mountain.jpg" );
> p.drawPictureFrame();

> Picture p = new Picture( "/Users/wallingf/Desktop/mountain.jpg" );
> p.border( 20 );
> p.show();
> p.fancyBorder( 20 );
> p.repaint();

> Picture p = new Picture( "/Users/wallingf/Desktop/mountain.jpg" );
> p.drawBorder();
> p.show();













==============================   HOMEWORK 2: demo the images; discuss

> Picture mainImage=new Picture("/Users/wallingf/Desktop/wallingf-500x656.jpg");
> mainImage.show();
> Picture imageToEmbed = new Picture( "/Users/wallingf/Desktop/insano.jpg" );
> imageToEmbed.show();
> imageToEmbed
Picture, filename /Users/wallingf/Desktop/insano.jpg height 231 width 239
> mainImage.embedImage( imageToEmbed, 5, 5, 220 );
> mainImage.repaint();


* what are the high-level operations?
* design: create empty methods, and design the operations one at a time