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Your instructor will assign one or more of the following problems. Submit all appropriate files for grading, including code files, screen captures, supplemental files (e.g., image files), and text files. Group them all together in a directory called homework01 .

1. Create a new Processing program that displays two different images in some way.

2. Consider the following program, which animates a “shaking” circle:

   void setup() {
     size(300,300);
     frameRate(120);
   }
   
   void draw() {
     background(255);
     ellipse(width/2 + random(-3, 3), height/2 + random(-3, 3), 50, 50);
   }
   

   Modify this program to achieve the following goals:
   • change the background color to something other than white;
   • change the size of the circle;
   • slow the rate at which the circle shakes;
   • the circle shakes “more”, that is, it moves up or down more on each frame of the animation;

   Save this program in your homework01 folder under the sketch name ShakingCircle .

3. Consider the following program, which animates a changing triangle:

   void setup() {
     size(300,300);
     frameRate(120);
   }
   
   void draw() {
     background(255);
     triangle(width/4 + random(-3, 3), height/4 + random(-3, 3), 
       width/2 + random(-3, 3), height/2 + random(-3, 3),
         width*3/4 + random(-3, 3), height*3/4 + random(-3, 3) );
   }
   

   Notice that this animation is not very interesting, since it usually involves a very flat triangle. Modify this program to achieve the following goals:
   • change the background color to something other than white;
   • slow the rate at which the triangle changes;
   • make the triangle generally less flat (Hint: consider each pair of coordinates);
   • make the triangles more interesting; that is, make the three points that make up the triangle move more around the screen.

   Save this program in your homework01 folder under the sketch name ChangingTriangles .

4. Consider the following program, which animates a shaking quadrilateral:

   void setup() {
     size(300,300);
     frameRate(10);
   }
   
   void draw() {
     background(255);
      quad(width/2 + random(-20,20), 2.5*height/6 + random (-20,20), 
          5*width/6 + random(-20,20), height/2 + random (-20,20), 
          width/2 + random(-20,20), 3.5*height/6 + random(-20, 20), 
          height/6 + random(-20,20), height/2 +random(-20,20));
   }
   

   Modify this program to achieve the following goals:
   • change the background color to something other than white;
   • speed the rate at which the quadrilateral shakes;
   • make the quadrilateral generally taller than it is wide (Hint: consider each pair of coordinates);
   • make the quadrilateral shake less; that is, it moves up or down less on each frame of the animation;.

   Save this program in your homework01 folder under the sketch name Quadrilaterals .