// DrawingWorld.java

import draw.Posn;
import draw.World;

import draw.Color;
import draw.Red;
import draw.White;
import draw.Green;
import draw.Blue;

/*
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;   ;    ; ;           ;          
;   ;    ; ;           ;          
;   ;   ;  ;    ;;;    ; ;;       
;   ;;;;   ;   ;   ;   ;;  ;      
;   ;   ;  ;  ;     ;  ;    ;     
;   ;    ; ;  ;     ;  ;    ;     
;   ;    ; ;  ;     ;  ;    ;     
;   ;    ; ;   ;   ;   ;;  ;      
;   ;;;;;  ;    ;;;    ; ;;       
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*/
// to represent a blob on the canvas
class Blob {
  Posn center;
  int radius;

  Blob(Posn center, int radius) {
    this.center = center;
    this.radius = radius;
  }

  // draw this blob in the given World
  boolean draw(World w) {
    return w.drawDisk(this.center, this.radius, new Red());
  } 

  // produce a blob with the center moved by the given distance;
  Blob move(int dx, int dy){
    return new Blob(new Posn(this.center.x + dx, 
                               this.center.y + dy),
                      this.radius);
  }

  // determine whether this blob is the same as than given blob
  boolean same(Blob b){
    return this.center.x == b.center.x
        && this.center.y == b.center.y
        && this.radius == b.radius;
  }
}

/*
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;   ;     ;     ;  ;;;    ; ;;  ;;    ; ;;    ;    ;;;    ;;;      
;   ;;;;;  ;   ;  ;   ;   ;;  ;;  ;   ;;  ;   ;   ;   ;  ;         
;   ;       ; ;       ;   ;   ;   ;   ;    ;  ;  ;    ;  ;;        
;   ;        ;     ;;;;   ;   ;   ;   ;    ;  ;  ;;;;;;   ;;       
;   ;       ; ;   ;   ;   ;   ;   ;   ;    ;  ;  ;          ;      
;   ;      ;   ;  ;   ;   ;   ;   ;   ;;  ;   ;   ;         ;      
;   ;;;;;;;     ;  ;;;;;  ;   ;   ;   ; ;;    ;    ;;;;  ;;;       
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*/
class Examples {
  Examples() {}

  // Examples of blobs: c1, c2, c3 ----------------------------------
  Blob b1 = new Blob(new Posn(100, 300), 30);  // center low
  Blob b2 = new Blob(new Posn(180, 20), 20);   // top right corner
  Blob b3 = new Blob(new Posn(40, 360), 40);   // bottom left corner

  // Testing the same method in the class Circle --------------------
  boolean testSame1 = b1.same(new Blob(new Posn(100, 300), 30));
  boolean testSame2 = b1.same(new Blob(new Posn(100, 300), 50)) == false;
  boolean testSame3 = b1.same(new Blob(new Posn(130, 300), 30)) == false;
  boolean testSame4 = b1.same(new Blob(new Posn(100, 140), 30)) == false;


  // Testing the move method in the class Circle -----------------
  Blob movedcircle = b1.move(50, 50);
  boolean testMove1 = this.movedcircle.same(
                           new Blob(new Posn(150, 350), 30));
  boolean testMove2 = this.b2.move(-20, 20).same(
                           new Blob(new Posn(160, 40), 20));


  // Building the drawing world ---------------------

  // make an example of a drawing world
  World dw = new World();

  // show the world as a canvas of the size 200, 400
  boolean testWorldStart = this.dw.start(200, 400);

  // Drawing the circles:" --------------------------------------
  // make a big blob and a small blob
  Blob bigBlob = new Blob(new Posn(100, 200), 50);
  Blob smallBlob = new Blob(new Posn(100, 100), 25);

  // draw the big blob and small blob in the given world
  boolean testBigBlobDraw = bigBlob.draw(this.dw);
  boolean testSmallBlobDraw = smallBlob.draw(this.dw);

  // Run:
  // > Examples e = new Examples();
  // > e
  // ---- draw a blob in the center: ------- >  e.b1.draw(e.dw)
  // ---- draw a blob in the top right: ---- >  e.b2.draw(e.dw)
  // ---- draw a blob in the bottom left: -- >  e.b3.draw(e.dw)

}