curl -sl sh

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Dayna Wheeler
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4 4:1 type point = { x : int; y : int type rect = { rect_ll : point; rect_width : int; rect_height : int type circ = { circ_center : point; circ_radius : int type text = { text_ll : point; text_value : string

5 4:2 type point = { x : int; y : int type rect = { rect_ll : point; rect_width : int; rect_height : int type circ = { circ_center : point; circ_radius : int type text = { text_ll : point; text_value : string type display_elt = Rectangle of rect Circle of circ Text of text

6 4:3 type point = { x : int; y : int type rect = { rect_ll : point; rect_width : int; rect_height : int type circ = { circ_center : point; circ_radius : int type text = { text_ll : point; text_value : string type display_elt = Rectangle of rect Circle of circ Text of text type scene = display_elt list

7 5:1 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value

8 5:2 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value

9 5:3 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value

10 5:4 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value

11 5:5 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value

12 5:6 let draw (elt : display_elt) : unit = match elt with Rectangle r -> fill_rect r.rect_ll.x r.rect_ll.y r.rect_width r.rect_height Circle c -> fill_circle c.circ_center.x c.circ_center.y c.circ_radius Text t -> moveto t.text_ll.x t.text_ll.y; draw_string t.text_value let draw_scene : scene -> unit = List.iter ~f:draw

14 7:1 type display_elt = { draw : unit -> unit

15 7:2 type display_elt = { draw : unit -> unit let rect (ll : point) (width : int) (height : int) : display_elt = { draw = fun () -> fill_rect ll.x ll.y width height

16 7:3 type display_elt = { draw : unit -> unit let rect (ll : point) (width : int) (height : int) : display_elt = { draw = fun () -> fill_rect ll.x ll.y width height let circ (center : point) (radius : int) : display_elt = { draw = fun () -> fill_circle center.x center.y radius

17 7:4 type display_elt = { draw : unit -> unit let rect (ll : point) (width : int) (height : int) : display_elt = { draw = fun () -> fill_rect ll.x ll.y width height let circ (center : point) (radius : int) : display_elt = { draw = fun () -> fill_circle center.x center.y radius let text (ll : point) (value : string) : display_elt = { draw = fun () -> moveto ll.x ll.y; draw_string value

18 7:5 type display_elt = { draw : unit -> unit let rect (ll : point) (width : int) (height : int) : display_elt = { draw = fun () -> fill_rect ll.x ll.y width height let circ (center : point) (radius : int) : display_elt = { draw = fun () -> fill_circle center.x center.y radius let text (ll : point) (value : string) : display_elt = { draw = fun () -> moveto ll.x ll.y; draw_string value type scene = display_elt list

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26 11:1 rect circ

27 11:2 rect circ

28 11:3 rect circ

29 11:4 rect circ

30 12:1 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end

31 12:2 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

32 12:3 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

33 12:4 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

34 12:5 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

35 12:6 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

36 12:7 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class rect (ll : point) (width : int) (height : int) : display_elt = object val mutable ll = ll val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_rect ll.x ll.y width height method translate ~dx ~dy = ll <- translate_point ll ~dx ~dy end

37 13:1 class type display_elt = object method draw : unit method get_color : color method set_color : color -> unit method translate : dx:int -> dy:int -> unit end class circ (center : point) (radius : int) : display_elt = object val mutable center = center val mutable color = black method get_color = color method set_color c = color <- c method draw = set_color color; fill_circle center.x center.y radius method translate ~dx ~dy = center <- translate_point center ~dx ~dy end

39 15:1 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy);

40 15:2 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public class Shape { protected Point pos; protected Color color; public Shape(Point p) { pos = p; public Color getcolor() { return color; public void setcolor(color c) { color = c; public void translate(int dx, int dy) { pos = pos.translate(dx, dy)

41 15:3 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public class Shape { protected Point pos; protected Color color; public Shape(Point p) { pos = p; public Color getcolor() { return color; public void setcolor(color c) { color = c; public void translate(int dx, int dy) { pos = pos.translate(dx, dy)

42 15:4 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public class Shape { protected Point pos; protected Color color; public Shape(Point p) { pos = p; public Color getcolor() { return color; public void setcolor(color c) { color = c; public void translate(int dx, int dy) { pos = pos.translate(dx, dy)

43 15:5 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public class Shape { protected Point pos; protected Color color; public Shape(Point p) { pos = p; public Color getcolor() { return color; public void setcolor(color c) { color = c; public void translate(int dx, int dy) { pos = pos.translate(dx, dy)

44 16:1 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy);

45 16:2 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

46 16:3 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

47 16:4 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

48 16:5 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

49 16:6 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

50 16:7 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

51 16:8 public interface DisplayElt { void draw(); Color getcolor(); void setcolor(color c); void translate(int dx, int dy); public static class Rect extends Shape private final int width, height; public Rect(Point ll, int w, int h) { super(ll); width = w; height = h; implements DisplayElt{ public void draw() { gc.setcolor(color); gc.fillrect(pos.x, pos.y, width, height);

(* See *) open Graphics

(* See *) open Graphics 03-27-planned.ml Thu Mar 27 12:50:26 2014 1 (* Lecture 15: Putting the "O" in OCaml *) (* If you re using the CS50 appliance with our standard OCaml installation, you can install the graphics library used