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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Cairo;
using System.Diagnostics;
namespace Crow
{
public class Rectangles
{
public List<Rectangle> list = new List<Rectangle>();
public int count
{
get { return list.Count; }
}
public void AddRectangle(Rectangle r)
{
if (doesNotContain (r)) {
list.Add (r);
boundsUpToDate = false;
}
}
public void Reset()
{
list = new List<Rectangle>();
_bounds = Rectangle.Empty;
boundsUpToDate = true;
}
bool doesNotContain(Rectangle r)
{
foreach (Rectangle rInList in list)
if (rInList.ContainsOrIsEqual(r))
return false;
return true;
}
public bool intersect(Rectangle r)
{
foreach (Rectangle rInList in list)
if (rInList.Intersect(r))
return true;
return false;
}
public void stroke(Context ctx, Color c)
{
foreach (Rectangle r in list)
ctx.Rectangle(r);
ctx.SetSourceColor(c);
ctx.LineWidth = 2;
ctx.Stroke ();
}
public void clearAndClip(Context ctx)
{
if (list.Count == 0)
return;
foreach (Rectangle r in list)
ctx.Rectangle(r);
ctx.ClipPreserve();
ctx.Operator = Operator.Clear;
ctx.Fill();
ctx.Operator = Operator.Over;
}
public void clip(Context ctx)
{
foreach (Rectangle r in list)
ctx.Rectangle(r);
ctx.Clip();
}
Rectangle _bounds;
bool boundsUpToDate = true;
public Rectangle Bounds {
get {
if (!boundsUpToDate) {
if (list.Count > 0) {
_bounds = list [0];
for (int i = 1; i < list.Count; i++) {
_bounds += list [i];
}
} else
_bounds = Rectangle.Empty;
boundsUpToDate = true;
}
return _bounds;
}
}
public void clear(Context ctx)
{
foreach (Rectangle r in list)
ctx.Rectangle(r);
ctx.Operator = Operator.Clear;
ctx.Fill();
ctx.Operator = Operator.Over;
}
public override string ToString ()
{
string tmp = "";
foreach (Rectangle r in list) {
tmp += r.ToString ();
}
return tmp;
}
}
}
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