Merge branch 'reorganisation' of github.com:FacialTurd/The-Powder-Toy

1 files changed, 56 insertions, 0 deletions

diff --git a/src/gui/game/EllipseBrush.h b/src/gui/game/EllipseBrush.h
new file mode 100644
index 0000000..ad28766
--- /dev/null
+++ b/src/gui/game/EllipseBrush.h
@@ -0,0 +1,56 @@
+#ifndef ELIPSEBRUSH_H_
+#define ELIPSEBRUSH_H_
+
+#include <cmath>
+#include "Brush.h"
+
+class EllipseBrush: public Brush
+{
+public:
+	EllipseBrush(ui::Point size_):
+		Brush(size_)
+	{
+		SetRadius(size_);
+	};
+	virtual void GenerateBitmap()
+	{
+		if(bitmap)
+			delete[] bitmap;
+		bitmap = new unsigned char[size.X*size.Y];
+		int rx = radius.X;
+		int ry = radius.Y;
+
+		if (!rx)
+		{
+			for (int j = 0; j <= 2*ry; j++)
+			{
+				bitmap[j*(size.X)+rx] = 255;
+			}
+		}
+		else
+		{
+			int yTop = ry, yBottom, i, j;
+			for (i = 0; i <= rx; i++)
+			{
+				while (pow(i-rx,2.0f)*pow(ry,2.0f) + pow(yTop-ry,2.0f)*pow(rx,2.0f) <= pow(rx,2.0f)*pow(ry,2.0f))
+					yTop++;
+				yBottom = 2*ry - yTop;
+				for (int j = 0; j <= ry*2; j++)
+				{
+					if (j > yBottom && j < yTop)
+					{
+						bitmap[j*(size.X)+i] = 255;
+						bitmap[j*(size.X)+2*rx-i] = 255;
+					}
+					else
+					{
+						bitmap[j*(size.X)+i] = 0;
+						bitmap[j*(size.X)+2*rx-i] = 0;
+					}
+				}
+			}
+		}
+	}
+};
+
+#endif /* ELIPSEBRUSH_H_ */