initial checkin of C++ port (in progress)

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@2 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/rotation.cpp

@@ -0,0 +1,56 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/rotation.hpp>
+
+// ----------------------------------------------------------------------------- : Rotation
+
+Rotation::Rotation(int angle, const RealRect& rect, double zoom)
+	: angle(angle)
+	, size(rect.size)
+	, origin(rect.position)
+	, zoom(zoom)
+{
+	// set origin
+	if (revX()) origin.x += size.width;
+	if (revY()) origin.x += size.height;
+}
+
+RealPoint Rotation::tr(const RealPoint& p) const {
+	return tr(RealSize(p.x, p.y)) + origin; // TODO : optimize?
+}
+RealSize Rotation::tr(const RealSize& s) const {
+	if (sideways()) {
+		return RealSize(negX(s.height), negY(s.width)) * zoom;
+	} else {
+		return RealSize(negX(s.width), negY(s.height)) * zoom;
+	}
+}
+RealRect Rotation::tr(const RealRect& r) const {
+	return RealRect(tr(r.position), tr(r.size));
+}
+
+RealSize Rotation::trNoNeg(const RealSize& s) const {
+	if (sideways()) {
+		return RealSize(s.height, s.width) * zoom;
+	} else {
+		return RealSize(s.width, s.height) * zoom;
+	}
+}
+RealRect Rotation::trNoNeg(const RealRect& r) const {
+	throw "TODO";
+}
+
+RealPoint Rotation::trInv(const RealPoint& p) const {
+	RealPoint p2 = (p - origin) / zoom;
+	if (sideways()) {
+		return RealPoint(negY(p2.y), negX(p2.x));
+	} else {
+		return RealPoint(negX(p2.x), negY(p2.y));
+	}
+}