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engines/titanic/support/rect.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "titanic/support/rect.h"
+
+namespace Titanic {
+
+void Rect::combine(const Rect &r) {
+	if (isEmpty()) {
+		*this = r;
+	} else if (!r.isEmpty()) {
+		Common::Rect::extend(r);
+	}
+}
+
+void Rect::constrain(const Rect &r) {
+	if (!isEmpty()) {
+		if (r.isEmpty()) {
+			clear();
+		} else {
+			Common::Rect::clip(r);
+		}
+	}
+}
+
+Point Rect::getPoint(Quadrant quadrant) {
+	if (isEmpty())
+		return Point(left, top);
+
+	switch (quadrant) {
+	case Q_LEFT:
+		return Point(MIN(left + 10, (int)right), (top + bottom) / 2);
+	case Q_RIGHT:
+		return Point(MAX(right - 10, (int)left), (top + bottom) / 2);
+	case Q_TOP:
+		return Point((left + right) / 2, MIN(top + 10, (int)bottom));
+	case Q_BOTTOM:
+		return Point((left + right) / 2, MAX(bottom - 10, (int)top));
+	default:
+		return Point((left + right) / 2, (top + bottom) / 2);
+	}
+}
+
+} // End of namespace Titanic