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backends/vkeybd/polygon.h

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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/>.
+ *
+ */
+
+#ifndef COMMON_POLYGON_H
+#define COMMON_POLYGON_H
+
+#include "common/scummsys.h"
+
+#ifdef ENABLE_VKEYBD
+
+#include "common/array.h"
+#include "common/rect.h"
+
+namespace Common {
+
+struct Polygon {
+
+	Polygon() {}
+	Polygon(Array<Point> p) : _points(p) {
+		for (uint i = 0; i < p.size(); i++) {
+			_bound.extend(Rect(p[i].x, p[i].y, p[i].x, p[i].y));
+		}
+	}
+	Polygon(Point *p, int n) {
+		for (int i = 0; i < n; i++) {
+			addPoint(p[i]);
+		}
+	}
+
+	void addPoint(const Point &p) {
+		_points.push_back(p);
+		_bound.extend(Rect(p.x, p.y, p.x, p.y));
+	}
+
+	void addPoint(int16 x, int16 y) {
+		addPoint(Point(x, y));
+	}
+
+	uint getPointCount() {
+		return _points.size();
+	}
+
+	/**
+	 * Check if given position is inside this polygon.
+	 *
+	 * @param x the horizontal position to check
+	 * @param y the vertical position to check
+	 * @return true if the given position is inside this polygon, false otherwise
+	*/
+	bool contains(int16 x, int16 y) const;
+
+	/**
+	 * Check if given point is inside this polygon.
+	 *
+	 * @param p the point to check
+	 * @return true if the given point is inside this polygon, false otherwise
+	*/
+	bool contains(const Point &p) const {
+		return contains(p.x, p.y);
+	}
+
+	void moveTo(int16 x, int16 y) {
+		int16 dx = x - ((_bound.right + _bound.left) / 2);
+		int16 dy = y - ((_bound.bottom + _bound.top) / 2);
+		translate(dx, dy);
+	}
+
+	void moveTo(const Point &p) {
+		moveTo(p.x, p.y);
+	}
+
+	void translate(int16 dx, int16 dy) {
+		Array<Point>::iterator it;
+		for (it = _points.begin(); it != _points.end(); it++) {
+			it->x += dx;
+			it->y += dy;
+		}
+	}
+
+	Rect getBoundingRect() const {
+		return _bound;
+	}
+
+private:
+	Array<Point> _points;
+	Rect _bound;
+};
+
+} // End of namespace Common
+
+#endif // #ifdef ENABLE_VKEYBD
+
+#endif // #ifndef COMMON_POLYGON_H