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math/vector2d.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 "math/vector2d.h"
+
+#include "common/streamdebug.h"
+
+namespace Math {
+
+Vector2d::Matrix() :
+	MatrixType<2, 1>() {
+}
+
+Vector2d::Matrix(float x, float y) :
+	MatrixType<2, 1>() {
+	setValue(0, x);
+	setValue(1, y);
+}
+
+Vector2d::Matrix(const MatrixBase<2, 1> &vec) :
+	MatrixType<2, 1>(vec) {
+}
+
+Vector2d::Matrix(const float *data) :
+	MatrixType<2, 1>(data) {
+}
+
+void Vector2d::rotateAround(const Vector2d &point, const Angle &angle) {
+	*this -= point;
+	float cosa = angle.getCosine();
+	float sina = angle.getSine();
+
+	float x  = value(0) * cosa - value(1) * sina;
+	value(1) = value(0) * sina + value(1) * cosa;
+	value(0) = x;
+
+	*this += point;
+}
+
+Angle Vector2d::getAngle() const {
+	return Angle::arcTangent2(getY(), getX());
+}
+
+Vector3d Vector2d::toVector3d() const {
+	Vector3d v(value(0), value(1), 0);
+	return v;
+}
+
+}