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vector2d.cpp

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00001 /* ResidualVM - A 3D game interpreter
00002  *
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00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
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00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
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00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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00022 
00023 #include "math/vector2d.h"
00024 #include "common/streamdebug.h"
00025 
00026 namespace Math {
00027 
00028 Vector2d::Matrix() :
00029     MatrixType<2, 1>() {
00030 
00031 }
00032 
00033 Vector2d::Matrix(float x, float y) :
00034     MatrixType<2, 1>() {
00035     setValue(0, x);
00036     setValue(1, y);
00037 }
00038 
00039 Vector2d::Matrix(const MatrixBase<2, 1> &vec) :
00040     MatrixType<2, 1>(vec) {
00041 
00042 }
00043 
00044 Vector2d::Matrix(const float *data) :
00045     MatrixType<2, 1>(data) {
00046 }
00047 
00048 void Vector2d::rotateAround(const Vector2d &point, const Angle &angle) {
00049     *this -= point;
00050     float cosa = angle.getCosine();
00051     float sina = angle.getSine();;
00052 
00053     float x  = value(0) * cosa - value(1) * sina;
00054     value(1) = value(0) * sina + value(1) * cosa;
00055     value(0) = x;
00056 
00057     *this += point;
00058 }
00059 
00060 Angle Vector2d::getAngle() const {
00061     return Angle::arcTangent2(getY(), getX());
00062 }
00063 
00064 Vector3d Vector2d::toVector3d() const {
00065     Vector3d v(value(0), value(1), 0);
00066     return v;
00067 }
00068 
00069 }


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