diff options
Diffstat (limited to 'src/Math')
| -rw-r--r-- | src/Math/Makefile.am | 3 | ||||
| -rw-r--r-- | src/Math/Makefile.in | 442 | ||||
| -rw-r--r-- | src/Math/Triangle2D.cpp | 47 | ||||
| -rw-r--r-- | src/Math/Triangle2D.h | 61 | ||||
| -rw-r--r-- | src/Math/Vector2D.cpp | 83 | ||||
| -rw-r--r-- | src/Math/Vector2D.h | 66 | ||||
| -rw-r--r-- | src/Math/Vertex2D.cpp | 61 | ||||
| -rw-r--r-- | src/Math/Vertex2D.h | 57 |
8 files changed, 820 insertions, 0 deletions
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install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/Math/Triangle2D.cpp b/src/Math/Triangle2D.cpp new file mode 100644 index 0000000..035ecb3 --- /dev/null +++ b/src/Math/Triangle2D.cpp @@ -0,0 +1,47 @@ +/* + * Triangle2D.cpp + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 "Triangle2D.h" +#include <cmath> + +namespace ZoomEdit { +namespace Math { + +float Triangle2D::area() const { + return std::fabs((vertices[0].getY() + vertices[1].getY())*(vertices[0].getX()-vertices[1].getX()) + + (vertices[1].getY() + vertices[2].getY())*(vertices[1].getX()-vertices[2].getX()) + + (vertices[2].getY() + vertices[0].getY())*(vertices[2].getX()-vertices[0].getX()))/2; +} + +bool Triangle2D::contains(const Vertex2D &v) const { + for(int i = 0; i < 3; ++i) { + Vector2D v1 = vertices[(i+2)%3] - vertices[(i+1)%3]; + Vector2D v2 = vertices[i] - vertices[(i+1)%3]; + + Vector2D vp = v - vertices[(i+1)%3]; + + if((v1.getX()*vp.getY()-vp.getX()*v1.getY())*(v1.getX()*v2.getY()-v2.getX()*v1.getY()) < 0) + return false; + } + + return true; +} + +} +} diff --git a/src/Math/Triangle2D.h b/src/Math/Triangle2D.h new file mode 100644 index 0000000..f8f02dd --- /dev/null +++ b/src/Math/Triangle2D.h @@ -0,0 +1,61 @@ +/* + * Triangle2D.h + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 ZOOMEDIT_MATH_TRIANGLE2D_H_ +#define ZOOMEDIT_MATH_TRIANGLE2D_H_ + +#include "Vertex2D.h" + +namespace ZoomEdit { +namespace Math { + +class Triangle2D { + private: + Vertex2D vertices[3]; + + public: + Triangle2D() {} + + Triangle2D(const Vertex2D &v1, const Vertex2D &v2, const Vertex2D &v3) { + vertices[0] = v1; + vertices[1] = v2; + vertices[2] = v3; + } + + Triangle2D(const Vertex2D *v) { + setVertices(v); + } + + const Vertex2D& getVertex(unsigned int i) const {return vertices[i];} + void setVertex(unsigned int i, const Vertex2D &v) {vertices[i] = v;} + + void setVertices(const Vertex2D *v) { + for(int i = 0; i < 3; ++i) + setVertex(i, v[i]); + } + + float area() const; + + bool contains(const Vertex2D &v) const; +}; + +} +} + +#endif /*ZOOMEDIT_MATH_TRIANGLE2D_H_*/ diff --git a/src/Math/Vector2D.cpp b/src/Math/Vector2D.cpp new file mode 100644 index 0000000..78f536b --- /dev/null +++ b/src/Math/Vector2D.cpp @@ -0,0 +1,83 @@ +/* + * Vector2D.cpp + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 "Vector2D.h" +#include <cmath> + +namespace ZoomEdit { +namespace Math { + +float Vector2D::lengthSq() const { + return x*x + y*y; +} + +float Vector2D::length() const { + return std::sqrt(lengthSq()); +} + +Vector2D Vector2D::operator+(const Vector2D &v) const { + return Vector2D(x + v.x, y + v.y); +} + +Vector2D Vector2D::operator-(const Vector2D &v) const { + return Vector2D(x - v.x, y - v.y); +} + +float Vector2D::operator*(const Vector2D &v) const { + return (x*v.x + y*v.y); +} + +Vector2D Vector2D::operator*(float f) const { + return Vector2D(x*f, y*f); +} + +Vector2D Vector2D::operator/(float f) const { + return Vector2D(x/f, y/f); +} + +Vector2D& Vector2D::operator+=(const Vector2D &v) { + x += v.x; + y += v.y; + + return *this; +} + +Vector2D& Vector2D::operator-=(const Vector2D &v) { + x -= v.x; + y -= v.y; + + return *this; +} + +Vector2D& Vector2D::operator*=(float f) { + x *= f; + y *= f; + + return *this; +} + +Vector2D& Vector2D::operator/=(float f) { + x /= f; + y /= f; + + return *this; +} + +} +} diff --git a/src/Math/Vector2D.h b/src/Math/Vector2D.h new file mode 100644 index 0000000..e95e502 --- /dev/null +++ b/src/Math/Vector2D.h @@ -0,0 +1,66 @@ +/* + * Vector2D.h + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 ZOOMEDIT_MATH_VECTOR2D_H_ +#define ZOOMEDIT_MATH_VECTOR2D_H_ + +namespace ZoomEdit { +namespace Math { + +class Vector2D { + private: + float x, y; + + public: + Vector2D() : x(0), y(0) {} + Vector2D(float x0, float y0) : x(x0), y(y0) {} + + float getX() const {return x;} + void setX(float x0) {x = x0;} + + float getY() const {return y;} + void setY(float y0) {y = y0;} + + float lengthSq() const; + float length() const; + + void normalize() { + if(lengthSq()) + *this /= length(); + } + + Vector2D operator+(const Vector2D &v) const; + Vector2D operator-(const Vector2D &v) const; + float operator*(const Vector2D &v) const; + + Vector2D operator*(float f) const; + Vector2D operator/(float f) const; + + Vector2D& operator+=(const Vector2D &v); + Vector2D& operator-=(const Vector2D &v); + + Vector2D& operator*=(float f); + Vector2D& operator/=(float f); +}; + +} + +} + +#endif /*ZOOMEDIT_MATH_VECTOR2D_H_*/ diff --git a/src/Math/Vertex2D.cpp b/src/Math/Vertex2D.cpp new file mode 100644 index 0000000..d64317a --- /dev/null +++ b/src/Math/Vertex2D.cpp @@ -0,0 +1,61 @@ +/* + * Vertex2D.cpp + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 "Vertex2D.h" +#include <cmath> + +namespace ZoomEdit { +namespace Math { + +float Vertex2D::distanceSq(const Vertex2D &v) const { + return (x - v.x)*(x - v.x) + (y - v.y)*(y - v.y); +} + +float Vertex2D::distance(const Vertex2D &v) const { + return std::sqrt(distanceSq(v)); +} + +Vector2D Vertex2D::operator-(const Vertex2D &v) const { + return Vector2D(x - v.x, y - v.y); +} + +Vertex2D Vertex2D::operator+(const Vector2D &v) const { + return Vertex2D(x + v.getX(), y + v.getY()); +} + +Vertex2D Vertex2D::operator-(const Vector2D &v) const { + return Vertex2D(x - v.getX(), y - v.getY()); +} + +Vertex2D& Vertex2D::operator+=(const Vector2D &v) { + x += v.getX(); + y += v.getY(); + + return *this; +} + +Vertex2D& Vertex2D::operator-=(const Vector2D &v) { + x -= v.getX(); + y -= v.getY(); + + return *this; +} + +} +} diff --git a/src/Math/Vertex2D.h b/src/Math/Vertex2D.h new file mode 100644 index 0000000..db6daba --- /dev/null +++ b/src/Math/Vertex2D.h @@ -0,0 +1,57 @@ +/* + * Vertex2D.h + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 ZOOMEDIT_MATH_VERTEX2D_H_ +#define ZOOMEDIT_MATH_VERTEX2D_H_ + +#include "Vector2D.h" + +namespace ZoomEdit { +namespace Math { + +class Vertex2D { + private: + float x, y; + + public: + Vertex2D() : x(0), y(0) {} + Vertex2D(float x0, float y0) : x(x0), y(y0) {} + + float getX() const {return x;} + void setX(float x0) {x = x0;} + + float getY() const {return y;} + void setY(float y0) {y = y0;} + + float distanceSq(const Vertex2D &v) const; + float distance(const Vertex2D &v) const; + + Vector2D operator-(const Vertex2D &v) const; + + Vertex2D operator+(const Vector2D &v) const; + Vertex2D operator-(const Vector2D &v) const; + + Vertex2D& operator+=(const Vector2D &v); + Vertex2D& operator-=(const Vector2D &v); +}; + +} +} + +#endif /*ZOOMEDIT_MATH_VERTEX2D_H_*/ |