Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.

1 files changed, 199 insertions, 0 deletions

diff --git a/src/vector.h b/src/vector.h
new file mode 100644
index 000000000..163dcdbda
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+++ b/src/vector.h
@@ -0,0 +1,199 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2007-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  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 2 of the License, or
+ *  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 VECTOR_H
+#define VECTOR_H
+
+#include <math.h>
+
+#include <iostream>
+
+/**
+ * Vector class. Represents either a 3D point in space, a velocity or a force.
+ * Provides several convenient operator overloads.
+ */
+class Vector
+{
+    public:
+        /**
+         * Constructor.
+         */
+        Vector():
+            x(0.0f),
+            y(0.0f),
+            z(0.0f)
+        {}
+
+        /**
+         * Constructor.
+         */
+        Vector(float x, float y, float z = 0.0f):
+            x(x),
+            y(y),
+            z(z)
+        {}
+
+        /**
+         * Copy constructor.
+         */
+        Vector(const Vector &v):
+            x(v.x),
+            y(v.y),
+            z(v.z)
+        {}
+
+        /**
+         * Returns true if all coordinates are set to 0, otherwise returns
+         * false.
+         */
+        bool isNull() const
+        {
+            return x == 0.0f && y == 0.0f && z == 0.0f;
+        }
+
+        /**
+         * Scale vector operator.
+         */
+        Vector operator*(float c) const
+        {
+            return Vector(x * c,
+                          y * c,
+                          z * c);
+        }
+
+        /**
+         * In-place scale vector operator.
+         */
+        Vector &operator*=(float c)
+        {
+            x *= c;
+            y *= c;
+            z *= c;
+            return *this;
+        }
+
+        /**
+         * Scale vector operator.
+         */
+        Vector operator/(float c) const
+        {
+            return Vector(x / c,
+                          y / c,
+                          z / c);
+        }
+
+        /**
+         * In-place scale vector operator.
+         */
+        Vector &operator/=(float c)
+        {
+            x /= c;
+            y /= c;
+            z /= c;
+            return *this;
+        }
+
+        /**
+         * Add vector operator.
+         */
+        Vector operator+(const Vector &v) const
+        {
+            return Vector(x + v.x,
+                          y + v.y,
+                          z + v.z);
+        }
+
+        /**
+         * In-place add vector operator.
+         */
+        Vector &operator+=(const Vector &v)
+        {
+            x += v.x;
+            y += v.y;
+            z += v.z;
+            return *this;
+        }
+
+        /**
+         * Subtract vector operator.
+         */
+        Vector operator-(const Vector &v) const
+        {
+            return Vector(x - v.x,
+                          y - v.y,
+                          z - v.z);
+        }
+
+        /**
+         * In-place subtract vector operator.
+         */
+        Vector &operator-=(const Vector &v)
+        {
+            x -= v.x;
+            y -= v.y;
+            z -= v.z;
+            return *this;
+        }
+
+        /**
+         * Returns the length of this vector. This method does a relatively
+         * slow square root.
+         */
+        float length() const
+        {
+            return sqrtf(x * x + y * y + z * z);
+        }
+
+        /**
+         * Returns the squared length of this vector. Avoids the square root.
+         */
+        float squaredLength() const
+        {
+            return x * x + y * y + z * z;
+        }
+
+        /**
+         * Returns the manhattan length of this vector.
+         */
+        float manhattanLength() const
+        {
+            return fabsf(x) + fabsf(y) + fabsf(z);
+        }
+
+        /**
+         * Returns a normalized version of this vector. This is a unit vector
+         * running parallel to it.
+         */
+        Vector normalized() const
+        {
+            const float l = length();
+            return Vector(x / l, y / l, z / l);
+        }
+
+        float x, y, z;
+};
+
+/**
+ * Appends a string representation of a vector to the output stream.
+ */
+std::ostream& operator <<(std::ostream &os, const Vector &v);
+
+#endif // VECTOR_H