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engine/3d/src/Vector3int32.hpp

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+/**
+  @file Vector3int32.h
+
+  @maintainer Morgan McGuire, matrix@brown.edu
+
+  @created 2008-07-01
+  @edited  2008-07-01
+  Copyright 2000-2009, Morgan McGuire.
+  All rights reserved.
+ */
+
+#ifndef VECTOR3INT32_H
+#define VECTOR3INT32_H
+
+#include "platform.hpp"
+#include "g3dmath.hpp"
+#include "HashTrait.hpp"
+
+namespace G3D
+{
+
+/**
+ \ Vector3int32
+ A Vector3 that packs its fields into uint32s.
+ */
+G3D_BEGIN_PACKED_CLASS(4)
+class Vector3int32
+{
+private:
+    // Hidden operators
+    bool operator<(const Vector3int32&) const;
+    bool operator>(const Vector3int32&) const;
+    bool operator<=(const Vector3int32&) const;
+    bool operator>=(const Vector3int32&) const;
+
+public:
+    G3D::int32 x;
+    G3D::int32 y;
+    G3D::int32 z;
+
+    Vector3int32()
+        : x(0)
+        , y(0)
+        , z(0)
+    {
+    }
+    Vector3int32(int _x, int _y, int _z)
+        : x(_x)
+        , y(_y)
+        , z(_z)
+    {
+    }
+    Vector3int32(const class Vector3int16& v);
+    Vector3int32(const class Vector3& v);
+
+    inline G3D::int32& operator[](int i)
+    {
+        debugAssert(i <= 2);
+        return ((G3D::int32*)this)[i];
+    }
+
+    inline const G3D::int32& operator[](int i) const
+    {
+        debugAssert(i <= 2);
+        return ((G3D::int32*)this)[i];
+    }
+
+    inline Vector3int32 operator+(const Vector3int32& other) const
+    {
+        return Vector3int32(x + other.x, y + other.y, z + other.z);
+    }
+
+    inline Vector3int32 operator-(const Vector3int32& other) const
+    {
+        return Vector3int32(x - other.x, y - other.y, z - other.z);
+    }
+
+    inline Vector3int32 operator*(const Vector3int32& other) const
+    {
+        return Vector3int32(x * other.x, y * other.y, z * other.z);
+    }
+
+    inline Vector3int32 operator*(const int s) const
+    {
+        return Vector3int32(x * s, y * s, z * s);
+    }
+
+    inline Vector3int32& operator+=(const Vector3int32& other)
+    {
+        x += other.x;
+        y += other.y;
+        z += other.y;
+        return *this;
+    }
+
+    inline Vector3int32& operator-=(const Vector3int32& other)
+    {
+        x -= other.x;
+        y -= other.y;
+        z -= other.z;
+        return *this;
+    }
+
+    inline Vector3int32& operator*=(const Vector3int32& other)
+    {
+        x *= other.x;
+        y *= other.y;
+        z *= other.z;
+        return *this;
+    }
+
+    inline bool operator==(const Vector3int32& rkVector) const
+    {
+        return (x == rkVector.x && y == rkVector.y && z == rkVector.z);
+    }
+
+    inline bool operator!=(const Vector3int32& rkVector) const
+    {
+        return (x != rkVector.x || y != rkVector.y || z != rkVector.z);
+    }
+
+    Vector3int32 max(const Vector3int32& v) const
+    {
+        return Vector3int32(iMax(x, v.x), iMax(y, v.y), iMax(z, v.z));
+    }
+
+    Vector3int32 min(const Vector3int32& v) const
+    {
+        return Vector3int32(iMin(x, v.x), iMin(y, v.y), iMin(z, v.z));
+    }
+
+    std::string toString() const;
+} G3D_END_PACKED_CLASS(4)
+
+} // namespace G3D
+
+template<>
+struct HashTrait<G3D::Vector3int32>
+{
+    static size_t hashCode(const G3D::Vector3int32& key)
+    {
+        // Mask for the top bit of a uint32
+        const G3D::uint32 top = (1UL << 31);
+        // Mask for the bottom 10 bits of a uint32
+        const G3D::uint32 bot = 0x000003FF;
+        return static_cast<size_t>(
+            ((key.x & top) | ((key.y & top) >> 1) | ((key.z & top) >> 2)) | (((key.x & bot) << 19) ^ ((key.y & bot) << 10) ^ (key.z & bot)));
+    }
+};
+
+#endif