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Diffstat (limited to 'src/Vector3d.h')
| -rw-r--r-- | src/Vector3d.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/Vector3d.h b/src/Vector3d.h new file mode 100644 index 000000000..a06a17c09 --- /dev/null +++ b/src/Vector3d.h @@ -0,0 +1,81 @@ +#pragma once + +#include <math.h> + +class Vector3f; + + + +// tolua_begin + +class Vector3d +{ +public: + // convert from float + Vector3d(const Vector3f & v); + Vector3d(const Vector3f * v); + + Vector3d() : x(0), y(0), z(0) {} + Vector3d(double a_x, double a_y, double a_z) : x(a_x), y(a_y), z(a_z) {} + + inline void Set(double a_x, double a_y, double a_z) { x = a_x, y = a_y, z = a_z; } + inline void Normalize() { double l = 1.0f / Length(); x *= l; y *= l; z *= l; } + inline Vector3d NormalizeCopy() { double l = 1.0f / Length(); return Vector3d( x * l, y * l, z * l ); } + inline void NormalizeCopy(Vector3d & a_V) { double l = 1.0f / Length(); a_V.Set(x*l, y*l, z*l ); } + inline double Length() const { return (double)sqrt( x * x + y * y + z * z ); } + inline double SqrLength() const { return x * x + y * y + z * z; } + inline double Dot( const Vector3d & a_V ) const { return x * a_V.x + y * a_V.y + z * a_V.z; } + inline Vector3d Cross( const Vector3d & v ) const { return Vector3d( y * v.z - z * v.y, z * v.x - x * v.z, x * v.y - y * v.x ); } + + /** Returns the coefficient for the (a_OtherEnd - this) line to reach the specified Z coord + The result satisfies the following equation: + (*this + Result * (a_OtherEnd - *this)).z = a_Z + If the line is too close to being parallel, this function returns NO_INTERSECTION + */ + double LineCoeffToXYPlane(const Vector3d & a_OtherEnd, double a_Z) const; + + /** Returns the coefficient for the (a_OtherEnd - this) line to reach the specified Y coord + The result satisfies the following equation: + (*this + Result * (a_OtherEnd - *this)).y = a_Y + If the line is too close to being parallel, this function returns NO_INTERSECTION + */ + double LineCoeffToXZPlane(const Vector3d & a_OtherEnd, double a_Y) const; + + /** Returns the coefficient for the (a_OtherEnd - this) line to reach the specified X coord + The result satisfies the following equation: + (*this + Result * (a_OtherEnd - *this)).x = a_X + If the line is too close to being parallel, this function returns NO_INTERSECTION + */ + double LineCoeffToYZPlane(const Vector3d & a_OtherEnd, double a_X) const; + + inline bool Equals(const Vector3d & v) const { return ((x == v.x) && (y == v.y) && (z == v.z)); } + + // tolua_end + + void operator += ( const Vector3d& a_V ) { x += a_V.x; y += a_V.y; z += a_V.z; } + void operator += ( Vector3d* a_V ) { x += a_V->x; y += a_V->y; z += a_V->z; } + void operator -= ( const Vector3d& a_V ) { x -= a_V.x; y -= a_V.y; z -= a_V.z; } + void operator -= ( Vector3d* a_V ) { x -= a_V->x; y -= a_V->y; z -= a_V->z; } + void operator *= ( double a_f ) { x *= a_f; y *= a_f; z *= a_f; } + + // tolua_begin + + Vector3d operator + (const Vector3d & v2) const { return Vector3d(x + v2.x, y + v2.y, z + v2.z ); } + Vector3d operator + (const Vector3d * v2) const { return Vector3d(x + v2->x, y + v2->y, z + v2->z ); } + Vector3d operator - (const Vector3d & v2) const { return Vector3d(x - v2.x, y - v2.y, z - v2.z ); } + Vector3d operator - (const Vector3d * v2) const { return Vector3d(x - v2->x, y - v2->y, z - v2->z ); } + Vector3d operator * (const double f) const { return Vector3d(x * f, y * f, z * f ); } + Vector3d operator * (const Vector3d & v2) const { return Vector3d(x * v2.x, y * v2.y, z * v2.z ); } + Vector3d operator / (const double f) const { return Vector3d(x / f, y / f, z / f ); } + + double x, y, z; + + static const double EPS; ///< The max difference between two coords for which the coords are assumed equal + static const double NO_INTERSECTION; ///< Return value of LineCoeffToPlane() if the line is parallel to the plane +} ; + +// tolua_end + + + + |