111 lines
1.5 KiB
C++
111 lines
1.5 KiB
C++
// P3.cpp: implementation of the CP3 class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "Test.h"
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#include "P3.h"
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#include "math.h"
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[]=__FILE__;
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#define new DEBUG_NEW
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CP3::CP3()
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{
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z=0.0;
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}
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CP3::~CP3()
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{
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}
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CP3::CP3(double x,double y,double z):CP2(x,y)
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{
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this->z=z;
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}
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CP3 operator +(const CP3 &p0,const CP3 &p1)//和
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{
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CP3 p;
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p.x=p0.x+p1.x;
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p.y=p0.y+p1.y;
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p.z=p0.z+p1.z;
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return p;
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}
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CP3 operator -(const CP3 &p0,const CP3 &p1)//差
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{
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CP3 p;
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p.x=p0.x-p1.x;
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p.y=p0.y-p1.y;
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p.z=p0.z-p1.z;
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return p;
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}
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CP3 operator *(const CP3 &p,double k)//点和常量的积
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{
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return CP3(p.x*k,p.y*k,p.z*k);
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}
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CP3 operator *(double k,const CP3 &p)//点和常量的积
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{
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return CP3(p.x*k,p.y*k,p.z*k);
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}
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CP3 operator /(const CP3 &p0,double k)//数除
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{
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if(fabs(k)<1e-6)
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k=1.0;
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CP3 p;
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p.x=p0.x/k;
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p.y=p0.y/k;
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p.z=p0.z/k;
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return p;
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}
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CP3 operator+=(CP3 &p0,CP3 &p1)
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{
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p0.x=p0.x+p1.x;
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p0.y=p0.y+p1.y;
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p0.z=p0.z+p1.z;
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return p0;
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}
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CP3 operator-=(CP3 &p0,CP3 &p1)
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{
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p0.x=p0.x-p1.x;
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p0.y=p0.y-p1.y;
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p0.z=p0.z-p1.z;
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return p0;
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}
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CP3 operator*=(CP3 &p0,double k)
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{
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p0.x=p0.x*k;
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p0.y=p0.y*k;
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p0.z=p0.z*k;
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return p0;
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}
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CP3 operator/=(CP3 &p0,double k)
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{
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if(fabs(k)<1e-6)
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k=1.0;
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p0.x=p0.x/k;
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p0.y=p0.y/k;
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p0.z=p0.z/k;
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return p0;
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}
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double CP3::Mag()//长度
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{
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return sqrt(x*x+y*y+z*z);
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}
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