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    <p>You had a number of things wrong with your operators, although most of them weren't used. I modified your class. I notice you have not shown your code for the <code>getx()</code> (etc) members. I implemented those inline, but perhaps they were responsible for the garbage? Here is the test program with my changes. It seems to work fine:</p> <pre><code>class vector3 { public: vector3::vector3() :x(0), y(0), z(0) {} vector3::~vector3() {} vector3(float inx,float iny,float inz) : x(inx), y(iny), z(inz) {} //Vector operators _inline vector3&amp; operator=(const vector3&amp; invec) { // Assignment x = invec.x; y = invec.y; z = invec.z; return *this; } _inline vector3 operator+(const vector3&amp; invec) const {//Addition return vector3(x+invec.x,y+invec.y,z+invec.z); } _inline vector3 operator-(const vector3&amp; invec) const {//Subtraction return vector3(x-invec.x,y-invec.y,z-invec.z); } _inline vector3 operator*(const vector3&amp; invec) const {//Multiplication return vector3(x*invec.x,y*invec.y,z*invec.z); } _inline vector3 operator/(const vector3&amp; invec) const {//Division return vector3(x/invec.x,y/invec.y,z/invec.z); } //scalar operators _inline vector3&amp; operator+=(const float&amp; scalar){//Addition self-assignment x+=scalar,y+=scalar,z+=scalar; return *this; } _inline vector3&amp; operator-=(const float&amp; scalar){//Subtraction self-assignment x-=scalar,y-=scalar,z-=scalar; return *this; } _inline vector3&amp; operator*=(const float&amp; scalar){//Multiplication self-assignment x*=scalar,y*=scalar,z*=scalar; return *this; } _inline vector3 operator*(const float&amp; scalar) const { return vector3(x*scalar, y*scalar, z*scalar); } //Math methods _inline vector3 operator^(const vector3&amp; invec) const {//Cross product return vector3( (y*invec.z-z*invec.y), (z*invec.x-x*invec.z), (x*invec.y-y*invec.x)); } _inline float operator&amp;(const vector3&amp; invec) const {//Dot product return (x*invec.x)+(y*invec.y)+(z*invec.z); } _inline float distance(vector3&amp;) const;//Distance _inline void normalize(){ float mag = sqrtf(x*x+y*y+z*z); x/=mag; y/=mag; z/=mag; } float x; float y; float z; _inline float getx() const { return x; } _inline float gety() const { return y; } _inline float getz() const { return z; } float getMagnitude() const; }; _inline vector3 createCatmulRomSpline(vector3 P0, vector3 P1, vector3 P2, vector3 P3, float t) { float t2 = t*t; float t3 = t2*t; vector3 result = ((P1*2) + (P2 - P0) * t + (P0*2 - P1 * 5 + P2*4 - P3)*t2 + (P1*3 - P0- P2*3 + P3) * t3)*0.5f; return result; } int main() { vector3 vectorOne(0,0,0); vector3 vectorTwo(5,10,1); vector3 vectorThree(10,10,2); vector3 vectorFour(15,0,3); const int ndiv = 10; for( int i = 0; i &lt;= ndiv; i++ ) { float t = (float)i / ndiv; vector3 SplineVector = createCatmulRomSpline(vectorOne, vectorTwo, vectorThree, vectorFour, t); cout &lt;&lt; "curve pos X: " &lt;&lt; SplineVector.getx() &lt;&lt; "\n"; cout &lt;&lt; "curve pos Y: " &lt;&lt; SplineVector.gety() &lt;&lt; "\n"; cout &lt;&lt; "curve pos Z: " &lt;&lt; SplineVector.getz() &lt;&lt; "\n\n"; } return 0; } </code></pre>
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    1. POGenerating Catmull Rom spline and returning garbage
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    1. USpaddy
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    1. COThank you, I appreciate your help.
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