Cubic Interpolation
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Cubic Interpolation
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Join For Free// cubic interpolation function for equidistant 4 points
// 0 <= mu <=1
float cubic_interpolate( float y0, float y1, float y2, float y3, float mu ) {
float a0, a1, a2, a3, mu2;
mu2 = mu*mu;
a0 = y3 - y2 - y0 + y1; //p
a1 = y0 - y1 - a0;
a2 = y2 - y0;
a3 = y1;
return ( a0*mu*mu2 + a1*mu2 + a2*mu + a3 );
}
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