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includes :
#include "KSpline.h"
struct KPoint
{
double x , y ;
double coefx , coefy ;
};
the coordinnates of the points are in pixels. (0,0 being the top left of the screen )
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Quick Reference
getPoint
getPointFromCtrlPoint
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void getPointFromCtrlPoint( KPoint *kPoint , KPoint *controlP1, KPoint *controlP2 , KPoint *controlP3 , double position) ;
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uses the "middle" (2nd) point of the spline as control point.
position ranges from 0 to 1
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void getPoint( KPoint *kPoint , double x1,double y1 ,double x2,double y2 , double coefX1 , double coefY1 , double coefX2 , double coefY2 , double position)
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uses 2 control points.
position ranges from 0 to 1
Example:
KPoint destPoint ;
KSpline ks ;
for ( progress = 0 ; progress <= 1 ; progress +=0.01f )
{
ks.getPoint( &destPoint , 50,50,600,400,300,100,400,250,position )
surface->plotPlixel( destPoint.x ,destPoint.y , 1,1,1,1 ) ;
} |
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