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draw a Bézier curve with n number of points
//draw_curve(prec,x0,y0,x1,y1...,xn,yn)
var a,b,i,xx,yy,px,py,prec,num;
xx=argument1;
yy=argument2;
prec=1/argument0;
num=(argument_count-1) div 2;
for(i=prec; i<=1; i+=prec)
{
for (a=0; a<num; a+=1)
{
px[a]=argument[a*2+1];
py[a]=argument[a*2+2];
}
for (a=num-1; a>0; a-=1)
for (b=0; b<a; b+=1)
{
px[b]+=(px[b+1]-px[b])*i;
py[b]+=(py[b+1]-py[b])*i;
}
draw_line(xx,yy,px[0],py[0]);
xx=px[0]; yy=py[0];
}
example:
draw_curve(40,200,200,mouse_x,mouse_y,400,200);
Last edited by omar (2016-12-08 11:44:59)
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