PbezierPoint
processing
Evaluates the Bezier at point t for points a, b, c, d. The parameter t varies between 0 and 1, a and d are points on the curve, and b and c are the control points. This can be done once with the x coordinates and a second time with the y coordinates to get the location of a bezier curve at t.
Link to original Processing doc
See also
Signatures
Examples
// @preview image
//draw ellipses along the curve
300 200 '2D3' PGraphics
255 Pbackground
16 PtextSize
50 'x1' STORE
50 'y1' STORE
200 'x2' STORE
130 'y2' STORE
100 'cx1' STORE
40 'cy1' STORE
110 'cx2' STORE
140 'cy2' STORE
4 PstrokeWeight
$x1 $y1 Ppoint //first anchor
$x2 $y2 Ppoint //second anchor
2 PstrokeWeight
$x1 $y1 $cx1 $cy1 Pline
$x2 $y2 $cx2 $cy2 Pline
2 PstrokeWeight
0xffff0000 Pstroke
$x1 $y1 $cx1 $cy1 $cx2 $cy2 $x2 $y2 Pbezier
0 10
<%
10.0 / 't' STORE
$x1 $cx1 $cx2 $x2 $t PbezierPoint 'x' STORE
$y1 $cy1 $cy2 $y2 $t PbezierPoint 'y' STORE
0x9f009f00 Pfill
PnoStroke
'CENTER' PellipseMode
$x $y 5 5 Pellipse
%> FOR
Pencode