methods for calculate bezier length

Programming Questions

clankill3r

in Programming Questions • 1 year ago

I came up with this, seems to work fine.

I'm just wondering are there any other methods?

void setup() {
size(400, 400);
noFill();
bezier(255, 60, 30, 30, 270, 270, 45, 240);
println(bezierLength(255, 60, 30, 30, 270, 270, 45, 240, 0.01));
}
float bezierLength(float x1, float y1, float cx1, float cy1, float cx2, float cy2, float x2, float y2, float precision) {
if (precision <= 0 || precision >= 1) return -1;
float l = 0;
float i = 0;
while (i+precision <= 1) {
float xPos1 = bezierPoint(x1, cx1, cx2, x2, i);
float xPos2 = bezierPoint(x1, cx1, cx2, x2, i+precision);
float yPos1 = bezierPoint(y1, cy1, cy2, y2, i);
float yPos2 = bezierPoint(y1, cy1, cy2, y2, i+precision);
l += dist(xPos1, yPos1, xPos2, yPos2);
println(i+precision);
i += precision;
}
return l;
}