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pair pair_ratio(pair a, pair b, real fraction) {
return a + (b - a)*fraction;
}
real real_ratio(real a, real b, real fraction) {
return a + (b - a)*fraction;
}
void draw_tic(pair a, pair b, real fraction, real tic_height, bool label) {
pair pt1 = pair_ratio(a, b, fraction);
pair pt2 = pt1 - (0, tic_height);
draw(pt1 -- pt2);
if (label) {
label(format("%f\%", fraction*100), pt2, S);
}
}
void draw_marker(pair a, pair b, real value, real marker_height) {
pair markpt = pair_ratio(a, b, value);
pair pt = (markpt.x, markpt.y + marker_height);
label("*", pt);
}
void draw_scale(pair a, pair b, real value, real tic_height) {
draw(pair_ratio(a, b, 0) -- pair_ratio(a, b, 1));
draw_tic(a, b, 0.05, tic_height, true);
draw_tic(a, b, 0.5, tic_height, true);
draw_tic(a, b, 0.95, tic_height, true);
draw_tic(a, b, 0.25, 0.5*tic_height, false);
draw_tic(a, b, 0.75, 0.5*tic_height, false);
draw_marker(a, b, value, 0.5*tic_height);
}
void draw_biometry(string param, string param_age, real percentile) {
real width = 100;
real height = 75;
label(param, (width/2, 2*height/3), N);
label(param_age, (width/2, 2*height/3), S);
pair scale1 = (0.1*width, 0.25*height);
pair scale2 = (0.9*width, 0.25*height);
draw_scale(scale1, scale2, percentile/100, 0.1*height);
}
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