jQuery+three.js+CSS3 snowflake falling animation effect
code segment:
var particle = particles[i];
//Scroll to the floor module to reduce snowflakes (custom)
if ($(window).scrollTop() < 1000) {
particle.scale.x = particle.scale.y = 1;
} else {
if (i > particles.length / 5 * 3) {
particle.scale.x = particle.scale.y = 0;
} else {
particle.scale.x = particle.scale.y = 0.8;
}
}
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