Motion Lines

Simple Godot 3 motion lines.

Put it on a ColorRect.

Parameters:
– speedScale: The speed which the lines move.
– clipPosition: The distance from the center that the lines appear.

It has colour support by changing the rect’s colour!

Shader code

shader_type canvas_item;

uniform float speedScale = 16.0;
uniform float clipPosition = 0.2;

float random (vec2 uv) {
    return fract(sin(dot(uv.xy,
        vec2(12.9898,78.233))) * 43758.5453123);
}

void fragment() {
	COLOR.a = 0.0;
	
	vec2 pos = UV - vec2(0.5);
	float theta = round(64.0 * atan(pos.y, pos.x));
	float dist = sqrt(pow(pos.x, 2) + pow(pos.y, 2));
	
	float distValue = round(dist * 4.0 + TIME * -speedScale + 8.0 * random(vec2(theta)));
	if (dist > clipPosition + random(vec2(theta)) * 0.3 && random(vec2(theta, distValue)) < 0.02) {
		COLOR.a = 1.0;
	}
}

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