Radar Blip

Creates a radar blip (Part of a pack of 3 shaders)

I used a ColorRect in the size that I wanted the scanner to be

Cutout: How much space should be cut out from the edge
Inner Fill: How much space should be in between the edge and central area

Blink Speed: How fast the central area should blink on and off (0.0 to hide the central area)

Shader code
shader_type canvas_item;

// --- Uniforms --- //
uniform float cutout: hint_range(0.0, 1.0, 0.01) = 0.20;
uniform float inner_fill: hint_range(0.0, 1.0, 0.01) = 0.15;

uniform float blink_speed: hint_range(0.0, 10.0, 0.1) = 2.0;

// --- Functions --- //
void fragment() {
	float dist = distance(UV, vec2(0.5));
	COLOR.a *= 1.0 - step(0.5, dist);
	COLOR.a += step(0.5 - cutout / 2.0, dist);
	COLOR.a -= step((0.5 - (cutout + inner_fill) / 2.0) * step(0.5, mod(TIME * blink_speed, 1.0)), dist);
animated, blinking, radar, radar blip
The shader code and all code snippets in this post are under CC0 license and can be used freely without the author's permission. Images and videos, and assets depicted in those, do not fall under this license. For more info, see our License terms.

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Radar with trace blip

Radar Blip Ring

Radar Scanning Effect Shader

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