minor edit to parameterize hue_power

src/simple_hsb_func/HSBField_polar.gdshader

@@ -3,6 +3,7 @@ shader_type canvas_item;
 uniform vec2 resolution = vec2(40,40);
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float hue_power: hint_range(1.0, 10.0, 0.1) = 1.0;
 
 //  Function from Iñigo Quiles
 //  https://www.shadertoy.com/view/MsS3Wc
@@ -25,7 +26,7 @@ void fragment() {
 	float radius = length(toCenter)*2.0;
 	
 	float normHue = (angle/(PI*2.0))+0.5;
-	normHue = pow(normHue, 3.0);
+	normHue = pow(normHue, hue_power);
 	
 	color = hsb2rgb(vec3(normHue,radius,1.0));
 	

src/simple_hsb_func/HSBField_polar.tscn

@@ -7,6 +7,7 @@ shader = ExtResource("1_y6vnc")
 shader_parameter/resolution = Vector2(40, 40)
 shader_parameter/u_resolution = Vector2(0, 0)
 shader_parameter/u_time = 0.0
+shader_parameter/hue_power = 1.0
 
 [node name="HsbField" type="Control"]
 layout_mode = 3