Koch fractal node refactored

addons/ShaderLib/Procedural/Shapes/KochFractal.gd

@@ -1,86 +0,0 @@
-@tool
-class_name VisualShaderNodeProceduralKochFractal extends VisualShaderNodeCustom
-
-func _init() -> void:
-	output_port_for_preview = 0
-
-func _get_name() -> String:
-	return "KochFractal"
-
-func _get_category() -> String:
-	return "Procedural/Shapes"
-
-func _get_description() -> String:
-	return "Generates an koch curve similar to ice fractal shape based on input UV at the size specified by inputs width and height."
-
-func _get_return_icon_type() -> PortType:
-	return PORT_TYPE_SCALAR
-
-func _get_input_port_count() -> int:
-	return 5
-
-func _get_input_port_name(port: int) -> String:
-	match port:
-		0:
-			return "uv"
-		1:
-			return "thickness"
-		2:
-			return "iterations"
-		3:
-			return "widht"
-		_:
-			return "height"
-
-func _get_input_port_type(port: int) -> PortType:
-	match port:
-		0:
-			return PORT_TYPE_VECTOR_2D
-		2:
-			return PORT_TYPE_SCALAR_INT
-		_:
-			return PORT_TYPE_SCALAR
-
-func _get_input_port_default_value(port: int) -> Variant:
-	match port:
-		1, 3, 4:
-			return 1.0
-		2:
-			return 3
-		_:
-			return null
-
-func _get_output_port_count() -> int:
-	return 2
-
-func _get_output_port_name(port: int) -> String:
-	match port:
-		0:
-			return "out"
-		_:
-			return "uv"
-
-func _get_output_port_type(port: int) -> PortType:
-	match port:
-		1:
-			return PORT_TYPE_VECTOR_2D
-		_:
-			return PORT_TYPE_SCALAR
-
-func _get_global_code(mode: Shader.Mode) -> String:
-	var code: String = preload("KochFractal.gdshaderinc").code
-	return code
-
-func _get_code(input_vars: Array[String], output_vars: Array[String], mode: Shader.Mode, type: VisualShader.Type) -> String:
-	var uv: String = "UV"
-
-	if input_vars[0]:
-		uv = input_vars[0]
-
-	var thickness: String = input_vars[1]
-	var iterations: String = input_vars[2]
-	var width: String = input_vars[3]
-	var height: String = input_vars[4]
-
-	return output_vars[0] + " = koch_fractal(%s, %s, %s, %s, %s, %s);" % [uv, thickness, iterations, width, height, output_vars[1]]
-

addons/ShaderLib/Procedural/Shapes/KochFractal.gdshaderinc

@@ -1,36 +0,0 @@
-vec2 koch_fractal_direction(float angle){
-	return vec2(sin(angle), cos(angle));
-}
-
-float koch_fractal(vec2 uv, float outline, int iteration, float shape_width, float shape_height, out vec2 koch_uv) {
-	float tiling = 3.0;
-	vec2 center = uv - vec2(.5);
-	shape_width =  .85 * (shape_width / 1.);
-	shape_height = .85 * (shape_height / 1.);
-	center.x /= shape_width;
-	center.y /= shape_height;
-
-	center.x = abs(center.x);
-	center.y += tan(.833 * PI) * .5;
-	vec2 dir = koch_fractal_direction(.833 * PI);
-	float dist = dot(center - vec2(tiling / (2. * tiling), 0), dir);
-	center -= dir * max(0, dist) * 2.0;
-
-	dir = koch_fractal_direction(.6667 * PI);
-	float scale = 1.0;
-	center.x += .5;
-	for(int i = 0; i < iteration; i++){
-		center *= tiling;
-		scale *= tiling;
-		center.x -= .5 * tiling;
-
-		center.x = abs(center.x);
-		center.x -= .5;
-		center -= dir * min(0.0, dot(center, dir)) * 2.0;
-	}
-
-	dist = length(center - vec2(clamp(center.x, -1.0, 1.0), 0));
-	dist += step(outline / 100.0, dist / scale);
-	koch_uv = abs(center);
-	return 1.0 - dist;
-}