Code refactored to incorporate #6

addons/ShaderLib_v2_2_4/Maths/Vector/ProjectOnPlane.gd

@@ -0,0 +1,44 @@
+@tool
+class_name VisualShaderNodeVectorProjectOnPlane extends ShaderLib
+
+func _get_name() -> String:
+	return "ProjectOnPlane"
+
+func _get_category() -> String:
+	return "Maths/Vector"
+
+func _get_description() -> String:
+	return "Projects a vector onto a plane defined by a normal orthogonal to the plane."
+
+func _get_return_icon_type() -> PortType:
+	return PORT_TYPE_VECTOR_3D
+
+func _get_input_port_count() -> int:
+	return 2
+
+func _get_input_port_name(port: int) -> String:
+	match port:
+		0:
+			return "vector"
+		_:
+			return "plane normal"
+
+func _get_input_port_type(port: int) -> PortType:
+	return PORT_TYPE_VECTOR_3D
+
+func _get_output_port_count() -> int:
+	return 1
+
+func _get_output_port_name(port: int) -> String:
+	return "vector"
+
+func _get_output_port_type(port: int) -> PortType:
+	return PORT_TYPE_VECTOR_3D
+
+func _get_global_code(mode: Shader.Mode) -> String:
+	return "#include \"res://addons/ShaderLib_%s/Maths/Maths.gdshaderinc\"" % [version]
+
+func _get_code(input_vars: Array[String], output_vars: Array[String], mode: Shader.Mode, type: VisualShader.Type) -> String:
+	var vector_a: String = input_vars[0]
+	var plane_normal: String = input_vars[1]
+	return output_vars[0] + " = project_on_plane(%s, %s);" % [vector_a, plane_normal]