diff --git a/addons/ShaderLib/Procedural/Shapes/Rectangle.gd b/addons/ShaderLib/Procedural/Shapes/Rectangle.gd new file mode 100644 index 0000000..4cc2faf --- /dev/null +++ b/addons/ShaderLib/Procedural/Shapes/Rectangle.gd @@ -0,0 +1,65 @@ +@tool +class_name VisualShaderNodeProceduralRectangle extends VisualShaderNodeCustom + +func _init() -> void: + _set_input_port_default_value(1, 0.5) + _set_input_port_default_value(2, 0.5) + + output_port_for_preview = 0 + +func _get_name() -> String: + return "Rectangle" + +func _get_category() -> String: + return "Procedural/Shapes" + +func _get_description() -> String: + return "Generates a rectangle shape based on input UV at the size specified by inputs width and height." + +func _get_return_icon_type() -> VisualShaderNode.PortType: + return PORT_TYPE_SCALAR + +func _get_input_port_count() -> int: + return 3 + +func _get_input_port_name(port: int) -> String: + match port: + 0: + return "uv" + 1: + return "width" + 2: + return "height" + return "" + +func _get_input_port_type(port: int) -> VisualShaderNode.PortType: + match port: + 0: + return PORT_TYPE_VECTOR_2D + 1, 2: + return PORT_TYPE_SCALAR + return PORT_TYPE_SCALAR + +func _get_output_port_count() -> int: + return 1 + +func _get_output_port_name(port: int) -> String: + return "output" + +func _get_output_port_type(port: int) -> VisualShaderNode.PortType: + return PORT_TYPE_SCALAR + +func _get_global_code(mode: Shader.Mode) -> String: + var code: String = preload("Rectangle.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 width: String = input_vars[1] + var height: String = input_vars[2] + + return output_vars[0] + " = rectangle_shape(%s, %s, %s);" % [uv, width, height] diff --git a/addons/ShaderLib/Procedural/Shapes/Rectangle.gdshaderinc b/addons/ShaderLib/Procedural/Shapes/Rectangle.gdshaderinc new file mode 100644 index 0000000..50a9d11 --- /dev/null +++ b/addons/ShaderLib/Procedural/Shapes/Rectangle.gdshaderinc @@ -0,0 +1,5 @@ +float rectangle_shape(vec2 uv, float width, float height){ + vec2 _distance = abs(uv * 2.0 - 1.0) - vec2(width, height); + _distance = 1.0 - _distance / fwidth(_distance); + return clamp(min(_distance.x, _distance.y), 0.0, 1.0); +} \ No newline at end of file