add @viewport_rect for dynamic sizing

addons/anima/utils/node_properties.gd

@@ -90,7 +90,6 @@ static func set_2D_pivot(node: Node, pivot: int) -> void:
 				node.global_position = position - node.offset
 		_:
 			pass
-#			printerr('Pivot point not handled yet')
 
 static func get_property_value(node: Node, animation_data: Dictionary, property = null):
 	if property == null:
@@ -174,6 +173,13 @@ static func get_property_value(node: Node, animation_data: Dictionary, property
 		node_property_name = property_name
 	elif rect_property_name in node:
 		node_property_name = rect_property_name
+	elif property_name == "@viewport_rect":
+		var rect = node.get_viewport_rect()
+
+		if subkey == "x":
+			return rect.size.x
+		else:
+			return rect.size.y
 
 	if p[0] == 'shader_param':
 		var material: ShaderMaterial

addons/anima/utils/tween_utils.gd

@@ -95,8 +95,8 @@ static func calculate_dynamic_value(value, animation_data: Dictionary):
 	else:
 		values_to_check = value
 
-	var regex := RegEx.new()
-	regex.compile("([\\.:\\/]*[a-zA-Z]*:[a-z]*:?[^\\s]+)")
+	var DYNAMIC_EXTRACTOR_REGEX := RegEx.new()
+	DYNAMIC_EXTRACTOR_REGEX.compile("(@?[\\.:\\/]*[a-zA-Z_]*:[a-z]*:?[^\\s\\)]+)")
 
 	var all_results := []
 	var root = animation_data.node
@@ -108,21 +108,25 @@ static func calculate_dynamic_value(value, animation_data: Dictionary):
 		if single_formula == "":
 			single_formula = "0.0"
 
-		var results := regex.search_all(single_formula)
+		var results := DYNAMIC_EXTRACTOR_REGEX.search_all(single_formula)
 		var variables := []
 		var values := []
 
 		results.reverse()
 
 		for index in results.size():
 			var rm: RegExMatch = results[index]
-			var info: Array = rm.get_string().split(":")
+			var regex_result = rm.get_string()
+			var info: Array = regex_result.split(":")
 			var source = info.pop_front()
 			var source_node: Node
+			var property: String = ":".join(PackedStringArray(info))
 
-
 			if source == '' or source == '.':
 				source_node = animation_data.node
+			elif source[0] == '@':
+				source_node = animation_data.node
+				property = regex_result
 			else:
 				source_node = root.get_node(source)
 
@@ -131,16 +135,12 @@ static func calculate_dynamic_value(value, animation_data: Dictionary):
 
 				return value
 
-			var property: String = ":".join(PackedStringArray(info))
-
 			var property_value = AnimaNodesProperties.get_property_value(source_node, animation_data, property)
 			var variable := char(65 + index)
 
 			variables.push_back(variable)
 			values.push_back(property_value)
 
-#			single_formula.erase(rm.get_start(), rm.get_end() - rm.get_start())
-#			single_formula = single_formula.insert(rm.get_start(), variable)
 			single_formula = "%s%s%s" % [single_formula.substr(0, rm.get_start()), variable, single_formula.substr(rm.get_end())]
 
 		var expression := Expression.new()