Base class of anything 2D. Base class of anything 2D. Canvas items are laid out in a tree; children inherit and extend their parent's transform. [CanvasItem] is extended by [Control] for anything GUI-related, and by [Node2D] for anything related to the 2D engine. Any [CanvasItem] can draw. For this, [method queue_redraw] is called by the engine, then [constant NOTIFICATION_DRAW] will be received on idle time to request redraw. Because of this, canvas items don't need to be redrawn on every frame, improving the performance significantly. Several functions for drawing on the [CanvasItem] are provided (see [code]draw_*[/code] functions). However, they can only be used inside [method _draw], its corresponding [method Object._notification] or methods connected to the [signal draw] signal. Canvas items are drawn in tree order. By default, children are on top of their parents so a root [CanvasItem] will be drawn behind everything. This behavior can be changed on a per-item basis. A [CanvasItem] can also be hidden, which will also hide its children. It provides many ways to change parameters such as modulation (for itself and its children) and self modulation (only for itself), as well as its blend mode. Ultimately, a transform notification can be requested, which will notify the node that its global position changed in case the parent tree changed. [b]Note:[/b] Unless otherwise specified, all methods that have angle parameters must have angles specified as [i]radians[/i]. To convert degrees to radians, use [method @GlobalScope.deg_to_rad]. $DOCS_URL/tutorials/2d/2d_transforms.html $DOCS_URL/tutorials/2d/custom_drawing_in_2d.html https://godotengine.org/asset-library/asset/528 Called when [CanvasItem] has been requested to redraw (after [method queue_redraw] is called, either manually or by the engine). Corresponds to the [constant NOTIFICATION_DRAW] notification in [method Object._notification]. Subsequent drawing commands will be ignored unless they fall within the specified animation slice. This is a faster way to implement animations that loop on background rather than redrawing constantly. Draws an unfilled arc between the given angles with a uniform [param color] and [param width] and optional antialiasing (supported only for positive [param width]). The larger the value of [param point_count], the smoother the curve. See also [method draw_circle]. If [param width] is negative, then the arc is drawn using [constant RenderingServer.PRIMITIVE_LINE_STRIP]. This means that when the CanvasItem is scaled, the arc will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. The arc is drawn from [param start_angle] towards the value of [param end_angle] so in clockwise direction if [code]start_angle < end_angle[/code] and counter-clockwise otherwise. Passing the same angles but in reversed order will produce the same arc. If absolute difference of [param start_angle] and [param end_angle] is greater than [constant @GDScript.TAU] radians, then a full circle arc is drawn (i.e. arc will not overlap itself). Draws a string first character using a custom font. Draws a string first character outline using a custom font. Draws a colored, filled circle. See also [method draw_arc], [method draw_polyline] and [method draw_polygon]. Draws a colored polygon of any number of points, convex or concave. Unlike [method draw_polygon], a single color must be specified for the whole polygon. Draws a dashed line from a 2D point to another, with a given color and width. See also [method draw_multiline] and [method draw_polyline]. If [param width] is negative, then a two-point primitives will be drawn instead of a four-point ones. This means that when the CanvasItem is scaled, the line parts will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. After submitting all animations slices via [method draw_animation_slice], this function can be used to revert drawing to its default state (all subsequent drawing commands will be visible). If you don't care about this particular use case, usage of this function after submitting the slices is not required. Draws a textured rectangle region of the font texture with LCD subpixel anti-aliasing at a given position, optionally modulated by a color. Texture is drawn using the following blend operation, blend mode of the [CanvasItemMaterial] is ignored: [codeblock] dst.r = texture.r * modulate.r * modulate.a + dst.r * (1.0 - texture.r * modulate.a); dst.g = texture.g * modulate.g * modulate.a + dst.g * (1.0 - texture.g * modulate.a); dst.b = texture.b * modulate.b * modulate.a + dst.b * (1.0 - texture.b * modulate.a); dst.a = modulate.a + dst.a * (1.0 - modulate.a); [/codeblock] Draws a line from a 2D point to another, with a given color and width. It can be optionally antialiased. See also [method draw_multiline] and [method draw_polyline]. If [param width] is negative, then a two-point primitive will be drawn instead of a four-point one. This means that when the CanvasItem is scaled, the line will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. Draws a [Mesh] in 2D, using the provided texture. See [MeshInstance2D] for related documentation. Draws a textured rectangle region of the multi-channel signed distance field texture at a given position, optionally modulated by a color. See [member FontFile.multichannel_signed_distance_field] for more information and caveats about MSDF font rendering. If [param outline] is positive, each alpha channel value of pixel in region is set to maximum value of true distance in the [param outline] radius. Value of the [param pixel_range] should the same that was used during distance field texture generation. Draws multiple disconnected lines with a uniform [param color]. When drawing large amounts of lines, this is faster than using individual [method draw_line] calls. To draw interconnected lines, use [method draw_polyline] instead. If [param width] is negative, then two-point primitives will be drawn instead of a four-point ones. This means that when the CanvasItem is scaled, the lines will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. Draws multiple disconnected lines with a uniform [param width] and segment-by-segment coloring. Colors assigned to line segments match by index between [param points] and [param colors]. When drawing large amounts of lines, this is faster than using individual [method draw_line] calls. To draw interconnected lines, use [method draw_polyline_colors] instead. If [param width] is negative, then two-point primitives will be drawn instead of a four-point ones. This means that when the CanvasItem is scaled, the lines will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. Breaks [param text] into lines and draws it using the specified [param font] at the [param pos] (top-left corner). The text will have its color multiplied by [param modulate]. If [param width] is greater than or equal to 0, the text will be clipped if it exceeds the specified width. Breaks [param text] to the lines and draws text outline using the specified [param font] at the [param pos] (top-left corner). The text will have its color multiplied by [param modulate]. If [param width] is greater than or equal to 0, the text will be clipped if it exceeds the specified width. Draws a [MultiMesh] in 2D with the provided texture. See [MultiMeshInstance2D] for related documentation. Draws a solid polygon of any number of points, convex or concave. Unlike [method draw_colored_polygon], each point's color can be changed individually. See also [method draw_polyline] and [method draw_polyline_colors]. Draws interconnected line segments with a uniform [param color] and [param width] and optional antialiasing (supported only for positive [param width]). When drawing large amounts of lines, this is faster than using individual [method draw_line] calls. To draw disconnected lines, use [method draw_multiline] instead. See also [method draw_polygon]. If [param width] is negative, the polyline is drawn using [constant RenderingServer.PRIMITIVE_LINE_STRIP]. This means that when the CanvasItem is scaled, the polyline will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. Draws interconnected line segments with a uniform [param width] and segment-by-segment coloring, and optional antialiasing (supported only for positive [param width]). Colors assigned to line segments match by index between [param points] and [param colors]. When drawing large amounts of lines, this is faster than using individual [method draw_line] calls. To draw disconnected lines, use [method draw_multiline_colors] instead. See also [method draw_polygon]. If [param width] is negative, then the polyline is drawn using [constant RenderingServer.PRIMITIVE_LINE_STRIP]. This means that when the CanvasItem is scaled, the polyline will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. Draws a custom primitive. 1 point for a point, 2 points for a line, 3 points for a triangle, and 4 points for a quad. If 0 points or more than 4 points are specified, nothing will be drawn and an error message will be printed. See also [method draw_line], [method draw_polyline], [method draw_polygon], and [method draw_rect]. Draws a rectangle. If [param filled] is [code]true[/code], the rectangle will be filled with the [param color] specified. If [param filled] is [code]false[/code], the rectangle will be drawn as a stroke with the [param color] and [param width] specified. If [param width] is negative, then two-point primitives will be drawn instead of a four-point ones. This means that when the CanvasItem is scaled, the lines will remain thin. If this behavior is not desired, then pass a positive [param width] like [code]1.0[/code]. [b]Note:[/b] [param width] is only effective if [param filled] is [code]false[/code]. [b]Note:[/b] Unfilled rectangles drawn with a negative [param width] may not display perfectly. For example, corners may be missing or brighter due to overlapping lines (for a translucent [param color]). Sets a custom transform for drawing via components. Anything drawn afterwards will be transformed by this. Sets a custom transform for drawing via matrix. Anything drawn afterwards will be transformed by this. Draws [param text] using the specified [param font] at the [param pos] (bottom-left corner using the baseline of the font). The text will have its color multiplied by [param modulate]. If [param width] is greater than or equal to 0, the text will be clipped if it exceeds the specified width. [b]Example using the default project font:[/b] [codeblocks] [gdscript] # If using this method in a script that redraws constantly, move the # `default_font` declaration to a member variable assigned in `_ready()` # so the Control is only created once. var default_font = ThemeDB.fallback_font var default_font_size = ThemeDB.fallback_font_size draw_string(default_font, Vector2(64, 64), "Hello world", HORIZONTAL_ALIGNMENT_LEFT, -1, default_font_size) [/gdscript] [csharp] // If using this method in a script that redraws constantly, move the // `default_font` declaration to a member variable assigned in `_Ready()` // so the Control is only created once. Font defaultFont = ThemeDB.FallbackFont; int defaultFontSize = ThemeDB.FallbackFontSize; DrawString(defaultFont, new Vector2(64, 64), "Hello world", HORIZONTAL_ALIGNMENT_LEFT, -1, defaultFontSize); [/csharp] [/codeblocks] See also [method Font.draw_string]. Draws [param text] outline using the specified [param font] at the [param pos] (bottom-left corner using the baseline of the font). The text will have its color multiplied by [param modulate]. If [param width] is greater than or equal to 0, the text will be clipped if it exceeds the specified width. Draws a styled rectangle. Draws a texture at a given position. Draws a textured rectangle at a given position, optionally modulated by a color. If [param transpose] is [code]true[/code], the texture will have its X and Y coordinates swapped. Draws a textured rectangle region at a given position, optionally modulated by a color. If [param transpose] is [code]true[/code], the texture will have its X and Y coordinates swapped. Forces the transform to update. Transform changes in physics are not instant for performance reasons. Transforms are accumulated and then set. Use this if you need an up-to-date transform when doing physics operations. Returns the [RID] of the [World2D] canvas where this item is in. Returns the canvas item RID used by [RenderingServer] for this item. Returns the transform from the coordinate system of the canvas, this item is in, to the [Viewport]s coordinate system. Returns the mouse's position in the [CanvasLayer] that this [CanvasItem] is in using the coordinate system of the [CanvasLayer]. Returns the global transform matrix of this item, i.e. the combined transform up to the topmost [CanvasItem] node. The topmost item is a [CanvasItem] that either has no parent, has non-[CanvasItem] parent or it has [member top_level] enabled. Returns the transform from the local coordinate system of this [CanvasItem] to the [Viewport]s coordinate system. Returns the mouse's position in this [CanvasItem] using the local coordinate system of this [CanvasItem]. Returns the transform of this [CanvasItem] in global screen coordinates (i.e. taking window position into account). Mostly useful for editor plugins. Equals to [method get_global_transform] if the window is embedded (see [member Viewport.gui_embed_subwindows]). Returns the transform matrix of this item. Returns the viewport's boundaries as a [Rect2]. Returns the transform from the coordinate system of the canvas, this item is in, to the [Viewport]s embedders coordinate system. Returns an individual bit on the rendering visibility layer. Returns the [World2D] where this item is in. Hide the [CanvasItem] if it's currently visible. This is equivalent to setting [member visible] to [code]false[/code]. Returns [code]true[/code] if local transform notifications are communicated to children. Returns [code]true[/code] if global transform notifications are communicated to children. Returns [code]true[/code] if the node is present in the [SceneTree], its [member visible] property is [code]true[/code] and all its antecedents are also visible. If any antecedent is hidden, this node will not be visible in the scene tree, and is consequently not drawn (see [method _draw]). Assigns [param screen_point] as this node's new local transform. Transformations issued by [param event]'s inputs are applied in local space instead of global space. Moves this node to display on top of its siblings. Internally, the node is moved to the bottom of parent's children list. The method has no effect on nodes without a parent. Queues the [CanvasItem] to redraw. During idle time, if [CanvasItem] is visible, [constant NOTIFICATION_DRAW] is sent and [method _draw] is called. This only occurs [b]once[/b] per frame, even if this method has been called multiple times. If [param enable] is [code]true[/code], this node will receive [constant NOTIFICATION_LOCAL_TRANSFORM_CHANGED] when its local transform changes. If [param enable] is [code]true[/code], this node will receive [constant NOTIFICATION_TRANSFORM_CHANGED] when its global transform changes. Set/clear individual bits on the rendering visibility layer. This simplifies editing this [CanvasItem]'s visibility layer. Show the [CanvasItem] if it's currently hidden. This is equivalent to setting [member visible] to [code]true[/code]. For controls that inherit [Popup], the correct way to make them visible is to call one of the multiple [code]popup*()[/code] functions instead. Allows the current node to clip children nodes, essentially acting as a mask. The rendering layers in which this [CanvasItem] responds to [Light2D] nodes. The material applied to textures on this [CanvasItem]. The color applied to textures on this [CanvasItem]. The color applied to textures on this [CanvasItem]. This is not inherited by children [CanvasItem]s. If [code]true[/code], the object draws behind its parent. The texture filtering mode to use on this [CanvasItem]. The texture repeating mode to use on this [CanvasItem]. If [code]true[/code], this [CanvasItem] will [i]not[/i] inherit its transform from parent [CanvasItem]s. Its draw order will also be changed to make it draw on top of other [CanvasItem]s that do not have [member top_level] set to [code]true[/code]. The [CanvasItem] will effectively act as if it was placed as a child of a bare [Node]. If [code]true[/code], the parent [CanvasItem]'s [member material] property is used as this one's material. The rendering layer in which this [CanvasItem] is rendered by [Viewport] nodes. A [Viewport] will render a [CanvasItem] if it and all its parents share a layer with the [Viewport]'s canvas cull mask. If [code]true[/code], this [CanvasItem] is drawn. The node is only visible if all of its antecedents are visible as well (in other words, [method is_visible_in_tree] must return [code]true[/code]). [b]Note:[/b] For controls that inherit [Popup], the correct way to make them visible is to call one of the multiple [code]popup*()[/code] functions instead. If [code]true[/code], child nodes with the lowest Y position are drawn before those with a higher Y position. If [code]false[/code], Y-sorting is disabled. Y-sorting only affects children that inherit from [CanvasItem]. You can nest nodes with Y-sorting. Child Y-sorted nodes are sorted in the same space as the parent Y-sort. This feature allows you to organize a scene better or divide it into multiple ones without changing your scene tree. If [code]true[/code], the node's Z index is relative to its parent's Z index. If this node's Z index is 2 and its parent's effective Z index is 3, then this node's effective Z index will be 2 + 3 = 5. Z index. Controls the order in which the nodes render. A node with a higher Z index will display in front of others. Must be between [constant RenderingServer.CANVAS_ITEM_Z_MIN] and [constant RenderingServer.CANVAS_ITEM_Z_MAX] (inclusive). [b]Note:[/b] Changing the Z index of a [Control] only affects the drawing order, not the order in which input events are handled. This can be useful to implement certain UI animations, e.g. a menu where hovered items are scaled and should overlap others. Emitted when the [CanvasItem] must redraw, [i]after[/i] the related [constant NOTIFICATION_DRAW] notification, and [i]before[/i] [method _draw] is called. [b]Note:[/b] Deferred connections do not allow drawing through the [code]draw_*[/code] methods. Emitted when becoming hidden. Emitted when the item's [Rect2] boundaries (position or size) have changed, or when an action is taking place that may have impacted these boundaries (e.g. changing [member Sprite2D.texture]). Emitted when the visibility (hidden/visible) changes. The [CanvasItem]'s global transform has changed. This notification is only received if enabled by [method set_notify_transform]. The [CanvasItem]'s local transform has changed. This notification is only received if enabled by [method set_notify_local_transform]. The [CanvasItem] is requested to draw (see [method _draw]). The [CanvasItem]'s visibility has changed. The [CanvasItem] has entered the canvas. The [CanvasItem] has exited the canvas. The [CanvasItem] will inherit the filter from its parent. The texture filter reads from the nearest pixel only. The simplest and fastest method of filtering. Useful for pixel art. The texture filter blends between the nearest four pixels. Use this for most cases where you want to avoid a pixelated style. The texture filter reads from the nearest pixel in the nearest mipmap. This is the fastest way to read from textures with mipmaps. The texture filter blends between the nearest 4 pixels and between the nearest 2 mipmaps. Use this for non-pixel art textures that may be viewed at a low scale (e.g. due to [Camera2D] zoom), as mipmaps are important to smooth out pixels that are smaller than on-screen pixels. The texture filter reads from the nearest pixel, but selects a mipmap based on the angle between the surface and the camera view. This reduces artifacts on surfaces that are almost in line with the camera. The anisotropic filtering level can be changed by adjusting [member ProjectSettings.rendering/textures/default_filters/anisotropic_filtering_level]. [b]Note:[/b] This texture filter is rarely useful in 2D projects. [constant TEXTURE_FILTER_NEAREST_WITH_MIPMAPS] is usually more appropriate. The texture filter blends between the nearest 4 pixels and selects a mipmap based on the angle between the surface and the camera view. This reduces artifacts on surfaces that are almost in line with the camera. This is the slowest of the filtering options, but results in the highest quality texturing. The anisotropic filtering level can be changed by adjusting [member ProjectSettings.rendering/textures/default_filters/anisotropic_filtering_level]. [b]Note:[/b] This texture filter is rarely useful in 2D projects. [constant TEXTURE_FILTER_LINEAR_WITH_MIPMAPS] is usually more appropriate. Represents the size of the [enum TextureFilter] enum. The [CanvasItem] will inherit the filter from its parent. Texture will not repeat. Texture will repeat normally. Texture will repeat in a 2x2 tiled mode, where elements at even positions are mirrored. Represents the size of the [enum TextureRepeat] enum. Child draws over parent and is not clipped. Parent is used for the purposes of clipping only. Child is clipped to the parent's visible area, parent is not drawn. Parent is used for clipping child, but parent is also drawn underneath child as normal before clipping child to its visible area. Represents the size of the [enum ClipChildrenMode] enum.