sayoi7799/moon_vegalite/scene

sayoi7799/moon_vegalite/scene does not have a README file

SceneError

pub(all) suberror SceneError {
  SceneError(String)
}

BoundCtx

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pub struct BoundCtx {
  bounds : Bounds
  rot : Double
  ma : Double
  mb : Double
  mc : Double
  md : Double
  lx : Double
  ly : Double
}

vega-scenegraph's boundContext: accumulates the extent of a path, optionally rotated by deg degrees about the origin.

BoundCtx::arc

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fn BoundCtx::arc(self : BoundCtx, cx : Double, cy : Double, r : Double, sa0 : Double, ea0 : Double, ccw0 : Bool) -> Unit

BoundCtx::bezier_to

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fn BoundCtx::bezier_to(self : BoundCtx, x1 : Double, y1 : Double, x2 : Double, y2 : Double, x3 : Double, y3 : Double) -> Unit

BoundCtx::close_path

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fn BoundCtx::close_path(_self : BoundCtx) -> Unit

BoundCtx::line_to

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fn BoundCtx::line_to(self : BoundCtx, x : Double, y : Double) -> Unit

BoundCtx::move_to

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fn BoundCtx::move_to(self : BoundCtx, x : Double, y : Double) -> Unit

BoundCtx::new

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fn BoundCtx::new(bounds : Bounds, deg? : Double) -> BoundCtx

BoundCtx::quad_to

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fn BoundCtx::quad_to(self : BoundCtx, x1 : Double, y1 : Double, x2 : Double, y2 : Double) -> Unit

BoundCtx::rect

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fn BoundCtx::rect(self : BoundCtx, x : Double, y : Double, w : Double, h : Double) -> Unit

Bounds

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pub(all) struct Bounds {
  x1 : Double
  y1 : Double
  x2 : Double
  y2 : Double
}

Bounds::add

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fn Bounds::add(self : Bounds, x : Double, y : Double) -> Bounds

Bounds::clear

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fn Bounds::clear(self : Bounds) -> Bounds

Bounds::copy

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fn Bounds::copy(self : Bounds) -> Bounds

Bounds::encloses

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fn Bounds::encloses(self : Bounds, b : Bounds) -> Bool

Bounds::expand

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fn Bounds::expand(self : Bounds, d : Double) -> Bounds

Bounds::height

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fn Bounds::height(self : Bounds) -> Double

Bounds::intersect

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fn Bounds::intersect(self : Bounds, b : Bounds) -> Bounds

Bounds::is_empty

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fn Bounds::is_empty(self : Bounds) -> Bool

Bounds::new

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fn Bounds::new() -> Bounds

An empty box (inverted infinite extent).

Bounds::rotate

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fn Bounds::rotate(self : Bounds, angle : Double, x : Double, y : Double) -> Bounds

Bounds::rotated_points

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fn Bounds::rotated_points(self : Bounds, angle : Double, x : Double, y : Double) -> Array[Double]

The four corners of the box rotated by angle radians about (x, y), as [x, y] pairs flattened into eight numbers.

Bounds::set

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fn Bounds::set(self : Bounds, x1 : Double, y1 : Double, x2 : Double, y2 : Double) -> Bounds

Bounds::translate

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fn Bounds::translate(self : Bounds, dx : Double, dy : Double) -> Bounds

Bounds::union

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fn Bounds::union(self : Bounds, b : Bounds) -> Bounds

Bounds::width

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fn Bounds::width(self : Bounds) -> Double

Ctx

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pub enum Ctx {
  Buf(PathBuf)
  Bound(BoundCtx)
}

Where a shape draws: SVG path text or a bounding box.

Ctx::arc

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fn Ctx::arc(self : Ctx, x : Double, y : Double, r : Double, a0 : Double, a1 : Double, ccw : Bool) -> Unit

Ctx::bezier_to

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fn Ctx::bezier_to(self : Ctx, x1 : Double, y1 : Double, x2 : Double, y2 : Double, x : Double, y : Double) -> Unit

Ctx::close_path

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fn Ctx::close_path(self : Ctx) -> Unit

Ctx::line_to

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fn Ctx::line_to(self : Ctx, x : Double, y : Double) -> Unit

Ctx::move_to

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fn Ctx::move_to(self : Ctx, x : Double, y : Double) -> Unit

Ctx::quad_to

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fn Ctx::quad_to(self : Ctx, x1 : Double, y1 : Double, x : Double, y : Double) -> Unit

Ctx::rect

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fn Ctx::rect(self : Ctx, x : Double, y : Double, w : Double, h : Double) -> Unit

Curve

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pub struct Curve {
  kind : CurveKind
  line : Double
  point : Int
  x0 : Double
  y0 : Double
  x1 : Double
  y1 : Double
  t0 : Double
  t : Double
}

Mutable curve state, mirroring d3's curve objects.

Curve::area_end

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fn Curve::area_end(self : Curve) -> Unit

Curve::area_start

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fn Curve::area_start(self : Curve) -> Unit

Curve::line_end

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fn Curve::line_end(self : Curve, ctx : Ctx) -> Unit

Curve::line_start

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fn Curve::line_start(self : Curve, _ctx : Ctx) -> Unit

Curve::new

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fn Curve::new(kind : CurveKind) -> Curve

Curve::point

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fn Curve::point(self : Curve, ctx : Ctx, x0 : Double, y0 : Double) -> Unit

CurveKind

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pub(all) enum CurveKind {
  Linear
  Step
  StepBefore
  StepAfter
  MonotoneX
  MonotoneY
}

Item

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pub(all) struct Item {
  props : Map[String, @sayoi7799/moon_vegalite/value.Value
Value]
  bounds : Bounds
  children : Array[Mark]
}

Item::get

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fn Item::get(self : Item, key : String) -> @sayoi7799/moon_vegalite/value.Value
Value

Item::has

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fn Item::has(self : Item, key : String) -> Bool

Item::has_corner_radius

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fn Item::has_corner_radius(self : Item) -> Bool

Item::new

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fn Item::new(props? : Map[String, @sayoi7799/moon_vegalite/value.Value
Value]) -> Item

Item::num0

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fn Item::num0(self : Item, key : String) -> Double

item[key] || 0

Item::num_or

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fn Item::num_or(self : Item, key : String, default : Double) -> Double

item[key] != null ? +item[key] : default

Item::opt_num

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fn Item::opt_num(self : Item, key : String) -> Double?

The value when present and not null, as a number.

Item::set

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fn Item::set(self : Item, key : String, v : @sayoi7799/moon_vegalite/value.Value
Value) -> Unit

Item::set_num

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fn Item::set_num(self : Item, key : String, x : Double) -> Unit

Item::set_str

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fn Item::set_str(self : Item, key : String, s : String) -> Unit

Item::str

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fn Item::str(self : Item, key : String) -> String?

A string property, None when missing or null.

Item::truthy

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fn Item::truthy(self : Item, key : String) -> Bool

JavaScript truthiness of a property.

Mark

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pub(all) struct Mark {
  marktype : MarkType
  name : String?
  role : String?
  interactive : Bool
  clip : Bool
  zindex : Int?
  aria : Bool
  items : Array[Item]
  bounds : Bounds
}

Mark::new

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fn Mark::new(marktype : MarkType, name? : String, role? : String, interactive? : Bool, clip? : Bool, zindex? : Int, aria? : Bool, items? : Array[Item]) -> Mark

MarkType

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pub(all) enum MarkType {
  Group
  Rect
  Rule
  Text
  Symbol
  Line
  Area
}

MarkType::from_name

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fn MarkType::from_name(name : String) -> MarkType?

MarkType::is_nested

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fn MarkType::is_nested(self : MarkType) -> Bool

Line and area marks render all their items as one path.

MarkType::name

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fn MarkType::name(self : MarkType) -> String

PathBuf

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pub struct PathBuf {
  out : StringBuilder
  digits : Int?
  x0 : Double
  y0 : Double
  x1 : Double
  y1 : Double
  started : Bool
}

d3-path's Path: appends SVG path commands; with digits coordinates are rounded to that many decimals (d3-shape's default is 3, vega's own rectangle shape uses full precision).

PathBuf::arc

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fn PathBuf::arc(self : PathBuf, x : Double, y : Double, r : Double, a0 : Double, a1 : Double, ccw : Bool) -> Unit

PathBuf::bezier_to

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fn PathBuf::bezier_to(self : PathBuf, x1 : Double, y1 : Double, x2 : Double, y2 : Double, x : Double, y : Double) -> Unit

PathBuf::close_path

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fn PathBuf::close_path(self : PathBuf) -> Unit

PathBuf::line_to

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fn PathBuf::line_to(self : PathBuf, x : Double, y : Double) -> Unit

PathBuf::move_to

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fn PathBuf::move_to(self : PathBuf, x : Double, y : Double) -> Unit

PathBuf::new

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fn PathBuf::new(digits? : Int) -> PathBuf

PathBuf::quad_to

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fn PathBuf::quad_to(self : PathBuf, x1 : Double, y1 : Double, x : Double, y : Double) -> Unit

PathBuf::rect

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fn PathBuf::rect(self : PathBuf, x : Double, y : Double, w : Double, h : Double) -> Unit

PathBuf::to_string

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fn PathBuf::to_string(self : PathBuf) -> String

TextLines

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pub enum TextLines {
  Single(@sayoi7799/moon_vegalite/value.Value
Value)
  Lines(Array[@sayoi7799/moon_vegalite/value.Value
Value])
}

The text content as one value or several lines (vega textLines).

area_path

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fn area_path(items : Array[Item]) -> String raise SceneError

baseline_offset

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fn baseline_offset(item : Item) -> Double

vega offset(item): baseline correction in pixels.

bound_group

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fn bound_group(bounds : Bounds, group : Item) -> Bounds

bound_mark

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fn bound_mark(mark : Mark) -> Unit raise SceneError

Compute bounds bottom-up for a mark and everything below it.

bound_stroke

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fn bound_stroke(bounds : Bounds, item : Item) -> Bounds

vega boundStroke: grow by the stroke width when the item is stroked.

curve_kind

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fn curve_kind(name : String, orient : String) -> CurveKind?

Look up an interpolation method by its Vega name.

draw_area

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fn draw_area(ctx : Ctx, items : Array[Item]) -> Unit raise SceneError

d3-shape area(): vertical areas span y to y + height, horizontal areas span x to x + width.

draw_item_symbol

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fn draw_item_symbol(ctx : Ctx, item : Item) -> Unit raise SceneError

The symbol of one item, drawn at the origin (d3-shape symbol() with type(item.shape || 'circle') and size(item.size ?? 64)).

draw_line

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fn draw_line(ctx : Ctx, items : Array[Item]) -> Unit raise SceneError

d3-shape line() over the items (x, y, defined).

draw_rect

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fn draw_rect(ctx : Ctx, item : Item, x0? : Double, y0? : Double) -> Unit

vega's rectangle shape: a plain rectangle or one with rounded corners.

draw_symbol

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fn draw_symbol(ctx : Ctx, shape : String, size : Double) -> Unit raise SceneError

The symbol shapes of vega-scenegraph (path/symbols.js), drawn at the origin.

font_size

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fn font_size(item : Item) -> Double

line_height

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fn line_height(item : Item) -> Double

line_path

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fn line_path(items : Array[Item]) -> String raise SceneError

mark_from_json

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fn mark_from_json(j : Json) -> Mark raise SceneError

Build a mark (and everything below it) from JSON.

mark_to_json

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fn mark_to_json(mark : Mark, with_bounds? : Bool) -> Json

Serialise a mark. With with_bounds, every mark and item carries its bounding box under bounds.

multi_line_offset

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fn multi_line_offset(item : Item) -> Double

vega multiLineOffset(item): the extra height of a multi-line text.

rect_path

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fn rect_path(item : Item, x? : Double, y? : Double) -> String

d of a rect item (full precision), optionally offset.

symbol_path

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fn symbol_path(item : Item) -> String raise SceneError

d of a symbol item, centred on the origin (3 decimals, as d3-shape).

text_lines

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fn text_lines(item : Item) -> TextLines

text_value

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fn text_value(item : Item, line : @sayoi7799/moon_vegalite/value.Value
Value) -> String

vega textValue(item, line): trimmed text, truncated to limit.

text_width

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fn text_width(item : Item, line : @sayoi7799/moon_vegalite/value.Value
Value) -> Double

Width of a single line, as textMetrics.width (estimate).

Source Files

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#SceneError

#BoundCtx

#BoundCtx::arc

#BoundCtx::bezier_to

#BoundCtx::close_path

#BoundCtx::line_to

#BoundCtx::move_to

#BoundCtx::new

#BoundCtx::quad_to

#BoundCtx::rect

#Bounds

#Bounds::add

#Bounds::clear

#Bounds::copy

#Bounds::encloses

#Bounds::expand

#Bounds::height

#Bounds::intersect

#Bounds::is_empty

#Bounds::new

#Bounds::rotate

#Bounds::rotated_points

#Bounds::set

#Bounds::translate

#Bounds::union

#Bounds::width

#Ctx

#Ctx::arc

#Ctx::bezier_to

#Ctx::close_path

#Ctx::line_to

#Ctx::move_to

#Ctx::quad_to

#Ctx::rect

#Curve

#Curve::area_end

#Curve::area_start

#Curve::line_end

#Curve::line_start

#Curve::new

#Curve::point

#CurveKind

#Item

#Item::get

#Item::has

#Item::has_corner_radius

#Item::new

#Item::num0

#Item::num_or

#Item::opt_num

#Item::set

#Item::set_num

#Item::set_str

#Item::str

#Item::truthy

#Mark

#Mark::new

#MarkType

#MarkType::from_name

#MarkType::is_nested

#MarkType::name

#PathBuf

#PathBuf::arc

#PathBuf::bezier_to

#PathBuf::close_path

#PathBuf::line_to

#PathBuf::move_to

#PathBuf::new

#PathBuf::quad_to

#PathBuf::rect

#PathBuf::to_string

#TextLines

#area_path

#baseline_offset

#bound_group

#bound_mark

#bound_stroke

#curve_kind

#draw_area

#draw_item_symbol

SceneError

BoundCtx

BoundCtx::arc

BoundCtx::bezier_to

BoundCtx::close_path

BoundCtx::line_to

BoundCtx::move_to

BoundCtx::new

BoundCtx::quad_to

BoundCtx::rect

Bounds

Bounds::add

Bounds::clear

Bounds::copy

Bounds::encloses

Bounds::expand

Bounds::height

Bounds::intersect

Bounds::is_empty

Bounds::new

Bounds::rotate

Bounds::rotated_points

Bounds::set

Bounds::translate

Bounds::union

Bounds::width

Ctx

Ctx::arc

Ctx::bezier_to

Ctx::close_path

Ctx::line_to

Ctx::move_to

Ctx::quad_to

Ctx::rect

Curve

Curve::area_end

Curve::area_start

Curve::line_end

Curve::line_start

Curve::new

Curve::point

CurveKind

Item

Item::get

Item::has

Item::has_corner_radius

Item::new

Item::num0

Item::num_or

Item::opt_num

Item::set

Item::set_num

Item::set_str

Item::str

Item::truthy

Mark

Mark::new

MarkType

MarkType::from_name

MarkType::is_nested

MarkType::name

PathBuf

PathBuf::arc

PathBuf::bezier_to

PathBuf::close_path

PathBuf::line_to

PathBuf::move_to

PathBuf::new

PathBuf::quad_to

PathBuf::rect

PathBuf::to_string

TextLines

area_path

baseline_offset

bound_group

bound_mark

bound_stroke

curve_kind

draw_area

draw_item_symbol