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Path

pub struct Path {
  commands : Array[PathCommand]
  current_x : Double
  current_y : Double
  start_x : Double
  start_y : Double
}

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Path::arc_to

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fn Path::arc_to(self : Path, cx : Double, cy : Double, r : Double, start_angle : Double, end_angle : Double, segments : Int) -> Unit

Arc from current point around center (cx, cy) with radius r, from start_angle to end_angle (radians, counter-clockwise).

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Path::close

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fn Path::close(self : Path) -> Unit

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Path::command_count

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fn Path::command_count(self : Path) -> Int

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Path::cubic_to

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fn Path::cubic_to(self : Path, cp1x : Double, cp1y : Double, cp2x : Double, cp2y : Double, x : Double, y : Double) -> Unit

Cubic bezier curve to (x, y) with control points (cp1x, cp1y) and (cp2x, cp2y).

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Path::flatten

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fn Path::flatten(self : Path, tolerance : Double) -> Array[Vec2]

Flatten all curves into line segments with the given tolerance.

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Path::line_to

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

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Path::move_to

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

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Path::new

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fn Path::new() -> Path

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Path::quad_to

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fn Path::quad_to(self : Path, cpx : Double, cpy : Double, x : Double, y : Double) -> Unit

Quadratic bezier curve to (x, y) with control point (cpx, cpy).

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PathCommand

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pub(all) enum PathCommand {
  MoveTo(Double, Double)
  LineTo(Double, Double)
  QuadTo(Double, Double, Double, Double)
  CubicTo(Double, Double, Double, Double, Double, Double)
  Close
}

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Vec2

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pub struct Vec2 {
  x : Double
  y : Double
} derive(@moonbitlang/core/debug.Debug
Debug)

impl Show for Vec2

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Vec2::add

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fn Vec2::add(self : Vec2, other : Vec2) -> Vec2

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Vec2::angle

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fn Vec2::angle(self : Vec2) -> Double

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Vec2::angle_between

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fn Vec2::angle_between(self : Vec2, other : Vec2) -> Double

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Vec2::approx_eq

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fn Vec2::approx_eq(self : Vec2, other : Vec2, epsilon : Double) -> Bool

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Vec2::clamp

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fn Vec2::clamp(self : Vec2, min : Vec2, max : Vec2) -> Vec2

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Vec2::cross

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fn Vec2::cross(self : Vec2, other : Vec2) -> Double

2D cross product (returns scalar z-component).

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Vec2::distance

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fn Vec2::distance(self : Vec2, other : Vec2) -> Double

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Vec2::distance_squared

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fn Vec2::distance_squared(self : Vec2, other : Vec2) -> Double

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Vec2::div

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fn Vec2::div(self : Vec2, other : Vec2) -> Vec2

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Vec2::dot

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fn Vec2::dot(self : Vec2, other : Vec2) -> Double

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Vec2::length

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fn Vec2::length(self : Vec2) -> Double

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Vec2::length_squared

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fn Vec2::length_squared(self : Vec2) -> Double

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Vec2::lerp

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fn Vec2::lerp(self : Vec2, other : Vec2, t : Double) -> Vec2

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Vec2::max

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fn Vec2::max(self : Vec2, other : Vec2) -> Vec2

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Vec2::min

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fn Vec2::min(self : Vec2, other : Vec2) -> Vec2

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Vec2::mul

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fn Vec2::mul(self : Vec2, other : Vec2) -> Vec2

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Vec2::negate

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fn Vec2::negate(self : Vec2) -> Vec2

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Vec2::new

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fn Vec2::new(x : Double, y : Double) -> Vec2

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Vec2::normalize

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fn Vec2::normalize(self : Vec2) -> Vec2

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Vec2::one

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fn Vec2::one() -> Vec2

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Vec2::perpendicular

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fn Vec2::perpendicular(self : Vec2) -> Vec2

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Vec2::reflect

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fn Vec2::reflect(self : Vec2, normal : Vec2) -> Vec2

Reflect vector around a normal.

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Vec2::rotate

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fn Vec2::rotate(self : Vec2, angle_rad : Double) -> Vec2

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Vec2::scale

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fn Vec2::scale(self : Vec2, s : Double) -> Vec2

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Vec2::sub

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fn Vec2::sub(self : Vec2, other : Vec2) -> Vec2

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Vec2::unit_x

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fn Vec2::unit_x() -> Vec2

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Vec2::unit_y

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fn Vec2::unit_y() -> Vec2

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Vec2::zero

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fn Vec2::zero() -> Vec2

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aabb_overlap

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fn aabb_overlap(ax : Double, ay : Double, aw : Double, ah : Double, bx : Double, by : Double, bw : Double, bh : Double) -> Bool

Check if two axis-aligned bounding boxes overlap (top-left + size form).

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aabb_overlap_center

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fn aabb_overlap_center(ax : Double, ay : Double, ahw : Double, ahh : Double, bx : Double, by : Double, bhw : Double, bhh : Double) -> Bool

Check if two axis-aligned bounding boxes overlap (center + half-size form).

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fill_path

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fn fill_path(points : Array[Vec2]) -> (Array[Double], Array[Int])

Generate fill vertices from flattened path points using fan triangulation. Assumes the polygon is convex or simple (uses fan from first vertex). Returns (vertex_data, indices) where each vertex is [x, y, u, v].

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stroke_path

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fn stroke_path(points : Array[Vec2], width : Double) -> (Array[Double], Array[Int])

Generate stroke (outline) vertices from flattened path points. Returns (vertex_data, indices) where each vertex is [x, y, u, v].

Source Files

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#Path

#Path::arc_to

#Path::close

#Path::command_count

#Path::cubic_to

#Path::flatten

#Path::line_to

#Path::move_to

#Path::new

#Path::quad_to

#PathCommand

#Vec2

#Vec2::add

#Vec2::angle

#Vec2::angle_between

#Vec2::approx_eq

#Vec2::clamp

#Vec2::cross

#Vec2::distance

#Vec2::distance_squared

#Vec2::div

#Vec2::dot

#Vec2::length

#Vec2::length_squared

#Vec2::lerp

#Vec2::max

#Vec2::min

#Vec2::mul

#Vec2::negate

#Vec2::new

#Vec2::normalize

#Vec2::one

#Vec2::perpendicular

#Vec2::reflect

#Vec2::rotate

#Vec2::scale

#Vec2::sub

#Vec2::unit_x

#Vec2::unit_y

#Vec2::zero

#aabb_overlap

#aabb_overlap_center

#fill_path

#stroke_path

Source Files

#
Path

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Path::arc_to

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Path::close

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Path::command_count

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Path::cubic_to

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Path::flatten

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Path::line_to

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Path::move_to

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Path::new

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Path::quad_to

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PathCommand

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Vec2

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Vec2::add

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Vec2::angle

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Vec2::angle_between

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Vec2::approx_eq

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Vec2::clamp

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Vec2::cross

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Vec2::distance

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Vec2::distance_squared

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Vec2::div

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Vec2::dot

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Vec2::length

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Vec2::length_squared

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Vec2::lerp

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Vec2::max

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Vec2::min

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Vec2::mul

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Vec2::negate

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Vec2::new

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Vec2::normalize

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Vec2::one

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Vec2::perpendicular

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Vec2::reflect

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Vec2::rotate

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Vec2::scale

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Vec2::sub

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Vec2::unit_x

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Vec2::unit_y

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Vec2::zero

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aabb_overlap

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aabb_overlap_center

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fill_path

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stroke_path