bobzhang/vg/geometry - mooncakes.io

README
U
Box
U
Color
U
Path
U
PathSegment
U
Point
U
Transform
- ::equalArea::equal
- ::not_equalArea::not_equal
- ::to_reprArea::to_repr
- ::equalBlender::equal
- ::not_equalBlender::not_equal
- ::to_reprBlender::to_repr
- ::equalDrawCmd::equal
- ::not_equalDrawCmd::not_equal
- ::to_reprDrawCmd::to_repr
- ::axial_gradientImage::axial_gradient
- ::blendImage::blend
- ::checkerboardImage::checkerboard
- ::circleImage::circle
- ::composeImage::compose
- ::conic_gradientImage::conic_gradient
- ::const_colorImage::const_color
- ::cutImage::cut
- ::ellipseImage::ellipse
- ::emptyImage::empty
- ::evalImage::eval
- ::lineImage::line
- ::linear_gradientImage::linear_gradient
- ::of_fnImage::of_fn
- ::overImage::over
- ::polygonImage::polygon
- ::radial_gradientImage::radial_gradient
- ::rectangleImage::rectangle
- ::render_image_to_svgImage::render_image_to_svg
- ::rotateImage::rotate
- ::scaleImage::scale
- ::textImage::text
- ::tileImage::tile
- ::to_draw_listImage::to_draw_list
- ::to_jsImage::to_js
- ::to_pdfImage::to_pdf
- ::to_svgImage::to_svg
- ::transformImage::transform
- ::translate_imgImage::translate_img
- ::with_opacityImage::with_opacity
- ::equalPaint::equal
- ::not_equalPaint::not_equal
- ::to_reprPaint::to_repr
T
Primitive
- ::equalStop::equal
- ::not_equalStop::not_equal
- ::to_reprStop::to_repr
V
cut

bobzhang/vg/geometry does not have a README file

Box

pub struct Box {
  min_x : Double
  min_y : Double
  max_x : Double
  max_y : Double
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

Bounding box

Box::equal

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fn Box::equal(Box, Box) -> Bool

Box::not_equal

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fn Box::not_equal(x : Box, y : Box) -> Bool

Box::to_repr

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fn Box::to_repr(Box) -> @moonbitlang/core/debug.Repr
Repr

Path

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pub(all) struct Path(Array[PathSegment]) derive(Eq, @moonbitlang/core/debug.Debug
Debug)

A path is a sequence of segments. pub(all) so downstream packages can build a segment array in one pass instead of through the copying builders.

Path::bounds

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fn Path::bounds(self : Path) -> Box?

Get the bounding box of a path (approximate)

Path::circle

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fn Path::circle(center : Point, radius : Double) -> Path

Create a circle path (approximated with bezier curves)

Path::close_path

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fn Path::close_path(self : Path) -> Path

Close the path

Path::curve_to

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fn Path::curve_to(self : Path, cp1 : Point, cp2 : Point, end : Point) -> Path

Cubic bezier curve to a point

Path::earc_to

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fn Path::earc_to(self : Path, rx : Double, ry : Double, rotation : Double, large_arc : Bool, sweep : Bool, end : Point) -> Path

Elliptical arc to a point

Path::ellipse

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fn Path::ellipse(center : Point, rx : Double, ry : Double) -> Path

Create an ellipse path

Path::empty

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fn Path::empty() -> Path

Create an empty path

Path::equal

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fn Path::equal(Path, Path) -> Bool

Path::line_to

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fn Path::line_to(self : Path, p : Point) -> Path

Line to a point

Path::move_to

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fn Path::move_to(self : Path, p : Point) -> Path

Move to a point

Path::not_equal

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fn Path::not_equal(x : Path, y : Path) -> Bool

Path::qcurve_to

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fn Path::qcurve_to(self : Path, cp : Point, end : Point) -> Path

Quadratic bezier curve to a point

Path::rect

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fn Path::rect(x : Double, y : Double, width : Double, height : Double) -> Path

Create a rectangle path

Path::smooth_ccurve_to

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fn Path::smooth_ccurve_to(self : Path, cp2 : Point, end : Point) -> Path

Create a smooth cubic curve that connects smoothly to the previous segment

Path::smooth_qcurve_to

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fn Path::smooth_qcurve_to(self : Path, end : Point) -> Path

Create a smooth quadratic curve that connects smoothly to the previous segment

Path::to_repr

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fn Path::to_repr(Path) -> @moonbitlang/core/debug.Repr
Repr

Path::transform

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fn Path::transform(self : Path, t : Transform) -> Path

Transform a path using a transformation matrix.

Elliptical arcs are mapped exactly (new radii, rotation and sweep). When the transform is singular an arc's image is a curve folded onto a line (or a point), which no EArcTo can express; it is then emitted as line segments through the projected extreme points of the arc, which trace the same set in the same order.

PathSegment

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pub(all) enum PathSegment {
  MoveTo(Point)
  LineTo(Point)
  CurveTo(Point, Point, Point)
  QCurveTo(Point, Point)
  EArcTo(Double, Double, Double, Bool, Bool, Point)
  Close
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

Path segment types

PathSegment::equal

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fn PathSegment::equal(PathSegment, PathSegment) -> Bool

PathSegment::not_equal

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fn PathSegment::not_equal(x : PathSegment, y : PathSegment) -> Bool

PathSegment::to_repr

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fn PathSegment::to_repr(PathSegment) -> @moonbitlang/core/debug.Repr
Repr

Point

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

A 2D point in the cartesian plane

Point::Point

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fn Point::Point(x : Double, y : Double) -> Point

Create a point

Point::add

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

Add two points

Point::distance

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

Distance between two points

Point::dot

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

Dot product of two points (treated as vectors)

Point::equal

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fn Point::equal(Point, Point) -> Bool

Point::length

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

Length of a point (treated as vector from origin)

Point::lerp

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

Linear interpolation between two points

Point::normalize

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

Normalize a point (make it unit length)

Point::not_equal

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fn Point::not_equal(x : Point, y : Point) -> Bool

Point::origin

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fn Point::origin() -> Point

Origin point (0, 0)

Point::rotate

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fn Point::rotate(self : Point, angle : Double) -> Point

Rotate a point around the origin by angle (in radians)

Point::scale

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fn Point::scale(self : Point, factor : Double) -> Point

Scale a point by a scalar

Point::sub

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

Subtract two points

Point::to_repr

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fn Point::to_repr(Point) -> @moonbitlang/core/debug.Repr
Repr

Transform

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pub struct Transform {
  m11 : Double
  m12 : Double
  m21 : Double
  m22 : Double
  m31 : Double
  m32 : Double
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

2D transformation matrix

Transform::equal

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fn Transform::equal(Transform, Transform) -> Bool

Transform::not_equal

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fn Transform::not_equal(x : Transform, y : Transform) -> Bool

Transform::to_repr

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fn Transform::to_repr(Transform) -> @moonbitlang/core/debug.Repr
Repr

apply

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fn apply(t : Transform, p : Point) -> Point

Apply transformation to a point

compose_transforms

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fn compose_transforms(t1 : Transform, t2 : Transform) -> Transform

Compose two transformations: the result applies t1 first, then t2, i.e. apply(compose_transforms(t1, t2), p) == apply(t2, apply(t1, p)).

With the convention of apply (x' = m11 x + m12 y + m31, y' = m21 x + m22 y + m32) this is the matrix product t2 * t1.

determinant

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fn determinant(t : Transform) -> Double

Get the determinant of the transformation

identity

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fn identity() -> Transform

Identity transformation

invert

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fn invert(t : Transform) -> Transform?

Invert a transformation matrix

make_rotate

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fn make_rotate(angle : Double) -> Transform

Rotation transformation (angle in radians)

make_scale

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fn make_scale(sx : Double, sy : Double) -> Transform

Scale transformation

make_translate

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fn make_translate(dx : Double, dy : Double) -> Transform

Translation transformation

preserves_orientation

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fn preserves_orientation(t : Transform) -> Bool

Check if transformation preserves orientation

scale_uniform

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fn scale_uniform(s : Double) -> Transform

Uniform scale transformation

skew_x

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fn skew_x(angle : Double) -> Transform

Skew X transformation

skew_y

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fn skew_y(angle : Double) -> Transform

Skew Y transformation

Source Files

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#Box

#Box::equal

#Box::not_equal

#Box::to_repr

#Path

#Path::bounds

#Path::circle

#Path::close_path

#Path::curve_to

#Path::earc_to

#Path::ellipse

#Path::empty

#Path::equal

#Path::line_to

#Path::move_to

#Path::not_equal

#Path::qcurve_to

#Path::rect

#Path::smooth_ccurve_to

#Path::smooth_qcurve_to

#Path::to_repr

#Path::transform

#PathSegment

#PathSegment::equal

#PathSegment::not_equal

#PathSegment::to_repr

#Point

#Point::Point

#Point::add

#Point::distance

#Point::dot

#Point::equal

#Point::length

#Point::lerp

#Point::normalize

#Point::not_equal

#Point::origin

#Point::rotate

#Point::scale

#Point::sub

#Point::to_repr

#Transform

#Transform::equal

#Transform::not_equal

#Transform::to_repr

#apply

#compose_transforms

#determinant

#identity

#invert

#make_rotate

#make_scale

#make_translate

#preserves_orientation

#scale_uniform

#skew_x

#skew_y

Source Files

Box

Box::equal

Box::not_equal

Box::to_repr

Path

Path::bounds

Path::circle

Path::close_path

Path::curve_to

Path::earc_to

Path::ellipse

Path::empty

Path::equal

Path::line_to

Path::move_to

Path::not_equal

Path::qcurve_to

Path::rect

Path::smooth_ccurve_to

Path::smooth_qcurve_to

Path::to_repr

Path::transform

PathSegment

PathSegment::equal

PathSegment::not_equal

PathSegment::to_repr

Point

Point::Point

Point::add

Point::distance

Point::dot

Point::equal

Point::length

Point::lerp

Point::normalize

Point::not_equal

Point::origin

Point::rotate

Point::scale

Point::sub

Point::to_repr

Transform

Transform::equal

Transform::not_equal

Transform::to_repr

apply

compose_transforms

determinant

identity

invert

make_rotate

make_scale

make_translate

preserves_orientation

scale_uniform

skew_x

skew_y