image
MoonBit image: simple image representation.
image
color
moonbit
moon add gmlewis/image@0.17.11
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0.17.11
License
Apache-2.0
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Last updated
8 days ago
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Dependencies
- gmlewis/flate0.36.11
- gmlewis/hash0.20.11
- gmlewis/io0.23.14
- gmlewis/zlib0.21.11
README#gmlewis/image
This is a simple image representation based on Go's implementation:
https://cs.opensource.google/go/go/+/refs/tags/go1.23.3:src/image/image.go
which has the copyright notice:
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.#Status
The code has been updated to support compiler:
$ moon version --all
moon 0.1.20260803 (c19f78e 2026-08-03) ~/.moon/bin/moon
moonc v0.10.6+80dc50f24 (2026-08-04) ~/.moon/bin/moonc
moonrun 0.1.20260803 (c19f78e 2026-08-03) ~/.moon/bin/moonrun
#Image
pub(open) trait Image {
fn color_model(Self) -> &Model
fn bounds(Self) -> Rectangle
fn at(Self, Int, Int) -> &Color
fn opaque_(Self) -> Bool
fn set(Self, Int, Int, &Color) -> Unit
fn sub_image(Self, Rectangle) -> &Image
fn as_ycbcr(Self) -> YCbCr?
fn raw_data(Self) -> Slice[Byte]
fn get_bytes_per_pixel(Self) -> Int
fn get_stride(Self) -> Int
fn pix_offset(Self, Int, Int) -> Int
fn color_index_at(Self, Int, Int) -> Byte
}Image is a finite rectangular grid of [color.Color] values taken from a color
model.
#RGBA64Image
RGBA64Image is an [Image] whose pixels can be converted directly to a
color.RGBA64.
#SizeError
#Alpha
Alpha is an in-memory image whose At method returns [color.Alpha] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#Alpha::new
Alpha::new returns a new [Alpha] image with the given bounds.
#Alpha16
Alpha16 is an in-memory image whose At method returns [color.Alpha16] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#Alpha16::new
Alpha16::new returns a new [Alpha16] image with the given bounds.
#Alpha16::set_alpha16
#CMYK
CMYK is an in-memory image whose At method returns [color.CMYK] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#CMYK::new
CMYK::new returns a new CMYK image with the given bounds.
#Config
#Gray
Gray is an in-memory image whose At method returns [color.Gray] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#Gray::new
Gray::new returns a new [Gray] image with the given bounds.
#Gray16
Gray16 is an in-memory image whose At method returns [color.Gray16] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#Gray16::new
Gray16::new returns a new [Gray16] image with the given bounds.
#NRGBA
NRGBA is an in-memory image whose At method returns [color.NRGBA] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#NRGBA::new
NRGBA::new returns a new [NRGBA] image with the given bounds.
#NRGBA64
NRGBA64 is an in-memory image whose At method returns [color.NRGBA64] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#NRGBA64::new
NRGBA64::new returns a new [NRGBA64] image with the given bounds.
#NRGBA64::set_nrgba64
#Paletted
Paletted is an in-memory image of Byte indices into a given palette.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#Paletted::new
Paletted::new returns a new [Paletted] image with the given width, height and
palette.
#Paletted::set_color_index
#Point
A Point is an X, Y coordinate pair. The axes increase right and down.
#Point::is_in
is_in reports whether p is in r.
#Point::mod
mod returns the point q in r such that p.X-q.X is a multiple of r's width
and p.Y-q.Y is a multiple of r's height.
#RGBA
RGBA is an in-memory image whose At method returns [color.RGBA] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#RGBA::new
RGBA::new returns a new [RGBA] image with the given bounds.
#RGBA64
RGBA64 is an in-memory image whose At method returns [color.RGBA64] values.
opaque scans the entire image and reports whether it is fully opaque.
pix_offset returns the index of the first element of pix that corresponds to
the pixel at (x, y).
#RGBA64::new
RGBA64::new returns a new [RGBA64] image with the given bounds.
#Rectangle
A Rectangle contains the points with Min.X <= X < Max.X, Min.Y <= Y < Max.Y.
It is well-formed if Min.X <= Max.X and likewise for Y. Points are always
A Rectangle is also an [Image] whose bounds are the rectangle itself. At
returns color.Opaque for points in the rectangle and color.Transparent
otherwise.
#Rectangle::add
add returns the rectangle r translated by p.
#Rectangle::canon
canon returns the canonical version of r. The returned rectangle has minimum
and maximum coordinates swapped if necessary so that it is well-formed.
#Rectangle::copy
copy makes a copy of the provided rectangle without changing it.
#Rectangle::empty
empty reports whether the rectangle contains no points.
#Rectangle::inset
inset returns the rectangle r inset by n, which may be negative. If either
of r's dimensions is less than 2*n then an empty rectangle near the center
of r will be returned.
#Rectangle::intersect
intersect returns the largest rectangle contained by both r and s. If the
two rectangles do not overlap then the zero rectangle will be returned.
#Rectangle::is_in
is_in reports whether every point in r is in s.
#Rectangle::new
Rectangle::new returns an empty (all zeros) rectangle.
#Rectangle::overlaps
overlaps reports whether r and s have a non-empty intersection.
#Rectangle::rgba64_at
rgba64_at implements the [RGBA64Image] trait.
#Rectangle::size
size returns r's width and height.
#Rectangle::sub
sub returns the rectangle r translated by -p.
#Rectangle::to_string
to_string returns a string representation of r like "(3,4)-(6,5)".
#YCbCr
pub(all) struct YCbCr {
y : Slice[Byte]
cb : Slice[Byte]
cr : Slice[Byte]
y_stride : Int
c_stride : Int
subsampling : YCbCrSubsampling
rect : Rectangle
}YCbCr is an in-memory image of Y'CbCr colors.
#YCbCrSubsampling
pub(all) enum YCbCrSubsampling {
YCbCrSubsampling444
YCbCrSubsampling422
YCbCrSubsampling420
YCbCrSubsampling440
YCbCrSubsampling411
YCbCrSubsampling410
} derive(Eq)YCbCrSubsampling represents the chroma subsampling ratio.
#add2_non_neg
fn add2_non_neg(x : Int, y : Int) -> Intadd2_non_neg returns (x + y), unless at least one argument is negative or if
the computation overflows the int type, in which case it returns -1.
#mul3_non_neg
fn mul3_non_neg(x : Int, y : Int, z : Int) -> Intmul3_non_neg returns (x * y * z), unless at least one argument is negative or
if the computation overflows the int type, in which case it returns -1.
MoonBit image: simple image representation.
imagecolormoonbit
0.17.11
Apache-2.0
Updated 8 days ago
8K downloadsDependencies
- gmlewis/flate0.36.11
- gmlewis/hash0.20.11
- gmlewis/io0.23.14
- gmlewis/zlib0.21.11