Function References

img_new = draw(img, drawable, color)
img_new = draw(img, [drawable], [color])

Draws the drawable object on a copy of image img using color color. Can also draw multiple Drawable objects when passed as a AbstractVector{Drawable} with corresponding colors in [color]

draw(img::AbstractArray{T,2}, verts::Vector{CartesianIndex{2}}, f::AbstractPolyFillAlgorithm; closed::Bool)

Draw on img using algorithm f.

Output

When img is specified, a copy of img is made and changes are made on it and returned.

Example

Just simply pass an algorithm with parameters, with image and vertices of polygon

using ImageDraw

img = zeros(RGB, 7, 7)
expected = copy(img)
expected[2:6, 2:6] .= RGB{N0f8}(1)

verts = [CartesianIndex(2, 2), CartesianIndex(2, 6), CartesianIndex(6, 6), CartesianIndex(6, 2), CartesianIndex(2,2)]

res = draw(img, verts, BoundaryFill(4, 4; fill_value = RGB(1), boundary_value = RGB(1)); closed = true)

img = draw!(img, drawable, color)
img = draw!(img, drawable)

Draws drawable on img using color color which defaults to oneunit(eltype(img))

img = draw!(img, [drawable], [color])
img = draw!(img, [drawable] ,color)
img = draw!(img, [drawable])

Draws all objects in [drawable] in the given order on img using corresponding colors from [color] which defaults to oneunit(eltype(img)) If only a single color color is specified then all objects will be colored with that color.

draw!(img::AbstractArray{T,2}, verts::Vector{CartesianIndex{2}}, f::AbstractPolyFillAlgorithm; closed::Bool)

Draw on img using algorithm f.

Output

When img is specified, changes are made on img and returned.

Example

Just simply pass an algorithm with parameters, with image and vertices of polygon

using ImageDraw

img = zeros(RGB, 7, 7)
expected = copy(img)
expected[2:6, 2:6] .= RGB{N0f8}(1)

verts = [CartesianIndex(2, 2), CartesianIndex(2, 6), CartesianIndex(6, 6), CartesianIndex(6, 2), CartesianIndex(2,2)]

draw!(img, verts, BoundaryFill(4, 4; fill_value = RGB(1), boundary_value = RGB(1)); closed = true)

res = bresenham(img, y0, x0, y1, x1, color)

Method to generate a line profile from (x0,y0) to (x1,y1) of a 2d image using Bresenham's algorithm.

res = xiaolin_wu(img, x0, y0, x1, x2, color)

Method to generate a line profile from (x0,y0) to (x1,y1) of a 2d image using Xiaolin Wu line algorithm.