https://github.com/mrhdias/nim-libgd
Nim Wrapper for LibGD 2.x
https://github.com/mrhdias/nim-libgd
gd image-processing nim-lang nim-language
Last synced: 12 months ago
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Nim Wrapper for LibGD 2.x
- Host: GitHub
- URL: https://github.com/mrhdias/nim-libgd
- Owner: mrhdias
- License: mit
- Created: 2019-03-15T22:39:03.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2021-03-18T17:52:09.000Z (about 5 years ago)
- Last Synced: 2025-04-09T16:44:23.232Z (about 1 year ago)
- Topics: gd, image-processing, nim-lang, nim-language
- Language: Nim
- Size: 481 KB
- Stars: 6
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# nim-libgd
Nim Wrapper for [LibGD](https://libgd.github.io/) 2.x
Work in progress...
This library has been tested with Nim v1.4.4 [Linux: amd64]
## Example of Usage
```nim
import libgd
proc main() =
withGd imageCreate(300, 300) as img:
discard img.backgroundColor(0xffffff)
let green = img.setColor(0, 0, 255)
img.setThickness(4)
img.drawRectangle(
startCorner=[10, 10],
endCorner=[300 - 10, 300 - 10],
color=green)
let png_out = open("test.png", fmWrite)
img.writePng(png_out)
png_out.close()
main()
```
### Fractal Image from Examples
### Graph from Examples
## How to install nim-libgd with Nimble?
You need to have installed the [gd](https://libgd.github.io/) library in your system.
If you use Arch Linux, the library can be installed with: sudo pacman -S gd.
Run the [Nimble](https://github.com/nim-lang/nimble) install command: $ nimble install https://github.com/mrhdias/nim-libgd
## Functions
Work in progress...
### Drawing Functions
```nim
proc setPixel(
img: gdImagePtr,
point: array[2,int],
color: int = -1
)
proc drawLine(
img: gdImagePtr,
start_point: array[2,int],
end_point: array[2,int],
color: int = -1,
dashed: bool = false
)
proc drawRectangle(
img: gdImagePtr,
start_corner: array[2,int],
end_corner: array[2,int],
color: int,
fill: bool = false
)
proc drawArc(
img: gdImagePtr,
center: array[2,int],
axis: array[2,int],
angles: array[2,int],
color: int,
fill: bool = false,
style: int = 0
)
proc drawEllipse(
img: gdImagePtr,
center: array[2,int],
axis: array[2,int],
color: int,
fill: bool = false
)
proc drawCircle(
img: gdImagePtr,
center: array[2,int],
radius: int,
color: int = -1,
fill: bool = false
)
proc drawPolygon(
img: gdImagePtr,
points: openArray[array[0..1, int]],
color: int,
fill: bool = false,
open: bool = false
)
proc drawRegularPolygon(
img: gdImagePtr,
center: array[2,int],
sides: int,
radius: int,
start_angle: int = 0,
color: int,
fill: bool = false,
open: bool = false
)
```
### Image Filters
```nim
proc filterContrast(src: gdImagePtr, contrast: float): bool
proc filterBrightness(src: gdImagePtr, brightness: int): bool
proc filterGrayScale(src: gdImagePtr): bool
proc filterNegate(src: gdImagePtr): bool
proc filterEmboss(src: gdImagePtr): bool
proc filterGaussianBlur(src: gdImagePtr): bool
proc filterSmooth(src: gdImagePtr, weight: float): bool
proc filterEdgeDetectQuick(src: gdImagePtr): bool
proc filterSelectiveBlur(src: gdImagePtr): bool
proc filterMeanRemoval(src: gdImagePtr): bool
```