49 lines
1.4 KiB
Nim
49 lines
1.4 KiB
Nim
## Public interface to you library.
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import pixie/images, pixie/masks, pixie/paths, pixie/common, pixie/blends,
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pixie/fileformats/bmp, pixie/fileformats/png, flatty/binny
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export images, masks, paths, PixieError, blends
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type
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FileFormat* = enum
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ffPng, ffBmp
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proc toMask*(image: Image): Mask =
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## Converts an Image to a Mask.
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result = newMask(image.width, image.height)
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for i in 0 ..< image.data.len:
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result.data[i] = image.data[i].a
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proc toImage*(mask: Mask): Image =
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## Converts a Mask to Image.
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result = newImage(mask.width, mask.height)
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for i in 0 ..< mask.data.len:
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result.data[i].a = mask.data[i]
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proc decodeImage*(data: string | seq[uint8]): Image =
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## Loads an image from a memory.
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if data.len > 8 and cast[array[8, uint8]](data.readUint64(0)) == pngSignature:
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return decodePng(data)
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if data.len > 2 and data.readStr(0, 2) == "BM":
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return decodeBmp(data)
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raise newException(PixieError, "Unsupported image file format")
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proc readImage*(filePath: string): Image =
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## Loads an image from a file.
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decodeImage(readFile(filePath))
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proc encodeImage*(image: Image, fileFormat: FileFormat): string =
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## Encodes an image into a memory.
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case fileFormat:
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of ffPng:
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image.encodePng()
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of ffBmp:
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image.encodeBmp()
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proc writeFile*(image: Image, filePath: string, fileFormat: FileFormat) =
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## Writes an image to a file.
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writeFile(filePath, image.encodeImage(fileFormat))
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