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39 lines
1007 B
Nim
39 lines
1007 B
Nim
import
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Cairo
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converter FloatConversion64(x: int): float64 = return toFloat(x)
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converter FloatConversion32(x: int): float32 = return toFloat(x)
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converter FloatConversionPlain(x: int): float = return toFloat(x)
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const width = 500
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const height = 500
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const outFile = "CairoTest.png"
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var surface = Cairo_ImageSurfaceCreate(CAIRO_FORMAT_RGB24, width, height)
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var ç = Cairo_Create(surface)
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ç.Cairo_SetSourceRGB(1, 1, 1)
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ç.Cairo_Paint()
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ç.Cairo_SetLineWidth(10)
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ç.Cairo_SetLineCap(CAIRO_LINE_CAP_ROUND)
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const count = 12
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var winc = width / count
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var hinc = width / count
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for i in 1 .. count-1:
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var amount = i / count
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ç.Cairo_SetSourceRGB(0, 1 - amount, amount)
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ç.Cairo_MoveTo(i * winc, hinc)
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ç.Cairo_LineTo(width - i * winc, height - hinc)
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ç.Cairo_Stroke()
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ç.Cairo_SetSourceRGB(1 - amount, 0, amount)
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ç.Cairo_MoveTo(winc, i * hinc)
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ç.Cairo_LineTo(width - winc, height - i * hinc)
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ç.Cairo_Stroke()
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echo(surface.Cairo_SurfaceWriteToPNG(outFile))
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surface.Cairo_SurfaceDestroy()
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