71 lines
1.9 KiB
Nim
71 lines
1.9 KiB
Nim
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import pixie, wNim/[wApp, wFrame, wPaintDC, wImage]
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let
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w = 256
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h = 256
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var
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screen = newImage(w, h)
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ctx = newContext(screen)
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frameCount = 0
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image = Image(w, h)
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app = App()
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frame = Frame()
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proc draw() =
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# draw shiny sphere on gradient background
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var linerGradient = Paint(kind: pkGradientLinear)
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linerGradient.gradientHandlePositions.add(vec2(0, 0))
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linerGradient.gradientHandlePositions.add(vec2(0, 256))
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linerGradient.gradientStops.add(
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ColorStop(color: rgbx(0, 0, 0, 255), position: 0))
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linerGradient.gradientStops.add(
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ColorStop(color: rgbx(255, 255, 255, 255), position: 1))
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ctx.fillStyle = linerGradient
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ctx.fillRect(0, 0, 256, 256)
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var radialGradient = Paint(kind: pkGradientRadial)
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radialGradient.gradientHandlePositions.add(vec2(128, 128))
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radialGradient.gradientHandlePositions.add(vec2(256, 128))
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radialGradient.gradientHandlePositions.add(vec2(128, 256))
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radialGradient.gradientStops.add(
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ColorStop(color: rgbx(255, 255, 255, 255), position: 0))
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radialGradient.gradientStops.add(
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ColorStop(color: rgbx(0, 0, 0, 255), position: 1))
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ctx.fillStyle = radialGradient
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ctx.fillCircle(vec2(128.0, 128.0 + sin(float(frameCount)/10.0) * 20), 76.8)
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inc frameCount
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proc render() =
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proc GdipCreateBitmapFromScan0(width: cint, height: cint, stride: cint,
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format: cint, scan0: pointer, bitmap: pointer): cint
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{.stdcall, discardable, dynlib: "gdiplus", importc.}
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proc GdipDisposeImage(image: pointer): cint
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{.stdcall, discardable, dynlib: "gdiplus", importc.}
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const PixelFormat32bppARGB = 2498570
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GdipDisposeImage(image.mGdipBmp)
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GdipCreateBitmapFromScan0(cint w, cint h, cint w * 4,
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PixelFormat32bppARGB, ctx.image.data[0].addr, addr image.mGdipBmp)
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frame.clientSize = (w, h)
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frame.startTimer(0.01)
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frame.wEvent_Timer do ():
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draw()
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render()
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frame.refresh(false)
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frame.wEvent_Paint do ():
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var dc = PaintDC(frame)
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dc.drawImage(image)
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frame.show()
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app.mainLoop()
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