57 lines
1.9 KiB
Nim
57 lines
1.9 KiB
Nim
import pixie, chroma, vmath, fidget/opengl/perf, pixie/fileformats/bmp
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proc inPlaceDraw*(destImage: Image, srcImage: Image, mat: Mat3, blendMode = bmNormal) =
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## Draws one image onto another using matrix with color blending.
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for y in 0 ..< destImage.width:
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for x in 0 ..< destImage.height:
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let srcPos = mat * vec2(x.float32, y.float32)
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let destRgba = destImage.getRgbaUnsafe(x, y)
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var rgba = destRgba
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var srcRgba = rgba(0, 0, 0, 0)
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if srcImage.inside(srcPos.x.floor.int, srcPos.y.floor.int):
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srcRgba = srcImage.getRgbaSmooth(srcPos.x - 0.5, srcPos.y - 0.5)
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if blendMode.hasEffect(srcRgba):
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rgba = blendMode.mix(destRgba, srcRgba)
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destImage.setRgbaUnsafe(x, y, rgba)
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proc inPlaceDraw*(destImage: Image, srcImage: Image, pos = vec2(0, 0), blendMode = bmNormal) =
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destImage.inPlaceDraw(srcImage, translate(-pos), blendMode)
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block:
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var a = newImage(100, 100)
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a.fill(rgba(255, 0, 0, 255))
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var b = newImage(100, 100)
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b.fill(rgba(0, 255, 0, 255))
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a.inPlaceDraw(b, pos=vec2(25, 25))
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writeFile("tests/images/inPlaceDraw.bmp", a.encodeBmp())
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block:
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var a = newImage(100, 100)
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a.fill(rgba(255, 0, 0, 255))
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var b = newImage(100, 100)
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b.fill(rgba(0, 255, 0, 255))
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var c = a.drawFast3(b, translate(vec2(25, 25)), bmNormal)
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writeFile("tests/images/copyDraw.bmp", c.encodeBmp())
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timeIt "inPlaceDraw":
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var tmp = 0
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for i in 0 ..< 1000:
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var a = newImage(100, 100)
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a.fill(rgba(255, 0, 0, 255))
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var b = newImage(100, 100)
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b.fill(rgba(0, 255, 0, 255))
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a.inPlaceDraw(b, pos=vec2(25, 25))
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tmp += a.width * a.height
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echo tmp
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timeIt "copyDraw":
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var tmp = 0
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for i in 0 ..< 1000:
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var a = newImage(100, 100)
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a.fill(rgba(255, 0, 0, 255))
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var b = newImage(100, 100)
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b.fill(rgba(0, 255, 0, 255))
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var c = a.drawFast3(b, translate(vec2(25, 25)), bmNormal)
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tmp += c.width * c.height
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echo tmp
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