rm forward declare
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1 changed files with 52 additions and 55 deletions
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@ -227,9 +227,6 @@ proc toStraightAlpha*(image: Image) =
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when defined(release):
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{.pop.}
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proc draw*(a, b: Image, mat: Mat3, blendMode = bmNormal)
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proc draw*(a, b: Image, pos = vec2(0, 0), blendMode = bmNormal) {.inline.}
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proc invert*(image: Image) =
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## Inverts all of the colors and alpha.
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var i: int
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@ -266,16 +263,6 @@ proc getRgbaSmooth*(image: Image, x, y: float32): ColorRGBA {.inline.} =
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finalMix.toStraightAlpha()
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proc resize*(srcImage: Image, width, height: int): Image =
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result = newImage(width, height)
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result.draw(
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srcImage,
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scale(vec2(
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(width + 1).float / srcImage.width.float,
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(height + 1).float / srcImage.height.float
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))
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)
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proc blur*(image: Image, radius: float32) =
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## Applies Gaussian blur to the image given a radius.
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let radius = round(radius).int
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@ -374,47 +361,6 @@ proc blurAlpha*(image: Image, radius: float32) =
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alpha += c2.a.float32 * a
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image.setRgbaUnsafe(x, y, rgba(0, 0, 0, alpha.uint8))
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proc shift*(image: Image, offset: Vec2) =
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## Shifts the image by offset.
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if offset != vec2(0, 0):
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let copy = image.copy() # Copy to read from.
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image.fill(rgba(0, 0, 0, 0)) # Reset this for being drawn to.
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image.draw(copy, offset) # Draw copy into image.
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proc spread*(image: Image, spread: float32) =
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## Grows the image as a mask by spread.
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let
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copy = image.copy()
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spread = round(spread).int
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assert spread > 0
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for y in 0 ..< image.height:
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for x in 0 ..< image.width:
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var maxAlpha = 0.uint8
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block blurBox:
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for bx in -spread .. spread:
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for by in -spread .. spread:
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let alpha = copy[x + bx, y + by].a
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if alpha > maxAlpha:
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maxAlpha = alpha
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if maxAlpha == 255:
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break blurBox
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image[x, y] = rgba(0, 0, 0, maxAlpha)
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proc shadow*(
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mask: Image, offset: Vec2, spread, blur: float32, color: ColorRGBA
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): Image =
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## Create a shadow of the image with the offset, spread and blur.
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var shadow = mask
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if offset != vec2(0, 0):
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shadow.shift(offset)
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if spread > 0:
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shadow.spread(spread)
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if blur > 0:
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shadow.blurAlpha(blur)
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result = newImage(mask.width, mask.height)
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result.fill(color)
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result.draw(shadow, blendMode = bmMask)
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proc applyOpacity*(image: Image, opacity: float32) =
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## Multiplies alpha of the image by opacity.
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let op = (255 * opacity).uint32
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@ -510,7 +456,7 @@ proc drawUber(
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if a.width - xMax > 0:
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zeroMem(a.data[a.dataIndex(xMax, y)].addr, 4 * (a.width - xMax))
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proc draw*(a, b: Image, mat: Mat3, blendMode: BlendMode) =
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proc draw*(a, b: Image, mat: Mat3, blendMode = bmNormal) =
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## Draws one image onto another using matrix with color blending.
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let
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@ -555,3 +501,54 @@ proc draw*(a, b: Image, mat: Mat3, blendMode: BlendMode) =
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proc draw*(a, b: Image, pos = vec2(0, 0), blendMode = bmNormal) {.inline.} =
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a.draw(b, translate(pos), blendMode)
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proc resize*(srcImage: Image, width, height: int): Image =
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result = newImage(width, height)
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result.draw(
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srcImage,
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scale(vec2(
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(width + 1).float / srcImage.width.float,
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(height + 1).float / srcImage.height.float
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))
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)
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proc shift*(image: Image, offset: Vec2) =
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## Shifts the image by offset.
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if offset != vec2(0, 0):
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let copy = image.copy() # Copy to read from.
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image.fill(rgba(0, 0, 0, 0)) # Reset this for being drawn to.
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image.draw(copy, offset) # Draw copy into image.
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proc spread*(image: Image, spread: float32) =
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## Grows the image as a mask by spread.
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let
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copy = image.copy()
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spread = round(spread).int
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assert spread > 0
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for y in 0 ..< image.height:
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for x in 0 ..< image.width:
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var maxAlpha = 0.uint8
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block blurBox:
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for bx in -spread .. spread:
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for by in -spread .. spread:
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let alpha = copy[x + bx, y + by].a
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if alpha > maxAlpha:
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maxAlpha = alpha
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if maxAlpha == 255:
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break blurBox
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image[x, y] = rgba(0, 0, 0, maxAlpha)
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proc shadow*(
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mask: Image, offset: Vec2, spread, blur: float32, color: ColorRGBA
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): Image =
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## Create a shadow of the image with the offset, spread and blur.
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var shadow = mask
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if offset != vec2(0, 0):
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shadow.shift(offset)
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if spread > 0:
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shadow.spread(spread)
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if blur > 0:
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shadow.blurAlpha(blur)
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result = newImage(mask.width, mask.height)
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result.fill(color)
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result.draw(shadow, blendMode = bmMask)
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