MyouProject/pixie
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Make some procs not be in place but return a copy.

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treeform 2020-11-22 19:52:52 -08:00
parent c0bfed8446
commit b65d7611b7
1 changed files with 6 additions and 43 deletions
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49
src/pixie/images.nim
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@ -250,9 +250,6 @@ proc draw*(a: Image, b: Image, mat: Mat3, blendMode = bmNormal): Image =
proc draw*(a: Image, b: Image, pos = vec2(0, 0), blendMode = bmNormal): Image =
a.draw(b, translate(pos), blendMode)
# TODO: Make methods bellow not be in place.
proc blur*(image: Image, radius: float32): Image =
## Applies Gaussian blur to the image given a radius.
let radius = (radius).int
@ -366,8 +363,9 @@ proc shadow*(
result.fill(color.rgba)
return result.draw(shadow, blendMode = bmMask)
proc invertColor*(image: Image) =
proc invertColor*(image: Image): Image =
## Flips the image around the Y axis.
result = newImageNoInit(image.width, image.height)
for y in 0 ..< image.height:
for x in 0 ..< image.width:
var rgba = image.getRgbaUnsafe(x, y)
@ -375,49 +373,14 @@ proc invertColor*(image: Image) =
rgba.g = 255 - rgba.g
rgba.b = 255 - rgba.b
rgba.a = 255 - rgba.a
image.setRgbaUnsafe(x, y, rgba)
result.setRgbaUnsafe(x, y, rgba)
proc applyOpacity*(image: Image, opacity: float32) =
proc applyOpacity*(image: Image, opacity: float32): Image =
## Multiplies alpha of the image by opacity.
result = newImageNoInit(image.width, image.height)
let op = (255 * opacity).uint8
for y in 0 ..< image.height:
for x in 0 ..< image.width:
var rgba = image.getRgbaUnsafe(x, y)
rgba.a = ((rgba.a.uint32 * op.uint32) div 255).clamp(0, 255).uint8
image.setRgbaUnsafe(x, y, rgba)
# TODO: Make this method use path's AA lines.
proc line*(image: Image, at, to: Vec2, rgba: ColorRGBA) =
## Draws a line from one at vec to to vec.
let
dx = to.x - at.x
dy = to.y - at.y
var x = at.x
while true:
if dx == 0:
break
let y = at.y + dy * (x - at.x) / dx
image[int x, int y] = rgba
if at.x < to.x:
x += 1
if x > to.x:
break
else:
x -= 1
if x < to.x:
break
var y = at.y
while true:
if dy == 0:
break
let x = at.x + dx * (y - at.y) / dy
image[int x, int y] = rgba
if at.y < to.y:
y += 1
if y > to.y:
break
else:
y -= 1
if y < to.y:
break
result.setRgbaUnsafe(x, y, rgba)