pixie/tests/test_images.nim
2022-07-21 20:36:36 -05:00

255 lines
6 KiB
Nim

import chroma, pixie, pixie/internal, vmath, xrays
block:
let image = newImage(10, 10)
image[0, 0] = rgba(255, 255, 255, 255)
doAssert image[0, 0] == rgba(255, 255, 255, 255)
block:
let image = newImage(10, 10)
image.fill(rgba(255, 0, 0, 255))
doAssert image[0, 0] == rgba(255, 0, 0, 255)
block:
let
image = newImage(256, 256)
subImage = image.subImage(0, 0, 128, 128)
doAssert subImage.width == 128 and subImage.height == 128
block:
let image = newImage(10, 10)
image.fill(rgba(255, 0, 0, 128))
image.data.toPremultipliedAlpha()
doAssert image[9, 9] == rgba(128, 0, 0, 128)
block:
var data = newSeq[ColorRGBX](100)
fillUnsafe(data, rgbx(100, 0, 0, 128), 0, data.len)
data.toStraightAlpha()
doAssert data[10] == rgbx(199, 0, 0, 128)
block:
let image = newImage(100, 100)
image.fill(rgbx(200, 200, 200, 200))
image.applyOpacity(0.5)
doAssert image[0, 0] == rgbx(100, 100, 100, 100)
doAssert image[88, 88] == rgbx(100, 100, 100, 100)
block:
let
a = newImage(101, 101)
b = newImage(50, 50)
a.fill(rgba(255, 0, 0, 255))
b.fill(rgba(0, 255, 0, 255))
a.draw(b)
a.xray("tests/images/flipped1.png")
a.flipVertical()
a.xray("tests/images/flipped2.png")
a.flipHorizontal()
a.xray("tests/images/flipped3.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(-10, 0, 20, 20)
b.xray("tests/images/superimage1.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(-10, -10, 20, 20)
b.xray("tests/images/superimage2.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(90, 0, 120, 120)
b.xray("tests/images/superimage3.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(90, 90, 120, 120)
b.xray("tests/images/superimage4.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(-10, -10, 120, 120)
b.xray("tests/images/superimage5.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.superImage(45, 45, 20, 20)
b.xray("tests/images/superimage6.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.minifyBy2()
b.xray("tests/images/minifiedBy2.png")
block:
let
a = readImage("tests/images/minifiedBy2.png")
b = a.magnifyBy2()
b.xray("tests/images/magnifiedBy2.png")
block:
let
a = readImage("tests/images/flipped1.png")
b = a.minifyBy2(2)
b.xray("tests/images/minifiedBy4.png")
block:
let
a = readImage("tests/images/minifiedBy4.png")
b = a.magnifyBy2(2)
b.xray("tests/images/magnifiedBy4.png")
block:
let
a = readImage("tests/fileformats/png/mandrill.png")
b = a.minifyBy2()
b.xray("tests/images/minifiedMandrill.png")
block:
let a = newImage(100, 100)
a.fill(rgbx(50, 100, 150, 200))
a.invert()
doAssert a[0, 0] == rgbx(44, 33, 23, 55)
block:
let ctx = newContext(100, 100)
ctx.fillStyle = rgba(255, 255, 255, 255)
ctx.image.fill(rgba(0, 0, 0, 255))
ctx.fillRect(rect(25, 25, 50, 50), )
ctx.image.blur(20)
ctx.image.xray("tests/images/imageblur20.png")
block:
let ctx = newContext(100, 100)
ctx.fillStyle = rgba(255, 255, 255, 255)
ctx.image.fill(rgba(0, 0, 0, 255))
ctx.fillRect(rect(25, 25, 50, 50))
ctx.image.blur(20, rgba(0, 0, 0, 255))
ctx.image.xray("tests/images/imageblur20oob.png")
block: # Test conversion between image and mask
let
originalImage = newImage(100, 100)
originalMask = newMask(100, 100)
let p = newPath()
p.circle(50, 50, 25)
originalImage.fillPath(p, rgba(255, 0, 0, 255))
originalMask.fillPath(p)
# # Converting an image to a mask == a mask of the same fill
# doAssert newMask(originalImage).data == originalMask.data
# # Converting a mask to an image == converting an image to a mask as an image
# doAssert newImage(newMask(originalImage)).data == newImage(originalMask).data
block:
let p = newPath()
p.roundedRect(10, 10, 80, 80, 10, 10, 10, 10)
let image = newImage(100, 100)
image.fillPath(p, rgba(255, 0, 0, 255))
newImage(newMask(image)).xray("tests/images/mask2image.png")
block:
let image = newImage(100, 100)
doAssert image.isOneColor()
block:
let image = newImage(100, 100)
image.fill(rgba(255, 255, 255, 255))
doAssert image.isOneColor()
block:
let image = newImage(100, 100)
image.fill(rgba(1, 2, 3, 4))
doAssert image.isOneColor()
block:
let image = newImage(100, 100)
image[99, 99] = rgba(255, 255, 255, 255)
doAssert not image.isOneColor()
block:
let image = newImage(100, 100)
doAssert image.isTransparent()
block:
let image = newImage(100, 100)
image.fill(rgba(255, 255, 255, 0))
doAssert image.isTransparent()
block:
let image = newImage(100, 100)
image[99, 99] = rgba(255, 255, 255, 255)
doAssert not image.isTransparent()
block:
let image = newImage(100, 100)
image.fill(rgba(255, 255, 255, 255))
doAssert not image.isTransparent()
block:
let image = newImage(100, 100)
image.fill(rgba(255, 255, 255, 255))
doAssert image.isOpaque()
block:
let image = newImage(100, 100)
image.fill(rgba(255, 255, 255, 255))
image[9, 13] = rgbx(250, 250, 250, 250)
doAssert not image.isOpaque()
block:
let a = newImage(400, 400)
let b = newImage(156, 434)
b.fill(rgba(255, 0, 0, 255))
a.draw(
b,
mat3(
-0.5, -4.371138828673793e-008, 0.0,
-4.371138828673793e-008, 0.5, 0.0,
292.0, 45.0, 1.0
)
)
block:
var
colors: seq[ColorRGBA]
premultiplied: seq[ColorRGBX]
for a in 0.uint8 .. 255:
for r in 0.uint8 .. 255:
let
rgba = rgba(r, 0, 0, a)
floats = rgba.color()
premul = color(floats.r * floats.a, 0, 0, floats.a)
rgbx = rgbx(
round(premul.r * 255).uint8,
0,
0,
round(premul.a * 255).uint8
)
colors.add(rgba)
premultiplied.add(rgbx)
var converted = cast[seq[ColorRGBX]](colors)
toPremultipliedAlpha(converted)
for i in 0 ..< premultiplied.len:
doAssert premultiplied[i] == converted[i]
doAssert colors[i].rgbx == converted[i]