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discuss removed todo

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This commit is contained in:
Ryan Oldenburg 2020-12-09 04:50:17 -06:00
parent 1ad2f3e05f
commit 711f1f19b6
1 changed files with 4 additions and 7 deletions
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11
src/pixie/images.nim
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@ -1,5 +1,7 @@
import chroma, blends, vmath, common, nimsimd/sse2 import chroma, blends, vmath, common, nimsimd/sse2
const h = 0.5.float32
type type
Image* = ref object Image* = ref object
## Main image object that holds the bitmap data in RGBA format. ## Main image object that holds the bitmap data in RGBA format.
@ -198,9 +200,7 @@ proc fromAlphy*(image: Image) =
proc getRgbaSmooth*(image: Image, x, y: float32): ColorRGBA {.inline.} = proc getRgbaSmooth*(image: Image, x, y: float32): ColorRGBA {.inline.} =
## Gets a pixel as (x, y) floats. ## Gets a pixel as (x, y) floats.
var let
x = x # TODO: look at maybe +0.5
y = y # TODO: look at maybe +0.5
minX = x.floor.int minX = x.floor.int
difX = x - x.floor difX = x - x.floor
minY = y.floor.int minY = y.floor.int
@ -387,8 +387,7 @@ proc drawCorrect*(a, b: Image, mat: Mat3, blendMode: BlendMode) =
## Draws one image onto another using matrix with color blending. ## Draws one image onto another using matrix with color blending.
var var
matInv = mat.inverse() matInv = mat.inverse()
# compute movement vectors # Compute movement vectors
h = 0.5.float32
p = matInv * vec2(0 + h, 0 + h) p = matInv * vec2(0 + h, 0 + h)
dx = matInv * vec2(1 + h, 0 + h) - p dx = matInv * vec2(1 + h, 0 + h) - p
dy = matInv * vec2(0 + h, 1 + h) - p dy = matInv * vec2(0 + h, 1 + h) - p
@ -421,8 +420,6 @@ proc drawCorrect*(a, b: Image, mat: Mat3, blendMode: BlendMode) =
b[xFloat.round.int, yFloat.round.int] b[xFloat.round.int, yFloat.round.int]
a.setRgbaUnsafe(x, y, mixer(rgba, rgba2)) a.setRgbaUnsafe(x, y, mixer(rgba, rgba2))
const h = 0.5.float32
proc drawUber( proc drawUber(
a, b: Image, a, b: Image,
p, dx, dy: Vec2, p, dx, dy: Vec2,