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better error msg

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Ryan Oldenburg 2021-01-23 14:53:43 -06:00
parent 3f3db2fcec
commit 95471f36a7
1 changed files with 8 additions and 2 deletions
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10
src/pixie/images.nim
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@ -121,9 +121,15 @@ proc subImage*(image: Image, x, y, w, h: int): Image =
## Gets a sub image from this image. ## Gets a sub image from this image.
if x < 0 or x + w > image.width: if x < 0 or x + w > image.width:
raise newException(PixieError, "Param x value " & $x & " is out of bounds") raise newException(
PixieError,
"Params x: " & $x & " w: " & $w & " invalid, image width is " & $image.width
)
if y < 0 or y + h > image.height: if y < 0 or y + h > image.height:
raise newException(PixieError, "Param y value " & $y & " is out of bounds") raise newException(
PixieError,
"Params y: " & $y & " h: " & $h & " invalid, image height is " & $image.height
)
result = newImage(w, h) result = newImage(w, h)
for y2 in 0 ..< h: for y2 in 0 ..< h: