From 4b37c7c8cacad50fa71bbdbc88789f235fa3d836 Mon Sep 17 00:00:00 2001
From: ubq323 <ubq323@ubq323.website>
Date: Thu, 4 Aug 2022 22:28:06 +0100
Subject: img
---
img/load_pnm.lua | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
(limited to 'img')
diff --git a/img/load_pnm.lua b/img/load_pnm.lua
index ce1853a..0c89662 100644
--- a/img/load_pnm.lua
+++ b/img/load_pnm.lua
@@ -2,7 +2,7 @@
-- because the textual ones are annoying
-- types:
--- P1 ascii pbm
+-- P1 ascii pbm
-- P2 ascii pgm
-- P3 ascii ppm
-- P4 binary pbm
@@ -17,7 +17,7 @@ local function np_p1(imgf,cur,depth)
local val,ncur = imgf:match("[01]%s*()",cur)
val = tonumber(val)
assert(val,"bad image format at "..cur)
- local p = (1-v) -- 1 is black (0), 0 is white (1)
+ local p = (1-val) -- 1 is black (0), 0 is white (1)
local pixel = {p,p,p}
return pixel,ncur
end
@@ -51,7 +51,7 @@ local function np_p5(imgf,cur,depth)
return pixel,cur+1
end
local function np_p6(imgf,cur,depth)
- local vr,vg,vb = img:byte(cur,cur+3)
+ local vr,vg,vb = imgf:byte(cur,cur+3)
for _,v in ipairs{vr,vg,vb} do
assert(0<=v and v<=depth, "image value out of range at "..cur)
end
@@ -100,7 +100,7 @@ local function parse(imgf)
local x,y=1,1
local nextpixel = nextpixel_fns[typech]
-
+
while cur <= #imgf do
local npixel,ncur = nextpixel(imgf,cur,depth)
img[y][x] = npixel
@@ -113,7 +113,7 @@ local function parse(imgf)
break
end
end
-
+
img.width = width
img.height = height
return img
--
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