skia2/tools/lua/bitmap_statistics.lua
2013-07-26 15:23:43 +00:00

60 lines
1.8 KiB
Lua

function string.startsWith(String,Start)
return string.sub(String,1,string.len(Start))==Start
end
function string.endsWith(String,End)
return End=='' or string.sub(String,-string.len(End))==End
end
local canvas = nil
local num_perspective_bitmaps = 0
local num_affine_bitmaps = 0
local num_scaled_bitmaps = 0
local num_translated_bitmaps = 0
local num_identity_bitmaps = 0
local num_scaled_up = 0
local num_scaled_down = 0
function sk_scrape_startcanvas(c, fileName)
canvas = c
end
function sk_scrape_endcanvas(c, fileName)
canvas = nil
end
function sk_scrape_accumulate(t)
-- dump the params in t, specifically showing the verb first, which we
-- then nil out so it doesn't appear in tostr()
if (string.startsWith(t.verb,"drawBitmap")) then
matrix = canvas:getTotalMatrix()
matrixType = matrix:getType()
if matrixType.perspective then
num_perspective_bitmaps = num_perspective_bitmaps + 1
elseif matrixType.affine then
num_affine_bitmaps = num_affine_bitmaps + 1
elseif matrixType.scale then
num_scaled_bitmaps = num_scaled_bitmaps + 1
if matrix:getScaleX() > 1 or matrix:getScaleY() > 1 then
num_scaled_up = num_scaled_up + 1
else
num_scaled_down = num_scaled_down + 1
end
elseif matrixType.translate then
num_translated_bitmaps = num_translated_bitmaps + 1
else
num_identity_bitmaps = num_identity_bitmaps + 1
end
end
end
function sk_scrape_summarize()
io.write( "identity = ", num_identity_bitmaps,
", translated = ", num_translated_bitmaps,
", scaled = ", num_scaled_bitmaps, " (up = ", num_scaled_up, "; down = ", num_scaled_down, ")",
", affine = ", num_affine_bitmaps,
", perspective = ", num_perspective_bitmaps,
"\n")
end