Add point count to lua SkPath.
Add some scripts for classifying rrects and counting complex clip combinations.
R=reed@google.com
Author: bsalomon@google.com
Review URL: https://codereview.chromium.org/181843004
git-svn-id: http://skia.googlecode.com/svn/trunk@13601 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/lua/classify_rrect_clips.lua b/tools/lua/classify_rrect_clips.lua
new file mode 100644
index 0000000..792d169
--- /dev/null
+++ b/tools/lua/classify_rrect_clips.lua
@@ -0,0 +1,109 @@
+
+function sk_scrape_startcanvas(c, fileName) end
+
+function sk_scrape_endcanvas(c, fileName) end
+
+function classify_rrect(rrect)
+ if (rrect:type() == "simple") then
+ local x, y = rrect:radii(0)
+ if (x == y) then
+ return "simple_circle"
+ else
+ return "simple_oval"
+ end
+ elseif (rrect:type() == "complex") then
+ local numNotSquare = 0
+ local rx, ry
+ local same = true;
+ local first_not_square_corner
+ local last_not_square_corner
+ for i = 1, 4 do
+ local x, y = rrect:radii(i-1)
+ if (x ~= 0 and y ~= 0) then
+ if (numNotSquare == 0) then
+ rx = x
+ ry = y
+ first_not_square_corner = i
+ else
+ last_not_square_corner = i
+ if (rx ~= x or ry ~=y) then
+ same = false
+ end
+ end
+ numNotSquare = numNotSquare + 1
+ end
+ end
+ local numSquare = 4 - numNotSquare
+ if (numSquare > 0 and same) then
+ local corners = "corners"
+ if (numSquare == 2) then
+ if ((last_not_square_corner - 1 == first_not_square_corner) or
+ (1 == first_not_square_corner and 4 == last_not_square_corner )) then
+ corners = "adjacent_" .. corners
+ else
+ corners = "opposite_" .. corners
+ end
+ elseif (1 == numSquare) then
+ corners = "corner"
+ end
+ if (rx == ry) then
+ return "circles_with_" .. numSquare .. "_square_" .. corners
+ else
+ return "ovals_with_" .. numSquare .. "_square_" .. corners
+ end
+ end
+ return "complex_unclassified"
+ elseif (rrect:type() == "rect") then
+ return "rect"
+ elseif (rrect:type() == "oval") then
+ local x, y = rrect:radii(0)
+ if (x == y) then
+ return "circle"
+ else
+ return "oval"
+ end
+ elseif (rrect:type() == "empty") then
+ return "empty"
+ else
+ return "unknown"
+ end
+end
+
+function print_classes(class_table)
+ function sort_classes(a, b)
+ return a.count > b.count
+ end
+ array = {}
+ for k, v in pairs(class_table) do
+ if (type(v) == "number") then
+ array[#array + 1] = {class = k, count = v};
+ end
+ end
+ table.sort(array, sort_classes)
+ local i
+ for i = 1, #array do
+ io.write(array[i].class, ": ", array[i].count, " (", array[i].count/class_table["total"] * 100, "%)\n");
+ end
+end
+
+function sk_scrape_accumulate(t)
+ if (t.verb == "clipRRect") then
+ local rrect = t.rrect
+ table["total"] = (table["total"] or 0) + 1
+ local class = classify_rrect(rrect)
+ table[class] = (table[class] or 0) + 1
+ end
+end
+
+function sk_scrape_summarize()
+ print_classes(table)
+ --[[ To use the web scraper comment out the above call to print_classes, run the code below,
+ and in the aggregator pass agg_table to print_classes.
+ for k, v in pairs(table) do
+ if (type(v) == "number") then
+ local t = "agg_table[\"" .. k .. "\"]"
+ io.write(t, " = (", t, " or 0) + ", table[k], "\n" );
+ end
+ end
+ --]]
+end