Merge branch 'cakebaby' of github.com:donbright/openscad into cakebaby

Conflicts:
	tests/CMakeLists.txt

12 files changed, 108 insertions, 875 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index f57e40e..f604f73 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -143,10 +143,10 @@ if (NOT OPENCSG_INCLUDE_DIR)
   message(STATUS "OPENCSG_DIR: " ${OPENCSG_DIR})
   find_path(OPENCSG_INCLUDE_DIR
             opencsg.h
-            PATHS ${OPENCSG_DIR}/include)
+            HINTS ${OPENCSG_DIR}/include)
   find_library(OPENCSG_LIBRARY
                opencsg
-               PATHS ${OPENCSG_DIR}/lib)
+               HINTS ${OPENCSG_DIR}/lib)
   if (NOT OPENCSG_INCLUDE_DIR OR NOT OPENCSG_LIBRARY)
     message(FATAL_ERROR "OpenCSG not found")
   else()
@@ -187,18 +187,35 @@ BISON_TARGET(OpenSCADparser ../src/parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser_y
 ADD_FLEX_BISON_DEPENDENCY(OpenSCADlexer OpenSCADparser)
 set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/parser_yacc.c PROPERTIES LANGUAGE "CXX")
 
-if (NOT $ENV{MACOSX_DEPLOY_DIR} STREQUAL "")
+# CGAL
+
+if (NOT $ENV{CGAL_DIR} STREQUAL "")
+  set(CGAL_DIR "$ENV{CGAL_DIR}")
+elseif (NOT $ENV{MACOSX_DEPLOY_DIR} STREQUAL "")
   set(CGAL_DIR "$ENV{MACOSX_DEPLOY_DIR}/lib/CGAL")
   set(CMAKE_MODULE_PATH "${CGAL_DIR}")
 endif()
 find_package(CGAL REQUIRED)
 message(STATUS "CGAL found in ${CGAL_USE_FILE} ${CGAL_INCLUDE_DIRS} ${CGAL_LIBRARIES_DIR}")
+if("${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}" VERSION_LESS 3.6)
+  message(FATAL_ERROR "CGAL >= 3.6 required")
+endif()
 include_directories(${CGAL_INCLUDE_DIRS})
 
+# Imagemagick
+
+find_package(ImageMagick COMPONENTS convert)
+if (ImageMagick_convert_FOUND)
+  message(STATUS "ImageMagick convert executable found: " ${ImageMagick_convert_EXECUTABLE})
+else()
+  message(FATAL_ERROR "Couldn't find imagemagick 'convert' program")
+endif()
+
 # Internal includes
 include_directories(../src)
 
 add_definitions(-DOPENSCAD_VERSION=test -DOPENSCAD_YEAR=2011 -DOPENSCAD_MONTH=10)
+add_definitions(-DOPENSCAD_TESTING)
 
 set(CORE_SOURCES
   tests-common.cc 
@@ -294,12 +311,6 @@ add_executable(echotest echotest.cc)
 target_link_libraries(echotest tests-nocgal tests-core ${QT_LIBRARIES} ${OPENGL_LIBRARY} ${Boost_LIBRARIES})
 
 #
-# Yangli Hector Yee's PerceptualDiff code
-#
-
-add_executable(yee_compare yee_compare.cpp lodepng.cpp)
-
-#
 # dumptest
 #
 add_executable(dumptest dumptest.cc)
@@ -357,7 +368,7 @@ function(add_cmdline_test TESTCMD TESTSUFFIX)
   foreach (SCADFILE ${ARGN})
     get_filename_component(TESTNAME ${SCADFILE} NAME_WE)
     string(REPLACE " " "_" TESTNAME ${TESTNAME}) # Test names cannot include spaces
-    add_test("${TESTCMD_NAME}_${TESTNAME}" ${PYTHON_EXECUTABLE} ${tests_SOURCE_DIR}/test_cmdline_tool.py -s ${TESTSUFFIX} ${CMAKE_BINARY_DIR}/${TESTCMD} "${SCADFILE}")
+    add_test("${TESTCMD_NAME}_${TESTNAME}" ${PYTHON_EXECUTABLE} ${tests_SOURCE_DIR}/test_cmdline_tool.py -c ${ImageMagick_convert_EXECUTABLE} -s ${TESTSUFFIX} ${CMAKE_BINARY_DIR}/${TESTCMD} "${SCADFILE}" )
   endforeach()
 endfunction()
 
diff --git a/tests/regression/cgalpngtest/polygon-tests-expected.png b/tests/regression/cgalpngtest/polygon-tests-expected.png
index 89aed2f..5ceabe8 100644
--- a/tests/regression/cgalpngtest/polygon-tests-expected.png
+++ b/tests/regression/cgalpngtest/polygon-tests-expected.png
diff --git a/tests/regression/dumptest/escape-test-expected.txt b/tests/regression/dumptest/escape-test-expected.txt
index bea0156..2097dc4 100644
--- a/tests/regression/dumptest/escape-test-expected.txt
+++ b/tests/regression/dumptest/escape-test-expected.txt
@@ -1,2 +1,2 @@
-	import(file = "A-\\ B-\" C-\t D-\n E-' F-\\\\", layer = "A:\\ B:\" C:\t D:\n E:' F:\\\\", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 1);
+	import(file = "B-\" C-\t D-\n E-'", layer = "A:\\ B:\" C:\t D:\n E:' F:\\\\", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 1);
 
diff --git a/tests/regression/dumptest/polygon-tests-expected.txt b/tests/regression/dumptest/polygon-tests-expected.txt
index ce4ad87..be66d21 100644
--- a/tests/regression/dumptest/polygon-tests-expected.txt
+++ b/tests/regression/dumptest/polygon-tests-expected.txt
@@ -29,4 +29,7 @@
 	multmatrix([[1, 0, 0, -2], [0, 1, 0, -2], [0, 0, 1, 0], [0, 0, 0, 1]]) {
 		polygon(points = [[0, 0], [0.5, -0.2], [1, 0], [1.2, 0.5], [1, 1], [0.5, 1.2], [0, 1], [-0.2, 0.5]], paths = [[0, 1, 2, 3], [4, 5, 6, 7]], convexity = 1);
 	}
+	multmatrix([[1, 0, 0, 2], [0, 1, 0, -4], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		polygon(points = [[0, 0], [1, 0], [1, 1], [0, 0]], paths = undef, convexity = 1);
+	}
 
diff --git a/tests/regression/echotest/builtin-tests-expected.txt b/tests/regression/echotest/builtin-tests-expected.txt
index e8b2027..0e8d1a7 100644
--- a/tests/regression/echotest/builtin-tests-expected.txt
+++ b/tests/regression/echotest/builtin-tests-expected.txt
@@ -1 +1 @@
-ECHO: 3.141592653589793
+ECHO: 3.14159265358979
diff --git a/tests/regression/echotest/dim-all-expected.txt b/tests/regression/echotest/dim-all-expected.txt
index 74044a1..d8c3269 100644
--- a/tests/regression/echotest/dim-all-expected.txt
+++ b/tests/regression/echotest/dim-all-expected.txt
@@ -1,16 +1,16 @@
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: linearX = 51.44957554275265
+ECHO: linearX = 51.4495755427526
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: linearY = 29.13025467434841
+ECHO: linearY = 29.1302546743484
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: aligned = 60.00000000000001
+ECHO: aligned = 60.0000000000000
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: ordinateX = -49.17542445724735
+ECHO: ordinateX = -49.175424457247
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: ordinateY = 30.86974532565159
+ECHO: ordinateY = 30.8697453256515
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
 ECHO: radius = 60
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
 ECHO: diameter = 120
 WARNING: Unsupported DXF Entity `LEADER' (1) in `dim-all.dxf'.
-ECHO: arc = 59.03624346792648
+ECHO: arc = 59.0362434679264
diff --git a/tests/regression/opencsgtest/polygon-tests-expected.png b/tests/regression/opencsgtest/polygon-tests-expected.png
index 4d88973..fe84a80 100644
--- a/tests/regression/opencsgtest/polygon-tests-expected.png
+++ b/tests/regression/opencsgtest/polygon-tests-expected.png
diff --git a/tests/regression/throwntogethertest/polygon-tests-expected.png b/tests/regression/throwntogethertest/polygon-tests-expected.png
index c9cdb36..779b878 100644
--- a/tests/regression/throwntogethertest/polygon-tests-expected.png
+++ b/tests/regression/throwntogethertest/polygon-tests-expected.png
diff --git a/tests/test_cmdline_tool.py b/tests/test_cmdline_tool.py
index 40aa4d6..ebe802e 100755
--- a/tests/test_cmdline_tool.py
+++ b/tests/test_cmdline_tool.py
@@ -49,13 +49,15 @@ def execute_and_redirect(cmd, params, outfile):
     retval = -1
     try:
         proc = subprocess.Popen([cmd] + params, stdout=outfile)
+        out = proc.communicate()[0]
         retval = proc.wait()
     except:
         print >> sys.stderr, "Error running subprocess: ", sys.exc_info()[1]
         print >> sys.stderr, " cmd:", cmd
         print >> sys.stderr, " params:", params
         print >> sys.stderr, " outfile:", outfile
-    return retval
+    if outfile == subprocess.PIPE: return (retval, out)
+    else: return retval
 
 def get_normalized_text(filename):
     text = open(filename).read()
@@ -74,15 +76,28 @@ def compare_default(resultfilename):
     return True
 
 def compare_png(resultfilename):
-    print >> sys.stderr, 'Yee image compare:'
+    #args = [expectedfilename, resultfilename, "-alpha", "Off", "-compose", "difference", "-composite", "-threshold", "10%", "-blur", "2", "-threshold", "30%", "-format", "%[fx:w*h*mean]", "info:"]
+    #args = [expectedfilename, resultfilename, "-alpha", "Off", "-compose", "difference", "-composite", "-threshold", "10%", "-morphology", "Erode", "Square", "-format", "%[fx:w*h*mean]", "info:"]
+    # 'morphology' is only available in newer versions of ImageMagick. 
+    # http://www.imagemagick.org/Usage/morphology/#alturnative
+    args = [expectedfilename, resultfilename, "-alpha", "Off", 
+        "-compose", "difference", "-composite", "-threshold", "10%", 
+        #"-morphology", "Erode", "Square", 
+        "-gaussian-blur","3x65535", "-threshold","99.999%",
+        "-format", "%[fx:w*h*mean]", "info:"]
+    print >> sys.stderr, 'ImageMagick image comparison: convert ', ' '.join(args[2:])
     print >> sys.stderr, ' expected image: ', expectedfilename
     if not resultfilename:
         print >> sys.stderr, "Error: OpenSCAD did not generate an image to test"
         return False
     print >> sys.stderr, ' actual image: ', resultfilename
-    if execute_and_redirect("./yee_compare", [expectedfilename, resultfilename, "-downsample", "2", "-threshold", "300"], sys.stderr) != 0:
-        return False
-    return True
+
+    (retval, output) = execute_and_redirect(options.convert_exec, args, subprocess.PIPE)
+    if retval == 0:
+        pixelerr = int(float(output.strip()))
+        if pixelerr < 32: return True
+        else: print >> sys.stderr, pixelerr, ' pixel errors'
+    return False
 
 def compare_with_expected(resultfilename):
     if not options.generate:
@@ -135,11 +150,12 @@ def usage():
     print >> sys.stderr, "  -g, --generate        Generate expected output for the given tests"
     print >> sys.stderr, "  -s, --suffix=<suffix> Write -expected and -actual files with the given suffix instead of .txt"
     print >> sys.stderr, "  -t, --test=<name>     Specify test name instead of deducting it from the argument"
+    print >> sys.stderr, "  -c, --convexec=<name> Path to ImageMagick 'convert' executable"
 
 if __name__ == '__main__':
     # Handle command-line arguments
     try:
-        opts, args = getopt.getopt(sys.argv[1:], "gs:t:", ["generate", "suffix=", "test="])
+        opts, args = getopt.getopt(sys.argv[1:], "gs:c:t:", ["generate", "convexec=", "suffix=", "test="])
     except getopt.GetoptError, err:
         usage()
         sys.exit(2)
@@ -157,6 +173,8 @@ if __name__ == '__main__':
             else: options.suffix = a
         elif o in ("-t", "--test"):
             options.testname = a
+	elif o in ("-c", "--convexec"): 
+            options.convert_exec = os.path.normpath( a )
 
     # <cmdline-tool> and <argument>
     if len(args) < 2:
diff --git a/tests/test_pretty_print.py b/tests/test_pretty_print.py
index fb88c2f..4dd614b 100755
--- a/tests/test_pretty_print.py
+++ b/tests/test_pretty_print.py
@@ -76,7 +76,7 @@ def read_sysinfo(filename):
 
 	data += read_gitinfo()
 
-	data += 'Image comparison: PerceptualDiff by H. Yee'
+	data += 'Image comparison: ImageMagick'
 
 	data = data.strip()
 
@@ -116,7 +116,7 @@ class Test:
 def parsetest(teststring):
 	patterns = ["Test:(.*?)\n", # fullname
 		"Test time =(.*?) sec\n",
-		"Test time.*?Test (Passed)",
+		"Test time.*?Test (Passed)", # pass/fail
 		"Output:(.*?)<end of output>",
 		'Command:.*?-s" "(.*?)"', # type
 		"actual .*?:(.*?)\n",
@@ -147,7 +147,8 @@ def wikify_filename(testname,filename,sysid):
 	return result.replace('/','_')
 
 
-def towiki(wiki_rootpath, startdate, tests, enddate, sysinfo, sysid, testlog):
+def towiki(wiki_rootpath, startdate, tests, enddate, sysinfo, sysid):
+
 	wiki_template = """
 <h3>[[WIKI_ROOTPATH]] test run report</h3>
 
@@ -165,14 +166,25 @@ end time  : ENDDATE <br>
 
 '''Failed image tests'''
 
-{| border=1 cellspacing=0 cellpadding=1
-! Testname !! expected output !! actual output
 <REPEAT1>
+{| border=1 cellspacing=0 cellpadding=1
 |-
-| FTESTNAME || [[File:EXPECTEDFILE|thumb|250px]] || ACTUALFILE_WIKI
-</REPEAT1>
+| colspan=2 | FTESTNAME  
+|-
+| Expected image || Actual image
+|-
+| [[File:EXPECTEDFILE|250px]] || ACTUALFILE_WIKI
 |}
 
+<pre>
+TESTLOG
+</pre>
+
+
+
+</REPEAT1>
+
+
 '''Failed text tests'''
 
 {|border=1 cellspacing=0 cellpadding=1
@@ -183,47 +195,40 @@ end time  : ENDDATE <br>
 </REPEAT2>
 |}
 
-'''Test logs'''
-
-(excerpted from Testing/Temporary/LastTest.Log)
-
-<pre>
-FAILED_TESTLOGS
-</pre>
 
 """
-	numpassed = len(filter(lambda x: x.passed, tests))
-	percent = str(int(100.0*numpassed / len(tests)))
+	passed_tests = filter(lambda x: x.passed, tests)
+	failed_tests = filter(lambda x: not x.passed, tests)
+	percent = str(int(100.0*len(passed_tests) / len(tests)))
 	manifest = {}
 	s = wiki_template
 	repeat1 = ezsearch('(<REPEAT1>.*?</REPEAT1>)',s)
 	repeat2 = ezsearch('(<REPEAT2>.*?</REPEAT2>)',s)
 	dic = { 'STARTDATE': startdate, 'ENDDATE': enddate, 'WIKI_ROOTPATH': wiki_rootpath,
-		'SYSINFO': sysinfo, 'SYSID':sysid, 'LASTTESTLOG':testlog, 
-		'NUMTESTS':len(tests), 'NUMPASSED':numpassed, 'PERCENTPASSED':percent }
+		'SYSINFO': sysinfo, 'SYSID':sysid, 
+		'NUMTESTS':len(tests), 'NUMPASSED':len(passed_tests), 'PERCENTPASSED':percent }
 	for key in dic.keys():
-		s = re.sub(key,str(dic[key]),s)
+		s = s.replace(key,str(dic[key]))
 	testlogs = ''
-	for t in tests:
-		# if t.passed: noop
-		if not t.passed:
-			testlogs += '\n\n'+t.fulltestlog
-			if t.type=='txt':
-				newchunk = re.sub('FTEST_OUTPUTFILE',t.fullname,repeat2)
-				newchunk = re.sub('FTESTNAME',t.fullname,repeat2)
-				s = s.replace(repeat2, newchunk+repeat2)
-			elif t.type=='png':
-				manifest[t.actualfile] = wikify_filename(t.fullname,t.actualfile,sysid)
-				manifest[t.expectedfile] = wikify_filename(t.fullname,t.expectedfile,sysid)
-				if t.actualfile: 
-					actualfile_wiki = '[[File:'+manifest[t.actualfile]+'|thumb|250px]]'
-				else:
-					actualfile_wiki = 'No file generated.<br/>See log for details'
-				newchunk = re.sub('FTESTNAME',t.fullname,repeat1)
-				newchunk = newchunk.replace('ACTUALFILE_WIKI',actualfile_wiki)
-				newchunk = newchunk.replace('EXPECTEDFILE',manifest[t.expectedfile])
-				s = s.replace(repeat1, newchunk+repeat1)
-	s = s.replace('FAILED_TESTLOGS',testlogs)
+	for t in failed_tests:
+		testlogs += '\n\n'+t.fulltestlog
+		if t.type=='txt':
+			newchunk = re.sub('FTEST_OUTPUTFILE',t.fullname,repeat2)
+			newchunk = re.sub('FTESTNAME',t.fullname,repeat2)
+			s = s.replace(repeat2, newchunk+repeat2)
+		elif t.type=='png':
+			manifest[t.actualfile] = wikify_filename(t.fullname,t.actualfile,sysid)
+			manifest[t.expectedfile] = wikify_filename(t.fullname,t.expectedfile,sysid)
+			if t.actualfile: 
+				actualfile_wiki = '[[File:'+manifest[t.actualfile]+'|250px]]'
+			else:
+				actualfile_wiki = 'No image generated.'
+			newchunk = re.sub('FTESTNAME',t.fullname,repeat1)
+			newchunk = newchunk.replace('ACTUALFILE_WIKI',actualfile_wiki)
+			newchunk = newchunk.replace('EXPECTEDFILE',manifest[t.expectedfile])
+			newchunk = newchunk.replace('TESTLOG',t.fulltestlog)
+			s = s.replace(repeat1, newchunk+repeat1)
+
 	s = s.replace(repeat1,'')
 	s = s.replace(repeat2,'')
 	s = re.sub('<REPEAT.*?>\n','',s)
@@ -253,7 +258,7 @@ def upload_dryrun(wikiurl,api_php_path,wikidata,manifest,wiki_rootpath,sysid,bot
 	print 'save ', len(wikidata), ' bytes to page ',wiki_rootpath+sysid
 	for localfile in manifest.keys():
 		if localfile:
-			localf=open(localfile)
+			localf=open(localfile,'rb')
 			wikifile = manifest[localfile]
 			print 'upload',localfile,wikifile
 
@@ -289,7 +294,7 @@ def upload(wikiurl,api_php_path,wikidata,manifest,wiki_rootpath,sysid,botname,bo
 	print 'upload images'
 	for localfile in sorted(manifest.keys()):
 		if localfile:
-			localf = open(localfile)
+			localf = open(localfile,'rb')
 			wikifile = manifest[localfile]
 			skip=False
 			if 'expected.png' in wikifile.lower():
@@ -301,7 +306,10 @@ def upload(wikiurl,api_php_path,wikidata,manifest,wiki_rootpath,sysid,botname,bo
 				print 'uploading',wikifile,'...'
 				site.upload(localf,wikifile,wiki_rootpath + ' test', ignore=True)
 
-wikisite = 'cakebaby.referata.com'
+#wikisite = 'cakebaby.referata.com'
+#wiki_api_path = ''
+wikisite = 'cakebaby.wikia.com'
+wiki_api_path = '/'
 wiki_rootpath = 'OpenSCAD'
 builddir = os.getcwd()
 logpath = os.path.join(builddir,'Testing','Temporary')
@@ -314,11 +322,11 @@ def main():
 	sysinfo, sysid = read_sysinfo('sysinfo.txt')
 	if '--forceupload' in sys.argv: forceupl=True
 	else: forceupl=False
-	manifest, wikidata = towiki(wiki_rootpath, startdate, tests, enddate, sysinfo, sysid, testlog)
+	manifest, wikidata = towiki(wiki_rootpath, startdate, tests, enddate, sysinfo, sysid)
 	trysave(wikidata, os.path.join(logpath,sysid+'.wiki'))
 	htmldata = wikitohtml(wiki_rootpath, sysid, wikidata, manifest)
 	trysave(htmldata, os.path.join(logpath,sysid+'.html'))
 	if '--upload' in sys.argv:
-		upload(wikisite,'',wikidata,manifest,wiki_rootpath,sysid,'openscadbot','tobdacsnepo',dryrun=False,forceupload=forceupl)
+		upload(wikisite,wiki_api_path,wikidata,manifest,wiki_rootpath,sysid,'openscadbot','tobdacsnepo',dryrun=False,forceupload=forceupl)
 main()
 
diff --git a/tests/yee_compare.cpp b/tests/yee_compare.cpp
deleted file mode 100644
index 9de4720..0000000
--- a/tests/yee_compare.cpp
+++ /dev/null
@@ -1,681 +0,0 @@
-// modified from PerceptualDiff source for OpenSCAD, 2011 September
-
-#include "yee_compare.h"
-#include "lodepng.h"
-#include <cstdlib>
-#include <cstring>
-#include <cstdio>
-#include <math.h>
-
-static const char* copyright = 
-"PerceptualDiff version 1.1.1, Copyright (C) 2006 Yangli Hector Yee\n\
-PerceptualDiff comes with ABSOLUTELY NO WARRANTY;\n\
-This is free software, and you are welcome\n\
-to redistribute it under certain conditions;\n\
-See the GPL page for details: http://www.gnu.org/copyleft/gpl.html\n\n";
-
-static const char *usage =
-"PeceptualDiff image1.tif image2.tif\n\n\
-   Compares image1.tif and image2.tif using a perceptually based image metric\n\
-   Options:\n\
-\t-verbose       : Turns on verbose mode\n\
-\t-fov deg       : Field of view in degrees (0.1 to 89.9)\n\
-\t-threshold p	 : #pixels p below which differences are ignored\n\
-\t-gamma g       : Value to convert rgb into linear space (default 2.2)\n\
-\t-luminance l   : White luminance (default 100.0 cdm^-2)\n\
-\t-luminanceonly : Only consider luminance; ignore chroma (color) in the comparison\n\
-\t-colorfactor   : How much of color to use, 0.0 to 1.0, 0.0 = ignore color.\n\
-\t-downsample    : How many powers of two to down sample the image.\n\
-\t-output o.ppm  : Write difference to the file o.ppm\n\
-\n\
-\n Note: Input or Output files can also be in the PNG or JPG format or any format\
-\n that FreeImage supports.\
-\n";
-
-CompareArgs::CompareArgs()
-{
-	ImgA = NULL;
-	ImgB = NULL;
-	ImgDiff = NULL;
-	Verbose = false;
-	LuminanceOnly = false;
-	FieldOfView = 45.0f;
-	Gamma = 2.2f;
-	ThresholdPixels = 100;
-	Luminance = 100.0f;
-   ColorFactor = 1.0f;
-   DownSample = 0;
-}
-
-CompareArgs::~CompareArgs()
-{
-	if (ImgA) delete ImgA;
-	if (ImgB) delete ImgB;
-	if (ImgDiff) delete ImgDiff;
-}
-
-bool CompareArgs::Parse_Args(int argc, char **argv)
-{
-	if (argc < 3) {
-		ErrorStr = copyright;
-		ErrorStr += usage;
-		return false;
-	}
-	int image_count = 0;
-	const char* output_file_name = NULL;
-	for (int i = 1; i < argc; i++) {
-		if (strcmp(argv[i], "-fov") == 0) {
-			if (++i < argc) {
-				FieldOfView = (float) atof(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-verbose") == 0) {
-			Verbose = true;
-		} else if (strcmp(argv[i], "-threshold") == 0) {
-			if (++i < argc) {
-				ThresholdPixels = atoi(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-gamma") == 0) {
-			if (++i < argc) {
-				Gamma = (float) atof(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-luminance") == 0) {
-			if (++i < argc) {
-				Luminance = (float) atof(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-luminanceonly") == 0) {
-			LuminanceOnly = true;
-		} else if (strcmp(argv[i], "-colorfactor") == 0) {
-			if (++i < argc) {
-				ColorFactor = (float) atof(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-downsample") == 0) {
-			if (++i < argc) {
-				DownSample = (int) atoi(argv[i]);
-			}
-		} else if (strcmp(argv[i], "-output") == 0) {
-			if (++i < argc) {
-				output_file_name = argv[i];
-			}
-		} else if (image_count < 2) {
-			RGBAImage* img = RGBAImage::ReadFromFile(argv[i]);
-			if (!img) {
-				ErrorStr = "FAIL: Cannot open ";
-				ErrorStr += argv[i];
-				ErrorStr += "\n";
-				return false;
-			} else {
-				++image_count;
-				if(image_count == 1)
-					ImgA = img;
-				else
-					ImgB = img;
-			}
-		} else {
-			fprintf(stderr, "Warning: option/file \"%s\" ignored\n", argv[i]);
-		}
-	} // i
-	if(!ImgA || !ImgB) {
-		ErrorStr = "FAIL: Not enough image files specified\n";
-		return false;
-	}
-   for (int i = 0; i < DownSample; i++) {
-      if (Verbose) printf("Downsampling by %d\n", 1 << (i+1));
-      RGBAImage *tmp = ImgA->DownSample();
-      if (tmp) {
-         delete ImgA;
-         ImgA = tmp;
-      }
-      tmp = ImgB->DownSample();
-      if (tmp) {
-         delete ImgB;
-         ImgB = tmp;
-      }
-   }
-	if(output_file_name) {
-		ImgDiff = new RGBAImage(ImgA->Get_Width(), ImgA->Get_Height(), output_file_name);
-	}
-	return true;
-}
-
-void CompareArgs::Print_Args()
-{
-	printf("Field of view is %f degrees\n", FieldOfView);
-	printf("Threshold pixels is %d pixels\n", ThresholdPixels);
-	printf("The Gamma is %f\n", Gamma);
-	printf("The Display's luminance is %f candela per meter squared\n", Luminance);
-}
-
-//////////////////////////////////////////////////////////////////////
-// Construction/Destruction
-//////////////////////////////////////////////////////////////////////
-
-LPyramid::LPyramid(float *image, int width, int height) :
-	Width(width),
-	Height(height)
-{
-	// Make the Laplacian pyramid by successively
-	// copying the earlier levels and blurring them
-	for (int i=0; i<MAX_PYR_LEVELS; i++) {
-		if (i == 0) {
-			Levels[i] = Copy(image);
-		} else {
-			Levels[i] = new float[Width * Height];
-			Convolve(Levels[i], Levels[i - 1]);
-		}
-	}
-}
-
-LPyramid::~LPyramid()
-{
-	for (int i=0; i<MAX_PYR_LEVELS; i++) {
-		if (Levels[i]) delete Levels[i];
-	}
-}
-
-float *LPyramid::Copy(float *img)
-{
-	int max = Width * Height;
-	float *out = new float[max];
-	for (int i = 0; i < max; i++) out[i] = img[i];
-	
-	return out;
-}
-
-void LPyramid::Convolve(float *a, float *b)
-// convolves image b with the filter kernel and stores it in a
-{
-	int y,x,i,j,nx,ny;
-	const float Kernel[] = {0.05f, 0.25f, 0.4f, 0.25f, 0.05f};
-
-	for (y=0; y<Height; y++) {
-		for (x=0; x<Width; x++) {
-			int index = y * Width + x;
-			a[index] = 0.0f;
-			for (i=-2; i<=2; i++) {
-				for (j=-2; j<=2; j++) {
-					nx=x+i;
-					ny=y+j;
-					if (nx<0) nx=-nx;
-					if (ny<0) ny=-ny;
-					if (nx>=Width) nx=2*Width-nx-1;
-					if (ny>=Height) ny=2*Height-ny-1;
-					a[index] += Kernel[i+2] * Kernel[j+2] * b[ny * Width + nx];
-				} 
-			}
-		}
-	}
-}
-
-float LPyramid::Get_Value(int x, int y, int level)
-{
-	int index = x + y * Width;
-	int l = level;
-	if (l > MAX_PYR_LEVELS) l = MAX_PYR_LEVELS;
-	return Levels[level][index];
-}
-
-
-
-#ifndef M_PI
-#define M_PI 3.14159265f
-#endif
-
-/*
-* Given the adaptation luminance, this function returns the
-* threshold of visibility in cd per m^2
-* TVI means Threshold vs Intensity function
-* This version comes from Ward Larson Siggraph 1997
-*/ 
-
-float tvi(float adaptation_luminance)
-{
-      // returns the threshold luminance given the adaptation luminance
-      // units are candelas per meter squared
-
-      float log_a, r, result; 
-      log_a = log10f(adaptation_luminance);
-
-      if (log_a < -3.94f) {
-            r = -2.86f;
-      } else if (log_a < -1.44f) {
-            r = powf(0.405f * log_a + 1.6f , 2.18f) - 2.86f;
-      } else if (log_a < -0.0184f) {
-            r = log_a - 0.395f;
-      } else if (log_a < 1.9f) {
-            r = powf(0.249f * log_a + 0.65f, 2.7f) - 0.72f;
-      } else {
-            r = log_a - 1.255f;
-      }
-
-      result = powf(10.0f , r); 
-
-      return result;
-
-} 
-
-// computes the contrast sensitivity function (Barten SPIE 1989)
-// given the cycles per degree (cpd) and luminance (lum)
-float csf(float cpd, float lum)
-{
-	float a, b, result; 
-	
-	a = 440.0f * powf((1.0f + 0.7f / lum), -0.2f);
-	b = 0.3f * powf((1.0f + 100.0f / lum), 0.15f);
-		
-	result = a * cpd * expf(-b * cpd) * sqrtf(1.0f + 0.06f * expf(b * cpd)); 
-	
-	return result;	
-}
-
-/*
-* Visual Masking Function
-* from Daly 1993
-*/
-float mask(float contrast)
-{
-      float a, b, result;
-      a = powf(392.498f * contrast,  0.7f);
-      b = powf(0.0153f * a, 4.0f);
-      result = powf(1.0f + b, 0.25f); 
-
-      return result;
-} 
-
-// convert Adobe RGB (1998) with reference white D65 to XYZ
-void AdobeRGBToXYZ(float r, float g, float b, float &x, float &y, float &z)
-{
-	// matrix is from http://www.brucelindbloom.com/
-	x = r * 0.576700f + g * 0.185556f + b * 0.188212f;
-	y = r * 0.297361f + g * 0.627355f + b * 0.0752847f;
-	z = r * 0.0270328f + g * 0.0706879f + b * 0.991248f;
-}
-
-void XYZToLAB(float x, float y, float z, float &L, float &A, float &B)
-{
-	static float xw = -1;
-	static float yw;
-	static float zw;
-	// reference white
-	if (xw < 0) {
-		AdobeRGBToXYZ(1, 1, 1, xw, yw, zw);
-	}
-	const float epsilon  = 216.0f / 24389.0f;
-	const float kappa = 24389.0f / 27.0f;
-	float f[3];
-	float r[3];
-	r[0] = x / xw;
-	r[1] = y / yw;
-	r[2] = z / zw;
-	for (int i = 0; i < 3; i++) {
-		if (r[i] > epsilon) {
-			f[i] = powf(r[i], 1.0f / 3.0f);
-		} else {
-			f[i] = (kappa * r[i] + 16.0f) / 116.0f;
-		}
-	}
-	L = 116.0f * f[1] - 16.0f;
-	A = 500.0f * (f[0] - f[1]);
-	B = 200.0f * (f[1] - f[2]);
-}
-
-bool Yee_Compare(CompareArgs &args)
-{
-	if ((args.ImgA->Get_Width() != args.ImgB->Get_Width()) ||
-		(args.ImgA->Get_Height() != args.ImgB->Get_Height())) {
-		args.ErrorStr = "Image dimensions do not match\n";
-		return false;
-	}
-	
-	unsigned int i, dim;
-	dim = args.ImgA->Get_Width() * args.ImgA->Get_Height();
-	bool identical = true;
-	for (i = 0; i < dim; i++) {
-		if (args.ImgA->Get(i) != args.ImgB->Get(i)) {
-		  identical = false;
-		  break;
-		}
-	}
-	if (identical) {
-		args.ErrorStr = "Images are binary identical\n";
-		return true;
-	}
-	
-	// assuming colorspaces are in Adobe RGB (1998) convert to XYZ
-	float *aX = new float[dim];
-	float *aY = new float[dim];
-	float *aZ = new float[dim];
-	float *bX = new float[dim];
-	float *bY = new float[dim];
-	float *bZ = new float[dim];
-	float *aLum = new float[dim];
-	float *bLum = new float[dim];
-	
-	float *aA = new float[dim];
-	float *bA = new float[dim];
-	float *aB = new float[dim];
-	float *bB = new float[dim];
-
-	if (args.Verbose) printf("Converting RGB to XYZ\n");
-	
-	unsigned int x, y, w, h;
-	w = args.ImgA->Get_Width();
-	h = args.ImgA->Get_Height();
-	for (y = 0; y < h; y++) {
-		for (x = 0; x < w; x++) {
-			float r, g, b, l;
-			i = x + y * w;
-			r = powf(args.ImgA->Get_Red(i) / 255.0f, args.Gamma);
-			g = powf(args.ImgA->Get_Green(i) / 255.0f, args.Gamma);
-			b = powf(args.ImgA->Get_Blue(i) / 255.0f, args.Gamma);						
-			AdobeRGBToXYZ(r,g,b,aX[i],aY[i],aZ[i]);			
-			XYZToLAB(aX[i], aY[i], aZ[i], l, aA[i], aB[i]);
-			r = powf(args.ImgB->Get_Red(i) / 255.0f, args.Gamma);
-			g = powf(args.ImgB->Get_Green(i) / 255.0f, args.Gamma);
-			b = powf(args.ImgB->Get_Blue(i) / 255.0f, args.Gamma);						
-			AdobeRGBToXYZ(r,g,b,bX[i],bY[i],bZ[i]);
-			XYZToLAB(bX[i], bY[i], bZ[i], l, bA[i], bB[i]);
-			aLum[i] = aY[i] * args.Luminance;
-			bLum[i] = bY[i] * args.Luminance;
-		}
-	}
-	
-	if (args.Verbose) printf("Constructing Laplacian Pyramids\n");
-	
-	LPyramid *la = new LPyramid(aLum, w, h);
-	LPyramid *lb = new LPyramid(bLum, w, h);
-	
-	float num_one_degree_pixels = (float) (2 * tan( args.FieldOfView * 0.5 * M_PI / 180) * 180 / M_PI);
-	float pixels_per_degree = w / num_one_degree_pixels;
-	
-	if (args.Verbose) printf("Performing test\n");
-	
-	float num_pixels = 1;
-	unsigned int adaptation_level = 0;
-	for (i = 0; i < MAX_PYR_LEVELS; i++) {
-		adaptation_level = i;
-		if (num_pixels > num_one_degree_pixels) break;
-		num_pixels *= 2;
-	}
-	
-	float cpd[MAX_PYR_LEVELS];
-	cpd[0] = 0.5f * pixels_per_degree;
-	for (i = 1; i < MAX_PYR_LEVELS; i++) cpd[i] = 0.5f * cpd[i - 1];
-	float csf_max = csf(3.248f, 100.0f);
-	
-	float F_freq[MAX_PYR_LEVELS - 2];
-	for (i = 0; i < MAX_PYR_LEVELS - 2; i++) F_freq[i] = csf_max / csf( cpd[i], 100.0f);
-	
-	unsigned int pixels_failed = 0;
-	for (y = 0; y < h; y++) {
-	  for (x = 0; x < w; x++) {
-		int index = x + y * w;
-		float contrast[MAX_PYR_LEVELS - 2];
-		float sum_contrast = 0;
-		for (i = 0; i < MAX_PYR_LEVELS - 2; i++) {
-			float n1 = fabsf(la->Get_Value(x,y,i) - la->Get_Value(x,y,i + 1));
-			float n2 = fabsf(lb->Get_Value(x,y,i) - lb->Get_Value(x,y,i + 1));
-			float numerator = (n1 > n2) ? n1 : n2;
-			float d1 = fabsf(la->Get_Value(x,y,i+2));
-			float d2 = fabsf(lb->Get_Value(x,y,i+2));
-			float denominator = (d1 > d2) ? d1 : d2;
-			if (denominator < 1e-5f) denominator = 1e-5f;
-			contrast[i] = numerator / denominator;
-			sum_contrast += contrast[i];
-		}
-		if (sum_contrast < 1e-5) sum_contrast = 1e-5f;
-		float F_mask[MAX_PYR_LEVELS - 2];
-		float adapt = la->Get_Value(x,y,adaptation_level) + lb->Get_Value(x,y,adaptation_level);
-		adapt *= 0.5f;
-		if (adapt < 1e-5) adapt = 1e-5f;
-		for (i = 0; i < MAX_PYR_LEVELS - 2; i++) {
-			F_mask[i] = mask(contrast[i] * csf(cpd[i], adapt)); 
-		}
-		float factor = 0;
-		for (i = 0; i < MAX_PYR_LEVELS - 2; i++) {
-			factor += contrast[i] * F_freq[i] * F_mask[i] / sum_contrast;
-		}
-		if (factor < 1) factor = 1;
-		if (factor > 10) factor = 10;
-		float delta = fabsf(la->Get_Value(x,y,0) - lb->Get_Value(x,y,0));
-		bool pass = true;
-		// pure luminance test
-		if (delta > factor * tvi(adapt)) {
-			pass = false;
-		} else if (!args.LuminanceOnly) {
-			// CIE delta E test with modifications
-                        float color_scale = args.ColorFactor;
-			// ramp down the color test in scotopic regions
-			if (adapt < 10.0f) {
-                          // Don't do color test at all.
-                          color_scale = 0.0;
-			}
-			float da = aA[index] - bA[index];
-			float db = aB[index] - bB[index];
-			da = da * da;
-			db = db * db;
-			float delta_e = (da + db) * color_scale;
-			if (delta_e > factor) {
-				pass = false;
-			}
-		}
-		if (!pass) {
-			pixels_failed++;
-			if (args.ImgDiff) {
-				args.ImgDiff->Set(255, 0, 0, 255, index);
-			}
-		} else {
-			if (args.ImgDiff) {
-				args.ImgDiff->Set(0, 0, 0, 255, index);
-			}
-		}
-	  }
-	}
-	
-	if (aX) delete[] aX;
-	if (aY) delete[] aY;
-	if (aZ) delete[] aZ;
-	if (bX) delete[] bX;
-	if (bY) delete[] bY;
-	if (bZ) delete[] bZ;
-	if (aLum) delete[] aLum;
-	if (bLum) delete[] bLum;
-	if (la) delete la;
-	if (lb) delete lb;
-	if (aA) delete aA;
-	if (bA) delete bA;
-	if (aB) delete aB;
-	if (bB) delete bB;
-
-	char different[100];
-	sprintf(different, "%d pixels are different\n", pixels_failed);
-
-        // Always output image difference if requested.
-	if (args.ImgDiff) {
-		if (args.ImgDiff->WriteToFile(args.ImgDiff->Get_Name().c_str())) {
-			args.ErrorStr += "Wrote difference image to ";
-			args.ErrorStr+= args.ImgDiff->Get_Name();
-			args.ErrorStr += "\n";
-		} else {
-			args.ErrorStr += "Could not write difference image to ";
-			args.ErrorStr+= args.ImgDiff->Get_Name();
-			args.ErrorStr += "\n";
-		}
-	}
-
-	if (pixels_failed < args.ThresholdPixels) {
-		args.ErrorStr = "Images are perceptually indistinguishable\n";
-                args.ErrorStr += different;
-		return true;
-	}
-	
-	args.ErrorStr = "Images are visibly different\n";
-	args.ErrorStr += different;
-	
-	return false;
-}
-
-RGBAImage* RGBAImage::DownSample() const {
-   if (Width <=1 || Height <=1) return NULL;
-   int nw = Width / 2;
-   int nh = Height / 2;
-   RGBAImage* img = new RGBAImage(nw, nh, Name.c_str());
-   for (int y = 0; y < nh; y++) {
-      for (int x = 0; x < nw; x++) {
-         int d[4];
-         // Sample a 2x2 patch from the parent image.
-         d[0] = Get(2 * x + 0, 2 * y + 0);
-         d[1] = Get(2 * x + 1, 2 * y + 0);
-         d[2] = Get(2 * x + 0, 2 * y + 1);
-         d[3] = Get(2 * x + 1, 2 * y + 1);
-         int rgba = 0;
-         // Find the average color.
-         for (int i = 0; i < 4; i++) {
-            int c = (d[0] >> (8 * i)) & 0xFF;
-            c += (d[1] >> (8 * i)) & 0xFF;
-            c += (d[2] >> (8 * i)) & 0xFF;
-            c += (d[3] >> (8 * i)) & 0xFF;
-            c /= 4;
-            rgba |= (c & 0xFF) << (8 * i);
-         }
-         img->Set(x, y, rgba);
-      }
-   }
-   return img;
-}
-
-
-bool RGBAImage::WriteToFile(const char* filename)
-{
-	LodePNG::Encoder encoder;
-	encoder.addText("Comment","lodepng");
-	encoder.getSettings().zlibsettings.windowSize = 2048;
-	
-
-/*
-	const FREE_IMAGE_FORMAT fileType = FreeImage_GetFIFFromFilename(filename);
-	if(FIF_UNKNOWN == fileType)
-	{
-		printf("Can't save to unknown filetype %s\n", filename);
-		return false;
-	}
-
-	FIBITMAP* bitmap = FreeImage_Allocate(Width, Height, 32, 0x000000ff, 0x0000ff00, 0x00ff0000);
-	if(!bitmap)
-	{
-		printf("Failed to create freeimage for %s\n", filename);
-		return false;
-	}
-
-	const unsigned int* source = Data;
-	for( int y=0; y < Height; y++, source += Width )
-	{
-		unsigned int* scanline = (unsigned int*)FreeImage_GetScanLine(bitmap, Height - y - 1 );
-		memcpy(scanline, source, sizeof(source[0]) * Width);
-	}	
-	
-	FreeImage_SetTransparent(bitmap, false);
-	FIBITMAP* converted = FreeImage_ConvertTo24Bits(bitmap);
-	
-	
-	const bool result = !!FreeImage_Save(fileType, converted, filename);
-	if(!result)
-		printf("Failed to save to %s\n", filename);
-	
-	FreeImage_Unload(converted);
-	FreeImage_Unload(bitmap);
-	return result;
-*/
-	return true;
-}
-
-RGBAImage* RGBAImage::ReadFromFile(const char* filename)
-{
-  unsigned char* buffer;
-  unsigned char* image;
-  size_t buffersize, imagesize, i;
-  LodePNG_Decoder decoder;
-  
-  LodePNG_loadFile(&buffer, &buffersize, filename); /*load the image file with given filename*/
-  LodePNG_Decoder_init(&decoder);
-  LodePNG_Decoder_decode(&decoder, &image, &imagesize, buffer, buffersize); /*decode the png*/
-  
-  /*load and decode*/
-  /*if there's an error, display it, otherwise display information about the image*/
-  if(decoder.error) printf("error %u: %s\n", decoder.error, LodePNG_error_text(decoder.error));
-
-  int w = decoder.infoPng.width;
-  int h = decoder.infoPng.height;
-  
-
-  RGBAImage* result = new RGBAImage(w, h, filename);
-  // Copy the image over to our internal format, FreeImage has the scanlines bottom to top though.
-  unsigned int* dest = result->Data;
-  memcpy(dest, (void *)image, h*w*4);
-
-  /*cleanup decoder*/
-  free(image);
-  free(buffer);
-  LodePNG_Decoder_cleanup(&decoder);
-
-  return result;
-/*
-	const FREE_IMAGE_FORMAT fileType = FreeImage_GetFileType(filename);
-	if(FIF_UNKNOWN == fileType)
-	{
-		printf("Unknown filetype %s\n", filename);
-		return 0;
-	}
-	
-	FIBITMAP* freeImage = 0;
-	if(FIBITMAP* temporary = FreeImage_Load(fileType, filename, 0))
-	{
-		freeImage = FreeImage_ConvertTo32Bits(temporary);
-		FreeImage_Unload(temporary);
-	}
-	if(!freeImage)
-	{
-		printf( "Failed to load the image %s\n", filename);
-		return 0;
-	}
-
-	const int w = FreeImage_GetWidth(freeImage);
-	const int h = FreeImage_GetHeight(freeImage);
-
-	RGBAImage* result = new RGBAImage(w, h, filename);
-	// Copy the image over to our internal format, FreeImage has the scanlines bottom to top though.
-	unsigned int* dest = result->Data;
-	for( int y=0; y < h; y++, dest += w )
-	{
-		const unsigned int* scanline = (const unsigned int*)FreeImage_GetScanLine(freeImage, h - y - 1 );
-		memcpy(dest, scanline, sizeof(dest[0]) * w);
-	}	
-
-	FreeImage_Unload(freeImage);
-	return result;
-	return NULL;
-*/
-}
-
-
-int main(int argc, char **argv)
-{
-	CompareArgs args;
-	
-	if (!args.Parse_Args(argc, argv)) {
-		printf("%s", args.ErrorStr.c_str());
-		return -1;
-	} else {
-		if (args.Verbose) args.Print_Args();
-	}
-	
-	const bool passed = Yee_Compare(args);
-	if (passed) {
-		if(args.Verbose)
-			printf("PASS: %s\n", args.ErrorStr.c_str());
-	} else {
-		printf("FAIL: %s\n", args.ErrorStr.c_str());
-	}
-
-	return passed ? 0 : 1;
-}
-
diff --git a/tests/yee_compare.h b/tests/yee_compare.h
deleted file mode 100644
index 041ae4c..0000000
--- a/tests/yee_compare.h
+++ /dev/null
@@ -1,126 +0,0 @@
-#ifndef _yee_compare_h
-#define _yee_compare_h
-
-// source code modified for OpenSCAD, Sept 2011
-// original copyright notice follows:
-/*
-Metric
-RGBAImage.h
-Comapre Args
-Laplacian Pyramid
-Copyright (C) 2006 Yangli Hector Yee
-
-This program is free software; you can redistribute it and/or modify it under the terms of the
-GNU General Public License as published by the Free Software Foundation; either version 2 of the License,
-or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with this program;
-if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <string>
-
-class RGBAImage;
-
-// Args to pass into the comparison function
-class CompareArgs
-{
-public:
-	CompareArgs();
-	~CompareArgs();
-	bool Parse_Args(int argc, char **argv);	
-	void Print_Args();
-	
-	RGBAImage		*ImgA;				// Image A
-	RGBAImage		*ImgB;				// Image B
-	RGBAImage		*ImgDiff;			// Diff image
-	bool			Verbose;			// Print lots of text or not
-	bool			LuminanceOnly;		// Only consider luminance; ignore chroma channels in the comparison.
-	float			FieldOfView;		// Field of view in degrees
-	float			Gamma;				// The gamma to convert to linear color space
-	float			Luminance;			// the display's luminance
-	unsigned int	ThresholdPixels;	// How many pixels different to ignore
-	std::string		ErrorStr;			// Error string
-  // How much color to use in the metric.
-  // 0.0 is the same as LuminanceOnly = true,
-  // 1.0 means full strength.
-  float ColorFactor;
-  // How much to down sample image before comparing, in powers of 2.
-  int DownSample;
-};
-
-#define MAX_PYR_LEVELS 8
-
-class LPyramid
-{
-public:	
-	LPyramid(float *image, int width, int height);
-	virtual ~LPyramid();
-	float Get_Value(int x, int y, int level);
-protected:
-	float *Copy(float *img);
-	void Convolve(float *a, float *b);
-	
-	// Succesively blurred versions of the original image
-	float *Levels[MAX_PYR_LEVELS];
-
-	int Width;
-	int Height;
-};
-
-class CompareArgs;
-
-// Image comparison metric using Yee's method
-// References: A Perceptual Metric for Production Testing, Hector Yee, Journal of Graphics Tools 2004
-bool Yee_Compare(CompareArgs &args);
-
-/** Class encapsulating an image containing R,G,B,A channels.
- *
- * Internal representation assumes data is in the ABGR format, with the RGB
- * color channels premultiplied by the alpha value.  Premultiplied alpha is
- * often also called "associated alpha" - see the tiff 6 specification for some
- * discussion - http://partners.adobe.com/asn/developer/PDFS/TN/TIFF6.pdf
- *
- */
-class RGBAImage
-{
-	RGBAImage(const RGBAImage&);
-	RGBAImage& operator=(const RGBAImage&);
-public:
-	RGBAImage(int w, int h, const char *name = 0)
-	{
-		Width = w;
-		Height = h;
-		if (name) Name = name;
-		Data = new unsigned int[w * h];
-	};
-	~RGBAImage() { if (Data) delete[] Data; }
-	unsigned char Get_Red(unsigned int i) { return (Data[i] & 0xFF); }
-	unsigned char Get_Green(unsigned int i) { return ((Data[i]>>8) & 0xFF); }
-	unsigned char Get_Blue(unsigned int i) { return ((Data[i]>>16) & 0xFF); }
-	unsigned char Get_Alpha(unsigned int i) { return ((Data[i]>>24) & 0xFF); }
-	void Set(unsigned char r, unsigned char g, unsigned char b, unsigned char a, unsigned int i)
-	{ Data[i] = r | (g << 8) | (b << 16) | (a << 24); }
-	int Get_Width(void) const { return Width; }
-	int Get_Height(void) const { return Height; }
-	void Set(int x, int y, unsigned int d) { Data[x + y * Width] = d; }
-	unsigned int Get(int x, int y) const { return Data[x + y * Width]; }
-	unsigned int Get(int i) const { return Data[i]; }
-	const std::string &Get_Name(void) const { return Name; }
-   RGBAImage* DownSample() const;
-	
-	bool WriteToFile(const char* filename);
-	static RGBAImage* ReadFromFile(const char* filename);
-	
-protected:
-	int Width;
-	int Height;
-	std::string Name;
-	unsigned int *Data;
-};
-
-#endif