Series of tests to ensure correct results of the winding rule. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". Testing default clip PASS pixelDataAtPoint()[0] is within 5 of 0 PASS pixelDataAtPoint()[1] is within 5 of 255 PASS pixelDataAtPoint()[2] is within 5 of 0 PASS pixelDataAtPoint()[3] is within 5 of 255 Testing nonzero clip PASS pixelDataAtPoint()[0] is within 5 of 0 PASS pixelDataAtPoint()[1] is within 5 of 255 PASS pixelDataAtPoint()[2] is within 5 of 0 PASS pixelDataAtPoint()[3] is within 5 of 255 Testing evenodd clip PASS pixelDataAtPoint()[0] is within 5 of 255 PASS pixelDataAtPoint()[1] is within 5 of 0 PASS pixelDataAtPoint()[2] is within 5 of 0 PASS pixelDataAtPoint()[3] is within 5 of 255 PASS successfullyParsed is true TEST COMPLETE