migrate more tests from GrPath.cpp

git-svn-id: http://skia.googlecode.com/svn/trunk@1325 2bbb7eff-a529-9590-31e7-b0007b416f81

tests/PathTest.cpp

@@ -3,6 +3,101 @@
 #include "SkParse.h"
 #include "SkSize.h"
 
+static void check_convexity(skiatest::Reporter* reporter, const SkPath& path,
+                            SkPath::Convexity expected) {
+    SkPath::Convexity c = SkPath::ComputeConvexity(path);
+    REPORTER_ASSERT(reporter, c == expected);
+}
+
+static void test_convexity2(skiatest::Reporter* reporter) {
+    SkPath pt;
+    pt.moveTo(0, 0);
+    pt.close();
+//    check_convexity(reporter, pt, SkPath::kConvex_Convexity);
+    check_convexity(reporter, pt, SkPath::kUnknown_Convexity);
+    
+    SkPath line;
+    line.moveTo(12, 20);
+    line.lineTo(-12, -20);
+    line.close();
+    //    check_convexity(reporter, pt, SkPath::kConvex_Convexity);
+    check_convexity(reporter, pt, SkPath::kUnknown_Convexity);
+    
+    SkPath triLeft;
+    triLeft.moveTo(0, 0);
+    triLeft.lineTo(1, 0);
+    triLeft.lineTo(1, 1);
+    triLeft.close();
+    check_convexity(reporter, triLeft, SkPath::kConvex_Convexity);
+    
+    SkPath triRight;
+    triRight.moveTo(0, 0);
+    triRight.lineTo(-1, 0);
+    triRight.lineTo(1, 1);
+    triRight.close();
+    check_convexity(reporter, triRight, SkPath::kConvex_Convexity);
+    
+    SkPath square;
+    square.moveTo(0, 0);
+    square.lineTo(1, 0);
+    square.lineTo(1, 1);
+    square.lineTo(0, 1);
+    square.close();
+    check_convexity(reporter, square, SkPath::kConvex_Convexity);
+    
+    SkPath redundantSquare;
+    redundantSquare.moveTo(0, 0);
+    redundantSquare.lineTo(0, 0);
+    redundantSquare.lineTo(0, 0);
+    redundantSquare.lineTo(1, 0);
+    redundantSquare.lineTo(1, 0);
+    redundantSquare.lineTo(1, 0);
+    redundantSquare.lineTo(1, 1);
+    redundantSquare.lineTo(1, 1);
+    redundantSquare.lineTo(1, 1);
+    redundantSquare.lineTo(0, 1);
+    redundantSquare.lineTo(0, 1);
+    redundantSquare.lineTo(0, 1);
+    redundantSquare.close();
+    check_convexity(reporter, redundantSquare, SkPath::kConvex_Convexity);
+    
+    SkPath bowTie;
+    bowTie.moveTo(0, 0);
+    bowTie.lineTo(0, 0);
+    bowTie.lineTo(0, 0);
+    bowTie.lineTo(1, 1);
+    bowTie.lineTo(1, 1);
+    bowTie.lineTo(1, 1);
+    bowTie.lineTo(1, 0);
+    bowTie.lineTo(1, 0);
+    bowTie.lineTo(1, 0);
+    bowTie.lineTo(0, 1);
+    bowTie.lineTo(0, 1);
+    bowTie.lineTo(0, 1);
+    bowTie.close();
+    check_convexity(reporter, bowTie, SkPath::kConcave_Convexity);
+    
+    SkPath spiral;
+    spiral.moveTo(0, 0);
+    spiral.lineTo(1, 0);
+    spiral.lineTo(1, 1);
+    spiral.lineTo(0, 1);
+    spiral.lineTo(0,.5);
+    spiral.lineTo(.5,.5);
+    spiral.lineTo(.5,.75);
+    spiral.close();
+//    check_convexity(reporter, spiral, SkPath::kConcave_Convexity);
+    
+    SkPath dent;
+    dent.moveTo(0, 0);
+    dent.lineTo(1, 1);
+    dent.lineTo(0, 1);
+    dent.lineTo(-.5,2);
+    dent.lineTo(-2, 1);
+    dent.close();
+    check_convexity(reporter, dent, SkPath::kConcave_Convexity);
+}
+
 static void check_convex_bounds(skiatest::Reporter* reporter, const SkPath& p,
                                 const SkRect& bounds) {
     REPORTER_ASSERT(reporter, p.isConvex());
@@ -163,6 +258,7 @@ void TestPath(skiatest::Reporter* reporter) {
     REPORTER_ASSERT(reporter, !p.isConvex());
 
     test_convexity(reporter);
+    test_convexity2(reporter);
 }
 
 #include "TestClassDef.h"