fix minor skp-found bugs

tests/PathOpsOpLoopThreadedTest.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "PathOpsExtendedTest.h"
+#include "PathOpsThreadedCommon.h"
+
+static void testOpLoopsMain(PathOpsThreadState* data) {
+#if DEBUG_SHOW_TEST_NAME
+    strncpy(DEBUG_FILENAME_STRING, "", DEBUG_FILENAME_STRING_LENGTH);
+#endif
+    SkASSERT(data);
+    PathOpsThreadState& state = *data;
+    char pathStr[1024];  // gdb: set print elements 400
+    bool progress = state.fReporter->verbose(); // FIXME: break out into its own parameter?
+    if (progress) {
+        sk_bzero(pathStr, sizeof(pathStr));
+    }
+    for (int a = 0 ; a < 6; ++a) {
+        for (int b = a + 1 ; b < 7; ++b) {
+            for (int c = 0 ; c < 6; ++c) {
+                for (int d = c + 1 ; d < 7; ++d) {
+        // define 4 points that form two lines that often cross; one line is (a, b) (c, d)
+        SkVector v = {SkIntToScalar(a - c), SkIntToScalar(b - d)};
+        SkPoint midA = { SkIntToScalar(a * state.fA + c * (6 - state.fA)) / 6,
+                         SkIntToScalar(b * state.fA + d * (6 - state.fA)) / 6 };
+        SkPoint midB = { SkIntToScalar(a * state.fB + c * (6 - state.fB)) / 6,
+                         SkIntToScalar(b * state.fB + d * (6 - state.fB)) / 6 };
+        SkPoint endC = { midA.fX + v.fY * state.fC / 3,
+                          midA.fY + v.fX * state.fC / 3 };
+        SkPoint endD = { midB.fX - v.fY * state.fD / 3,
+                          midB.fY + v.fX * state.fD / 3 };
+        SkPath pathA, pathB;
+        if (progress) {
+            char* str = pathStr;
+            str += sprintf(str, "    path.moveTo(%d,%d);\n", a, b);
+            str += sprintf(str, "    path.cubicTo(%d,%d, %1.9gf,%1.9gf, %1.9gf,%1.9gf);\n",
+                    c, d, endC.fX, endC.fY, endD.fX, endD.fY);
+            str += sprintf(str, "    path.close();\n");
+            str += sprintf(str, "    pathB.moveTo(%d,%d);\n", c, d);
+            str += sprintf(str, "    pathB.cubicTo(%1.9gf,%1.9gf, %1.9gf,%1.9gf, %d,%d);\n",
+                    endC.fX, endC.fY, endD.fX, endD.fY, a, b);
+            str += sprintf(str, "    pathB.close();\n");
+        }
+        pathA.moveTo(SkIntToScalar(a), SkIntToScalar(b));
+        pathA.cubicTo(SkIntToScalar(c), SkIntToScalar(d), endC.fX, endC.fY, endD.fX, endD.fY);
+        pathA.close();
+        pathB.moveTo(SkIntToScalar(c), SkIntToScalar(d));
+        pathB.cubicTo(endC.fX, endC.fY, endD.fX, endD.fY, SkIntToScalar(a), SkIntToScalar(b));
+        pathB.close();
+//        SkDebugf("%s\n", pathStr);
+        if (progress) {
+            outputProgress(state.fPathStr, pathStr, kIntersect_PathOp);
+        }
+        testThreadedPathOp(state.fReporter, pathA, pathB, kIntersect_PathOp, "loops");
+                }
+            }
+        }
+    }
+}
+
+DEF_TEST(PathOpsOpLoopsThreaded, reporter) {
+    int threadCount = initializeTests(reporter, "cubicOp");
+    PathOpsThreadedTestRunner testRunner(reporter, threadCount);
+    for (int a = 0; a < 6; ++a) {  // outermost
+        for (int b = a + 1; b < 7; ++b) {
+            for (int c = 0 ; c < 6; ++c) {
+                for (int d = c + 1; d < 7; ++d) {
+                    *testRunner.fRunnables.append() = SkNEW_ARGS(PathOpsThreadedRunnable,
+                            (&testOpLoopsMain, a, b, c, d, &testRunner));
+                }
+            }
+            if (!reporter->allowExtendedTest()) goto finish;
+        }
+    }
+finish:
+    testRunner.render();
+    ShowTestArray();
+}
+
+DEF_TEST(PathOpsOpLoops, reporter) {
+    (void) initializeTests(reporter, "cubicOp");
+    PathOpsThreadState state;
+    state.fReporter = reporter;
+    SkBitmap bitmap;
+    state.fBitmap = &bitmap;
+    char pathStr[PATH_STR_SIZE];
+    state.fPathStr = pathStr;
+    for (state.fA = 0; state.fA < 6; ++state.fA) {  // outermost
+        for (state.fB = state.fA + 1; state.fB < 7; ++state.fB) {
+            for (state.fC = 0 ; state.fC < 6; ++state.fC) {
+                for (state.fD = state.fC + 1; state.fD < 7; ++state.fD) {
+                    testOpLoopsMain(&state);
+                }
+            }
+            if (!reporter->allowExtendedTest()) goto finish;
+        }
+    }
+finish:
+    ShowTestArray();
+}