path ops work in progress

standardize tests
use SK_ARRAY_COUNT everywhere
debug why x87 differs from SIMD 64
various platform specific fixes

git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 116 insertions, 0 deletions

diff --git a/tests/PathOpsAngleTest.cpp b/tests/PathOpsAngleTest.cpp
new file mode 100644
index 0000000000..e594bb65bf
--- /dev/null
+++ b/tests/PathOpsAngleTest.cpp
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "SkOpSegment.h"
+#include "Test.h"
+
+static const SkPoint cubics[][4] = {
+    {{0, 1}, {2, 6}, {4, 2}, {5, 3}}
+};
+
+static const SkPoint lines[][2] = {
+    {{6, 2}, {2, 4}}
+};
+
+struct SortSet {
+    const SkPoint* ptData;
+    int ptCount;
+    double tStart;
+    double tEnd;
+};
+
+static const SortSet set1[] = {
+    {lines[0], 2, 0.54070336, 0.388888889},
+    {cubics[0], 4, 0.666669871, 0.405037112},
+    {lines[0], 2, 0.54070336, 0.9140625},
+    {cubics[0], 4, 0.666669871, 0.875},
+};
+
+static const SortSet set2[] = {
+    {lines[0], 2, 0.574074074, 0.388888889},
+    {cubics[0], 4, 0.666666667, 0.405037112},
+    {lines[0], 2, 0.574074074, 0.9140625},
+    {cubics[0], 4, 0.666666667, 0.875},
+};
+
+struct SortSetTests {
+    const SortSet* set;
+    size_t count;
+};
+
+static const SortSetTests tests[] = {
+    { set1, SK_ARRAY_COUNT(set1) },
+    { set2, SK_ARRAY_COUNT(set2) }
+};
+
+static void setup(const SortSet* set, const size_t idx, SkPoint const ** data, 
+        SkPoint* reverse, SkOpSegment* seg) {
+    SkPoint start, end;
+    if (set[idx].ptCount == 2) {
+        if (set[idx].tStart < set[idx].tEnd) {
+            *data = set[idx].ptData;
+        } else {
+            reverse[0] = set[idx].ptData[1];
+            reverse[1] = set[idx].ptData[0];
+            *data = reverse;
+        }
+        seg->addLine(*data, false, false);
+        SkDLine dLine;
+        dLine.set(set[idx].ptData);
+        start = dLine.xyAtT(set[idx].tStart).asSkPoint();
+        end = dLine.xyAtT(set[idx].tEnd).asSkPoint();
+    } else if (set[idx].ptCount == 4) {
+        if (set[idx].tStart < set[idx].tEnd) {
+            *data = set[idx].ptData;
+        } else {
+            reverse[0] = set[idx].ptData[3];
+            reverse[1] = set[idx].ptData[2];
+            reverse[2] = set[idx].ptData[1];
+            reverse[3] = set[idx].ptData[0];
+            *data = reverse;
+        }
+        seg->addCubic(*data, false, false);
+        SkDCubic dCubic;
+        dCubic.set(set[idx].ptData);
+        start = dCubic.xyAtT(set[idx].tStart).asSkPoint();
+        end = dCubic.xyAtT(set[idx].tEnd).asSkPoint();
+    }
+    seg->addT(NULL, start, set[idx].tStart);
+    seg->addT(NULL, end, set[idx].tEnd);
+    seg->addT(NULL, set[idx].ptData[0], 0);
+    seg->addT(NULL, set[idx].ptData[set[idx].ptCount - 1], 1);
+}
+
+static void PathOpsAngleTest(skiatest::Reporter* reporter) {
+    for (size_t index = 0; index < SK_ARRAY_COUNT(tests); ++index) {
+        const SortSetTests& test = tests[index];
+        for (size_t idxL = 0; idxL < test.count - 1; ++idxL) {
+            SkOpSegment lesser, greater;
+            SkPoint lesserReverse[4], greaterReverse[4];
+            const SkPoint* lesserData, * greaterData;
+            const SortSet* set = test.set;
+            setup(set, idxL, &lesserData, lesserReverse, &lesser);
+            size_t idxG = idxL + 1;
+            setup(set, idxG, &greaterData, greaterReverse, &greater);
+            SkOpAngle first, second;
+            first.set(lesserData, (SkPath::Verb) (set[idxL].ptCount - 1), &lesser,
+                    0, 1, lesser.spans());
+            first.setSpans();
+            second.set(greaterData, (SkPath::Verb) (set[idxG].ptCount - 1), &greater,
+                    0, 1, greater.spans());
+            second.setSpans();
+            bool compare = first < second;
+            if (!compare) {
+                SkDebugf("%s test[%d]:  lesser[%d] > greater[%d]\n", __FUNCTION__,
+                        index, idxL,  idxG);
+            }
+            REPORTER_ASSERT(reporter, compare);
+        }
+    }
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS_SHORT(PathOpsAngleTest)