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authorGravatar robertphillips <robertphillips@google.com>2014-11-05 08:06:40 -0800
committerGravatar Commit bot <commit-bot@chromium.org>2014-11-05 08:06:40 -0800
commit2b9ee63c2423167cf39d7a5027db944057c74cfd (patch)
treeeee5f22a2dc23ae5800a6c669ac3558d3587b0a6 /tests
parente974c6244c92d32a0e4fe5639a913e78f101a056 (diff)
Add unit test for SkDashPathEffect::asPoints' culling
This is a follow on to (Crop the fast path dashed lines to the cull rect - https://codereview.chromium.org/699623003/) Review URL: https://codereview.chromium.org/701133002
Diffstat (limited to 'tests')
-rw-r--r--tests/DashPathEffectTest.cpp67
1 files changed, 67 insertions, 0 deletions
diff --git a/tests/DashPathEffectTest.cpp b/tests/DashPathEffectTest.cpp
index 1e53058de8..228aee9031 100644
--- a/tests/DashPathEffectTest.cpp
+++ b/tests/DashPathEffectTest.cpp
@@ -1,3 +1,10 @@
+/*
+ * 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 "Test.h"
#include "SkDashPathEffect.h"
@@ -19,3 +26,63 @@ DEF_TEST(DashPathEffectTest_crbug_348821, r) {
buffer.writeFlattenable(dash);
REPORTER_ASSERT(r, buffer.bytesWritten() > 12); // We'd write 12 if broken, >=40 if not.
}
+
+// Test out the asPoint culling behavior.
+DEF_TEST(DashPathEffectTest_asPoints, r) {
+
+ const SkScalar intervals[] = { 1.0f, 1.0f };
+ const int count = 2;
+ SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, count, 0.0f));
+
+ SkRect cull = SkRect::MakeWH(1.0f, 1.0f);
+
+ const struct {
+ SkPoint fPts[2];
+ bool fExpectedResult;
+ } testCases[] = {
+ { { { -5.0f, 0.5f }, { -4.0f, 0.5f } }, false }, // off to the left
+ { { { 4.0f, 0.5f }, { 5.0f, 0.5f } }, false }, // off to the right
+ { { { 0.5f, 4.0f }, { 0.5f, 5.0f } }, false }, // off the bottom
+ { { { 0.5f, -5.0f }, { 0.5f, -4.0f } }, false }, // off the top
+ { { { 0.5f, 0.2f }, { 0.5f, 0.8f } }, true }, // entirely inside vertical
+ { { { 0.2f, 0.5f }, { 0.8f, 0.5f } }, true }, // entirely inside horizontal
+ { { { 0.5f, -5.0f }, { 0.5f, 5.0f } }, true }, // straddles both sides vertically
+ { { { -5.0f, 0.5f }, { 5.0f, 0.5f } }, true }, // straddles both sides horizontally
+ { { { 0.5f, -5.0f }, { 0.5f, 0.5f } }, true }, // straddles top
+ { { { 0.5f, 5.0f }, { 0.5f, 0.5f } }, true }, // straddles bottom
+ { { { -5.0f, 0.5f }, { 0.5f, 0.5f } }, true }, // straddles left
+ { { { 5.0f, 0.5f }, { 0.5f, 0.5f } }, true }, // straddles right
+ { { { 0.5f, 0.5f }, { 0.5f, 0.5f } }, false }, // zero length
+ };
+
+ SkPaint paint;
+ paint.setStyle(SkPaint::kStroke_Style);
+ paint.setStrokeWidth(1.0f);
+ SkStrokeRec rec(paint);
+
+ static const int kNumMats = 3;
+ SkMatrix mats[kNumMats];
+ mats[0].reset();
+ mats[1].setRotate(90, 0.5f, 0.5f);
+ mats[2].setTranslate(10.0f, 10.0f);
+
+ for (int i = 0; i < kNumMats; ++i) {
+ for (int j = 0; j < (int)SK_ARRAY_COUNT(testCases); ++j) {
+ for (int k = 0; k < 2; ++k) { // exercise alternating endpoints
+ SkPathEffect::PointData results;
+ SkPath src;
+
+ src.moveTo(testCases[j].fPts[k]);
+ src.lineTo(testCases[j].fPts[(k+1)%2]);
+
+ bool actualResult = dash->asPoints(&results, src, rec, mats[i], &cull);
+ if (i < 2) {
+ REPORTER_ASSERT(r, actualResult == testCases[j].fExpectedResult);
+ } else {
+ // On the third pass all the lines should be outside the translated cull rect
+ REPORTER_ASSERT(r, !actualResult);
+ }
+ }
+ }
+ }
+}