skia2/tests/PathOpsBuilderTest.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 "PathOpsTestCommon.h"
#include "SkBitmap.h"
#include "Test.h"

DEF_TEST(PathOpsBuilder, reporter) {
    SkOpBuilder builder;
    SkPath result;
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isEmpty());

    builder.add(result, kDifference_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isEmpty());

    builder.add(result, kUnion_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isEmpty());

    SkPath rectPath;
    rectPath.setFillType(SkPath::kEvenOdd_FillType);
    rectPath.addRect(0, 1, 2, 3, SkPath::kCW_Direction);
    builder.add(rectPath, kUnion_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    bool closed;
    SkPath::Direction dir;
    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
    REPORTER_ASSERT(reporter, closed);
    REPORTER_ASSERT(reporter, dir == SkPath::kCCW_Direction);
    int pixelDiff = comparePaths(reporter, __FUNCTION__, rectPath, result);
    REPORTER_ASSERT(reporter, pixelDiff == 0);

    rectPath.reset();
    rectPath.setFillType(SkPath::kEvenOdd_FillType);
    rectPath.addRect(0, 1, 2, 3, SkPath::kCCW_Direction);
    builder.add(rectPath, kUnion_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
    REPORTER_ASSERT(reporter, closed);
    REPORTER_ASSERT(reporter, dir == SkPath::kCCW_Direction);
    REPORTER_ASSERT(reporter, rectPath == result);

    builder.add(rectPath, kDifference_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isEmpty());

    SkPath rect2, rect3;
    rect2.addRect(2, 1, 4, 3, SkPath::kCW_Direction);
    rect3.addRect(4, 1, 5, 3, SkPath::kCCW_Direction);
    builder.add(rectPath, kUnion_SkPathOp);
    builder.add(rect2, kUnion_SkPathOp);
    builder.add(rect3, kUnion_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
    REPORTER_ASSERT(reporter, closed);
    SkRect expected;
    expected.set(0, 1, 5, 3);
    REPORTER_ASSERT(reporter, result.getBounds() == expected);

    SkPath circle1, circle2, circle3;
    circle1.addCircle(5, 6, 4, SkPath::kCW_Direction);
    circle2.addCircle(7, 4, 8, SkPath::kCCW_Direction);
    circle3.addCircle(6, 5, 6, SkPath::kCW_Direction);
    SkPath opCompare;
    Op(circle1, circle2, kUnion_SkPathOp, &opCompare);
    Op(opCompare, circle3, kDifference_SkPathOp, &opCompare);
    builder.add(circle1, kUnion_SkPathOp);
    builder.add(circle2, kUnion_SkPathOp);
    builder.add(circle3, kDifference_SkPathOp);
    REPORTER_ASSERT(reporter, builder.resolve(&result));
    pixelDiff = comparePaths(reporter, __FUNCTION__, opCompare, result);
    REPORTER_ASSERT(reporter, pixelDiff == 0);
}

DEF_TEST(BuilderIssue3838, reporter) {
    SkPath path;
    path.moveTo(200, 170);
    path.lineTo(220, 170);
    path.lineTo(220, 230);
    path.lineTo(240, 230);
    path.lineTo(240, 210);
    path.lineTo(180, 210);
    path.lineTo(180, 190);
    path.lineTo(260, 190);
    path.lineTo(260, 250);
    path.lineTo(200, 250);
    path.lineTo(200, 170);
    path.close();
    SkPath path2;
    SkOpBuilder builder;
    builder.add(path, kUnion_SkPathOp);
    builder.resolve(&path2);
    int pixelDiff = comparePaths(reporter, __FUNCTION__, path, path2);
    REPORTER_ASSERT(reporter, pixelDiff == 0);
}

DEF_TEST(BuilderIssue3838_2, reporter) {
    SkPath path;
    path.addCircle(100, 100, 50);

    SkOpBuilder builder;
    builder.add(path, kUnion_SkPathOp);
    builder.add(path, kUnion_SkPathOp);

    SkPath result;
    builder.resolve(&result);
    int pixelDiff = comparePaths(reporter, __FUNCTION__, path, result);
    REPORTER_ASSERT(reporter, pixelDiff == 0);
}

DEF_TEST(BuilderIssue3838_3, reporter) {
    SkPath path;
    path.moveTo(40, 10);
    path.lineTo(60, 10);
    path.lineTo(60, 30);
    path.lineTo(40, 30);
    path.lineTo(40, 10);
    path.moveTo(41, 11);
    path.lineTo(41, 29);
    path.lineTo(59, 29);
    path.lineTo(59, 11);
    path.lineTo(41, 11);

    SkOpBuilder builder;
    builder.add(path, kUnion_SkPathOp);
    SkPath result;
    builder.resolve(&result);
    int pixelDiff = comparePaths(reporter, __FUNCTION__, path, result);
    REPORTER_ASSERT(reporter, pixelDiff == 0);
}