skia2/tests/PathOpsDRectTest.cpp

/*
 * Copyright 2012 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "PathOpsTestCommon.h"
#include "SkPathOpsCubic.h"
#include "SkPathOpsLine.h"
#include "SkPathOpsQuad.h"
#include "SkPathOpsRect.h"
#include "Test.h"

static const QuadPts quadTests[] = {
    {{{1, 1}, {2, 1}, {0, 2}}},
    {{{0, 0}, {1, 1}, {3, 1}}},
    {{{2, 0}, {1, 1}, {2, 2}}},
    {{{4, 0}, {0, 1}, {4, 2}}},
    {{{0, 0}, {0, 1}, {1, 1}}},
};

static const CubicPts cubicTests[] = {
    {{{2, 0}, {3, 1}, {2, 2}, {1, 1}}},
    {{{3, 1}, {2, 2}, {1, 1}, {2, 0}}},
    {{{3, 0}, {2, 1}, {3, 2}, {1, 1}}},
};

static const size_t quadTests_count = SK_ARRAY_COUNT(quadTests);
static const size_t cubicTests_count = SK_ARRAY_COUNT(cubicTests);

static void setRawBounds(const SkDQuad& quad, SkDRect* rect) {
    rect->set(quad[0]);
    rect->add(quad[1]);
    rect->add(quad[2]);
}

static void setRawBounds(const SkDCubic& cubic, SkDRect* rect) {
    rect->set(cubic[0]);
    rect->add(cubic[1]);
    rect->add(cubic[2]);
    rect->add(cubic[3]);
}

DEF_TEST(PathOpsDRect, reporter) {
    size_t index;
    SkDRect rect, rect2;
    for (index = 0; index < quadTests_count; ++index) {
        const QuadPts& q = quadTests[index];
        SkDQuad quad;
        quad.debugSet(q.fPts);
        SkASSERT(ValidQuad(quad));
        setRawBounds(quad, &rect);
        rect2.setBounds(quad);
        REPORTER_ASSERT(reporter, rect.intersects(rect2));
        // FIXME: add a recursive box subdivision method to verify that tight bounds is correct
        SkDPoint leftTop = {rect2.fLeft, rect2.fTop};
        REPORTER_ASSERT(reporter, rect.contains(leftTop));
        SkDPoint rightBottom = {rect2.fRight, rect2.fBottom};
        REPORTER_ASSERT(reporter, rect.contains(rightBottom));
    }
    for (index = 0; index < cubicTests_count; ++index) {
        const CubicPts& c = cubicTests[index];
        SkDCubic cubic;
        cubic.debugSet(c.fPts);
        SkASSERT(ValidCubic(cubic));
        setRawBounds(cubic, &rect);
        rect2.setBounds(cubic);
        REPORTER_ASSERT(reporter, rect.intersects(rect2));
        // FIXME: add a recursive box subdivision method to verify that tight bounds is correct
        SkDPoint leftTop = {rect2.fLeft, rect2.fTop};
        REPORTER_ASSERT(reporter, rect.contains(leftTop));
        SkDPoint rightBottom = {rect2.fRight, rect2.fBottom};
        REPORTER_ASSERT(reporter, rect.contains(rightBottom));
    }
}