a3d901099d
git-svn-id: http://skia.googlecode.com/svn/trunk@447 2bbb7eff-a529-9590-31e7-b0007b416f81
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
#include "Test.h"
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#include "SkPath.h"
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#include "SkLineClipper.h"
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#include "SkEdgeClipper.h"
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static void test_intersectline(skiatest::Reporter* reporter) {
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static const SkScalar L = 0;
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static const SkScalar T = 0;
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static const SkScalar R = SkIntToScalar(100);
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static const SkScalar B = SkIntToScalar(100);
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static const SkScalar CX = SkScalarHalf(L + R);
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static const SkScalar CY = SkScalarHalf(T + B);
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static const SkRect gR = { L, T, R, B };
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size_t i;
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SkPoint dst[2];
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static const SkPoint gEmpty[] = {
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// sides
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{ L, CY }, { L - 10, CY },
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{ R, CY }, { R + 10, CY },
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{ CX, T }, { CX, T - 10 },
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{ CX, B }, { CX, B + 10 },
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// corners
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{ L, T }, { L - 10, T - 10 },
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{ L, B }, { L - 10, B + 10 },
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{ R, T }, { R + 10, T - 10 },
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{ R, B }, { R + 10, B + 10 },
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};
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for (i = 0; i < SK_ARRAY_COUNT(gEmpty); i += 2) {
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bool valid = SkLineClipper::IntersectLine(&gEmpty[i], gR, dst);
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if (valid) {
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SkDebugf("----- [%d] %g %g -> %g %g\n", i/2, dst[0].fX, dst[0].fY, dst[1].fX, dst[1].fY);
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}
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REPORTER_ASSERT(reporter, !valid);
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}
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static const SkPoint gFull[] = {
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// diagonals, chords
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{ L, T }, { R, B },
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{ L, B }, { R, T },
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{ CX, T }, { CX, B },
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{ L, CY }, { R, CY },
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{ CX, T }, { R, CY },
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{ CX, T }, { L, CY },
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{ L, CY }, { CX, B },
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{ R, CY }, { CX, B },
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// edges
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{ L, T }, { L, B },
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{ R, T }, { R, B },
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{ L, T }, { R, T },
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{ L, B }, { R, B },
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};
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for (i = 0; i < SK_ARRAY_COUNT(gFull); i += 2) {
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bool valid = SkLineClipper::IntersectLine(&gFull[i], gR, dst);
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if (!valid || memcmp(&gFull[i], dst, sizeof(dst))) {
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SkDebugf("++++ [%d] %g %g -> %g %g\n", i/2, dst[0].fX, dst[0].fY, dst[1].fX, dst[1].fY);
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}
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REPORTER_ASSERT(reporter, valid && !memcmp(&gFull[i], dst, sizeof(dst)));
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}
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static const SkPoint gPartial[] = {
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{ L - 10, CY }, { CX, CY }, { L, CY }, { CX, CY },
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{ CX, T - 10 }, { CX, CY }, { CX, T }, { CX, CY },
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{ R + 10, CY }, { CX, CY }, { R, CY }, { CX, CY },
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{ CX, B + 10 }, { CX, CY }, { CX, B }, { CX, CY },
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// extended edges
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{ L, T - 10 }, { L, B + 10 }, { L, T }, { L, B },
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{ R, T - 10 }, { R, B + 10 }, { R, T }, { R, B },
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{ L - 10, T }, { R + 10, T }, { L, T }, { R, T },
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{ L - 10, B }, { R + 10, B }, { L, B }, { R, B },
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};
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for (i = 0; i < SK_ARRAY_COUNT(gPartial); i += 4) {
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bool valid = SkLineClipper::IntersectLine(&gPartial[i], gR, dst);
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if (!valid || memcmp(&gPartial[i+2], dst, sizeof(dst))) {
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SkDebugf("++++ [%d] %g %g -> %g %g\n", i/2, dst[0].fX, dst[0].fY, dst[1].fX, dst[1].fY);
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}
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REPORTER_ASSERT(reporter, valid &&
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!memcmp(&gPartial[i+2], dst, sizeof(dst)));
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}
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}
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void TestClipper(skiatest::Reporter* reporter) {
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test_intersectline(reporter);
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("Clipper", TestClipperClass, TestClipper)
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