AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Format more consistently with the rest of Skia.

Browse Source 
git-svn-id: http://skia.googlecode.com/svn/trunk@106 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
turk@google.com 2009-03-04 01:33:35 +00:00
parent ef772ddb86
commit 7d3a58a5e4
3 changed files with 110 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/SkCubicClipper.cpp
View File

@ -77,7 +77,7 @@ static bool chopMonoCubicAtY(SkPoint pts[4], SkScalar y, SkScalar* t) {
#else // BISECTION // Linear convergence, typically 16 iterations.
// Check that the endpoints straddle zero.
SkScalar tNeg, tPos; // Parameter where the function is negative and positive, respectively.
SkScalar tNeg, tPos; // Negative and positive function parameters.
if (ycrv[0] < 0) {
if (ycrv[3] < 0)
return false;

206
tests/ClipCubicTest.cpp
View File

@ -15,28 +15,27 @@ static void PrintCurve(const char *name, const SkPoint crv[4]) {
}
static bool CurvesAreEqual(
const SkPoint c0[4], const SkPoint c1[4], float tol) {
for (int i = 0; i < 4; i++) {
if (SkScalarAbs(c0[i].fX - c1[i].fX) > SkFloatToScalar(tol) ||
SkScalarAbs(c0[i].fY - c1[i].fY) > SkFloatToScalar(tol)
) {
PrintCurve("c0", c0);
PrintCurve("c1", c1);
return false;
}
}
return true;
static bool CurvesAreEqual(const SkPoint c0[4],
const SkPoint c1[4],
float tol) {
for (int i = 0; i < 4; i++) {
if (SkScalarAbs(c0[i].fX - c1[i].fX) > SkFloatToScalar(tol) ||
SkScalarAbs(c0[i].fY - c1[i].fY) > SkFloatToScalar(tol)
) {
PrintCurve("c0", c0);
PrintCurve("c1", c1);
return false;
}
}
return true;
}
static SkPoint* SetCurve(
float x0, float y0,
float x1, float y1,
float x2, float y2,
float x3, float y3,
SkPoint crv[4]
) {
static SkPoint* SetCurve(float x0, float y0,
float x1, float y1,
float x2, float y2,
float x3, float y3,
SkPoint crv[4]) {
crv[0].fX = SkFloatToScalar(x0); crv[0].fY = SkFloatToScalar(y0);
crv[1].fX = SkFloatToScalar(x1); crv[1].fY = SkFloatToScalar(y1);
crv[2].fX = SkFloatToScalar(x2); crv[2].fY = SkFloatToScalar(y2);
@ -46,103 +45,96 @@ static SkPoint* SetCurve(
static void TestCubicClipping(skiatest::Reporter* reporter) {
static SkPoint crv[4] = {
{ SkFloatToScalar(0), SkFloatToScalar(0) },
{ SkFloatToScalar(2), SkFloatToScalar(3) },
{ SkFloatToScalar(1), SkFloatToScalar(10) },
{ SkFloatToScalar(4), SkFloatToScalar(12) }
};
static SkPoint crv[4] = {
{ SkFloatToScalar(0), SkFloatToScalar(0) },
{ SkFloatToScalar(2), SkFloatToScalar(3) },
{ SkFloatToScalar(1), SkFloatToScalar(10) },
{ SkFloatToScalar(4), SkFloatToScalar(12) }
};
SkCubicClipper clipper;
SkPoint clipped[4], shouldbe[4];
SkIRect clipRect;
bool success;
const float tol = 1e-4;
SkCubicClipper clipper;
SkPoint clipped[4], shouldbe[4];
SkIRect clipRect;
bool success;
const float tol = 1e-4;
// Test no clip, with plenty of room.
clipRect.set(-2, -2, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe
), tol));
// Test no clip, with plenty of room.
clipRect.set(-2, -2, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe), tol));
// Test no clip, touching first point.
clipRect.set(-2, 0, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe
), tol));
// Test no clip, touching first point.
clipRect.set(-2, 0, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe), tol));
// Test no clip, touching last point.
clipRect.set(-2, -2, 6, 12);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe
), tol));
// Test no clip, touching last point.
clipRect.set(-2, -2, 6, 12);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0, 2, 3, 1, 10, 4, 12, shouldbe), tol));
// Test all clip.
clipRect.set(-2, 14, 6, 20);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == false);
// Test all clip.
clipRect.set(-2, 14, 6, 20);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == false);
// Test clip at 1.
clipRect.set(-2, 1, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0.5126125216, 1,
1.841195941, 4.337081432,
1.297019958, 10.19801331,
4, 12,
shouldbe
), tol));
// Test clip at 1.
clipRect.set(-2, 1, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0.5126125216, 1,
1.841195941, 4.337081432,
1.297019958, 10.19801331,
4, 12,
shouldbe), tol));
// Test clip at 2.
clipRect.set(-2, 2, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
00.8412352204, 2,
1.767683744, 5.400758266,
1.55052948, 10.36701965,
4, 12,
shouldbe
), tol));
// Test clip at 2.
clipRect.set(-2, 2, 6, 14);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
00.8412352204, 2,
1.767683744, 5.400758266,
1.55052948, 10.36701965,
4, 12,
shouldbe), tol));
// Test clip at 11.
clipRect.set(-2, -2, 6, 11);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0,
1.742904663, 2.614356995,
1.207521796, 8.266430855,
3.026495695, 11,
shouldbe
), tol));
// Test clip at 11.
clipRect.set(-2, -2, 6, 11);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0,
1.742904663, 2.614356995,
1.207521796, 8.266430855,
3.026495695, 11,
shouldbe), tol));
// Test clip at 10.
clipRect.set(-2, -2, 6, 10);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0,
1.551193237, 2.326789856,
1.297736168, 7.059780121,
2.505550385, 10,
shouldbe
), tol));
// Test clip at 10.
clipRect.set(-2, -2, 6, 10);
clipper.setClip(clipRect);
success = clipper.clipCubic(crv, clipped);
REPORTER_ASSERT(reporter, success == true);
REPORTER_ASSERT(reporter, CurvesAreEqual(clipped, SetCurve(
0, 0,
1.551193237, 2.326789856,
1.297736168, 7.059780121,
2.505550385, 10,
shouldbe), tol));
}