skia2/tests/PathOpsSimplifyQuadThreadedTest.cpp
commit-bot@chromium.org 4431e7757c Mike R: please sanity check SkPostConfig.h
Mike K: please sanity check Test.cpp and skia_test.cpp

Feel free to look at the rest, but I don't expect any in depth review of path ops innards.

Path Ops first iteration used QuickSort to order segments radiating from an intersection to compute the winding rule.

This revision uses a circular sort instead. Breaking out the circular sort into its own long-lived structure (SkOpAngle) allows doing less work and provides a home for caching additional sorting data.

The circle sort is more stable than the former sort, has a robust ordering and fewer exceptions. It finds unsortable ordering less often. It is less reliant on the initial curve  tangent, using convex hulls instead whenever it can.

Additional debug validation makes sure that the computed structures are self-consistent. A new visualization tool helps verify that the angle ordering is correct.

The 70+M tests pass with this change on Windows, Mac, Linux 32 and Linux 64 in debug and release.

R=mtklein@google.com, reed@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/131103009

git-svn-id: http://skia.googlecode.com/svn/trunk@14183 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-04-14 17:08:59 +00:00

95 lines
3.8 KiB
C++

/*
* 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 "PathOpsExtendedTest.h"
#include "PathOpsThreadedCommon.h"
static void testSimplifyQuadsMain(PathOpsThreadState* data)
{
SkASSERT(data);
PathOpsThreadState& state = *data;
char pathStr[1024];
bool progress = state.fReporter->verbose(); // FIXME: break out into its own parameter?
if (progress) {
sk_bzero(pathStr, sizeof(pathStr));
}
int ax = state.fA & 0x03;
int ay = state.fA >> 2;
int bx = state.fB & 0x03;
int by = state.fB >> 2;
int cx = state.fC & 0x03;
int cy = state.fC >> 2;
int dx = state.fD & 0x03;
int dy = state.fD >> 2;
for (int e = 0 ; e < 16; ++e) {
int ex = e & 0x03;
int ey = e >> 2;
for (int f = e ; f < 16; ++f) {
int fx = f & 0x03;
int fy = f >> 2;
for (int g = f ; g < 16; ++g) {
int gx = g & 0x03;
int gy = g >> 2;
for (int h = g ; h < 16; ++h) {
int hx = h & 0x03;
int hy = h >> 2;
SkPath path, out;
path.setFillType(SkPath::kWinding_FillType);
path.moveTo(SkIntToScalar(ax), SkIntToScalar(ay));
path.quadTo(SkIntToScalar(bx), SkIntToScalar(by),
SkIntToScalar(cx), SkIntToScalar(cy));
path.lineTo(SkIntToScalar(dx), SkIntToScalar(dy));
path.close();
path.moveTo(SkIntToScalar(ex), SkIntToScalar(ey));
path.lineTo(SkIntToScalar(fx), SkIntToScalar(fy));
path.quadTo(SkIntToScalar(gx), SkIntToScalar(gy),
SkIntToScalar(hx), SkIntToScalar(hy));
path.close();
if (progress) {
// gdb: set print elements 400
char* str = pathStr;
str += sprintf(str, " path.moveTo(%d, %d);\n", ax, ay);
str += sprintf(str, " path.quadTo(%d, %d, %d, %d);\n", bx, by, cx, cy);
str += sprintf(str, " path.lineTo(%d, %d);\n", dx, dy);
str += sprintf(str, " path.close();\n");
str += sprintf(str, " path.moveTo(%d, %d);\n", ex, ey);
str += sprintf(str, " path.lineTo(%d, %d);\n", fx, fy);
str += sprintf(str, " path.quadTo(%d, %d, %d, %d);\n", gx, gy, hx, hy);
str += sprintf(str, " path.close();\n");
outputProgress(state.fPathStr, pathStr, SkPath::kWinding_FillType);
}
testSimplify(path, false, out, state, pathStr);
path.setFillType(SkPath::kEvenOdd_FillType);
if (progress) {
outputProgress(state.fPathStr, pathStr, SkPath::kEvenOdd_FillType);
}
testSimplify(path, true, out, state, pathStr);
}
}
}
}
}
DEF_TEST(PathOpsSimplifyQuadsThreaded, reporter) {
int threadCount = initializeTests(reporter, "testQuads");
PathOpsThreadedTestRunner testRunner(reporter, threadCount);
int a = 0;
for (; a < 16; ++a) {
for (int b = a ; b < 16; ++b) {
for (int c = b ; c < 16; ++c) {
for (int d = c; d < 16; ++d) {
*testRunner.fRunnables.append() = SkNEW_ARGS(PathOpsThreadedRunnable,
(&testSimplifyQuadsMain, a, b, c, d, &testRunner));
}
if (!reporter->allowExtendedTest()) goto finish;
}
}
}
finish:
testRunner.render();
ShowTestArray();
}