1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkGeometry.h" 9 #include "Test.h" 10 11 static bool nearly_equal(const SkPoint& a, const SkPoint& b) { 12 return SkScalarNearlyEqual(a.fX, b.fX) && SkScalarNearlyEqual(a.fY, b.fY); 13 } 14 15 static void testChopCubic(skiatest::Reporter* reporter) { 16 /* 17 Inspired by this test, which used to assert that the tValues had dups 18 19 <path stroke="#202020" d="M0,0 C0,0 1,1 2190,5130 C2190,5070 2220,5010 2205,4980" /> 20 */ 21 const SkPoint src[] = { 22 { SkIntToScalar(2190), SkIntToScalar(5130) }, 23 { SkIntToScalar(2190), SkIntToScalar(5070) }, 24 { SkIntToScalar(2220), SkIntToScalar(5010) }, 25 { SkIntToScalar(2205), SkIntToScalar(4980) }, 26 }; 27 SkPoint dst[13]; 28 SkScalar tValues[3]; 29 // make sure we don't assert internally 30 int count = SkChopCubicAtMaxCurvature(src, dst, tValues); 31 if (false) { // avoid bit rot, suppress warning 32 REPORTER_ASSERT(reporter, count); 33 } 34 } 35 36 DEF_TEST(Geometry, reporter) { 37 SkPoint pts[3], dst[5]; 38 39 pts[0].set(0, 0); 40 pts[1].set(100, 50); 41 pts[2].set(0, 100); 42 43 int count = SkChopQuadAtMaxCurvature(pts, dst); 44 REPORTER_ASSERT(reporter, count == 1 || count == 2); 45 46 pts[0].set(0, 0); 47 pts[1].set(SkIntToScalar(3), 0); 48 pts[2].set(SkIntToScalar(3), SkIntToScalar(3)); 49 SkConvertQuadToCubic(pts, dst); 50 const SkPoint cubic[] = { 51 { 0, 0, }, 52 { SkIntToScalar(2), 0, }, 53 { SkIntToScalar(3), SkIntToScalar(1), }, 54 { SkIntToScalar(3), SkIntToScalar(3) }, 55 }; 56 for (int i = 0; i < 4; ++i) { 57 REPORTER_ASSERT(reporter, nearly_equal(cubic[i], dst[i])); 58 } 59 60 testChopCubic(reporter); 61 } 62
