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      1 /*
      2  * Copyright 2012 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 #include "CurveIntersection.h"
      8 #include "Intersection_Tests.h"
      9 #include "IntersectionUtilities.h"
     10 
     11 static void assert_that(int x, int y, const char* s) {
     12     if (x == y) {
     13         return;
     14     }
     15     SkDebugf("result=%d expected=%d %s\n", x, y, s);
     16 }
     17 
     18 static void side_test() {
     19     assert_that(side(-1), 0, "side(-1) != 0");
     20     assert_that(side(0), 1, "side(0) != 1");
     21     assert_that(side(1), 2, "side(1) != 2");
     22 }
     23 
     24 static void sideBit_test() {
     25     assert_that(sideBit(-1), 1, "sideBit(-1) != 1");
     26     assert_that(sideBit(0), 2, "sideBit(0) != 2");
     27     assert_that(sideBit(1), 4, "sideBit(1) != 4");
     28 }
     29 
     30 static void other_two_test() {
     31     for (int x = 0; x < 4; ++x) {
     32         for (int y = 0; y < 4; ++y) {
     33             if (x == y) {
     34                 continue;
     35             }
     36             int mask = other_two(x, y);
     37             int all = 1 << x;
     38             all |= 1 << y;
     39             all |= 1 << (x ^ mask);
     40             all |= 1 << (y ^ mask);
     41             if (all == 0x0F) {
     42                 continue;
     43             }
     44             SkDebugf("[%d,%d] other_two failed mask=%d [%d,%d]\n",
     45                 x, y, mask, x ^ mask, y ^ mask);
     46         }
     47     }
     48 }
     49 
     50 void Inline_Tests() {
     51     side_test();
     52     sideBit_test();
     53     other_two_test();
     54 }
     55