32546db149
git-svn-id: http://skia.googlecode.com/svn/trunk@5376 2bbb7eff-a529-9590-31e7-b0007b416f81
129 lines
4.9 KiB
C++
129 lines
4.9 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 "CurveIntersection.h"
|
|
#include "CurveUtilities.h"
|
|
#include "Intersection_Tests.h"
|
|
#include "Intersections.h"
|
|
#include "QuadraticIntersection_TestData.h"
|
|
#include "TestUtilities.h"
|
|
#include "SkTypes.h"
|
|
|
|
const int firstQuadIntersectionTest = 9;
|
|
|
|
static void standardTestCases() {
|
|
for (size_t index = firstQuadIntersectionTest; index < quadraticTests_count; ++index) {
|
|
const Quadratic& quad1 = quadraticTests[index][0];
|
|
const Quadratic& quad2 = quadraticTests[index][1];
|
|
Quadratic reduce1, reduce2;
|
|
int order1 = reduceOrder(quad1, reduce1);
|
|
int order2 = reduceOrder(quad2, reduce2);
|
|
if (order1 < 3) {
|
|
printf("[%d] quad1 order=%d\n", (int) index, order1);
|
|
}
|
|
if (order2 < 3) {
|
|
printf("[%d] quad2 order=%d\n", (int) index, order2);
|
|
}
|
|
if (order1 == 3 && order2 == 3) {
|
|
Intersections intersections;
|
|
intersect(reduce1, reduce2, intersections);
|
|
if (intersections.intersected()) {
|
|
for (int pt = 0; pt < intersections.used(); ++pt) {
|
|
double tt1 = intersections.fT[0][pt];
|
|
double tx1, ty1;
|
|
xy_at_t(quad1, tt1, tx1, ty1);
|
|
double tt2 = intersections.fT[1][pt];
|
|
double tx2, ty2;
|
|
xy_at_t(quad2, tt2, tx2, ty2);
|
|
if (!approximately_equal(tx1, tx2)) {
|
|
printf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
|
|
__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
|
|
}
|
|
if (!approximately_equal(ty1, ty2)) {
|
|
printf("%s [%d,%d] y!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
|
|
__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static const Quadratic testSet[] = {
|
|
{{8, 8}, {10, 10}, {8, -10}},
|
|
{{8, 8}, {12, 12}, {14, 4}},
|
|
{{8, 8}, {9, 9}, {10, 8}}
|
|
};
|
|
|
|
const size_t testSetCount = sizeof(testSet) / sizeof(testSet[0]);
|
|
|
|
static void oneOffTest() {
|
|
for (size_t outer = 0; outer < testSetCount - 1; ++outer) {
|
|
for (size_t inner = outer + 1; inner < testSetCount; ++inner) {
|
|
const Quadratic& quad1 = testSet[outer];
|
|
const Quadratic& quad2 = testSet[inner];
|
|
Intersections intersections;
|
|
intersect(quad1, quad2, intersections);
|
|
if (!intersections.intersected()) {
|
|
SkDebugf("%s no intersection!\n", __FUNCTION__);
|
|
}
|
|
for (int pt = 0; pt < intersections.used(); ++pt) {
|
|
double tt1 = intersections.fT[0][pt];
|
|
double tx1, ty1;
|
|
xy_at_t(quad1, tt1, tx1, ty1);
|
|
double tt2 = intersections.fT[1][pt];
|
|
double tx2, ty2;
|
|
xy_at_t(quad2, tt2, tx2, ty2);
|
|
if (!approximately_equal(tx1, tx2)) {
|
|
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
|
|
__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
|
|
SkASSERT(0);
|
|
}
|
|
if (!approximately_equal(ty1, ty2)) {
|
|
SkDebugf("%s [%d,%d] y!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
|
|
__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
|
|
SkASSERT(0);
|
|
}
|
|
SkDebugf("%s [%d][%d] t1=%1.9g (%1.9g, %1.9g) t2=%1.9g\n", __FUNCTION__,
|
|
outer, inner, tt1, tx1, tx2, tt2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static const Quadratic coincidentTestSet[] = {
|
|
{{8, 8}, {10, 10}, {8, -10}},
|
|
{{8, -10}, {10, 10}, {8, 8}},
|
|
};
|
|
|
|
const size_t coincidentTestSetCount = sizeof(coincidentTestSet) / sizeof(coincidentTestSet[0]);
|
|
|
|
static void coincidentTest() {
|
|
for (size_t testIndex = 0; testIndex < coincidentTestSetCount - 1; testIndex += 2) {
|
|
const Quadratic& quad1 = coincidentTestSet[testIndex];
|
|
const Quadratic& quad2 = coincidentTestSet[testIndex + 1];
|
|
Intersections intersections;
|
|
intersect(quad1, quad2, intersections);
|
|
SkASSERT(intersections.coincidentUsed() == 2);
|
|
for (int pt = 0; pt < intersections.coincidentUsed(); ++pt) {
|
|
double tt1 = intersections.fT[0][pt];
|
|
double tx1, ty1;
|
|
xy_at_t(quad1, tt1, tx1, ty1);
|
|
double tt2 = intersections.fT[1][pt];
|
|
double tx2, ty2;
|
|
xy_at_t(quad2, tt2, tx2, ty2);
|
|
SkDebugf("%s [%d,%d] t1=%g (%g,%g) t2=%g (%g,%g)\n",
|
|
__FUNCTION__, (int)testIndex, pt, tt1, tx1, ty1, tt2, tx2, ty2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void QuadraticIntersection_Test() {
|
|
coincidentTest();
|
|
oneOffTest();
|
|
standardTestCases();
|
|
}
|