1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCanvas.h"
#include "SkPath.h"
#include "SkShadowTessellator.h"
#include "SkShadowUtils.h"
#include "SkVertices.h"
#include "Test.h"
void tessellate_shadow(skiatest::Reporter* reporter, const SkPath& path, const SkMatrix& ctm,
bool expectSuccess) {
auto heightParams = SkPoint3::Make(0, 0, 4);
auto verts = SkShadowTessellator::MakeAmbient(path, ctm, heightParams, true);
if (expectSuccess != SkToBool(verts)) {
ERRORF(reporter, "Expected shadow tessellation to %s but it did not.",
expectSuccess ? "succeed" : "fail");
}
verts = SkShadowTessellator::MakeAmbient(path, ctm, heightParams, false);
if (expectSuccess != SkToBool(verts)) {
ERRORF(reporter, "Expected shadow tessellation to %s but it did not.",
expectSuccess ? "succeed" : "fail");
}
verts = SkShadowTessellator::MakeSpot(path, ctm, heightParams, {0, 0, 128}, 128.f, false);
if (expectSuccess != SkToBool(verts)) {
ERRORF(reporter, "Expected shadow tessellation to %s but it did not.",
expectSuccess ? "succeed" : "fail");
}
verts = SkShadowTessellator::MakeSpot(path, ctm, heightParams, {0, 0, 128}, 128.f, false);
if (expectSuccess != SkToBool(verts)) {
ERRORF(reporter, "Expected shadow tessellation to %s but it did not.",
expectSuccess ? "succeed" : "fail");
}
}
DEF_TEST(ShadowUtils, reporter) {
SkCanvas canvas(100, 100);
SkPath path;
path.cubicTo(100, 50, 20, 100, 0, 0);
tessellate_shadow(reporter, path, canvas.getTotalMatrix(), true);
// This line segment has no area and no shadow.
path.reset();
path.lineTo(10.f, 10.f);
tessellate_shadow(reporter, path, canvas.getTotalMatrix(), false);
// A series of colinear line segments
path.reset();
for (int i = 0; i < 10; ++i) {
path.lineTo((SkScalar)i, (SkScalar)i);
}
tessellate_shadow(reporter, path, canvas.getTotalMatrix(), false);
}
|
